JPH09326152A - Disk device control method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To stop a tray for placing plural disk thereon at the same stopping position by a single detection means. SOLUTION: After the position where the CD tray rotating in the FWD direction is corresponded to the selected placing part, is detected (step 148) by a sensor, the rotating speed of the CD tray is reduced (step 156), and the rotation of the CD tray is stopped (step 160) by detecting (step 158) a stop reference part (arrow A) by the sensor, and also the CD tray is stopped (step 164) after it is rotated (step 162) in the RVS direction for a specified time. Also in the case of rotating in the RVS direction, similarly the CD tray is stopped after the rotation in the RVS direction for a specified time. Consequently, the CD tray is surely stopped at the stopping position with the same amount of error, since the CD tray is stopped by taking the stop reference part as the reference after the rotating direction (RVS direction) of the CD tray is made to the same.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disc drive control method suitable for use in, for example, selecting an arbitrary disc from a plurality of compact discs for reproduction.

[0002]

2. Description of the Related Art In a disc device, for example, a plurality of compact discs (CDs) are separately placed at the same time to selectively reproduce arbitrary CDs (hereinafter referred to as "CD").
There is an "autochanger"). In this CD autochanger, a disk-shaped rotary table having a plurality of mounting portions for mounting a plurality of disks, a turntable for chucking a selected disk selected by a user, and a clamper are arranged. There is.

In the CD autochanger, in order to move the selected disk to the stop position for chucking, it is necessary to rotate and stop the rotary table until it corresponds to the selected disk stop position. Therefore, the rotary table is provided with an identification slit for identifying the mounting portion and a stop reference portion. In addition,
In the parts corresponding to these slits and the stop reference part,
A sensor for detecting the slit is arranged.

FIG. 52 is a diagram showing an example thereof. On both sides of the identification slit 400 (two slits are formed in FIG. 52), reference portions 402 and 404 having a predetermined width are provided.
Are formed in pairs. Further, a stop reference portion 406 for left stop is formed on the outside of the reference portions 402 and 404, that is, the left end (arrow L side in FIG. 52), and the right end (arrow R side in FIG. 52) for right stop. A stop reference portion 408 is formed.

Here, a stop reference portion 406 for left stop,
The reason for providing the stop reference portion 408 for right stop is as follows. Some CD autochangers allow a rotary table to be pulled out during playback of a selected disc to open a plurality of mounting portions so that the disc can be mounted. In this case, if the rotary table is pulled out while the reproduction is being performed, only one mounting portion is opened. However, this is inconvenient to use, and therefore the rotary table may be slightly rotated from the state during reproduction so that a plurality of (for example, two) mounting portions are opened. Therefore, as described above, the stop reference portion is provided with left stop and right stop.

In the CD autochanger, the sensor has an identification slit 40 between the reference portions 402 or 404.
The mounting number (disk number) is determined by detecting 0 (the number of slits). After this, the stop reference unit 406
By detecting (or 408), the rotary table was stopped at the position of arrow A or arrow B in FIG.

That is, for example, when the rotary table is rotated in the clockwise direction (direction of arrow FWD in FIG. 52) and the rotary table is stopped at the stop position indicated by arrow A in FIG. It detects and brakes to decelerate, and stops the turntable at the stop position indicated by arrow A.

On the other hand, the rotary table moves counterclockwise (arrow F
When rotating the rotary table at the stop position indicated by the arrow A, the brake is applied to reduce the speed after applying the placement number and after detecting the reference portion 402. The rotary table is stopped at the stop position indicated by arrow A.

In both cases, when the arrow A is passed, the rotary table is rotated in the opposite direction and stopped at the arrow A. Further, when the rotary table is stopped at the arrow B, the stop processing is performed in the same procedure as the arrow A described above.

[0010]

By the way, when stopping the rotary table rotating clockwise or counterclockwise, the rotation directions of the rotary table immediately before the stop are opposite to each other. If there is a crack or the like, the rotation speed or deceleration speed may change, and it may not be possible to stop at the same position, which may affect the operation after stopping.For example, the selected disk may not be chuckable (chucking failure). It was

In order to prevent the above-mentioned error with respect to the rotation direction, it is conceivable to dispose two sensors, a sensor for detecting the stop position in the clockwise direction and a sensor for detecting the stop position in the counterclockwise direction. However, the number of parts increases and it becomes expensive.

In view of the above facts, the present invention provides a method of controlling a disk device in which trays for mounting a plurality of disks are stopped at the same stop position by a single detecting means.

[0013]

According to a first aspect of the present invention, there is provided a method of controlling a disc device, wherein a disc device is selected from a plurality of discs to perform at least one of reproduction and recording. A method, comprising: a rotatable tray having a plurality of mounting portions for mounting the plurality of disks, and a stop reference portion for stopping at a stop position corresponding to each of the plurality of mounting portions. And the tray is configured to be rotatable in a clockwise direction and a counterclockwise direction, and the stop condition is the same when the tray is rotated in the clockwise direction and in the counterclockwise direction. It is characterized by

According to a second aspect of the present invention, there is provided a method of controlling a disk device, wherein a disk device is selected from a plurality of disks and at least one of reproduction and recording is performed. A rotatable tray having a plurality of mounting portions for mounting a plurality of disks and a stop reference portion for stopping at a stop position corresponding to each of the plurality of mounting portions, and the stop reference portion. Detecting means for detecting and the tray is rotating in the first direction,
The rotation of the tray is decelerated after the detection unit detects the position corresponding to the selected placement unit where the tray is selected, and the rotation of the tray is stopped by the detection unit detecting the stop reference unit. In addition, the tray is rotated in a second direction different from the first direction for a predetermined time, and then stopped.

According to a third aspect of the present invention, in the disc drive control method, when the tray is rotating in a second direction different from the first direction, the tray is selected. The rotation of the tray is decelerated after the detection means detects the position corresponding to the placing portion, and the rotation of the tray is stopped by the detection means detecting the stop reference portion and the rotation of the tray. After stopping the tray, the tray is decelerated and rotated again in the first direction, and the detection means detects the stop reference portion to stop the tray, and the tray is moved in the second direction for a predetermined time. It is characterized by stopping after rotating.

According to a fourth aspect of the present invention, in the disc drive control method, the tray is selected when the tray is rotating in a second direction different from the first direction. The rotation of the tray is stopped after the detecting means detects the position corresponding to the placing portion, and the first
The rotation of the tray for a predetermined period of time and stopping again, and further decelerating the rotation in the second direction to stop the rotation of the tray by the detection means detecting the stop reference portion,
And, after the tray is decelerated again in the first direction and the detecting means again detects the stop reference portion, the tray is stopped, and the tray is rotated in the second direction for a predetermined time. It is characterized by stopping.

Therefore, according to the disk device control method of the present invention, the trays rotating in the forward and reverse directions are set in the same rotation direction and then stopped with the stop reference portion as a reference, so that the same error amount is obtained. The tray can be reliably stopped at the stop position. In addition, similarly, since it is possible to detect the stop position of the tray with a single detecting means,
There is no need to increase the detection means.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a compact disc (hereinafter, referred to as a "compact disc") when a tray 12 as a first tray is stored.
FIG. 32 is a plan view of the disk device S showing a chucking state of a “disk”) CD, and FIG. Note that the disk CD is shown in phantom lines in FIG. 1, and the tray 12 and the CD tray 14 are shown in phantom lines in FIG. In each drawing, arrow F indicates the front side, arrow B indicates the rear side,
The arrow R indicates the right side and the arrow L indicates the left side.

In FIG. 1, the cabinet 10 has a substantially square planar shape, and a tray 12 is disposed on the upper surface of the cabinet 10 so as to be slidable in the front-rear direction (arrow F, arrow B direction). On the tray 12, a CD tray 14 as a second tray on which a plurality of (five in this example) disk CDs are placed is rotatably arranged.

For reference, the shape of the cabinet 10 to which the gears and levers described below are attached is shown in FIGS. 2 to 4. 2 is a partially cutaway front view of the cabinet 10 seen from the front side, FIG. 3 is a plan view seen from the top, and FIG. 4 is a cross-sectional view seen from the side. (Description of Configuration of Overall Drive Mechanism) As shown in FIGS. 5, 25 and 28, the cabinet 10 of the disk device S is provided with a gear train and a lever train as a drive system. The gears and levers that constitute these drive systems will be described in detail below.

As shown in FIG. 25, the motor 24 as a drive source is attached to the lower surface of the cabinet 10 so that the motor pulley 25 projects upward.

On the right side of the motor pulley 25, a pulley 26 having a small-diameter gear 26A integrally formed on its lower surface is pivotally supported by a support shaft 23B, and the rotation of the motor pulley 25 is transmitted to the pulley 26 via a belt 27. .

On the right side of the pulley 26, the small diameter gear 2 is on the upper side.
6A, a large-diameter gear 29A and a small-diameter gear 2 on the lower side.
A relay gear 29 integrally formed with 9B is pivotally supported by a support shaft 23E, and a large diameter gear 60A of an idler 60 meshes with a small diameter gear 29B of the relay gear 29. A small-diameter gear 60B is formed on the upper surface of the idler 60. The idler 60 is pivotally supported by a support shaft 28C (FIG. 6) formed on a gear lever 28 described later.

As shown in FIG. 25, below the relay gear 29, a gear lever 28 (FIG. 6) is rotatably supported by inserting a cylinder portion 28A into the same support shaft 23E as the relay gear 29. There is. The gear lever 28 has a long hole 28B formed at one end to engage with a pin 34C as a connecting portion of a cam lever 34, which will be described later, and a support shaft 28C at which the idler 60 is pivotally supported, is formed at the other end. A guide pin 28D is formed on the lower surface near the support shaft 28C and is inserted into the elongated hole 23G of the cabinet 10. Then, the ribs 23I, 23 formed on the cabinet 10
When I hits the gear lever 28, the gear lever 2
8 and the amount of rotation of the cam lever 34 are restricted.

On the front side of the gear lever 28, there is arranged a cam lever 34 which is rotatable around a support shaft 23J formed in the cabinet 10 as a support shaft. It is inserted in the long hole 28B. Further, an operator 34D protruding upward is formed at the front end of the cam lever 34 so that it can be engaged with a cam 12Z of the tray 12 described later (see FIG. 16). Although the operation will be described in detail later, the cam lever 34 engages with the cam 12Z and is engaged with the gear lever 28.
This is to prevent the tray from rotating and to open and close the tray.

The pinion 40 is integrally formed with a gear 40A at a lower portion and a pinion gear 40B at an upper portion, and is pivotally supported by a support shaft 22E of the cabinet 10. When the idler 60 is located at the right end of the long hole 23G, the small diameter gear 60
B is capable of meshing with the lower gear 40A, and the upper gear 40B always meshes with a rack 12A formed on a tray 12 described later.

In FIG. 25, when the motor 24 rotates in the clockwise direction (hereinafter, also referred to as "CW" or "FWD direction"), the rotational force is transmitted to the relay gear 29 and the idler 60 via the motor pulley 25 and the pulley 26. Then, the idler 60 rotates clockwise and tries to rotate the pinion 40 counterclockwise (hereinafter, also referred to as “CCW” or “RVS direction”). However, the gear lever 28 and the cam lever 3 are stronger than the force required for the pinion 40 to start rotating.
Since the rotating force of 4 is smaller, the pinion 40 does not rotate and remains stopped. Therefore, the lower gear 40A of the pinion 40 drives the small diameter gear 60B of the idler 60 to move the idler 60 counterclockwise, the gear lever 28 rotates counterclockwise, and the cam lever 34 rotates clockwise.

When the gear lever 28 rotates counterclockwise, the small diameter gear 60B of the idler 60 moves to the cabinet 1
The gear 22 engages with the gear 22C formed in 0 and rotates counterclockwise as it is, the gear lever 28 comes into contact with the rib 23I to stop the rotation, and the small diameter gear 60B of the idler 60 causes the cam gear 38 (FIG. 7) described later. The cam gear 38 is rotated in the counterclockwise direction by meshing with the gear 38A.

When the motor 24 rotates counterclockwise in this state, the idler 60 rotates counterclockwise to rotate the cam gear 38 clockwise, but the gear lever 28 is rotated more than the force for rotating the cam gear 38. The cam gear 38 remains stopped because the force to rotate the is smaller. Therefore, the small-diameter gear 60B of the idler 60 is driven by the gear 38A of the cam gear 38 to rotate the idler 60 clockwise, and contrary to the above, the idler 60 is positioned on the pinion 40 via the gear 22C and the gear lever 28 contacts the rib 23I. When the rotation thereof is stopped, the pinion 40 is rotated clockwise by the small diameter gear of the idler 60.

FIG. 7 is a diagram showing the structure of the cam gear 38, FIG. 7 (A) is a plan view thereof, and FIG. 7 (B) is a bottom view thereof. The cam gear 38 is formed in a disk shape, and a gear 38A is formed on the lower portion of the outer peripheral surface thereof. When the idler 60 is located at the left end, the gear 38A meshes with the small diameter gear 60B of the idler 60 to be rotatable. There is.

On the upper surface of the cam gear 38, there is a cam portion 39D along the inner circumference of the cam gear 38, and a tubular portion 38D which is the center of the cam gear 38 while slightly expanding from both ends of the cam portion 39D.
A substantially heart-shaped cam 39 composed of a cam portion 39B and a cam portion 39C formed toward the side is formed, and a pin 32B of a joint lever 32, which will be described later, engages with the cam 39 and the joint lever 32 (see FIG. 8). (See) movement is restricted.

On the lower surface of the cam gear 38, a cam 39E having a substantially elliptic arc shape from the vicinity of the cylindrical portion 38D toward the outer periphery of the cam gear 38, a cam portion 39F which draws an arc substantially concentric with the cylindrical portion 38D of the cam gear 38, and these cams. 39E, 39F
A cam 39 'made up of a cam 39G connecting the two is formed, and a pin 36B of an operation lever 36 (see FIG. 9) described later engages with this cam 39' to restrict the movement of the operation lever 36.

As shown in FIG. 25, the cam gear 38 is inserted into a support shaft 22D formed in the cabinet 10 and rotatably attached.

Next, the lever and the like controlled by the cam gear 38 will be described. As shown in FIG. 28, on the upper side of the cam gear 38, a joint lever 32 (FIG. 8) having a substantially planar shape is arranged so that one apex angle thereof faces the front side, and is arranged slidably in the front-rear direction. There is. A long hole 32A extending in the front-rear direction is formed substantially in the center of the joint lever 32, and a support shaft 22D formed in the cabinet 10, which is the central shaft of the cam gear 38, is inserted into the long hole 32A. . A pin 32B protruding downward is formed in front of the elongated hole 32A, and the pin 32B is inserted into the cam 39A of the cam gear 38.

A long hole 32C is formed in the front-rear direction from the front side of the joint lever 32.
A spindle 23D formed on the cabinet 10 is inserted into 2C. Then, the support shaft 2 is provided in the long holes 32A and 32C.
Support shafts 22D and 23D with 2D and 23D inserted
Fasten a fastening means such as a screw to the top of the
The top of 23D has a spring-like hook shape, for example, a so-called patching stop, and the like so as to prevent the joint lever 32 from sliding in the front-rear direction so as to prevent the joint lever 32 from slipping upward.

Hooks 32D and 32E are formed on both sides of the rear end of the joint lever 32, and the side surfaces of the hooks 32D and 32E are U-shaped as shown in FIG. Pins 46K of 46 (see FIG. 13) are hooked to connect them. On the front side of the hook 32D on the left side of the rear end of the joint lever 32,
An engagement surface 32F is formed so as to protrude to the left of the position where the hook 32D is formed. A protrusion is formed on the left side of the engagement surface 32F, and the protrusion can come into contact with a protrusion 100C of the lever 100 described later.

Below the cam gear 38, the operating lever 36 is provided.
(FIG. 9) is arranged, and is rotatable around a support shaft 23H formed in the cabinet 10. This spindle 2
3H is formed on the front side of the support shaft 22D of the cam gear 38.

A pin 36B protruding upward is formed at one end of the operating lever 36, and this pin 36B is connected to the cam gear 38.
Is inserted into the cam 39F of the. An engaging portion 36C is provided on the other end of the operating lever so as to project downward. The engaging portion 36C includes a shaft 36D and an overhanging portion 3 extending from the tip of the shaft 36D.
It has a T-shape consisting of 6E.

A slider load 42 (FIG. 10) is arranged below the operating lever 36. An elongated hole 42B is formed at the front right of the slider load 42, and the engaging portion 36C of the operation lever 36 is engaged with the elongated hole 42B. The long hole 42B is formed obliquely from the front left to the rear right so as to face the tangential direction of the rotation locus of the engagement portion 36C of the operation lever 36. And this long hole 42B is the shaft 36D of the engaging portion 36C.
By being pushed by, the slider load 42 slides in the front-back direction.

In this example, since the slider load 42 is slid back and forth by the rotation of the operation lever 36, it is necessary to convert a force in a lateral direction (the locus of the shaft 36D) to the front and rear direction. Although details will be described later, since the heavy pickup device 16 works to move up and down, a very large force is usually required. However, since the elongated hole of the slider load 42 on the slide side is formed so as to face the tangential direction of the shaft 36D, the slider load 42 is always pushed in the tangential direction, and when the shaft 36D rotates, it becomes long. The hole 42B is pushed out so as to slide along the rotation trajectory of the shaft 36D, so that the slider load 42 and the pickup device 16 can be slid with a small force.

A stopper 42J is attached to the slider load 42.
(See FIG. 10) is formed downward, and the stoppers 42J are elongated holes 22G and 22H formed in the cabinet.
(See FIG. 3) to regulate the slide amount of the slider load 42 in the front-rear direction.

As shown in FIG. 5, an L-shaped long hole 42A is formed along the front-rear direction on the right rear side of the slider load 42, and the attachment formed on the cabinet 10 is formed in this long hole 42A. The shaft 22J is inserted and attached so as to be slidable in the front-rear direction. The mounting shaft 22J has a long hole 42
It is inserted and attached from the L-shaped portion of A, and in the slide range of the slider load 42 after attachment, the attachment shaft 22
J and the L-shaped portion of the long hole 42A do not face each other, and act to prevent them from coming off.

On the left side of the slider load 42, there is formed a long hole 42C extending substantially in the front-rear direction. FIG.
As shown in (A), the long hole 42C includes a straight portion 42F, a straight portion 42D formed on the left rear side of the straight portion 42F, and a slant portion 42E connecting these straight portions 42F, 42D. A tapered surface 42X is formed on the right side of the tip of the. This tapered surface 42X has a long hole 42C from the right side.
It is inclined so that it becomes lower toward (Fig. 10
(C)).

As shown in FIG. 10 (B), on the right rear side of the slider load 42, a substantially U-shaped operation portion 42G (side opening is opened) whose side surface is turned upside down is provided.
Is protruding. The engaging portion 16C of the pickup device 16 (see FIG. 12) is inserted into the operation portion 42G, and the pickup device 16 is connected to the slider load 42 (see FIG. 32).

As shown in FIG. 28, the slider load 42
A stopper plate 44 is provided on the left side of the slider load 42.
It is arranged above. The stopper plate 44 has a substantially rectangular shape with a part of the right rear portion protruding, and elongated holes 44A and 44B are formed on the same line along the left-right direction. The left long hole 44A is formed in an L shape, and the key-shaped stopper 22L formed in the cabinet 10 can be inserted from this L-shaped portion. Further, the mounting shaft 22K formed in the cabinet 10 is provided in the long hole 44B.
Is inserted, and the stopper plate 44 is slidable in the left-right direction.

A pin 44C is provided on the lower right rear projection of the stopper plate 44 so as to project downward.
Is inserted into the long hole 42C of the slider load 42.

A stopper piece 44D is provided upright at the center of the front side of the stopper plate 44. The front surface of the stopper piece 44D is formed in a substantially U shape. The stopper piece 44D opposes a pin 100D of a lever 100 arranged on the tray 12 to be described later in a mode in which the tray 12 is opened during the reproduction of the disc CD and the disc CD can be exchanged (hereinafter, disc change mode). It is supposed to do.

The front surface of the stopper piece 44D is substantially U-shaped, and when the pin 100D abuts on the pin 100D.
By being received by the U-shaped portion, it is possible to prevent the contact from slipping off. In implementing the present invention, such a shape is desirable, but the shape is not necessarily limited to this, and the front surface of the stopper piece 44D may be, for example, linear.

Here, referring to FIGS. 11 and 28, the operating lever 36, the slider load 42, and the stopper plate 44.
A procedure for attaching the same to the cabinet 10 will be described.

First, the projecting portion 36E of the operating lever 36 makes the elongated hole 42B of the slider load 42 parallel to each other, and the engaging portion 36C is inserted into the elongated hole 42B to connect them. The pickup device 16 is attached to the operation unit 42G of the slider load 42.
Insert the engaging part 16C of the
Then, the cabinet 1 is inserted into the L-shaped portions of the long holes 42A of the slider load 42 so as to be inserted into the mounting shafts 22J.
The slider load 42 and the operation lever 36 are attached to 0. At this time, the slider load 42 is slid to the most retracted position.

Next, the L-shaped portion of the long hole 44A is inserted into the stopper 22L while the pin 44C of the stopper plate 44 is placed on the tapered surface 42X of the slider load 42. At this time, the stopper plate 44 is obliquely arranged so that the pin 44C is on the upper side. In this state, when the upper portion of the pin 44C of the stopper plate 44 is pushed by a hand or the like, the pin 44C is moved obliquely downward leftward according to the taper of the taper surface 42X and inserted into the long hole 42C, so that the stopper plate 44 is slid leftward. When the stopper 22L reaches the straight portion of the long hole 44A, the slide stops.

The cam gear 38 and the joint lever 3
2 is attached here, the operation lever 36 is rotated, the pin 36B is inserted into the cam 38B of the cam gear 38, the cam gear 38 is inserted into the support shaft 22D, and the hooks 32D and 32E of the joint lever 32 are attached to the plate cams. The pin 46K of 46 is hooked so that the pin 32B of the joint lever 32 is inserted into the cam 39, and the joint lever 32 is prevented from coming off as described above (state of FIG. 28).

After the mounting, the operation lever 36 moves the cam 3
In the range rotated by 8B, the angle of the overhanging portion 36E is set so that the overhanging portion 36E and the elongated hole 42B of the slider load 42 are not parallel to each other, so that these connections are not disconnected. If the pin 44C of the stopper plate 44 is inserted into the long hole 42C of the slider load 42, the stopper plate 44
Even if slides, the L-shaped part of the long hole 44A and the stopper 2
Since it does not face 2L, the stopper plate does not come off.

By doing so, it is possible to easily position each interlocking part so that the parts are held in a predetermined positional relationship with each other, and to prevent the parts from coming out of the cabinet without using screws or the like. can do.

(Description of Pickup Device 16 and Driving Mechanism Thereof) As shown in FIG. 12, the pickup device 16 includes a pickup 76, an objective lens 78, a base 70 on which a turntable 74 is arranged, and a motor 72. A cylindrical engagement portion 16C is formed on the left front side of the pickup device 16, and the operation portion 42G of the slider load 42 is inserted therein as described above, and the pickup device 1
6 and the slider load 42 are connected. Further, at the lower portion of the side surface of the pickup device 16, two pins 16A, 16A ′, 16B, which are provided on the left and right sides and project outwardly,
16B 'is formed. Further, a part of the right side surface thereof projects upward, and a pin 16D is formed at the upper end thereof so as to face outward.

Plate cams 46 (FIG. 13) are attached to the left and right inside of the cabinet 10 in which the pickup device 16 is arranged. The two plate cams 46 have a rectangular side surface, and the pin 4 is provided on the upper front side of the plate cam 46.
6K are projectingly provided so as to face each other, and the pins 46K are hooks 32D, 32 of the joint lever 32.
When E is hooked, the plate cam 46 and the joint lever 3
2 are connected.

FIG. 13 shows the structure of the right side plate cam 46, and the left side plate cam 46 has a bilaterally symmetrical shape, so that the description thereof will be omitted.

As shown in FIG. 13 (A), the plate cam 46 is formed with hooks 46L and 46M protruding toward the left side.
0 is attached to the upper and lower ends of a mounting surface 19A (see FIGS. 3 and 4) protruding in the vertical direction so as to be slidable in the front-rear direction.

On the plate cam 46, a cam 47 is formed from the front side to almost half, and a cam 47 'is formed from the half to the rear side. The cams 47, 47 'are roughly the lower part 47.
B, 47B ', and intermediate portions 47E, 47E' and upper portions 47H, 47H ', which are provided slightly above the middle in the vertical direction and have a gentle inclination, and the inclined portions 47 connecting the respective portions.
It consists of C, 47C ', 47G and 47G'. Cam 47,
47 'includes pins 16A, 16 of the pickup device 16.
A'is inserted respectively.

14A and 14B are views showing the structure of the clamper holding body 48. FIG. 14A is a right side view and FIG. 14B is a front view seen from the front side.

The clamper holder 48 is provided with a support portion 48A for supporting the clamper 50 having an annular planar shape. A magnet 50A is attached to the clamper 50, and the magnet 50A attracts the turntable 74 to sandwich (chuck) the disc CD between the clamper 50 and the turntable 74.

On the right rear side of the clamper holder 48, a connecting portion 4 is provided.
8B extends downward, and this connecting portion 48
A long hole 48C is formed on the front side of the side surface of B along the vertical direction. The pin 16D (shown by an imaginary line in FIG. 14) of the pickup device 16 is inserted into the elongated hole 48C, and the pickup device 16 is connected to the clamper holder 48.

A guide rod 48D is provided on the connecting portion 48B so as to project upward, and is inserted into a guide groove 20M formed in the clamper holding portion 20 (see FIG. 2) of the cabinet 10.

Four support pieces 48E are formed at the front and rear of the side surface of the clamper holding body 48 so that two support pieces 48E are formed on the left and right sides in total. Pins 48 are respectively provided on the support pieces 48E.
F and 48G are respectively projected outward,
The pins 48F and 48G engage with rails 20A and 20B formed on the clamper holding portion 20 of the cabinet 10, respectively, and the clamper holding body 48 is supported and guided along the guides and the rails to move.

As shown in FIG. 4, the rail 20A is composed of a lower inclined portion 201A inclined downward from the horizontal portion of the front end, a horizontal portion 202A, and an upper inclined portion 203A inclined upward, and the rail 20B is gradually lowered downward. It is inclined. Due to the inclination of the rails 20A and 20B, the clamper holder 48 is provided.
The vertical movement of the pins 48F and 48G is restricted.

FIG. 15 is a partial sectional view of the clamper holding portion 20 of the cabinet 10 taken along the line XX 'in FIG. As shown in the figure, a mold spring 48H is integrally formed on the clamper holder 48, and an engagement surface 20F that engages with the mold spring 48H is formed on the clamper holder 20.

Further, the engaging surface 20F is provided with a hook portion 20G having a substantially V shape corresponding to the tip shape of the mold spring 48H on the rear side thereof, and a square locking hole 20H is formed on the front side thereof. .

The mold spring 48H has a sloped surface 2 between the locking hole 20H formed in the engaging surface 20F and the hook portion 20G.
It moves through 0K and the horizontal portion 20J. The mold spring 48H is engaged with the hook portion 20G when the pickup device 16 is in the reproducing state, and is engaged with the locking hole 20H when the pickup device 16 is in the stopped state.

Pickup device 16 and clamper holder 4
8 is connected by a pin 16D and a long hole 48C and moves integrally. As described above, the clamper holder 48 is attached to the clamper holder 20 formed integrally with the cabinet 10. Therefore, if some external force such as shock or vibration is applied to the cabinet 10, this force is transmitted to the pickup device 16 via the clamper holding body 48, which may cause skipping during reproduction.
However, by providing the mold spring 48H, the external force can be absorbed by the elasticity of the mold spring 48H, so that such a problem can be avoided.

Further, in the disk device as in the present example, it is considered that the reproduction state and the stop state are retained for a long time as it is, and the intermediate state is only during the transition period between these states. is there. Therefore, when in the regenerating state, the tip of the mold spring 48H is attached to the hook portion 20G,
When in the stopped state, the mold spring 48H is deformed by engaging with the locking holes 20H respectively, and the deformation is small when passing through the intermediate sloped surface 20K and the horizontal portion 20J. As the engagement surface 2
It forms 0F.

The mold spring 48H is greatly deformed only when the hook portion 20G, the horizontal portion 20J, the inclined surface 20K and the locking hole 20H are switched. In this way, since the molded spring 48H is not loaded for a long time, it is possible to prevent the spring from becoming settled due to a large deformation for a long time and thus failing to perform its function, and at the time of reproduction or stop. In this state, the clamper holder 48 can be positioned at a predetermined position.

Further, as shown in FIG. 32, in the reproducing position where the pickup device 16 is located on the upper side, the reproduction switch 154 is brought into contact with the pickup device 16.
A and the down switch 154B are arranged on a circuit board (not shown). Such a switch may also serve as one switch.

(Description of Tray 12, CD Tray 14, and Drive Mechanism) As shown in FIG. 37, the tray 12 is a rail 21 formed on both left and right sides of the cabinet 10.
The trays 12A and 21B (see FIG. 3) are slidable in the front-rear direction, and stoppers 21C and 21D projecting from the front ends of the rails 21A and 21B prevent the tray 12 from sliding out of the cabinet 10. Is regulated.

As shown in FIG. 16, the tray 12 has a CD
A substantially annular concave mounting surface 12B on which the tray 14 (see FIG. 17) is mounted is formed, and a motor 82 for rotating the CD tray 14 is provided on the left rear side of the mounting surface 12B.
Is arranged.

The motor 82 is connected to a pulley 84 and a worm 88 via a belt 86 as shown in FIG. The worm 88 is a small diameter gear 90A of the pinion 90.
And the driving force of the motor 82 is transmitted to the pinion 90. The pinion 90 has a large diameter gear 90B integrally formed on the upper surface of a small diameter gear 90A.
OB meshes with the small diameter gear 92A of the relay gear 92. A large-diameter gear 92B is integrally formed on the lower surface of the small-diameter gear 92A in the relay gear 92. The large-diameter gear 92B meshes with the drive gear 94 and the drive gear 94
Always meshes with a gear 14A of the CD tray 14 described later. By rotating the motor 82 in this manner, the tray 14 is driven in the forward and reverse directions.

On the lower surface of the tray 12, a rack 12A is formed on the lower right side in the front-rear direction. The rack 12A meshes with the pinion 40 and the pinion 40 is driven to move the tray 12 in the front-rear direction. Move to.

On the lower surface of the tray 12, a rack 12A is provided.
A cam portion 12Z is formed substantially in parallel with the cam portion 12Z.
The operator 34D of the cam lever 34 described above can be engaged with Z.

The cam portion 12Z has a straight portion 12W along the front-rear direction and a relief portion 1 continuous to the straight portion 12W on the front side thereof.
2Y is formed. As will be described in detail in the description of the operation, when the tray 12 is in the closed state, the operating element 34D of the cam lever 34 is set to be located in the escape portion 12Y. At this time, the cam lever 34 can freely rotate, and the straight line When the pin 34D is located on the portion 12W, the cam lever 34 is prevented from rotating in the counterclockwise rotated position.

Ejecting portions 12C are formed on the left and right sides of the front surface of the placing portion 12B of the tray 12, respectively. The tray 12 and the disc CD are easy to take out the disc CD when the tray 12 is open (the state shown in FIG. 37). The space between the fingers is designed to be inserted.

A support shaft 96 is provided on the tray 12 at the center of its mounting surface 12B. A support shaft 98 is provided on the rear side of the support shaft 96 and near the drive gear 94,
A lever 1 for positioning the CD tray 14 on the support shaft 98.
00 is rotatably supported.

An arc-shaped elongated hole 12D is formed on the rear side of the support shaft 98 of the tray 12. A notch 12C is formed on the right side of the support shaft 96 of the tray 12.

A concentric recess is formed around the support shaft 98 of the tray 12, and in this recess 120 in the present embodiment.
Supporting portions 12F are provided at three places with an angle of ° between them.

The lever 100 attached to the support shaft 98 is substantially L-shaped in a plane, and the cylindrical portion 100A formed on the lever 100 is inserted into the support shaft 98 so as to be rotatable about the support shaft 98. Has been done. A pin 100B is projectingly provided on the right upper surface of the lever 100.
The lever 100 is rotated when B comes into contact with an engaging portion 14C of the CD tray 14 described later.

A projection 100C is provided at one end of the lever 100 so as to project downward, and the projection 100C is inserted into the notch 12C of the tray 12.

A pin 100D is provided at the other end of the lever 100 so as to project downward, and the pin 100D is inserted into the elongated hole 12D of the tray 12.

A hook portion 100E is formed on the left side of the cylindrical portion 100A of the lever 100, and one end of a spring 102 is hooked on the hook portion 100E, and the other end of the spring 102 is a long hole 12D of the tray 12. The lever 100 is always urged clockwise by being hooked by the hooking portion 12E formed on the left side.

A protrusion 12M for pressing the open switch 152A to turn it on when the tray 12 is open is formed downward (FIG. 3).
2). The open switch 152A is arranged on a circuit board (not shown) or the like and is located below the switch arrangement portion 23C shown in FIG. This switch arrangement portion 23C has a structure shown in FIG.
As shown in FIG. 2, a support shaft of the seesaw piece 30 is placed, and the seesaw piece 30 is vertically rotatable (clockwise and counterclockwise as viewed in FIG. 32) about the spindle. The seesaw piece 30 includes a projecting portion 30A that is projected on the cabinet 10 at one end, and an operation portion 30B that abuts against the open switch 152A and presses the open switch 152A at the other end. The seesaw piece 30 receives a force in a counterclockwise rotating direction due to its own weight, and the operating portion 30B is always in contact with the open switch 152A to hold the rotational position. However, since the seesaw piece 30 is extremely lightweight, in this state, the open switch 152A does not have a force enough to be turned on, and the open switch is kept off.

A substrate (not shown) is arranged on the rear side of the tray 12, and a close switch 152B is arranged there.
The close switch 152B projects rearward, and is pressed by the cabinet 10 to be turned on when the tray 12 is in the closed state. When the tray 12 is brought to the open position as shown in FIG. 36, the protrusion 12M formed on the lower surface of the tray 12 presses the protrusion 30A of the seesaw piece 30. Then, the seesaw piece 30 rotates counterclockwise about the support shaft, and the operation portion 30B
Pushes the open switch 152A to turn it on. When the tray 12 moves to a position other than the open position and the protrusion 12M separates from the protrusion 30A, the open switch 152A pushes back the operation portion 30B, and the seesaw piece 30 rotates clockwise, so that the open switch 152 is released.
A turns off.

Then, when the tray 12 reaches the closed position as shown in FIG. 32, the close switch 152B is pressed by the cabinet 10 to be turned on, and the closed state of the tray 12 is detected. Such a switch may be arranged at any position where the tray 12 is brought into contact with the tray 12 in the open state or the closed state, and is also used as one switch which is turned on or off in the open state and the closed state. Is also good.

Next, the CD tray 14 will be described. As shown in FIGS. 17 and 18, the CD tray 14 has a substantially disc shape, and a cylindrical portion 14D is formed at the center thereof, and the cylindrical portion 14D is inserted into the spindle 96 (see FIG. 16) of the tray 12. It is made rotatable.

On the upper surface of the CD tray 14, five disk mounting portions 114 for mounting the disk CD are recessed at equal intervals in this embodiment. These disk mounting portions 114
Is a mounting surface 114A on which a 12 cm disk CD is mounted with the same center, and a mounting surface 11 on which an 8 cm disk CD formed deeper than the mounting surface 114A is mounted.
4B is integrally recessed.

On the respective mounting surfaces 114A and 114B, wall portions 114C and 11 against which the side surface of the disc CD abuts.
4D is formed continuously and integrally on the mounting surface. The wall portions 114C and 114D have an arc shape, and the adjacent wall portions 114C and 114 are provided at the arc tip located on the inner peripheral side.
The wall portions 114C and 114D of D are formed continuously.

A mounting number indicating the disk number is attached to each of these mounting portions 114.

In the following, the mounting portion 114 (mounting number 1 in FIG. 17) located at a position facing the pickup device 16 will be described as an example.

As shown in FIG. 17, the disk mounting portion 114 with the mounting number 1 is inclined downward from the rear side to the front side, and further inclined from the left side to the right side in the downward slope, which will be described later. The stopper 116 is formed obliquely with respect to the horizontal so that the position where the stopper 116 is formed is the deepest. In addition, the through hole 14 of the CD tray 14 is provided in the disc mounting portion 114 so that the pickup 76 can reproduce it.
A notch 114E is formed at a position facing C.

Further, as shown in FIG. 20, the wall portion 114D
A stopper 116 having a substantially triangular shape is provided at the inner end of the stopper so as to protrude toward the inner peripheral side. The tip of the stopper 116 and the mounting surface 11
The distance from 4A is slightly wider than the thickness of the disc CD. When the disc CD is placed on the placing surface 114, the disc CD slides down along the tapered surface formed on the upper portion of the stopper 116 and is placed on the placing surface 114A, and the disc CD is placed under its own weight. The disk CD is interposed between the stopper 116 and the mounting surface 114A because it slides along the slanted portion of 114A and contacts the wall 114D. At this time, even if the disc CD vibrates in the up-down direction (direction of arrow UD), the disc CD contacts the stopper 116, so that the disc CD does not easily come off from the mounting surface 114A, and the disc CD is stable. Is retained.

In the present embodiment, such measures are taken in consideration of the small contact area between the mounting surface 114 and the disk CD as described above, but the contact area is increased or the mounting area is increased. If the inclination of the mounting surface 114 is increased, the stopper 116 may be omitted. Further, such a stopper may be provided on the mounting surface 114B.

When the disc CD is placed on the disc placing portion 114, the disc CD is placed on the disc placing portion 1
14 is installed so as to be inclined, and the wall portions 114C and 114 are mounted.
An oblique upper portion (rear side) where D is not formed holds the disc CD in a floating state where it is not grounded anywhere.

If the disc CD is held obliquely in this way, there is a risk that the floating portion may fall under the tray 12 from the notch 114E when the floating portion is shaken by an external force such as vibration. The CD is larger than the notch 114E, and since the stopper 116 is provided, such a possibility does not occur. However, the size is small, 8 cm
In the case of the disc CD, there is a possibility that it will fall into the notch 114E.

Therefore, the mounting surface 114B is the mounting surface 114A.
The angle of inclination with respect to the horizontal is larger and deeper than. By increasing the inclination angle of the mounting surface 114B in this way, the disk CD is borne by its own weight by the wall portion
Since the gravity acting in the 4D direction becomes large and becomes stable in the mounted state, such a situation can be prevented.

Here, the difference in the inclination angle of the mounting surface 114B as compared with the mounting surface 114A is that when the disk CD of 8 cm is mounted on the mounting surface 114B as shown in FIG. Highest height H2 of disc CD
However, since the height is set so as not to be higher than the highest height H1 of the 12 cm disc CD when it is placed, the difference in the inclination angle does not increase the thickness of the entire apparatus.

Since the mounting surface 114A is configured to be inclined, when the discs CD are mounted on the mounting face 114A, the adjacent discs CD appear to overlap each other in a plan view. Are placed with a gap (see FIG. 21).

As shown in FIG. 17, an elongated through hole 14C is formed on the outer peripheral side of the mounting surface 114B at a portion corresponding to the sensor 104 described later. When the CD tray 14 rotates and the through hole 14C crosses over the sensor 104 (FIG. 19), whether the disc CD is mounted on the mounting surface 114 depends on whether the sensor 104 has reflected light. To be judged.

As shown in FIG. 18, a contact portion 14B is formed on the back surface of the CD tray 14 so as to project linearly concentrically with the cylindrical portion 14D. As shown in FIG. The contact portion 14B contacts the support portion 12F of the tray 12 and the CD
The tray 14 is rotated on the tray 12. Since the contact portion 14B is brought into line contact with the support portion 12F to reduce the contact area in this manner, friction during rotation of the CD tray 14 can be reduced, and the CD tray 14 rotates smoothly. .

That is, according to this embodiment, the supporting portion 12F is
Since the contact portions are formed at three positions at an angular interval of 120 °, the contact portion 1
4B surely comes into sliding contact with the support portion 12F, and C in a stable state.
The D tray 14 can be supported.

Further, according to this embodiment, the supporting portion 12F is used.
Since the abutting portion 14B slides due to line contact with C,
The frictional force during rotation of the D tray 14 can be reduced, the CD tray 14 can rotate smoothly, and the driving force during rotation can be reduced.

Further, according to the present embodiment, the CD tray 14 is supported or rotated via the contact portion 14B and the substantially ring-shaped support portion 12F which is in sliding contact with the contact portion 14B, so that the disc device S is rotated. The thickness of the CD tray 14 can be reduced, and the CD tray 14 can be supported in a stable state without imposing a heavy load on the height determining portion of the CD tray 14.

That is, according to this embodiment, the CD tray 1
Since the 4 and the support shaft 96 are not integrally rotated, a strong coupling force is not required, and the size of the CD tray 14 and the number of disks to be mounted can be easily changed as necessary. .

As shown in FIG. 18, around the cylindrical portion 14D on the back surface of the CD tray 14, an engaging portion 14C as a cam having a substantially star-shaped tip with an arc shape is formed.
This engaging portion 14C is the pin 1 of the lever 100 shown in FIG.
Engage with 00B.

The engaging portion 14C is formed with a bulging portion 14F and a recess 14G which is recessed in a V shape from the bulging portion 14F. Five recesses 14G are formed in total (the number corresponding to the disk mounting portion 114). This recess 14G is provided on the pin 1 of the lever 100 as described later.
By engaging with 00B, the rotation of the CD tray 14 is positioned and the tray 12 is prevented from being pressed by the hand or the like to be closed in the disc change mode.

If the cylindrical portion 14D and the engaging portion 14C are provided on the inner peripheral side, the shrinkage and the variation during molding are small, so that C
It is more preferable that the D tray 14 is formed on the inner peripheral side as in the present embodiment because the D tray 14 is less likely to rotate unevenly and the CD tray 14 can be positioned reliably. It may be formed near the outer periphery. Further, depending on the position where the engaging portion 14C is formed, the position where the lever 100 is arranged, such as the front side, the right side, and the vicinity of the outer periphery of the cylindrical portion 14D, is appropriately changed.

As shown in FIG. 21, the CD tray 14 has a side wall 120 (1
20A to 120E) are formed downward. As shown in the drawing, slits 121 to 125 are formed on the side walls 120A to 120E. The number of the slits 121 to 125 is equal to that of the sensor 110 (FIG. 16).
Counted by. In the present embodiment, the number of these slits 121 to 125 corresponds to the mounting number attached to the disk mounting portion 114. When the mounting number is "1", the number of slits is "6" and the mounting number is "2". The number of slits is "2" to "5" for "5".

Based on FIGS. 21 and 22, the slit 121
Each of the configurations 125 to 125 will be described. Note that FIG.
21C to 21G are views of the slits 121 to 125 viewed from the inside of the CD tray 14, and FIGS. 21A and 21B are views of the CD tray 14 viewed from the side. is there. 22 shows the output waveform of the sensor 110. The signal from the sensor 110 is “H” at the “L” wall portion at the slit portion.

The circumferential length L10 of the side walls 120A to 120E in which the slits 121 to 125 are formed and the lengths L12 and L14 of the reference portions formed at both ends of the side walls 120A to 120E are the same. Is set to. The above-mentioned slits 121 to 125 are “6” and “2” to the middle portions of the side walls 120A to 120E of the length L16.
"5" are formed.

At the time of forward rotation of the motor 82 for rotating the CD tray 14, the CD tray 14 is rotated in the clockwise direction (direction of arrow P in FIG. 21). When the distance between the first slits is L22 and the distance between the other slits is L20 in this rotation direction, L20 is a constant distance among all the slits 121 to 125.
And L22 of the slits 122 to 125 is 2 of L20.
Has been doubled.

The distance L18 between the side walls 120A to 120E is set to be three times or more the length L12 (L14).

Both side surfaces (arrows A and B) of the slits 120A to 120E are at positions where the rotation of the CD tray 14 is stopped. When the sensor 110 is at the position of arrow A, the tray 12 is in the closed state, and at the position of arrow B. When it is in, it is open.

The sensor 110 has a light emitting element 111 and a light receiving element 112, the light emitting element 111 faces the light receiving element 112, and the side wall 120 is arranged so as to cross between these sensors 110 when the CD tray 14 rotates. (See FIG. 23C).

A method of counting the number of slits to determine the rotational position of the CD tray 14 and positioning the CD tray 14 will be described later in detail.

As shown in FIG. 1, when the tray 12 is closed, the CD tray 14 has the disc loading portion 11
Any one of 4 is on the front side, and the pickup device 1
6 and one of the mounting surfaces 114 are rotated substantially parallel to each other (see FIG. 28).

At this time, the pin 100B is inserted into the recess 14G.
Is positioned, and the lever 100 is rotated clockwise as shown by the solid line in FIG. 28, so that the lever 100 is in an optimal position for chucking (loading).

Further, when the tray 12 is opened, as shown in FIG.
One is on the front side, and the take-out portion and the notch 114E face each other so that the disc CD can be easily taken out and inserted.

At this time, the pin 100B is attached to the inflating portion 14
Positioned at F, the lever 100 is rotated counterclockwise (FIGS. 30 and 31).

As shown in FIG. 29, when the tray 12 is in the closed mode and the reproduction mode when the tray 12 is in the closed state, the pin 100B is positioned in the recess 14G in this way, so that the CD tray 14 is set to a predetermined position for some reason. Lever 100, even if it hasn't fully rotated into position
Is rotated clockwise by the urging force of the spring 102 (see FIG. 16), and the pin 100B tries to engage along the tapered surface toward the V-shaped recess 14G. It can be rotated to an accurate position and mischucking of the disc CD can be prevented.

When the CD tray 14 is rotated to replace the selected disc CD, etc., the CD
As the tray 14 rotates, the engaging portion 14C formed on the tray 14 also rotates, so that the pin 100B is moved from the recessed portion 14G along the bulging portion 14F and resists the urging force of the spring 102. Rotate counterclockwise. Then, from the bulging portion 14F to the concave portion 14
CD tray 1 while rotating lever 100 along G
4 is rotated to select the disc tray 114 of the selection tray CD.
By engaging the pin 100B with the recess 14G formed at a position corresponding to, the positioning is accurately performed at a predetermined position.

Next, the sensor 104 will be described with reference to FIG. The sensor 104 has a light emitting element 104A, a light receiving element 104B, and a holder 104C that holds these elements at a predetermined angle. The angle between the light emitting element 104A and the light receiving element 104B is the same as that of the light emitting element 1
The light emitted from 04A is the disc mounting surface 1 of the CD tray 14.
It is set so that it is reflected by the disk CD mounted on the disk 14 and the reflected light is supplied to the light receiving element 104B. In the figure, the 12 cm disc CD is a solid line, 8c
The m disc CD is shown in phantom.

The light emitting element 104A and the light receiving element 104B are inserted into the holder 104C so that their angles are held by the inner wall of the holder 104C.

As shown in FIG. 19, hooks 104D are integrally formed at both lower ends of the holder 104C. By inserting these hooks 104D into locking holes 106A formed in the printed circuit board 106, the light emitting element 104A and The holder 104C in which the light receiving element 104B is installed is locked.

That is, according to this embodiment, the hook 104
By locking D in the locking hole 106A, the holder 104
Since C is attached to the printed circuit board 106, the sensor 1
Installation of 04 becomes easy. Further, according to the present embodiment, the holder 104C includes the light emitting element 104A and the light receiving element 10.
Since 4B and 4B are separately attached, the light emitting element 104A or the light receiving element 104B can be easily replaced separately when compared with the conventional case where the light emitting element 104A or the light receiving element 104B must be replaced at the same time. The cost will be reduced.

If the hook 104D is simply inserted into the locking hole 106D, the locked state may be weak. But,
According to the present embodiment, the holder 104C is provided with the rib 104E and the rib 104E is pressed against the rear surface of the mounting surface 12B of the tray 12, so that the holder 104C can be reliably prevented from falling off.

That is, in order to reinforce the lock by the hook 104D, the hook 104D is provided with a rib 104E, and the rib 104E is pressed against the mounting surface 12B of the tray 12 to prevent the holder 104C from falling off.

The sensor 104 has a disk CD of 12 cm.
In case of 8 cm or 8 cm, the focus is set to be between the mounting surface 114A for 12 cm and the mounting surface 114B for 8 cm so that the presence or absence of the disc CD can be detected.

The sensor 1 is set at the position of the disc CD arranged on either the mounting surface 114A or 114B.
You may make it focus 04. With this configuration, the amount of light (voltage level) received by the light receiving element 104B
It is possible to determine whether the disc CD mounted on the disc mounting portion 114 is 12 cm or 8 cm depending on the difference between the above.

(Description of Method of Detecting Rotational Position of CD Tray 14 by Sensor 110) Here, the time intervals and the like adopted below are examples of the present embodiment, and are appropriately changed and used. However, this example does not limit these times.

The CD tray 14 is rotated to bring it to FIG.
Moving from the position A to the position A of the slit shown in (A) means that the tray 12 is in the closed position, the CD tray 14 shown in FIG. 17 is rotated in the CW direction, and the disc mounting portion selected for reproduction is selected. This refers to a process (motor stop process 1) of moving 114 to a position facing the pickup device 16. Moving from the B position to the A position is performed by the tray 12
From the position of the CD tray 14 at the time of opening (Fig. 37),
A process (motor stop process 2) of closing the tray 12 and rotating the CD tray 14 in the CW direction to move the selected disk placement portion 114 to a position (FIG. 1) facing the pickup device 16, and CD in each case
The process (motor stop process 5, motor stop process 6) of rotating the tray 14 in the CCW direction and arranging it at a predetermined position is indicated.

It is also possible to rotate the CD tray 14 to move it from the slit B position to the B position.
Is in the open position, the CD tray 14 is rotated in the CW direction, and the desired disk mounting portion 114 is positioned on the front surface side of the tray 12 to be the optimum position (FIG. 37) for loading and unloading the disk CD. (Motor stop processing 3). Moving from the A position to the B position means that the position of the CD tray 14 when the tray 12 is closed (FIG. 1) is changed to
The process of opening the tray 12 and rotating the CD tray 14 in the CW direction to position the desired disc mounting portion 114 on the front side of the tray 12 (FIG. 37) (motor stop process 4), and in each case Then, CC the CD tray 14
The process (motor stop process 7, motor stop process 8) of rotating in the W direction and arranging at a predetermined position is indicated.

50 and 51, the slit spacing (L20, L22) or the sidewall spacing (L12, L22,
Timing chart when counting the length of L14)
It is. The light receiving element 1 of the sensor 110 shown in FIG.
12 forms a pulse having the side wall 120, that is, the slits 121 to 125 or the width of the side wall (L12, L14), and this pulse is input to the microcomputer 140. The timing chart of FIG. 50 is for FWD rotation, and the timing chart of FIG. 51 is for RVS rotation. 50 or 51.
Are referred to in the description of the flowcharts of FIGS. 38 to 49 below.

(Motor Stop Processing 1) The motor stop processing 1 will be described with reference to the flowcharts of FIGS. 38 and 39. In step 100, the disk number N selected by the user (one of "1" to "5") is the microcomputer 1
40 and the microcomputer 140 is controlled based on this input as follows.

In step 102 for 100 ms,
After the stop state (standby state), the motor 82 is rotated in the FWD direction in step 104, and the step 1
At 06, the value of the variable A is set to "0". The initial setting is
It always starts from step 102.

At step 108, it is judged whether or not "L" → "H" of the sensor 110 is detected, and if affirmative, the variable A is set (stored) as y (the length ms of "L").
I do. Step 108 is continued until the signal detected by the sensor 110 changes from "L" to "H".

Then, in step 112, the variable A
Is greater than or equal to 300 ms, and if step 112 is negative, the process returns to step 106. If step 112 is affirmative, the first "L" in step 114 →
Whether or not "H" is detected is determined, and if step 114 is affirmative, preparation is made to detect the disk number. That is,
When step 114 is affirmative, the count value I for counting the disk number is set to "0" in step 116. The process of step 114 is continued until the signal becomes "H".

Further, in step 118, variables A, B, C
Are set to “0” respectively, and in step 120, “H” →
It is determined whether or not "L" is detected. Step 120
Continues until the signal goes low. Step 12
If 0 is affirmative, at step 122, "1" is added to the count value I, and the variable B is set to x (the length m of "H" is m).
s).

Thereafter, in step 126, "L"
→ It is judged whether "H" is detected or not, and it is continued until the signal becomes "H". When step 126 is affirmative, the variable A is set to y in step 128, and step 1
At 30 it is judged whether or not the variable A is equal to or larger than the variable 2B (twice as large as B) (as shown in FIG. 22E, is "L" twice as long as the detected "H" is detected? Determine whether or not). When step 130 is negative, it is determined in step 132 whether the count value I is 5 or more (“H” → “L” is 5 or more times).

When step 132 is negative, step 1
In step 34, it is judged whether or not “H” → “L” of the sensor 110 is detected. If step 134 is affirmative, step 13
In step 6, "1" is added to the count value I and the variable C is set to x (the length ms of "H"). In addition, step 1
34 continues until the signal goes high.

Subsequently, in step 140, the variable C is the variable 1
/ 3B (1/3 times B) or more (FIG. 50)
As shown in D, it is determined whether or not "H" having a length ⅓ times the length of previously detected "H" has been detected).

The processing of step 140 is performed by the user pressing the CD tray 14 with his / her hand or the like.
When the rotation of No. 4 is stopped, the length L22 (Fig. 23C-
(See G) from the “H” → “L” portion (the portion indicated by arrow C in FIG. 50) in the slit corresponding to the count value I
This is to prevent counting. That is, FIG.
This is because if counting from the portion indicated by the arrow C of 0, the portion that should not be counted is counted, and the disc number is erroneous.

Therefore, if step 140 is positive,
The process returns to step 106 to prepare for detecting the disk number. When step 140 is negative, the variable B is changed to the variable C in step 142 (that is, x of the variable B is changed to x of the variable C).
, And the variable A is set to “0” in step 144. After the process of step 144, the process returns to step 126 and the subsequent processes are performed, and this process is repeated until the disc number is determined.

If step 130 or step 132 is affirmative (when the CD tray 14 has rotated to the position for determining the disc number), it is judged at step 146 whether the count value I is the same as the disc number N or not. If step 146 is negative (if the disc number is not N), the process returns to step 106 and this process is repeated until the count value I reaches the number corresponding to the disc number N.

If step 146 is positive (in this case,
As shown in FIG. 50D, the count value I is reset to "0". (The disk number N is stored in the microcomputer 140), "L" in step 148 →
It is determined whether "H" is detected, and step 148 is continued until the signal becomes "H". When step 148 is affirmative, the motor 82 is stopped for 6 ms in step 150, and the motor 82 is stopped for 10 msR in step 152.
Rotate in VS direction. Then, in step 154, the motor 82 is stopped for 6 ms, and in step 156, the motor 82 is decelerated in the FWD direction.

Further, in step 158, "H" → "L"
Is detected, and step 158 is continued until the signal becomes "L". If step 158 is positive, the motor 82 is stopped for 6 ms in step 160, and the motor 82 is stopped for 10 ms RVS in step 162.
After being rotated in the direction, the motor 82 is stopped in step 164.

(Motor Stop Processing 2) The motor stop processing 2 will be described with reference to the flowchart of FIG. In step 170, the disk number N is input to the microcomputer 140, and based on this input, the microcomputer 140 operates as follows.
Is controlled.

At step 172, the motor 82 is stopped for 100 ms, and at step 174, the motor 82 is moved to FW.
Rotate in the D direction. In step 176, it is judged whether or not "H" → "L" of the sensor 110 is detected, and step 176 is continued until the signal becomes "L". When step 176 is affirmative, the process from step 116 of the flowchart (motor stop process 1) of FIG. 38 is continued.

(Motor Stop Processing 3) The motor stop processing 3 will be described with reference to the flowcharts of FIGS. 41 and 42. In step 100, the disk number N is input to the microcomputer 140, and the microcomputer 140 is controlled as follows based on this input.

In step 182 for 100 ms,
After stopping, the motor 82 is turned on in step 184.
While rotating in the WD direction, the count value I is set to "0" in step 186. In step 188,
It is judged whether "H" → "L" is detected, and step 1
20 is continued until the signal becomes "L".

If step 188 is positive, the variables A, B and C are set to "0" in step 190, respectively.
In step 192, it is determined whether "H" → "L" is detected. Step 192 continues until the signal goes low. If step 192 is positive, step 19
In step 4, "1" is added to the count value I, and in step 196, the variable B is set to x (the length ms of "H").

Then, in step 198, "L"
→ It is judged whether or not "H" is detected, and step 198 is continued until the signal becomes "H". When step 200 is affirmative, the variable A is set to y in step 202, and it is determined in step 202 whether the variable A is 300 ms or more.

If step 202 is affirmative, the process returns to step 186 to recount the count value I, and step 202
Is negative, the variable A is changed to the variable 2B in step 204.
It is determined whether or not (twice as long as B) or more (whether or not "L" having a length twice as long as the detected length of "H" has been detected). If step 204 is negative, step 20
At 6, it is determined whether the count value I is 5 or more (“H” → “L” is 5 or more times).

If step 206 is negative, step 2
At 08, it is judged whether "H" → "L" of the sensor 110 is detected, and step 208 is continued until the signal becomes "H". When step 208 is affirmative, "1" is added to the count value I and the variable C is set to x (the length ms of "H") in step 210.

Subsequently, in step 214, the variable C is the variable 1
/ 3B (1/3 times B) or more (whether or not "H" of 1/3 times the length of the previously detected "H" is detected is determined) .

When step 214 is affirmative, it is judged in step 216 whether "H" → "L" is detected, and step 216 is continued until the signal becomes "L". If step 216 is positive, step 2
At 18, the variable A is set to "0" and "L" →
It is determined whether or not "H" is detected. Step 220 is continued until the signal becomes "H", and when it becomes "H" in step 220, the variable A is changed to y (the length m of "L" is m).
s).

At step 224, the variable A is set to 300.
It is determined whether or not ms or more, and if negative, step 21
Return to 6. If step 224 is affirmative, the process returns to step 186 to count the count value I again.

If step 214 is negative, the variable B is set to the variable C in step 226 (that is, x of the variable B is set to the numerical value of x of the variable C), and step 228 is executed.
The variable A is set to "0". After the process of step 228, the process returns to step 198 and the subsequent processes are performed, and this process is repeated until the disc number is determined.

When the step 204 or 206 is affirmative (when the CD tray 14 has rotated to the position for determining the disc number), it is judged in step 230 whether the count value I becomes the same as the disc number N, Step two
When 30 is negative (when the disc number is not N), the process returns to step 216, and this process is repeated until the count value I reaches the number corresponding to the disc number N.

When step 230 is affirmative (when the count value I corresponds to the disk number N), step 2
At 32, it is determined whether "L" → "H" is detected, and step 232 is continued until the signal becomes "H". If step 232 is positive, variables A and B are set to "0" in step 234.

Then, in step 236, "H"
→ It is determined whether or not "L" is detected, and step 236 is continued until the signal becomes "L". When step 236 is affirmative, the variable B is set to x in step 238, and the variable A is set to y in step 240.

In step 242, the variable A is the variable 4
It is determined whether or not it is B (4 times as large as B) or more (that is, it is determined whether or not "H" having a length four times as long as the length of "L" being detected is detected). When step 242 is negative, the process returns to step 240 and the process of step 242 is continued while changing the value of y of the variable A. Step 242
Is positive, the motor 82 rotating in the FWD direction is decelerated in step 244.

Further, in step 246, "L"
→ It is judged whether or not "H" is detected, and step 246 is continued until the signal becomes "H". If step 246 is positive, the motor 82 is stopped for 6 ms in step 248, and the motor 82 is stopped for 10 ms in step 250.
After rotating in the RVS direction, in step 252 the motor 8
Stop 2.

(Motor Stop Processing 4) The motor stop processing 4 will be described with reference to the flowchart of FIG. In step 260, the disk number N is input to the microcomputer 140, and based on this input, the microcomputer 140 operates as follows.
Is controlled.

After being stopped for 100 ms in step 262, the motor 82 is rotated in the FWD direction in step 264, and the variable A is set to "0" in step 266. In step 268, “L” →
It is determined whether "H" is detected, and step 268 is continued until the signal becomes "H".

If step 268 is affirmative, step 270 sets variable A to y and step 272
Then, it is determined whether the variable A is 400 ms or more. When step 272 is negative, the processing from step 216 of the flowchart (motor stop processing 3) of FIG. 42 is continued,
When step 272 is affirmative, the processing from step 186 of the flowchart (motor stop processing 3) of FIG. 41 is continued.

(Motor Stop Processing 5) The motor stop processing 5 will be described with reference to the flowcharts of FIGS. 44 and 45. In step 280, the disk number N is input to the microcomputer 140, and the microcomputer 140 is controlled as follows based on this input.

In step 282, for 100 ms,
After stopping, the motor 82 is turned on in step 284.
Rotate in VS direction. In step 286,
It is judged whether "H" → "L" is detected, and step 2
86 continues until the signal goes low.

If step 286 is positive, the count value I is set to "0" in step 288, and the variables A, B, and C are set to "0" in step 290. Then, in step 292, “H” →
It is determined whether "L" is detected, and step 292 is continued until the signal becomes "L". When step 292 is affirmative, the count value I is set to “1” in step 294.
Is added, and the variable B is set to x in step 296.
(“H” length ms).

In step 298, "H" → "L"
Is detected, and step 298 is continued until the signal becomes "L". If step 298 is positive, the variable C is set to x in step 300, and
In step 302, it is judged whether or not the variable C is equal to or larger than the variable 2B (twice B) (as shown in FIG. 51D, the length "H" twice as long as the previously detected length "H" is set. Judge whether or not detected).

When the result in step 302 is negative, it is determined in step 304 whether or not the variable C is equal to or larger than the variable 1 / 3B (1/3 times B) (the length of the previously detected "H" is 1). / 3
It is judged whether or not the double "H" is detected).

If step 304 is affirmative, it is determined in step 308 whether "L" → "H" is detected, and step 308 is continued until the signal becomes "H". If step 308 is positive, step 310
Set the variable A to y.

Subsequently, in step 312, the variable A
Is 400 ms or more. If step 312 is negative, the process returns to step 306, and if step 312 is affirmative, the process returns to step 286 to count the count value I again.

When step 304 is negative, after adding "1" to the count value I in step 314, the variable B is changed to the variable C in step 316 (that is, x of the variable B is replaced with x of the variable C). (Set to a numerical value) together with step 318
Sets the variable C to "0". After the process of step 318, the process returns to step 298, and this process is repeated until the disc number is determined.

If step 302 is affirmative, the numerical value obtained by subtracting "1" from the count value I in step 320 is equal to the disk number N, or the numerical value obtained by adding "4" to the count value I is equal to the disk number N. (Ie,
It is determined whether or not the CD tray 14 has rotated to the position of the disc number N). If step 320 is negative, the process returns to step 286, and if step 320 is positive, the variable A is set to y in step 322.

Then, in step 324, the variable A
Is greater than or equal to the variable 4C (four times C) (as shown in FIG. 22A, is "H" four times as long as the length of "L" being detected? Determine whether or not). When step 324 is negative, the process returns to step 324, and the process of step 324 is continued while changing the value of y of the variable A. If step 324 is positive,
The motor 82 rotating in the RVS direction in step 326.
Slow down.

Further, in step 328, "L"
→ It is judged whether or not "H" is detected, and step 328 is continued until the signal becomes "H". When step 328 is affirmative, the motor 82 is stopped for 6 ms in step 330, and the motor 82 is decelerated in the FWD direction in step 332. Then, in step 334, it is determined whether "H" → "L" is detected, and step 334 is continued until the signal becomes "L". If step 334 is positive, the motor 8
After rotating 2 in the 10 ms RVS direction, step 25
At 2, the motor 82 is stopped.

(Motor Stop Processing 6) The motor stop processing 6 will be described with reference to the flowchart of FIG. In step 342, the disk number N is input to the microcomputer 140, and based on this input, the microcomputer 140 operates as follows.
Is controlled.

After the motor is stopped for 100 ms in step 344, the motor 82 is rotated in the FWD direction in step 346, and the variable A is set to "0" in step 348. Then, after step 346, the processing from step 306 of the flowchart (motor stop processing 5) of FIG. 44 is continued.

(Motor Stop Processing 7) The motor stop processing 7 will be described with reference to the flowcharts of FIGS. 47 and 48. In step 400, the disk number N selected by the user is input to the microcomputer 140, and based on this input, the microcomputer 140 is controlled as follows.

In step 402, for 100 ms,
After stopping, the motor 82 is turned on in step 404.
Rotate in the VS direction, and in step 406, change the variable A
Is set to "0".

In step 408, it is judged whether or not "L" → "H" of the sensor 110 is detected, and step 4
08 is continued until the signal changes from "L" to "H".
If step 408 is positive, step 410 sets variable A as y.

Then, in step 412, the variable A
Is greater than or equal to 300 ms, and if step 412 is negative, the process returns to step 406. If step 412 is affirmative, it is determined whether or not “H” → “L” is detected at step 414, and if step 414 is affirmative, the disk number is prepared for detection. That is, step 4
When 14 is affirmative, the count value I for counting the disk number is set to "0". The process of step 414 is continued until the signal becomes "H".

Further, in step 418, variables A, B, C
Are set to “0” respectively, and in step 420, “H” →
It is determined whether or not "L" is detected. Step 420
Continues until the signal goes low. Step 42
If 0 is affirmative, "1" is added to the count value I in step 422, and the variable B is set to x (the length m of "H" is m).
s).

Then, in step 426, "H"
→ It is judged whether or not "L" is detected, and step 426 is continued until the signal becomes "L". If step 426 is positive, the variable C is set to x in step 428, and the variable C is set to the variable 2B (twice B) in step 430.
It is judged whether or not it is equal to or more than 2 (the length of the previously detected “H” is 2
It is judged whether or not the double "H" is detected).

When step 430 is negative, it is judged at step 432 whether the variable C is equal to or larger than the variable 1 / 3B (1/3 times B) (the length of the previously detected "H" is 1). / 3
It is judged whether or not the double "H" is detected).

If step 432 is affirmative, the procedure returns to step 406 to prepare for detecting the disk number. If the result in step 432 is negative, “1” is added to the count value I in step 434, and then the variable B is added in step 436.
Is set to the variable C (that is, x of the variable B is set to the numerical value of x of the variable C), and the variable C is set to “0” in step 438.
Set to. After the processing of step 438, step 42
The process is returned to 6 and the subsequent processes are performed, and this process is repeated until the disc number is determined.

If step 430 is affirmative, the numerical value obtained by subtracting "1" from the count value I in step 440 is equal to the disk number N, or the numerical value obtained by adding "4" to the count value I is equal to the disk number N. To judge. If step 440 is negative, the process returns to step 406, and if step 440 is positive, the motor 82 is stopped for 6 ms in step 442.

Then, in step 444, the motor 82 is set to 1
After rotating in the 0 ms FWD direction, the motor 82 is stopped for 6 ms in step 446, and the motor 82 is decelerated in the RVS direction in step 448.

At step 450, "H" → "L"
Is detected and step 450 is continued until the signal becomes "L". If step 450 is positive, the motor 82 is stopped for 6 ms in step 452, and the motor 82 is decelerated in the FWD direction in step 454. Then, in step 456,
It is judged whether or not “L” → “H” is detected, and step 4
56 continues until the signal goes "H". Step 4
If 56 is affirmative, the motor 82 is stopped for 6 ms in step 458, and the motor 82 is stopped in step 460.
Is rotated in the RVS direction for 10 ms, and the motor 82 is stopped in step 462.

(Motor Stop Processing 8) The motor stop processing 8 will be described with reference to the flowchart of FIG. In step 470, the disk number N is input to the microcomputer 140, and based on this input, the microcomputer 140 operates as follows.
Is controlled.

At step 472, the motor 82 is stopped for 100 ms, and at step 474, the motor 82 is RV.
Rotate in S direction. In step 476, “H”
→ It is determined whether or not "L" is detected, and step 476 is continued until the signal becomes "L". When step 476 is affirmative, the processing from step 416 of the flowchart (motor stop processing 7) of FIG. 47 is continued.

In the motor stop processings 1 to 8 of this embodiment, the length of "H" is always measured, and the motor stop processing is performed with the value of "H" measured immediately before as the reference length. , As described above during the measurement of “H”, the CD tray 14
If is pressed by hand or is restrained, the length of "H" becomes longer than usual, and the position of the CD tray 14 may not be normally detected.

Therefore, as described above, "H" is being measured.
Is less than ⅓ of the “H” length measured immediately before, it is determined to be a malfunction (steps 140 and 21).
4, 304, 432) and the process for detecting the disk number (steps 106, 186, 306, 406) is performed, and the motor stop process is restarted from here.

As described above, according to this embodiment, since the length of "H" is detected while constantly detecting and updating the reference length of "H", the CD due to changes in ambient temperature or the like is detected.
Since it is possible to know the rotational position of the CD tray 14 without being affected by the change in the rotational speed of the tray 14 and to be sure that the malfunction such as mechanical restraint has occurred, it is possible to take appropriate measures.

In the present embodiment, the motor stop process 1
As described in 8 to 8, after the CD tray 14 rotating in the FWD direction or the RVS direction is set to the same rotation direction (RVS direction) immediately before the motor stop processing (steps 162, 250, 338, 460), Slit as a stop reference portion (portion indicated by arrow A or arrow B in FIG. 35)
Stop as a reference. Therefore, according to the present embodiment, the CD tray 14 can be reliably stopped at the stop position (the position of arrow A or arrow B in FIG. 35) with the same error amount. Further, according to the present embodiment, since the single sensor 110 can detect the stop position of the tray, it is not necessary to increase the number of sensors, and the disk device S can be manufactured at low cost.

Further, in the present embodiment, even when the rotation speed of the CD tray 14 changes depending on the surrounding environment, as shown in FIG.
The CD tray 14 is based on the pulse width such as the interval (L20) between the slits 121 to 125 shown in 1 (C) to (G).
Since it decelerates (stops), there is no false detection and the CD
The tray 14 can be stopped at the stop position (in this example, the position of arrow A or arrow B in FIG. 22), and the conventional stop reference portion can be eliminated, which saves space.

Next, the initial operation when the power is turned on prior to the operation of the disk device will be described. Down switch 15
4B is on (when the playback device 16 is at the bottom). 1. The motor 24 is rotated in the CW direction. 2. When the open switch 152A is turned off and the close switch 152B is turned off, the CD tray 14 is rotated to the B position of the slits 121 to 125.

(Explanation of Control System of Disk Device S) FIG.
An example of the control system of the disk device S of this embodiment is shown in FIG.

The microcomputer 140 includes a sensor 104 for detecting whether or not a disc CD is placed on the disc placing portion 114 (see FIG. 1) of the CD tray 14, a sensor 110 for detecting the rotational position of the CD tray, Servo control circuit 1
42, signal processing system 144, amplifier 148, key operation unit 1
50, an open switch 152A for detecting the open state of the tray 12, a close switch 152B for detecting the closed state of the tray 12, and a pickup device 16
A reproduction switch 154A that detects that the pickup device 16 is in the reproduction position (see FIG. 28) and a down switch 154B that detects that the pickup device 16 is in the lowest position are connected.

To the servo control circuit 142, the motor 24 for moving the tray 12, the motor 72 for driving the turntable 74 (see FIG. 28), the motor 82 for rotating the CD tray 14, the pickup 76 and the pickup 76 are sent. The feed motor 156 and the RF amplifier 158 are connected to each other.

The turntable 74 is driven by the spindle motor 72, and the disc CD is rotated. Laser light from a semiconductor laser (not shown) of the pickup 76 is emitted to the selected disc CD and this reflected light is supplied to the pickup 76. The output from the pickup 76 is supplied to the RF amplifier 158. Although not shown, an APC circuit for controlling the drive current of the photodiode is connected to the semiconductor laser so that the optical output of the laser light is always constant.

The output from the pickup 76 is supplied to the amplifier 148 after the digital audio signal is converted into an analog audio signal through the RF amplifier 158, the signal processing system 144 and the D / A converter 160. The amplifier 148 amplifies the analog audio signal supplied from the D / A converter 160 and supplies the amplified analog audio signal to the speaker 162, which outputs it as sound.

The focus error signal and tracking error signal from the RF amplifier 158 are supplied to the servo control circuit 142, and the servo control circuit 142 performs tracking servo and focus servo of the pickup 76. Further, the servo control circuit 142 controls the rotation of the spindle motor 72 and, at the same time, the feed motor 156.
Is controlled to move the objective lens 78 (see FIG. 12A) to a predetermined position. The operation of the servo control circuit 142 is controlled by the microcomputer 140 that constitutes the system controller.

In the disc device S according to the present embodiment, in the disc change mode, another disc CD is placed on the disc placing section 114 on which the disc being reproduced (hereinafter, selected disc CD) CD is placed. In this case, the microcomputer 140 interrupts the closing operation of the tray 12 so as to prevent the discs other than the selected disc CD from being placed on the disc placing portion 114 based on the detection signal of the sensor 104, and displays (warning). ) Do.

The key operation unit 150 includes an open / close key. When the tray 12 is open and this key is operated, the tray 12 is closed, and when it is operated in the closed state, it is opened. ing. As described above, in the present embodiment, one key that uses both the open key and the close key is used.
You may make it provide separately.

Further, the key operation section 150 also includes a disc change key for instructing the disc change mode.

Open from the closed (open) state
When the tray 12 is opened (closed) by operating the close key, the microcomputer 140 releases the chucking state by the pickup device 16,
Tray 14 from the closed position to the open position (from the open position to the closed position)
The tray 12 is controlled to open while rotating.

On the other hand, when the disc change key is operated from the closed state to open the tray 12,
While the reproduction state of the disc CD is continued, the tray 12 is opened and then the CD tray 14 is rotated so as to be in the open position. In this state, when closing the tray 12 by operating the disc change key or the open / close key, the CD tray 1
4 is rotated to the closed position and then the tray 12 is closed.

In the disc change mode, the disc CD is chucked by the pickup device 16. Therefore, when the CD tray 14 is rotated, the selected disc CD or pickup device 16 in the chucking is discriminated by the CD tray 14 or Another disk CD placed on this will collide. Therefore, even if the tray 12 is opened and the CD tray 14 is rotated, the CD tray 14 and the pickup device 16 are completely separated from each other so that they do not hit each other, and then the CD tray 14 is controlled in this way in order to rotate. It is what

Further, since the CD tray 14 is rotated and then the tray 12 is closed in the disc change mode as described above, another disc C is placed on the disc placing portion 114 on which the selected disc CD is placed.
If D has been placed, CD tray 1
Since it is possible to detect that the disc CD is placed on the sensor 104 when the disc 4 rotates and passes over the sensor 104, it is possible to interrupt the closing operation of the tray 12 to warn the user and remove the disc CD. .

When the tray 12 is open, in addition to the open / close key, a direct key for directly designating the mounting number of the disc CD to be reproduced next, and the mounting number of the disc CD are sequentially displayed. The tray 12 can also be closed by operating a skip key or the like for selecting a disc CD to be reproduced by sending it from a younger number to a larger number.

In the disk device S of this embodiment,
When the tray 12 is open in the stopped state, when the tray 12 is pushed in the closing direction by a hand or the like, and the tray 12 is moved in the closing direction by a predetermined distance, the open switch 152A changes from on to off. Detecting this change, the motor 82 is started to rotate, the CD tray 14 is started to rotate, and the motor 24 is rotated to perform an electrical closing operation.

However, when the tray 12 is pushed by the hand or the like in the disc change mode, the stopper piece 44D of the stopper plate 44 shown in FIG. The tray 12 is prevented from moving by coming into contact with the pin 100D.
In this way, since the collision of the disc CD as described above is avoided, in the disc change mode, only the electric closing operation by the operation of the key operation unit 150 is performed.

Hereinafter, the disk device S in this embodiment will be described.
The main operation of the whole including the drive system of the pickup device 16, the tray 12 and the like will be described.

(Explanation of Closed State in Stopped State) FIGS. 1, 25, 28 and 32 show this state.

That is, as shown in FIG. 28, in the cam gear 38, the cam portion 39D is rotated to the pickup device 16 side, the pin 32B of the joint lever 32 is located at the cam portion 39B, and the joint lever 32 is Most receding. The pin 36B of the operation lever 36 is located on the cam portion 39F of the cam gear 38, and the operation lever 36 is in the most counterclockwise rotated state. Since the operating lever 36 is rotating counterclockwise, the slider load 42 is at the most forward position, and the stopper plate 44 is at the most left-side position.

At this time, as shown in FIG. 16, the cam lever 34 is attached to the escape portion 12Y of the cam portion 12Z of the tray 12.
The manipulator 34D is positioned so that the cam lever 34 can freely rotate. Therefore, as shown in FIG. 25, the gear lever 28 is also rotatable according to the rotation direction of the motor 24. In the case of this embodiment, the gear lever 28 rotates clockwise, the cam lever 34 rotates counterclockwise, and the idler 60 meshes with the pinion 40 to make the tray 12 movable.

As shown in FIG. 32, the joint lever 3
Since 2 is in the retracted position, the plate cam 46 is also in the retracted position, and the pins 16A and 16A 'of the pickup device 16 are lower portions 47B and 47B' of the cams 47 and 47 'of the plate cam 46.
(See FIG. 13), the pickup device 16 is in the stopped position, which is lowered downward.

Since the pickup device 16 is on the lower side, the pin 16 is on the lower side of the elongated hole 48C of the clamper holding body 48, and the pins 48F and 48G of the clamper holding body 48 are the rails 20A and 20A of the clamper holding portion 20, respectively. 20B (see FIG. 4), the clamper 50 is in a raised state.

The CD tray 14 is stopped at the position shown in FIG. 1, and as shown in FIG. 29, the pin 100B of the lever 100 arranged on the tray 12 is engaged with the recess 14G of the engaging portion 14C of the CD tray 14. It is in a suitable position.

As shown in FIG. 15B, the mold spring 48H of the clamper holder 48 for absorbing the vibration is positioned in the locking hole 20H and holds the stopped state, and the mold spring 48H Sag is prevented.

At this time, as shown in FIG. 32, the open switch 152A is off, the close switch 152B is on, the reproduction switch 154A is off, and the down switch 154B is on.

(Description of Transition from Stopped State to Reproduced State) The motor 24 (see FIG. 26) is rotated in the forward rotation direction (CW direction) from the stopped state. Now, since the operator 34D shown in FIG. 16 is located in the escape portion 12Y and the cam lever 34 and the gear lever 28 are freely rotatable, as shown in FIGS. 26 and 27, rotation of the idler 60 causes the gear lever 34 to rotate. 28 is rotated counterclockwise about the spindle 23E. Then, the idler 60 meshes with the cam gear 38 via the gear 22C formed in the cabinet (see FIG. 27). At this time, pin 3 of the cam lever 34
By pushing 4C in the long hole 28B in the clockwise direction, the cam lever 34 is rotated, and the operator 34D is moved to the escape portion 1.
It is located on the left side of 2Y (see FIG. 16).

Therefore, according to this embodiment, the tray 12
Idler 6 as a swinging gear in conjunction with the closing operation of
Since the switching of the rotation direction of 0 is performed, it is possible to perform the quick switching which is an advantage of the swing mechanism.

When the motor 24 further rotates in the CW direction, the relay gear 29 shown in FIG. 27 rotates the cam gear 38 in the counterclockwise direction (CCW direction). Then, the pin 32B of the joint lever 32 is connected to the cam portion 3 of the cam gear 38.
The joint lever 32 moves forward by being moved from 9B to the cam portion 39C. The plate cam 46 connected to the joint lever 32 advances together with the joint lever 32, so that the pins 16A, 16 of the pickup device 16 are moved.
A ′ approaches the inclined portions 47C and 47C ′ (see FIG. 13) of the cams 47 and 47 ′, and the pickup device 16 starts to rise little by little. When the pickup device 16 starts rising, the down switch 154B is turned off.

The operating lever 36 does not rotate while the pin 36B of the operating lever 36 is passing through the cam 39F.

When the motor 24 further rotates in the CW direction to rotate the cam gear 38 in the CCW direction, as shown in FIG. 29, the pin 32B approaches the cam portion 39D and the joint lever 32 is in the most advanced state.

At this time, the lever 1 arranged on the tray 12
The projection 100C of 00 is the engaging surface 3 of the joint lever 32.
2F, the protrusion 100C is pushed by the engaging surface 32F, and the lever 100 is pushed by the notch 12C of the tray 12 (FIG. 29). Since the rotation of the lever 100 is blocked in this way, the rotation of the CD tray 14 can be blocked by the lever 100, and the optimum position is maintained when the selected disc CD is held on the turntable as described later. The CD tray 14 can be held in position, and mischucking can be prevented. Pin 32B after this
Is located at the cam portion 39D while the joint lever 32 is
Does not move.

The plate cam 46 connected to the joint lever 32 also advances, and the inclined portions 47C and 47C of the cams 47 and 47 'are moved.
The steep inclination from C ′ reaches the intermediate portions 47E, 47E ′, and the pickup device 16 also rapidly rises (FIG. 3).
3). During this time, the turntable 74 of the pickup device 16 is raised until it is located slightly above the disc mounting surface of the disc mounting portion 114. In this state, the selected disc CD is separated from the disc mounting portion 114 and is turned table. Held at 74. The height of the selected disc at this time is set so as not to interfere with other discs CD.

Further, when the cam gear 38 is rotated in the CCW direction, the pin 36B moves to the cam 38C, whereby the operation lever 36 starts rotating in the clockwise direction, and the slider load 42 is pushed backward and retracted. . Operation unit 42G
Since the slider load 42 and the pickup device 16 are connected to each other by the engaging portion 16C, the slider load 42
The pickup device 16 also moves backward due to the backward movement. When the pickup device 16 retracts, the pins 16A and 16A ′ move along the intermediate portions 47 and 47 ′ of the cams 47 and 47 ′, but the intermediate portions 47 and 47 ′ are gently inclined upward. Therefore, the pickup device 16 is guided by the intermediate portions 47, 47 'and the operation portion 42G of the slider load 42 and starts to move backward while gradually rising.

When the pickup device 16 retracts, the pins 48F and 48G of the clamper holding pair 48 retract along the rails 20A and 20B, the pin 48F begins to descend along the inclined portion 20D, and the mold spring 48H inclines. It begins to retreat while contacting the surface 20K.

At this time, the pin 44C is still in the straight portion 4.
Since it is in 2D, the stopper plate 44 is not moved.

When the cam gear 38 further rotates in the CCW direction, the pin 36B is moved to the cam 39E and the slider load 42 is further retracted, so that the pickup device 16 is guided by the intermediate portions 47, 47 'and the operating portion 42G. It rises and is retracted.

The pin 44C passes through the slanted portion 42E of the slider load 42 so that the stopper plate 4
4 is slid to the right.

Further, when the cam gear 38 rotates in the CCW direction, the slider load 42 is slid to the most retracted position (FIG. 28), and the pickup device 16 is moved to the intermediate portion 4.
7E, inclined portions 47G, 47G 'to upper portions 47H, 47
Guided by H'and the operating portion 42G, it moves upward while moving backward. The pins 16A and 16A 'are formed by the intermediate portion 47E and the inclined portion 4
When it comes to the connection part with 7G, the pin 20A has the inclined part 20D.
Has been moved to the horizontal portion 202A of the disc, and at this position the selected disc CD is turned by the turntable 74 and the clamper 50.
Is chucked. After that, as the pins 16A and 16B are moved to the upper portions 47H and 47H ′, the pins 20A
Rises again along the inclined portion 20D.

The inclination of the inclined portion 47G is steeper than the inclination of the inclined portion 47G ', and the rail 20B is inclined downward as it is and the rail 20A is raised again again.
Since 3A is formed, the pickup device is moved up greatly on the front side on which the turntable 74 is arranged as compared with the rear side, and after the chucking is performed together with the clamper 50, the selected disc CD is reproduced for reproduction. Even if the selected disc CD is rotated, it is completely separated from the CD tray 14 so as not to interfere with the CD tray and other discs CD.

At this time, the mold spring 48H is arranged on the hook portion 20G so as to maintain the reproduction state and absorb the vibration or the like due to an external force. Also,
In this reproduction state, the reproduction switch 154 is operated to be turned on.

In this embodiment, when the pickup device 16 moves, the pin 16D of the pickup device 16 moves.
Is inserted into the long hole 48C of the connecting portion 48B of the clamper holding body 48 and the pickup device 16 and the clamper holding body 48 are connected, so that the clamper 50 moves as the turntable 74 on the pickup device 16 moves. .

That is, in the pickup device 16 and the clamper holder 48, the placement surface position of the placement surface 114A (or 114B) on which the turntable 74 and the clamper 50 place the selected disk CD in synchronization (shown in FIG. 36). Position) and a chucking position (position shown in FIG. 34) where the selected disc CD is held between the turntable 74 and the clamper 50.

Therefore, according to this embodiment, since the chucking of the turntable 74 and the clamper 50 with respect to the selected disc CD or the detaching operation thereof is performed in conjunction with the pickup device 16, the mounting surface 114A (or 11).
This prevents mischucking of the selected disc CD in which chucking arranged obliquely in 4B) and loading are successively performed.

When the reproduction state is changed to the stop state, the motor 24 is further rotated in the CW direction and the cam gear 38 is rotated once to return to the original stop state.

Here, a case where the chucking operation is started in a state where the disc CD is not in contact with the side wall 114C of the mounting surface 114A for some reason will be described.

The pins 16A, 16A 'are connected to the intermediate portions 47, 4
7'and when the pickup device 16 starts to move upward while retracting, in a normal state, the protrusion at the center of the turntable 74 has the center hole CDH of the disc CD.
(See FIG. 37), the disk CD is operated as described above, but the disk CD has side walls 114 of the mounting surface 114A.
When not in contact with C, the central projection of the turntable 74 comes into contact with the inner peripheral portion of the front side (left side in FIG. 21B) of the center hole CDH of the disk CD, and the center of this contact portion is used. Then, the disc CD rises as it rotates backward (to the right in FIG. 21B).

However, since the stopper 116 is provided on the front side (left side) of the disc CD, its end portion is prevented from coming into contact with the stopper 116 and rotating rearward (right side). At this time, friction is generated between the end of the disc CD and the stopper 116. Turntable 7
4 moves up while retracting together with the pickup device 16, but the disc CD stays in the same place due to friction with the stopper 116.

As shown in FIG. 20 (B), when the turntable 74 is further retracted, its protrusion is brought into the center hole CDH of the disc CD and enters into it, and thereafter, in the same manner as in the normal state. Is chucked.
In this way, the stopper 116 also acts to prevent mischucking of the disc CD.

(Explanation of the operation of opening or closing the tray 12 from the stopped state) In the stopped state, the open switch 152A is off, the close switch 152 is on, the reproduction switch 154A is off, and the down switch 1
54B is turned on.

The motor 24 is rotated in the reverse direction (CC
When rotated in the W direction), as shown in FIG. 25, the rotation is transmitted to the pinion 40 via the relay gear 29 idler 60, and the pinion 40 is rotated in the CW direction.

At this time, the gear lever 28 has the rib 23.
The rotation is regulated by I, which causes the cam lever 3 to rotate.
No. 4 is restricted from rotating further counterclockwise. When the pinion 40 is rotated clockwise by the idler 60, the cam lever 34 is constantly urged counterclockwise by its rotational force, and the operating element 34D does not enter the escape portion 12Y.

The rack 12A is always meshed with the pinion 40, and the rack 12A is driven to move the tray 12A.
Moves forward and the close switch 152B is turned off. Further, the tray 24 is moved forward by rotating the motor 24 in the CCW direction, and when the tray 12 is completely moved forward, the open switch 152A is turned on. The rotation of the motor 24 is stopped by this ON signal.

Almost at the same time when the motor 24 starts rotating, the motor 82 starts rotating, the CD tray 14 is rotated, and the position A of the side wall 120 of the CD tray 12 described above is changed.
The stop process 2 or 6 of the motor moving from B to B is stopped to stop the motor 82.

At this time, the pin 100B of the lever 100 is rotated against the biasing force and is positioned at the inflating portion 14F. At this time, the stopper plate 44 is at the position slid to the left end, and the stopper piece 44D has the pin 1
It does not face 00D (see FIG. 30). This brings the open state as shown in FIG.

In this state, when the tray 12 is closed by operating the key operation unit 150, the motor 24
In the CCW direction. In addition, when the tray 12 is pushed in by the hand in the closing direction, the pushing force causes the tray 12 to be closed.
Moves backward and the open switch 152A is turned off. The motor 24 is rotated in the CCW direction by detecting that it is turned off. The rotation of the motor 24 causes the gear lever 28 to rotate.
Receives a force that rotates counterclockwise, but the cam lever 34
The operator 34D contacts the linear portion 12Z of the cam portion 12W to prevent its rotation, and the gear lever 28 and the relay gear 29 attached thereto are held in the clockwise rotated position, and the idler 60 and the pinion are held. The meshing of 40 and the rack 12A cannot be disengaged. Therefore, tray 1
2 is driven in the backward direction.

When the tray 12 is retracted and the close switch 152B is turned on, it is detected that the tray 12 is in the closed state, and the motor 24 is stopped.

Almost at the same time when the motor 24 starts to rotate, the motor 82 starts to rotate and the CD tray 14 is rotated to be placed in the closed position as shown in FIG.
The stop process 2 or 6 of the motor moving from the side wall B to A is performed to stop the motor 82.

At this time, the pin 100B of the lever 100 is locked in the recess 14E against the urging force of the spring 102. In this way, the closed state can be achieved.

(Explanation of Operation for Opening or Closing Tray 12 in Disc Change Mode) At this time,
Open switch 152A is off, close switch 1
52B is on, the reproduction switch 154A is on, and the down switch 154B is off.

The motor 24 is rotated in the CCW direction from the reproduction state. At this time, the manipulator 34D is located in the escape portion 12Y, so that the cam lever 34 can freely rotate. Therefore, the cam lever 34 rotates counterclockwise by the rotation of the motor, and the operator 34D moves from the escape portion 12Y to the straight portion 12Y.
The idler 60 rotated to the Z side meshes with the pinion 40, and the tray 14 can be driven in the forward direction.

Then, the motor 24 is rotated in the CCW direction until the open switch 152A is turned on to open the tray 12. When it is detected that the open switch 152A is turned on, the motor 82 is rotated, and the motor stop processing 2 or 6 is performed to stop the motor 82. At this time, the pin 100B of the lever 100 is located at the bulging portion 14F. In this way, the tray 12 can be opened in the disc change mode.

Here, as shown by the solid line in FIG. 31, the lever and the like for driving the pickup device 16 remain in the reproducing state. That is, the joint lever 32 is moved forward, the operation lever 36 is rotated clockwise,
Slider load 42 is in the retracted position, stopper lever 4
4 are arranged at the positions slid to the right.
Therefore, the pin 100D of the lever 100 is
It is located at a position facing the stopper piece 44D of the stopper plate 44.

At this time, when the tray 12 is pushed backward by hand, the pin 100D of the lever 100 abuts on the stopper piece 44D of the stopper plate 44, and the tray 1
2 cannot retreat. Therefore, in this state, the tray 12 must be closed by the key operation unit 150. The reason for this has been described above, and will be omitted.

That is, in the present embodiment, as shown in FIG. 31, even if the first tray 12 is forcibly inserted into the cabinet 10 in the disc change which is the second mode, the first stopper is not used. Pin 100 as part
D contacts the stopper piece 44D as the second stopper portion, and the insertion operation of the first tray 12 is stopped. Therefore, according to the present embodiment, the pin 100D is attached to the stopper piece 4.
The first tray 1 has a simple structure of abutting against the 4D.
The erroneous insertion operation of 2 can be suppressed.

When the key operation section 150 is operated to instruct the closing operation, the motor 82 rotates, the motor stop processing 2 or 6 is performed, and the motor 82 stops. Then, the pin 100B engages with the recess 14G, so that the lever 10
0 is rotated clockwise, and the pin 100D is arranged at a position not facing the stopper piece 44D (shown by an imaginary line in FIG. 31). Therefore, there is nothing to prevent the movement of the tray 12 after this, and the tray 12 can be retracted.

In response to the stop of the motor 82, the motor 24 starts rotating in the CW direction. Although the gear lever 28 tries to rotate due to the rotation of the motor 24, the operation element 34D of the cam lever 34 causes the linear portion 12Z of the cam portion 12W.
Since the rotation of the gear lever 28 is stopped by contacting the gear lever 28, the gear lever 28 is held in place, the meshing of the idler 60, the pinion 40, and the rack 12A is not disengaged, and the tray 12 is driven in the backward direction. And. When it is detected that the close switch 152B is turned on, it is determined that the tray 12 is in the closed state, and the motor 24 is stopped.

Further, almost at the same time when the motor 24 is stopped, as shown in FIG. 29, the projection 100C of the lever 100 arranged on the tray 12 comes into contact with the engagement surface 32F of the joint lever 32, and this engagement is performed. The protrusion 100C is pressed against the surface 32F and the lever 100 is pressed against the notch 12C of the tray 12. Since the rotation of the lever 100 is blocked in this way, the rotation of the CD tray 14 can be blocked by the lever 100, and when the selected disc CD is held on the turntable, the CD tray 14 is at the optimum position. Can be held in position and mischucking can be prevented. In this way, the tray 12 can be closed in the disc change mode.

The pick-up device 16 of the disk device S of the present invention can be applied in the same way not only to the optical type but also to the electrostatic type, for example.

The mounting surface formed on the disk mounting portion 114 may be other than five.

[0272]

According to the present invention, since the trays rotating in the forward and reverse directions are set in the same rotation direction and then stopped with the stop reference portion as a reference, the trays can be reliably moved to the stop position with the same error amount. Can be stopped. Further, according to the present invention, since the tray stop position can be detected by a single detecting means, it is not necessary to increase the detecting means.

[Brief description of drawings]

FIG. 1 is a plan view showing a disk device according to the present invention.

FIG. 2 is a front view showing a state in which a part of FIG. 1 is broken.

3 is a plan view of the cabinet shown in FIG. 1. FIG.

FIG. 4 is a sectional view taken along line 4-4 of FIG.

5 is a plan view showing a main part of the drive mechanism of FIG. 1. FIG.

FIG. 6 is a diagram showing a gear lever, in which A is a plan view thereof,
B is a sectional view.

FIG. 7 is a view showing a cover gear, in which A is a front view thereof,
B is a bottom view.

8A and 8B are views showing a joint lever, in which A is a plan view and B is a side view.

FIG. 9 is a diagram showing a slider lever, in which A is a plan view,
B is a sectional view.

FIG. 10 is a diagram showing a slider load, where A is a plan view, B is a right side view, and C is a front view.

FIG. 11 is a plan view showing a state where the slider lever is engaged with the slider load, wherein A is a diagram showing a state when the slider lever is attached to the slider load, and B is a diagram showing a state after attachment.

FIG. 12 is a diagram showing a pickup device, in which A is a right side view and B is a front view.

FIG. 13 is a view showing a plate cam, where A is a front view thereof and B is
Is a right side view.

14A and 14B are views showing a clamper holder, in which A is a right side view and B is a front view.

FIG. 15 is a sectional view showing a main part of a clamper holding part,
A is a view showing a state where the mold spring is engaged with the hook portion, and B is a view showing a state where the mold spring is locked in the locking hole.

FIG. 16 is a plan view of the tray.

FIG. 17 is a plan view of a tray in which a CD tray is arranged.

FIG. 18 is a bottom view of the CD tray.

FIG. 19 is a sectional view showing a main part of a disk presence / absence sensor.

FIG. 20 is a cross-sectional view showing a state in which the disc is placed on the placing surface 114A of the CD tray, A shows a state before the disc engages with the stopper, and B shows the disc engage with the stopper. It is a figure which shows the state which does.

FIG. 21 is a view showing a CD tray, A is a side view thereof, B is a sectional view showing a mounted state of a disc, and C to G are side views showing respective side walls.

FIG. 22 is a waveform diagram of a sensor that detects the rotation state of the CD tray.

23 is a diagram showing a configuration of a tray, A is a sectional view of 23-23 in FIG. 17, B is a diagram showing a mounted state of a CD tray, and C is a sectional view showing a side wall of the CD tray and a sensor. Is.

24 is a block diagram of the disk device shown in FIG. 1. FIG.

FIG. 25 is a plan view showing an operation (when the drive gear and the pinion are meshed) of the drive mechanism of the tray and the pickup device arranged in the cabinet.

FIG. 26 is a plan view showing the operation of the tray and the drive mechanism of the pickup device arranged in the cabinet (when the cam lever is rotated and the drive gear and the gear portion are meshed with each other).

FIG. 27 is a plan view showing the operation of the tray and the drive mechanism of the pickup device (when the drive gear and the cam gear are meshed) arranged in the cabinet.

FIG. 28 is a plan view showing a closed state in a stopped state.

FIG. 29 is a plan view showing a closed state in a reproducing state.

FIG. 30 is a plan view showing an open state in a stopped state.

FIG. 31 is a plan view showing a state where the tray is stored in the cabinet (storage prohibited state).

FIG. 32 is a cross-sectional view showing a state where the tray is stored in the cabinet (after storage).

FIG. 33 is a cross-sectional view showing a chucking state (while the pickup device is rising).

FIG. 34 is a cross-sectional view showing a chucking state (while the pickup device is rising).

FIG. 35 is a cross-sectional view showing a chucking state (after completion of lifting of the pickup device).

FIG. 36 is a cross-sectional view showing a state (before storage) in which the tray is stored in the cabinet.

FIG. 37 is a plan view showing a state where the tray is pulled out from the cabinet.

FIG. 38 is a flowchart showing a motor stop process 1.

FIG. 39 is a flowchart showing a motor stop process 1.

FIG. 40 is a flowchart showing a motor stop process 2.

FIG. 41 is a flowchart showing a motor stop process 3.

FIG. 42 is a flowchart showing a motor stop process 3.

FIG. 43 is a flowchart showing motor stop processing 4.

FIG. 44 is a flowchart showing motor stop processing 5.

FIG. 45 is a flowchart showing motor stop processing 5.

FIG. 46 is a flowchart showing a motor stop process 6.

FIG. 47 is a flowchart showing a motor stop process 7.

FIG. 48 is a flowchart showing motor stop processing 7.

FIG. 49 is a flowchart showing a motor stop process 8.

FIG. 50 is a timing chart at the time of FWD rotation.

FIG. 51 is a timing chart at the time of RVS rotation.

FIG. 52 is a diagram showing a slit of a disk device according to a conventional example.

[Explanation of symbols]

 14 CD Tray (Tray) 110 Sensor (Detection Means) 114 Placement Part 121-125 Slit (Stop Reference Part) 140 Microcomputer (Stop Means) CD Disk S Disk Device

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yoshinori Nitta 1-21-1 Ikenohata, Taito-ku, Tokyo Aiwa Co., Ltd.

Claims (4)

[Claims] 1. A method of controlling a disk device for selecting one disk from a plurality of disks and performing at least one of reproduction and recording, comprising: a plurality of mounting sections for mounting the plurality of disks; A rotatable tray on which a stop reference portion for stopping at a stop position corresponding to each of the plurality of mounting portions is formed, and the tray is rotatable in a clockwise direction and a counterclockwise direction, A method of controlling a disk device, characterized in that the stop conditions are the same when the tray is rotated clockwise and counterclockwise, respectively. 2. A method of controlling a disk device for selecting one disk from a plurality of disks and performing at least one of reproduction and recording, comprising: a plurality of mounting portions for mounting the plurality of disks; A rotatable tray formed with a stop reference portion for stopping at a stop position corresponding to each of the plurality of mounting portions; detection means for detecting the stop reference portion; and the tray having a first direction. When the tray is rotating, the rotation of the tray is decelerated after the detection unit detects the position corresponding to the selected placement unit, and the detection unit detects the stop reference unit. By doing so, the rotation of the tray is stopped, and the tray is rotated in a second direction different from the first direction for a predetermined time and then stopped, and then stopped. 3. When the tray is rotating in a second direction different from the first direction, after the detecting means detects a position corresponding to the selected mounting portion, the tray is The rotation of the tray is decelerated, the rotation of the tray is stopped by the detection means detecting the stop reference portion, and the tray is stopped again after the rotation of the tray is stopped. 3. The tray is stopped by rotating the tray in the second direction for a predetermined time while rotating the tray in the second direction for a predetermined time by rotating the tray in the second direction for a predetermined time while the detection means detects the stop reference portion again. A method for controlling the described disk device. 4. When the tray is rotating in a second direction different from the first direction, after the detecting means detects a position corresponding to the selected placing portion of the tray, The rotation of the tray is stopped and the first
The rotation of the tray for a predetermined period of time and stopping again, and further decelerating the rotation in the second direction to stop the rotation of the tray by the detection means detecting the stop reference portion,
And, after the tray is decelerated again in the first direction and the detecting means again detects the stop reference portion, the tray is stopped, and the tray is rotated in the second direction for a predetermined time. The method of controlling a disk device according to claim 2, wherein the method is stopped.