JP3415490B2 - Disk drive - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk drive device capable of driving an S disk and an L disk having an outer shape larger than that of the S disk in a compatible manner.

[0002]

2. Description of the Related Art Currently, a compact disc (hereinafter referred to as a CD) is used as a disc as a recording medium stored in a case.
Is widely used in the market, but in recent years, a disc as a recording medium housed in a case has been proposed.

The above-mentioned CD is a substantially disc-shaped digital audio optical disk, and includes what are commonly called 12 cm CD and 8 cm CD. The 12 cm CD has an outer diameter of 12 cm, a center hole as a driving hole through which the driving force from the turntable is transmitted, and an inner diameter of 15 mm and a thickness.
It is set to 1.2 mm, and the 8 cm CD has an outer diameter of 8 cm.
However, only the outer diameter is different from the above 12 cm CD, and the center hole and the thickness are set to be the same as those of the above 12 cm CD.

On the other hand, the disk as a recording medium housed in the above case is also a substantially disk-shaped digital audio optical disk, but the recording method on the disk surface is the reproduction-only case, which is similar to the CD when the disk is formed. It is recorded by pits with unevenness. On the other hand, in the case of recording and reproducing, it becomes a magneto-optical disk and is recorded and reproduced by a magnetic field modulation method.

The disk is housed in a case, its outer diameter is set to 64 mm and its center hole is set to 11 mm, and the inner diameter of the center hole is smaller than the inner diameter of the center hole of each CD.

Further, the case is molded into a substantially rectangular parallelepiped plate shape, and the width thereof is set to 68 mm, the length thereof is set to 72 mm, and the thickness thereof is set to 5 mm. It is smaller than the outer diameter of each CD, and conversely, the thickness of the case is larger than the thickness of each CD.

Therefore, as a disk drive device, for example, Japanese Utility Model Laid-Open No. 4-115347 (Japanese Patent Application No. 3-19052).
Each of the above CDs
By placing the case containing the discs and discs on the slider and moving them to the mounting position and the ejecting position, the center position of each disc and the center of the drive unit are aligned, and each disc is driven by a single drive unit. Have been proposed that can drive the.

[0008]

As described above, a single device is used.
You can play multiple recording media with different shapes
A device that is large is desired.
It was The present invention has been made in view of this point, and in particular,
Compactly drives CDs with different outer diameters, etc.
The purpose is to provide a disk device that can be modeled.
It

In order to solve the above-mentioned problems, the disk drive device of the present invention uses an S disk as a rotationally driven recording medium.
A drive means for respectively driving a disc and an L disc as a recording medium which is formed to have a larger outer diameter than the S disc and is rotationally driven; and a holding means into which the S disc or the L disc is inserted. The holding means has a disc guide member for guiding the S disc to the position for maintaining the connection between the S disc and the driving means at the driving position.
Movably provided et Re Rutotomoni, a pair of guide members which the inserted S disc guided to the disc guide member,
The guide members are provided to face each other so as to maintain a space corresponding to the outer diameter of the S disk, and when each of the guide members is pressed in a direction in which they are separated from each other, the guide members are displaced and urged in a restoring direction, When one of the guide members is pressed and displaced,
A blocking means is provided for blocking transmission to the disc guide member due to the displacement of the guide member. Further, when the L disc is inserted into the holding means and each of the guide members is displaced, the displacement of each of the guide members causes the displacement of the guide member. It is characterized in that guide portion retreating means for moving the disc guide member to a position that avoids obstruction of the insertion of the L disc is provided.

Therefore, according to the above configuration, the S
When the disc is inserted, it is stored in the disc guide member.
If the S disk is inserted evenly,
One of the inner members will be displaced, but the disc guide
Guidance that avoids the movement of members and is biased in the restoring direction
S-disk is made by the member and the tip of the disc guide member.
The disc can be securely stored in the disc guide member.
Wear.

Further, when the L disc having a diameter larger than that of the S disc is inserted, the guide members are displaced in the directions in which the guide members are separated from each other, so that the guide retreating means moves the disc guide members by the displacement of the guide members. By moving to a position that avoids obstruction of the insertion of the L disc,
The L disk can be inserted into a predetermined position of the holding means and can be driven by the driving means.

Thus, with the above configuration, the S disk and the L disk can be driven by a single drive means.

Further, in the invention, the holding means is the S
Connecting the disc and the L disc to the drive means
Attaching / detaching the drive position and the S disk and L disk
That it is designed to move to and from the attach / detach position
Characterize.

Therefore, according to the above configuration, the disc
Holding means is provided between the position for attaching / detaching and the position for driving
Position, drive the disc and attach / detach the disc.
It is possible to separate the position to be performed.

Further, according to the present invention, in the above-mentioned disk drive device, the guide members which are brought into contact with the L disk inserted in the holding means and are displaced at the attaching / detaching position are provided.
Separation means for displacing each of the guide members in a direction of separating from the L disk is provided.

Therefore, according to the above construction, since the separating means is further provided, the L disk inserted at the attaching / detaching position is inserted.
The contact between the guide member and each guide member can be released. As a result, the drive of the L disc by the drive unit can be facilitated.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to FIGS. 1 to 30. The disc reproducing device provided with the disc driving device has three
Each disc as a recording medium of a different type can be driven to reproduce and / or record.

Next, each of the above disks will be described.
Each of the discs is a digital audio optical disc. For example, as shown in FIGS. 2 and 3, the first disc is a disc 1 stored in a substantially rectangular parallelepiped case, and thereafter stored in the case. The created disc (first disc) is referred to as disc 1.

The second disk is a disk (second disk, S disk) 2 which is not stored in the case, the outer diameter of which is larger than the width and depth of the case of the disk 1, and from the turntable. Center hole (drive hole for the second disk) 2 to which the driving force of
The inner diameter of a is larger than the inner diameter of the center hole (driving hole of the first disc) 1g of the disc 1 and smaller than the outer diameter of a third disc (L disc) 3 described later,
Further, its thickness is smaller than that of the case of the disc 1.

The third disk is a disk 3 which is not housed in the case, the outer diameter of which is larger than the outer diameter of the disk 2, and the inner diameter of the center hole is the center hole of the disk 2. The inner diameter of the disk 2 is the same as that of the disk 2, and the thickness thereof is set to be the same as the thickness of the disk 2.

The dimensions of the discs 1, 2 and 3 are not particularly limited as long as they satisfy the above dimensional relations. Specific examples of the dimensions of the discs 1, 2 and 3 are as follows. First, the disc 2 has an outer diameter of 8 cm, a center hole inner diameter of 15 mm, and a thickness of 1.2 mm. Next, the disk 3 is set to have an outer diameter of 12 cm, a center hole inner diameter of 15 mm, and a thickness of 1.2 mm.

Finally, in the disc 1, the outer diameter of the disc body (first disc) 1c stored therein is set to 64 mm, and the center hole for transmitting the driving force from the turntable is set to 11 mm. Further, the case of the disc 1 is formed in a substantially rectangular parallelepiped plate shape, and the width thereof is 68 mm,
Its length is 72 mm and its thickness is 5 mm.

Therefore, the width and depth of the case of the disk 1 are smaller than the outer diameters of the disks 2 and 3, and conversely, the thickness of the case is larger than the thickness of the disks 2 and 3.

When the recording method on the disc surface of the disc body 1c is dedicated to reproduction, the disc body 1c is recorded by pits due to the unevenness at the time of molding the disc, like the discs 2 and 3, while on the other hand, in the case of recording / reproduction, It becomes a magneto-optical disk and is recorded and reproduced by the magnetic field modulation method.

In the disc 1, a disc body 1c is rotatably housed between an upper case 1a and a lower case 1b, and a turntable (driving means) insertion hole 1f is provided in the lower case 1b. ing.

Between the upper case 1a and the disc body 1c, there is provided a clamping plate 1d made of a magnetic material that is attracted when a magnet approaches and chucks the disc body 1c. The clamping plate 1d is inserted through the insertion hole 1f. When the disk is inserted into the disk 1, the magnet provided on the top of the turntable and the clamping plate 1d attract each other, and if the disk 1 is fixed, the disk body 1c is driven to rotate by the turntable. To be done.

Incidentally, the conventional turntable for exclusive use of a CD is not provided with a magnet, and the disc is rotatably driven by sandwiching the disc with the turntable and the disc holder as is well known.

Further, a slider 1e formed in a substantially U shape so as to sandwich the upper case 1a and the lower case 1b is provided so as to be reciprocable in the direction of arrow AB, and the disk 1 is indicated by the arrow. When it is moved in the direction A, the slider opening / closing mechanism moves the slider 1e in the direction of arrow B to expose the disk body 1c through the window 1h provided in the lower case 1b. And oppose each other, and the signal recorded by the optical pickup is reproduced.

In the disc 1 for both recording and reproduction, the upper piece of the slider 1e extends and the upper case 1a is also provided with a window so that the disc 1 moves in the direction of arrow A. The upper disk surface of the main body 1c is exposed and faces the magnetic head, and recording is possible by the interaction between the optical pickup and the magnetic head.

The disk 1 has a slider moving recess for opening the window 1h by moving the slider 1e, which is always biased in the arrow A direction, which is the closing direction, to the end of the slider 1e in the arrow A direction. 1i is provided.

Next, a disc reproducing apparatus equipped with a disc driving device capable of using the discs 1, 2 and 3 will be described. As shown in FIG. 4, the disc reproducing apparatus includes a lid 12 rotatably provided on a main body 11.
After partially inserting each of the discs 1, 2, and 3 into a holder (holding means) 13 that rotates in conjunction with the above, the discs 1, 2, and 3 are conveyed to a predetermined position, that is, a reproducible position and driven. .

Although not shown, the main body 11 includes a motor and a turntable for rotationally driving the discs 1, 2, 3 and an optical pickup for reading the recording signals of the discs 1, 2, 3 and the like. .

The lid 12 is located behind the main body 11 (arrow A).
Side) The upper part (arrow E side) and the vicinity thereof can be rotated in the arrow G direction (closing direction) or the arrow H direction (opening direction). Further, the holder 13 is mounted on the lid 12. A holder cover 18 that opens and closes is attached so as to be rotatable in an arrow G direction or an arrow H direction by a holder cover rotating means (not shown).

While the holder cover 18 is interlocked with the opening operation of the lid body 12 when the lid body 12 is opened, a different opening operation is performed in the direction of the arrow H, while the operator operates the holder cover 1.
When the lid 12 is closed by rotating 8 in the direction of arrow G, first, only the holder cover 18 covers the holder 13 on the lid 12 by the holder cover rotating means (not shown) (arrow G). After the holder cover 18 is completely rotated, the lid body 12 is rotated in the arrow G direction.

The holder 13 is formed by vertically assembling the upper holder 24 and the lower holder 25, and is formed so that the above-mentioned three types of discs 1, 2 and 3 can be inserted, respectively.・ 3 can be held in place. The above holder 1
The shape of 3 will be described in more detail below.

The holder 13 can rotate in the same direction in conjunction with the lid 12 in an integrated manner (it does not necessarily have to rotate integrally). A disc insertion portion 19 that is an opening into which the discs 1, 2, and 3 can be inserted is formed, and further extends from the front surface portion of the upper holder 24 to the central portion of the upper surface thereof, that is, extends from the disc insertion portion 19 in the direction of arrow A. A disc ejection hole 20 is formed.

Therefore, the disc take-out hole 20 allows the operator's hand to be inserted onto the adapter 21 which is normally exposed in the central portion of the lower holder 25, while it can be moved as will be described later. The center hole, which is the rotation center hole of each of the above-mentioned discs 1, 2 and 3, is located near the adapter 21 (which is moved as described later) in the state where the discs 1 and 2 are completely mounted. To position.

From the above, the disc take-out hole 2
Even if the mounting of the respective discs 1, 2 and 3 is completed, if the holder cover 18 is in the opened state, the operator's hand is placed in the center hole of each of the discs 1, 2 and 3, especially the discs 2 and 3. You can place it on each disc 1
You can easily take out 2.3.

Next, the disc insertion portion 19 will be described. As described above, the disc insertion portion 19 has
A temporary disk for temporarily placing each disk 1, 2, 3 when inserting each disk 1, 2, 3 on the upper surface of the lower holder 25 near the foremost surface, which is formed on the front surface of the holder 13. The placing surfaces 22, 23, 23 are respectively formed.

The temporary disk placing surface 22 is for the disk 1 and is located substantially in the center, while the temporary disk placing surface 23.
Numerals 23 are for the disks 2 and 3 and are provided on both sides of the temporary disk placing surface 22.

Case guides (first guide portions) 15 and 15 for guiding the movement of the disc 1 in the direction of arrow AB are provided at both ends of the disc temporary placing surface 22. Guides 15 and 15 are holders 13
Extends in the inner depth direction (direction of arrow A).

These disk temporary storage surfaces 22, 23, 23
A disc insertion portion 19 is formed on the side closer to the arrow A, and the disc insertion portion 19 has a first opening 14 for inserting the disc 1 as shown in FIGS. 5 and 6.
And a second opening 17 for inserting the respective discs 2 and 3
Is equipped with.

Recessed corner portions P1, P2, P of the upper holder 24 and the lower holder 25 forming the first opening 14 described above.
The substantially rectangular dimension connecting 3 and P4 sequentially has a vertical dimension slightly larger than the thickness of the case of the disk 1, for example, 5 mm +
The play size and the lateral size are slightly larger than the width of the case of the disk 1, for example, 72 mm + play size.

On the other hand, the concave corners Q1, Q2 of the upper holder 24 and the lower holder 25 which form the second opening 17,
The substantially rectangular dimension connecting Q3 and Q4 sequentially has a vertical dimension that is slightly larger than the thickness of the disks 2 and 3, for example, 1.2 mm +
The play size and the lateral size are slightly larger than the outer diameter of the disk 3, for example, 120 mm + play size.

In addition, the first opening 14 and the second opening 17 are formed so that their longitudinal center lines and their lateral center lines substantially coincide with each other, and share the common opening portion. Be prepared.

Therefore, when inserting the disc 1 into the holder 13, there is no other choice but to use the first opening 14.
Moreover, when inserting the disks 2 and 3 into the holder 13, there is no choice but to use the second opening 17. Therefore, the first opening 14 and the second opening 17 have the same function as the means in which the respective openings are provided at different places, so that the space can be saved.

Further, from the first opening 14 to the upper holder 24
The case guides 15 and 15 described above are provided in the inner part of the lower holder 25, and the case guides 15 and 15 and 15 and 15 are provided so as to extend further linearly.
From the second opening 17 to the upper holder 24 and the lower holder 2
Disk guides (second guide portions) 16 and 16 for guiding the movement of the disk 3 in the direction perpendicular to the plane of the drawing are provided in the inner part of the disk 5. The above is the description of the disc insertion portion 19.

Next, the movement of the disc to a predetermined position when each disc is inserted will be described. First, the mounting mechanism of the disc 1 will be described with reference to FIGS. 1 and 7 to 11.

As shown in FIGS. 1 and 7, the holder 13 is an upper holder 24 and a lower holder 25 which are vertically aligned and integrated.
A hollow portion is formed inside 3, and the front surface portion is the above-mentioned disc insertion portion 19, and each disc holding mechanism is provided in the hollow portion on the back side.

A substantially rectangular plate-shaped upper case holder 26 is attached to the upper holder 24, and a substantially rectangular plate-shaped lower case holder 27 is mounted to the lower holder 25, and the upper and lower case holders 26, 27 are substantially mutually attached. It is provided in parallel.

Further, the upper and lower case holders 26 and 27 are provided with arrow E of the case guides 15, 15, 15, and 15, respectively.
A disc 1 that is provided on a virtual plane including the -F direction plane and extends in the directions toward each other, and moves in the AB direction by each of the above-mentioned folding parts.
The blurring in the CD direction is regulated.

Of course, the upper and lower case holders 26
Since the face-to-face distance of the disc 27 is set to approximately the thickness of the disc 1, the disc 27 also regulates the blurring of the disc 1 in the vertical direction (EF direction in the drawing) and guides the movement of the disc 1 in the AB direction. I do.

The length of each bent portion is
Make sure that there is a sufficient gap between the opposite bent parts.
That is, Q1 and Q4 of the second opening 17 shown in FIG.
In addition, the setting is made so that the virtual line connecting Q2 and Q3 is not crossed, and obstruction to the insertion of the disks 2 and 3 described later is avoided.

An adapter (connecting means) for driving the discs 2 and 3 is provided from the central portion to the inner portion of the lower holder 25.
21, an adapter slider (supporting means) 28 that supports the adapter 21, and an adapter lever 29 that connects the adapter 21 and the adapter slider 28 are provided.

The adapter 21 can be coupled to the turntable 32 provided on the main body 11 when the lid 12 is closed in the direction of arrow G in a state where the adapter 21 does not move in the direction of arrow A. When coupled with 32, the rotational force of the turntable 32 allows the disc body 1c of the disc 1 to be rotationally driven via the adapter 21. The turntable 32 is driven by a spindle motor 63.

The adapter slider 28 is formed into a substantially L-shaped plate, and is a bent piece 27a of the lower case holder 27.
The guide pins 27b, 27b are movably inserted into guide grooves provided so as to extend in the direction of arrow AB, so that they can be slid in the direction of arrow AB, respectively.

Further, the adapter slider 28 is provided with a bending piece 28a which is erected upright so as to abut the disk 1 inserted in the end surface on the arrow B direction side, and is biased in the arrow B direction by a spring (not shown). The stopper does not move in the direction of arrow B and is set at a predetermined position.

As a result, the adapter slider 2
When the disc 1 is inserted in the direction of the arrow A, the bending piece 28a and the disc 1 contact each other, and the pressing force of the disc 1 resists the urging force of the spring and moves along with the movement of the disc 1. Move in direction A. The bent piece 28a is provided between the guides 15 and 15 and has a height that does not hinder the movement of the disks 2 and 3.

The adapter lever 29 has an arrow A
The direction end is rotatably attached to the end of the adapter slider 28 in the direction of arrow A through a pair of hinges 28b, 28b, and is rotated by a spring (not shown) in the counterclockwise direction of arrow G. In addition to being biased to, the rotation in the direction of arrow G is restricted by a stopper (not shown).

Since the adapter 21 is attached to such an adapter lever 29, the adapter 2
1 is slightly movable in the EF direction, which is the vertical direction. In addition, the rotation restricting position of the adapter lever 29 in the direction of the arrow G in the above stopper is set to the disk 2.3.
When the disk is inserted, the contact between the top of the adapter 21 and the disks 2 and 3 can be avoided.

Further, in the lower holder 25, a slide lever 30 which moves in the direction of arrow A as the adapter slider 28 moves in the direction of arrow A, and the slide lever 3 described above.
A slide opening / closing lever (slider opening / closing means) 31 that rotates with the movement of 0 is provided.

The slide lever 30 is formed in a substantially T-shape, a base portion of which is provided so as to be movable in the direction of arrow AB, and a guide hole (transmission) having a long hole extending in the direction of arrow AB is formed in the base portion. Release means) 30a and an arrow C-
A long hole 30b extending in the D direction is provided, and is biased in the arrow A direction by a spring (not shown). A guide pin 28c standing on the adapter slider 28 is inserted into the guide hole 30a.

The urging force of the adapter slider 28 in the direction of arrow B is set to be larger than the urging force of the slide lever 30 in the direction of arrow A, and the adapter slider 28 is inserted before the disc 1 is inserted. Pin 2
8c is an arrow B of the guide hole 30a of the slide lever 30.
The position of the slide lever 30 is regulated by contacting the end portion in the direction.

Therefore, when the adapter slider 28 moves in the arrow A direction, the slide lever 30 moves in the arrow A direction by the urging force of the spring.
A stopper (not shown) that sets the amount of movement of the slide lever 30 in the direction of arrow A is provided.

The slide opening / closing lever 31 is formed in a substantially V shape, and the pin 31 is erected on the tip of one arm.
a is inserted into the slot 30b, and a Z-bent bent piece 31b is provided at the tip of the other arm.

As a result, when the disc 1 is inserted into the holder 13, the slide opening / closing lever 31 moves through the adapter slider 28 and the slide lever 30 into the spindle 31.
It is rotated clockwise about c, and the bent piece 31b
Fits into the slider moving recess 1i of the disk 1 and abuts on the closing end of the slider 1e in the direction of arrow A.

Further, when the disc 1 is inserted in the direction of arrow A, the movement of the slide lever 30 in the direction of arrow A is restricted by the stopper (not shown) against the urging force thereof. The movement of the slider 28 in the direction of arrow A is performed by the guide hole 3 of the slide lever 30.
0a, guide pin 2 of the adapter slider 28
Since 8c is inserted, there is no inhibition.

Therefore, the bending piece 31b restricts the movement of the slider 1e of the disk 1 which moves in the direction of arrow A, and opens the slider 1e against the biasing force in the closing direction. It is designed to be moved to.

Next, the operation relating to the insertion of the disc 1 will be described. First, as shown in FIGS. 1 and 7, the disc 1 is inserted into the holder 13 by the operator.
At this time, a sensor (not shown) detects that the disc 1 has been inserted, and a disc retracting mechanism (conveying means), which will be described later, operates, and the disc 1 is retracted in the direction of arrow A, which is the depth direction of the holder 13.

The disk 1 thus drawn in contact with the bent piece 28a of the adapter slider 28, and the adapter slider 28 moves in the direction of arrow A along with the movement of the disk 1, so that the adapter 21 and the adapter lever 29 are moved. , And the slide lever 30 biased in the arrow A direction moves in the arrow A direction.

At this time, the slide opening / closing lever 31 rotates clockwise in accordance with the movement of the slide lever 30, and the bent piece 31b of the slide opening / closing lever 31 is fitted into the slider moving concave portion 1i of the disk 1. After that, the slide lever 30 comes into contact with the stopper 25a provided upright on the lower holder 25, the movement of the slide lever 30 in the direction of arrow A is stopped, and the rotation of the slide opening / closing lever 31 is also stopped.

Further, the disk 1 moves in the direction of arrow A, and the adapter slider 28 and the adapter lever 2
9. The adapter 21 also moves in the direction of arrow A, but since the slide lever 30 is stopped, the pin 28c of the adapter slider 28 separates from the end of the guide hole 30a of the slide lever 30 in the direction of arrow B.

Eventually, as the disc 1 moves further, as shown in FIGS. 8 and 9, when the lid 12 is closed at a predetermined position, the turntable 32 is inserted into the insertion hole 1f of the disc 1. Then, when the position where the turntable 32 is inserted is reached, the operation of the disk retracting mechanism is stopped.

From the time when the movement of the slide lever 30 is stopped, that is, the rotation of the slide opening / closing lever 31 is stopped to the time when the movement of the disk 1 is stopped, the disk 1 is stopped.
Since the movement of the slider 1e is stopped by the bent piece 31b of the slide opening / closing lever 31, the slider 1e is opened with the movement of the disc 1, and the disc body 1c is exposed on the lower surface of the disc 1. . In the case of a recordable disc, the disc is also exposed from the upper surface of the disc 1.

Further, since the adapter 21 has moved to the inner part of the holder 13 and has moved to a position where it does not come into contact with the turntable 32 at all, even if the lid body 12 is rotated in the closing direction, the adapter 21 is It does not come into contact with the turntable 32, and an obstacle to the closing operation of the lid 12 is avoided. Further, retracting the adapter 21 toward the center of rotation of the lid body 12 can reduce the movement amount of the adapter 21 and save space.

Then, the lid body 12 shown in FIG. 8 and FIG.
When the operator pushes the pivot end downward in the F direction in the drawing to rotate in a counterclockwise direction, that is, in the direction of arrow G, the lid body 12 is moved as shown in FIGS. 10 and 11. Then, it becomes a closed state.

At this time, the turntable 32 is fitted into the center hole 1g of the disc 1 through the turntable insertion hole 1f of the disc 1, and the magnet provided on the turntable 32 causes a clamping plate (not shown) in the disc 1 to be inserted. ) Is sucked, the disc body 1c is pressed against the turntable 32, and the rotational driving force of the turntable 32 is transmitted to the disc body 1c without waste.

On the other hand, the disc retainer 33 provided on the holder cover 18 descends and moves in the direction of arrow F in the figure,
The disc retainer 33 holds the position of the disc 1 by pressing the disc 1, and the disc 1 is in a reproduction standby state.

As shown in FIGS. 12 and 13, a taper protrusion 11a which abuts on the adapter slider 28 and moves in the direction of arrow A is provided at a position facing the lid 12 of the main body 11, When the adapter slider 28 that rotates together with the lid 12 is closed moves in the direction of arrow A, the bent piece 28a of the adapter slider 28 separates from the disc 1 as shown in FIG. It is like this.

As a result, as shown in FIGS. 10 and 11, the adapter slider 28 does not hinder the movement of the disc 1 in the direction of arrow A when the turntable 32 is fitted into the center hole 1g of the disc 1. The positioning of the disc 1 is smoothly performed.

Next, the mounting mechanism of the disks 2 and 3 will be described. As shown in FIGS. 14 and 15, when the disc 3 (same for the disc 2) is inserted into the holder 13, it comes into contact with the above-mentioned components of the mounting mechanism of the disc 1, particularly the bending piece 28a of the adapter slider 28. do not do.

This is because the disk 3 moves along the plane including Q2 and Q3 shown in FIG.
This is because if a is set so as not to exceed the plane, contact between the inserted disc 3 and the bent piece 28a is avoided.

Therefore, the adapter 21 does not move at all when the disc 3 is inserted,
When the lid 12 is closed after the disc 3 is inserted into the holder 13, the adapter 21 is coupled with the turntable 32, and the center hole of the disc 3 is fitted with the adapter 21, as shown in FIG. By sandwiching the disc 3 between the disc retainer 33 and the adapter 21, the disc 3 is in a reproduction standby state.

It should be noted that, as shown in FIG. 15, the bending piece 31b of the slide opening / closing lever 31 has the possibility of obstructing the insertion of the disk 3 from the set height position when the disk 3 is mounted. There is a bent piece 31b
Is set so as to be retracted to a position where the disk 3 is not abutted at the mounting position.

On both sides of the lower holder 25,
Guides 16 and 16 for guiding the movement of the disk 3 in the direction of arrow AB are provided. Further, as shown in FIG. 17, guides 16 and 16 for guiding the movement of the disc 3 in the directions of arrows AB are provided on both side portions of the upper holder 24. By the guides 16 ... As described above, the insertion of the disc 3 can be stabilized.

Next, although the insertion of the disk 3 is not hindered,
A mechanism capable of discriminating the insertion of the disc 2 from the insertion of the disc 3 and stabilizing the insertion will be described. On the lower surface side of the upper holder 24, a pair of disc guide C levers (guide members) 34 and disc guide D levers (guide members) 35 for discriminating between the discs 2 and 3 and the above-mentioned disc guide C levers 34 and disc guides. D lever 35
T-lever 38 that moves with the rotation of the disc, a disc guide portion (disc guide member) 39 that guides the disc 2 to a predetermined position, and the disc guide portion 39 and the disc 3 contact each other when the disc 3 is inserted. A guide portion moving member (guide portion retracting means) 40 for moving the disc guide portion 39 so as to avoid the above is provided.

With respect to the ideal movement of the disks 1, 2, and 3 in the directions of arrows AB, the center lines in the moving directions are substantially aligned. Each of the disc guide C lever 34 and the disc guide D lever 35 is formed in a substantially L-arm shape, and is provided so as to be line-symmetric with respect to the center line.

Further, the T-shaped lever 38, the disc guide portion 39, and the guide portion moving member 40 are all formed in a substantially line-symmetrical shape, and the center lines of symmetry at the standby positions thereof coincide with the center line. It is installed.

The disc guide C lever 34 and the disc guide D lever 35 are mounted on the support shafts 24a and 24b provided on the upper holder 24, and the base portions bent at substantially right angles are attached to the support shafts 24a and 24b. It is provided so as to be rotatable around 24b.

Further, the disc guide C lever 34 is rotated counterclockwise by a spring (not shown),
The lever 35 is always urged clockwise, and the stopper 36
Each rotation is regulated at 37 so that the symmetrical position in the standby state can be maintained.

At this time, the tip ends 34a1 and 35a1 of the arms 34a and 35a, which are the free ends of the levers 34 and 35 extending in the direction of arrow B, are substantially aligned with the insertion direction of the disks 1, 2, and 3 in the standby state. The parallel distances l3 are set to be slightly larger than the outer diameter of the disk 2, and guide the disk 2 in the direction of arrow AB.

The T-shaped lever 38 is formed of three arms, and the arm 38a extending in the direction of arrow C has a long hole 38d.
A long hole 38e is formed in the arm 38b extending in the arrow D direction,
The arm 38c extending in the direction is provided with a pin 38g standing upright with respect to the paper surface, and the base of each arm 38a, 38b, 38c is provided with a pin 38f vertically extending downward with respect to the paper surface.

The disk guide C lever 3 is provided in the long hole 38d.
4, the pin 34c of the disk guide D lever 35 is in the long hole 38e, and the pin 38f is in the upper holder 2
4 is inserted into a long hole 24c extending in the direction of arrow AB, and a pin 38g is inserted into a substantially V-shaped hole (blocking means) 40a of a guide portion moving member 40 described later.

The disc guide portion 39 is formed in a substantially horseshoe shape, and the bent pieces 3 are provided at both end portions which are end portions in the arrow B direction.
While 9a are hung vertically so as to face each other,
A pair of bending pieces 39c are vertically provided at the ends of the arrow A direction.

Further, since the facing distance of each of the bending pieces 39a is set so that l4 is slightly larger than the outer diameter of the disk 2, the inserted disk 2 can be guided to a predetermined position, and each of the above bendings can be bent. The disc 2 can be held in cooperation with the piece 39c.

In addition, the disc guide portion 39 is attached so as to be movable in the paper surface direction, and as shown in FIG.
As it advances in the direction of arrow A, the taper portion 39b inclined in the direction of arrow E causes the disk guide portion 39 to move evenly in the direction of arrow E.
It is installed in three places so that it can move in any direction.

As shown in FIG. 17, the guide portion moving member 40 is formed in a substantially U shape and has a pair of elongated holes 40d extending in the direction of arrow AB, and each elongated hole 40d has a corresponding elongated hole 40d. By inserting the pins 24d, 24d provided on the upper holder 24, the pins can be moved in the directions of arrows AB.

Further, the guide portion moving member 40 has a structure shown in FIG.
8, three taper portions 40b for moving the disk guide portion 39 are provided so as to face the respective taper portions 39b ...

Since each taper portion 40b is formed so as to incline in the arrow F direction as it advances in the arrow B direction, when the guide portion moving member 40 moves in the arrow A direction, the disc guide portion 39 is moved. When the guide portion moving member 40 moves in the arrow B direction after moving in the arrow E direction, the disc guide portion 39 moves in the arrow F direction.

Further, when the disc 3 is not mounted, the guide portion moving member 40 is located at the most position in the arrow A direction (this will be described in more detail later), so that the disc guide portion 39 is located in the arrow F direction. That is, each of the bent pieces 39a, 39a, 39c of the disc guide portion 39
The tip of 39c is in contact with the lower holder 25.

The guide portion moving member 40 is provided with a Z-shaped bent piece 40c extending in the arrow A direction along the center line at the end portion in the arrow A direction. As shown in FIG.
A doglegged hole 40a is formed at 0c.

The dog-legged hole 40a is provided for the pin 3 in the standby state.
4c is a circular arc-shaped first hole 40a1, a standby pin 35c is a circular arc-shaped second hole 40a2, and each of the holes 40a1 and 40a2 is in the middle of each of the holes 40a1 and 40a2 in the direction of arrow B. It is composed of a concave portion 40a3 which is slightly concave.

The mounting mechanism of the discs 2 and 3 is configured as described above. Next, the mounting operation of the discs 2 and 3 will be described. First, the mounting of the disc 3 will be described.

As shown in FIG. 19, the disc 3 is inserted from the disc temporary placement surfaces 23. As a matter of course, the disc 3 cannot be inserted from the disc temporary placement surface 22. The disc 3 moves in the direction of arrow A by the guides 16 provided on the upper holder 24 and the lower holder 25, particularly the guides 16 provided on the lower holder 25.

As a result, the disc 3 is prevented from being moved at a position deviated from the ideal insertion locus in the arrow C direction or the arrow D direction. When the disc 3 comes into contact with the respective tip portions 34a, 35a of the disc guide C lever 34 and the disc guide D lever 35, and further moves in the direction of arrow A, the disc guide C lever 34 moves clockwise and the disc guide D lever 35 moves. 35 rotates counterclockwise. The rotation angles of the both are substantially the same at any time point because the movement of the disk 3 does not deviate from the ideal trajectory.

Therefore, as the levers 34 and 35 rotate, the T-shaped lever 38 is prevented from rotating clockwise and counterclockwise, and moves in the direction of arrow B. As a result, the pin 3g of the T-shaped lever 38 is connected to the first and second holes 40a1.4 of the dog-legged hole 40a.
0a2 is not entered, but the recess 40a3 is fitted into the recess 40a3 and the recess 40a3 is pressed to move the guide portion moving member 40 in the arrow B direction.

With the movement of the guide portion moving member 40, the state shown in FIG. 18 (the state in which the disc 2 is inserted is shown, but when the disc 2 is omitted, it is the same as the state in which the disc 3 is not inserted. As shown in FIG. 20 from the state), each taper portion 40b ... Of the guide portion moving member 40,
By pushing up the taper portions 39b ... Of the disc guide portion 39, the disc guide portion 39 moves substantially in the direction of arrow E.

Such movement of the disc guide portion 39 does not prevent the space of the bent pieces 39a, 39a, 39c, 39c from being separated from the lower holder 25 at the tip end of the folding piece 39a, 39a, 39c, 39c. Is set to.

When the disc 3 is further moved in the direction of arrow A, the disc 3 moves from the disc guide C lever 34 in the direction of arrow D and from the disc guide D lever 35 in the direction of arrow C.
It moves while receiving a pressing force in the direction, that is, being biased toward the center position.

At this time, the movement of the disc 3 is prevented from being obstructed by the disc guide portion 39 as described above, and the movement of the disc 3 is brought into contact with the substantially circular arc-shaped disc stoppers 41 provided on the upper holder 24 and the lower holder 25. , The movement of the disk 3 is completed. The disc stopper 41 is continuous with the guides 16 ...

Next, each operation for closing the lid 12 from the state where the disc 3 is inserted will be described. As shown in FIGS. 20 to 23, a pair of disc hold releasing pins (separating means) 42a and 42b having a taper shape that narrows toward the tip end is formed on both sides of the front side (direction of arrow B) of the holder cover 18. Are mounted parallel to each other.

When the holder cover 18 is rotated with respect to the holder 13 and closed, the above-mentioned release pins 42a, 42b are released.
Contacts both the disk guide C lever 34 and the disk guide D lever 35 that sandwich the disk 3, and rotates the disk guide C lever 34 clockwise and the disk guide D lever 35 counterclockwise, The levers 34 and 35 are separated from the disc 3.

Next, the operation of the disc 3 inserted in the holder 13 to the reproducing state will be described. First, FIG.
When the rotating end of the holder cover 18 of the lid body 12 shown in is pushed downward, first, the holder cover 18 rotates in the closing direction with respect to the holder 13. Therefore, the biasing force that biases the holder cover 18 in the opening direction is set to be smaller than the biasing force that biases the holder cover 18 in the opening direction.

By the rotation of the holder cover 18 as described above, as shown in FIGS. 21 and 23, the disc hold releasing pins 42a and 42b move the respective disc guide C levers 34 and the disc guide D levers 3 as described above.
5 is separated from the disk 3. At this time, the disc retainer 33 presses the disc 3 as shown in FIG.
The unnecessary movement of the disc 3 is restricted.

Further, when the operator presses the lid 12 downward, the lid 12 rotates in the closing direction with respect to the main body 11, and the adapter 21 moves the disc 3 to the holder 13 as shown in FIG. Since it has not moved to the arrow A at the time of insertion, it is fitted into the turntable 32 and coupled. After this coupling, the disc 3 is fitted into the adapter 21.

At this time, the disk 3 is already pressed by the disk pressing 33, but the adapter 21
The taper portion moves to a regular position against the frictional force due to the pressing force of the disc retainer 33. By this movement, as shown in FIG. 21, the disc 3 is separated from the disc stopper 41.

By the above operation, as shown in FIG.
The disk 3 is sandwiched between the disk retainer 33 and the adapter 21, and when the adapter 21 rotates, the disk 3 rotates, and the rotation of the turntable 32 is transmitted to the disk 3 via the adapter 21.

At this time, the position of the disk 3 is held by the adapter 21, and the disk 3 is separated from the lower holder 25 due to the height relationship between the turntable 32 and the adapter 21. From the above, as shown in FIGS. 16 and 21, the disc guide C lever 34, the disc guide D lever 35, the disc stopper 41, and the lower holder 25 are separated from each other, and the disc 3 is in contact with the disc guide C lever 34. Only the retainer 33 and the adapter 21 become,
An abnormal load can be prevented when the disc 3 rotates, and the disc 3 can smoothly rotate.

Next, the mounting operation of the disc 2 will be described. First, the operator inserts the disc 2 into the holder 13 through the second opening 17 as shown in FIG. At this time, as described above, the first opening 14 and the second opening 1
Due to the dimensional relationship of 7, the disc 2 cannot be inserted through the first opening 14.

However, as shown in FIG. 6, the second opening 17 has a distance Q in the direction of arrow CD in the second opening 17.
Since 1 and Q4 are set according to the outer diameter of the disc 3, the disc 2 may be inserted with a center deviation from the above-mentioned center line as shown in FIG.

First, when the disc 2 is inserted without causing center deviation, as shown in FIGS. 17 and 18, the dimension between the tip portions 34a, 35a of the disc guide C lever 34 and the disc guide D lever 35. Depending on the setting
The levers 34 and 35 are designed so that neither lever 34 or 35 can rotate. Therefore, unlike the insertion of the disc 3, the levers 34 and 35 do not rotate at all,
The lever 38 does not move or rotate. As a result, the guide portion moving member 40 also does not move in the direction of arrow B, so the disc guide portion 39 does not move upward (direction of arrow E). Therefore, each bent piece 39a of the disc guide portion 39
-39a is in contact with the lower holder 25 and the disc 2
The disk 2 which is inserted and is conveyed in the direction of arrow A by the disk retracting mechanism described later.
Is a stopper 39c / 39c of the disc guide portion 39.
26, the movement of the disc 2 is completed as shown in FIG. Next, when the disc 2 is inserted with a center shift, as shown in FIG.
For example, when the disc 2 is inserted in the direction of the arrow C while being displaced from the center line, the disc guide C lever 34 comes into contact with the tip end portion 34a of the disc guide C lever 34 and is biased in the counterclockwise direction. Since it always urges the disc toward the center, the operator unconsciously disc 2
The disc 2 is inserted by turning the disc toward the center.

However, the operator may insert the disc 2 while maintaining the state biased in the direction of the arrow C against the biasing force. By such a biased insertion of the disc 2 in the direction of arrow C, the disc guide C lever 34 rotates clockwise and is separated from the stopper 36. At this time, since the disc guide D lever 35 not in contact with the disc 2 is biased in the clockwise direction, it does not rotate.

Therefore, the disc guide C lever 34
The T-shaped lever 38 does not move in the direction of arrow B with the rotation of, but the pin 35c of the disk guide C lever 34 does.
Rotate counterclockwise about. At this time, T
The pin 38g of the V-shaped lever 38 enters the second hole 40a2 of the dog-legged hole 40a, and therefore the T-shaped lever 38 does not move the guide portion moving member 40 in the arrow B direction. The disk guide member 39 is not moved in the upward arrow E direction.

Therefore, the disc 2 comes into contact with the tip of the bent piece 39a of the disc guide portion 39 on the arrow C direction side. Therefore, when the disc 2 is further moved in the direction of arrow A, in addition to the urging force from the disc guide C lever 34 in the direction of arrow D, the pushing force in the direction of arrow D from the contact point with the bending piece 39a. As a result, the disc 2 moves in the direction of the arrow D, and each bent piece 3 of the disc guide portion 39 is moved.
As shown in FIG. 26, it is moved by being guided by 9a until it comes into contact with the stoppers 39c, 39c.

In the above description, the case where the disc 2 is eccentrically inserted in the direction of the arrow C has been described, but the case where the disc 2 is eccentrically inserted in the direction of the arrow D is almost the same, and the disc guide D lever 35. Is rotated, and the T-shaped lever 38 is rotated clockwise, but the stoppers 39c and 39 are guided by the bent pieces 39a of the disc guide portion 39.
It is still moved until it comes into contact with c.

Next, the closing operation of the lid body 12 shown in FIG. 14 after the disc 2 is inserted in this way will be described. First, the holder cover 18 is closed with respect to the holder 13. At this time, the disc hold releasing pins 42a and 42b shown in FIG. 21 are in the standby state shown in FIG. It is set so as not to come into contact with 35 at all.

In addition to the states of the levers 34 and 35 as described above, the closing operation of the lid 12 is as shown in FIG.
A closing operation that is substantially the same as the closing operation of the lid 12 of the disk 3 described above is performed.

That is, when the holder cover 18 is closed, the disc retainer 33 pushes the disc 2 (disc 3 in the drawing), and when the operator pushes the lid 12 downward, as shown in FIG. The adapter 21 is joined to the turntable 32, and the center hole of the disc 2 fits into the adapter 21.
Is clamped by the disc retainer 33 and the adapter 21.

After the above procedure, the disc 2 is in the reproduction standby state. At this time, similarly to the disc 3 shown in FIG. 21, as shown in FIG. 26, the disc 2 separates from the stoppers 39c and 39c and also separates from the lower holder 25.

Next, the above-mentioned disc retracting mechanism for retracting the disc 3 inserted from the disc inserting portion 19 into the inner portion of the holder 13 will be described with reference to FIGS. 27 to 29.

As shown in FIGS. 27 and 28, the disc retracting mechanism conveys the inserted disc between the reproducible position and the eject position, and at least detects the position of the inserted disc. It is provided with two disk sensors and a roller driving member (motor and control circuit) for controlling the roller section. As the disc sensor, at least a sensor for detecting the insertion of each disc and a sensor for detecting the completion of the insertion of each disc are required.

In this embodiment, three disk sensors are provided in the holder 13, respectively. The start of the insertion of each disc and the displacement of the second roller described later are detected, and the inserted disc 1 and discs 2 and 3 are detected.
A first sensor (detection means, detection unit) 43 is provided as a sensor for detecting so as to discriminate between and near the disc insertion unit 19 in the holder 13. Further, a second sensor (detection means) 44 for detecting that the disks 2 and 3 have reached the insertion completion position is provided, and further, a third sensor 45 for detecting that the disks 3 have reached the insertion completion position is provided. Has been.

The second sensor 44 is an optical sensor, and includes a light emitting portion 44a such as a light emitting diode and a light receiving portion 44b such as a phototransistor, and the light emitting portion 44a is provided on the surface of the inserted disks 2.3. Irradiate light from.
Since a metal film is generally formed on the entire surface of each of the disks 2 and 3 by vacuum deposition or the like, the irradiation light is reflected by the disks 2 and 3 and is received by the light receiving portion 44b. By this, the presence of the disks 2 and 3 is detected.

The irradiation position of the second sensor 44 is such that when the disks 2.3 reach the insertion completion position,
If the center hole of No. 3 is set to the position, the second sensor 44 is set by determining that the time when the light receiving unit 44a is turned on and then turned off is the disc completion position. Is capable of detecting the insertion completion position of each of the disks 2 and 3.

The third sensor 45 is formed of a switch having a mechanical contact such as a leaf switch, and may be turned on when the disc 1 reaches the insertion completion position. Therefore, the discriminating between the disc 1 and the discs 2 and 3 is performed by the second sensor 44.
Can also be detected by the third sensor 45.

The reason why the two sensors 44 and 45 are used to detect the completion of the insertion of the disks 1, 2, and 3 is described below. The disk 1 has a disk main body 1c housed in a case. Since the case is usually made of synthetic resin, the sensor is very expensive because it receives the reflected light of the irradiation light. You will have to use one.

However, since the slider 1e made of metal is used for the disc 1 as shown in FIG. 10,
Although the slider 1e can be used as the irradiation position, the irradiation position for detecting the insertion completion position of the disks 2 and 3 described above is different, so that it is more cost effective to use two sensors. Therefore, as shown in FIG.
As the third sensor 45, an inexpensive leaf switch is used.

Next, the disk retracting mechanism will be described. As shown in FIGS. 27 and 28, a pair of roller parts 49 in the disk retracting mechanism for reciprocating the inserted disks 1, 2, and 3 with the holder 13 are provided at the ends of the upper holder 24 in the arrow B direction. There is.

First, on the top surface of the upper holder 24, a pair of projecting walls 24e, 24e are symmetrical with respect to the above-mentioned center line.
Are provided in parallel to each other, and each of the projecting walls 24e, 24e
Further, support shafts 46 extending substantially parallel to the top surface are attached so as to face each other.

On each of the support shafts 46, a substantially L-shaped rotating lever 47 is attached so that its bent portion is rotatable, and a first roller 48 is also rotatable. There is. The first rollers 48 rotate the rotation of a motor (not shown) through a deceleration transmission mechanism (not shown) in the clockwise direction when the disc is inserted and in the counterclockwise direction when the disc is ejected.

A support shaft 50 is attached to each of the first free ends 47a of the rotary levers 47 in the direction of arrow F so as to be substantially parallel to the top surface. A second roller (roller portion) 49 is rotatably attached to each of the support shafts 50 as a rotation shaft.

The second rollers 49, 49 are
The first rollers 48 are pressed against the corresponding first rollers 48, and the rotation of the first rollers 48 is transmitted to the second rollers 49.

As described later, the second rollers 49, 49 pull in the discs 1, 2, 3 in the direction of arrow A and eject the discs in the direction of arrow B. Even when the insertion of the discs is completed, it is necessary to press the discs 1, 2 and 3 in pressure to fix them.

Therefore, the rotary levers 47, 47 are
Each has a second free end portion 47b extending substantially in the direction of the arrow B, and a spring 51 is stretched between the second free end portions 47b and 47b and the top surface of the upper holder 24.

By these springs 51, 51, the respective rotation levers 47, 47 are urged in the clockwise direction (direction of arrow H), and the rotation is stopped at a predetermined position by a stopper (not shown). Has been done. Therefore, each of the second rollers 49, 49 can be displaced substantially in the arrow EF direction while rotating.

On the other hand, on the top surface of the holder cover 18, a pair of retracting release pins 52, 52 are erected upright, and when the holder cover 18 is closed, the release pin 52 is the second one.
By contacting the free end portion 47b and rotating the second roller 49 together with the rotation lever 47 in the counterclockwise direction (direction of arrow G) about the support shaft 46, whichever disk 1
Even if 3 is inserted in the holder 13, the second roller 49 is separated from the discs 1, 2 and 3.

The first sensor 43 is composed of a leaf switch (only the contacts are shown in the figure), and the contacts are closed when the disc is not inserted (this state is the OFF state of the first sensor 43). ) (See FIG. 29 (a)), conversely, when the discs 1, 2 and 3 are inserted and the second roller 49 rotates counterclockwise, the contact is opened (this state is detected by the first sensor 43). Is turned on).

Next, the operation of the above-mentioned disk retracting mechanism will be described. First, when inserting the disks 2 and 3, the operator inserts the disk 2 or 3 into the second opening 1
Plug in 7. As a result, the discs 2 and 3 enter between the second roller 49 and the lower holder 25. At this time, the second roller 49 moves the disc 2 or the disc 3
Is slightly rotated counterclockwise about the support shaft 46 (see FIG. 29B).

As the second roller 49 rotates, the first roller 49
The sensor 43 changes from the OFF state to the ON state, so that the motor (not shown) rotates and the first roller 48 rotates clockwise. As a result, the second roller 49, which is in pressure contact with the disc 2 or the disc 3, rotates counterclockwise around the support shaft 50, so that the disc 2 or the disc 3 moves toward the inner part of the holder 13 (in the direction of arrow A). ).

Further, the first sensor 43 is turned on, and the second sensor 44 also starts to operate.
a starts to irradiate the disks 2 and 3 with light. When the disks 2 and 3 enter the predetermined position, the light emitting section 44a
The irradiation light from is reflected by the disks 2 and 3 and is received by the light receiving portion 44b, and the second sensor 44 is turned on,
Furthermore, when the discs 2 and 3 enter and the insertion is completed,
As described above, the light receiving unit 44b stops receiving light and the second sensor 44 is turned off.

In this way, the light receiving section 44b is turned OFF → ON →
Disc 2 or disc 3 when switched off
It is judged that the insertion of is completed. At this time, if the second sensor 44 is simply in the ON state or in the OFF state, it is not judged that the insertion is completed. When the insertion of the disk 2 or the disk 3 is completed in this way, the rotation of the motor is stopped and the drawing of the disk 2 or the disk 3 by the second roller 49 is stopped.

When the lid 12 is closed from this state, the retracting release pin 52 provided on the holder cover 18 rotates the rotating lever 47 counterclockwise, so that the disc 2 or the disc 3 of the second roller 49 is rotated. The pressure contact with the above is released, and the trouble caused by the above pressure contact with respect to their driving is avoided.

Next, the operation for pulling in the disc 1 will be described. First, the operator inserts the disc 1 into the first opening 14. This allows the disc 1
Reaches the position of the second roller 49, and the disc 1 further enters between the second roller 49 and the lower holder 25.
The amount of rotation of the second roller 49 in the counterclockwise direction about the support shaft 46 at this time is larger than that when the disc 2 or the disc 3 is used (see FIG. 29C).

After that, similarly to each operation in the case of the disk 2 or the disk 3, the first sensor 43 is turned on, the disk 1 is pulled in by the second roller 49, and the operation of the second sensor 44 is started.

At this time, since the case of the disc 1 is made of synthetic resin, the irradiation light from the light emitting portion 44a of the second sensor 44 is not reflected, the light receiving portion 44b is not turned on, and the second light receiving portion 44b is not turned on.
The sensor 44 is never turned on. In addition, the second
As described above, the sensor 44 is set at a position where the irradiation light does not irradiate the slider of the moving disk 1.

Eventually, the disc 1 is read by the third sensor 45.
The third sensor 45 is turned on by pressing the leaf switch contact portion, which is, the motor for driving the second roller 49 is stopped, and the insertion of the disc 1 is completed.
When the lid 12 is closed in this state, the disc 2
As in the case of 3, the pull-in release pin 52 moves the rotation lever 47.
Is rotated to release the pressure contact of the second roller 49 with the disc 1 (see FIG. 29D).

Next, the pulling-out operation of each of the disks 1, 2 and 3 using the above-mentioned pulling-in mechanism, that is, the ejecting operation will be described. When the lock mechanism (not shown) is released from the reproduction standby state of the respective discs 1, 2 and 3, the lid 12 rotates in the direction of opening with respect to the main body 11, and further the holder cover 18 opens in the direction of opening with respect to the lid 12. Rotate to.

At this time, the pull-in release pin 52 is separated from the rotating lever 47, and the second roller 49 is pressed against the disc. Further, the motor for driving the second roller 49 rotates in the opposite direction when retracted, and the second roller 49 rotates in the clockwise direction (direction of arrow H) to move the disc in the direction of arrow B.

The amount of movement of the disc in the direction of arrow B is
It is set according to the size of the disc. This is
If the amount of movement is set to be the same for both discs, inconvenience occurs. That is, for example, when an appropriate movement amount is set for the disc 3, the movement amount of the disc 2 is too small, and it takes time for the operator to take out the disc 2 from the holder 13.

Next, the control mechanism for setting the above movement amount will be described. In the control mechanism shown in FIG. 30, the first sensor 43, the second sensor 44, the third sensor 45, and the drawer motor drive circuit 65 are connected to a control circuit (discriminating means, identifying means) 54 such as a microcomputer. . The drawer motor 53 is connected to the drawer motor drive circuit 65.

Further, the control circuit 54 has a memory 5 in which a program indicating a procedure of a predetermined process is stored in advance.
5, a time counter 56 for counting elapsed time, etc. is connected, a turntable drive circuit 61 for controlling the rotation of the turntable 32, and a pickup drive circuit for controlling a pickup 64 for reading a recording signal from each disk. 62 is connected.

Further, the control circuit 54 has a disc 1 signal processing circuit 58 for processing the reproduction signal of the disc 1 from the pickup 64, and a disc 2 for processing the reproduction signal of the disc 2 or the disc 3 from the pickup 64. , 3 signal processing circuit 59 is connected. The control signals from the signal processing circuits 58 and 59 are also output to the turntable drive circuit 61. Further, in the control mechanism, the reproduction signal from each of the signal processing circuits 58 and 59 is output to the signal output circuit 60. In the figure, the intersection of the intersected signal lines shows a non-connected state.

However, the above turntable drive circuit 6
In 1 and the pickup drive circuit 62, the correspondence may differ depending on the type of disc. Therefore, when the operator operates the play button, for example, if the user inputs in advance which disc is loaded, the switching time to the play mode can be shortened accordingly.

Next, with reference to FIG. 27, the control of the disc pulling operation and the disc ejecting operation will be described with reference to FIG.
It will be described based on. First, when the disc 2 or the disc 3 is inserted, as described above, the first sensor 43
Turns on. A signal indicating this ON state is sent to the control circuit 54.

The control circuit 54 operates the pull-out motor 53 via the pull-out motor drive circuit 65 (starts the pull-in operation of the disk), and at the same time, the second sensor 4
4 is also activated (irradiation of the light emitting unit 44a shown in FIG. 27 is started).

Further, when the disk 2 or disk 3 moves in the direction of arrow A, the light from the light emitting portion 44a is applied to the outer diameter end portion of the disk 2 or disk 3, and the reflected light is received by the light receiving portion 44b. . An ON signal indicating this light receiving state is sent to the control circuit 54, and the control circuit 54
Resets the time counter 56 and starts counting by the time counter 56.

When the disk 2 or the disk 3 eventually moves to a position where the irradiation light from the light emitting section 44a irradiates the center hole of the disk 2 or the disk 3, the light receiving section 44b stops receiving the reflected light, which indicates this state. O
The FF signal is sent to the control circuit 54.

At this time, the control circuit 54 judges that the insertion of the disk 2 or the disk 3 is completed because the signal from the second sensor 44 changes from the ON signal to the OFF signal, and the disk 2 or the disk 3 is drawn out through the drawing motor drive circuit 65. The driving of the motor 53 for driving is stopped and the counting of the time counter 56 is stopped.

The count value of the time counter 56 is sent to the control circuit 54, and based on the count value, the control circuit 54 determines whether the inserted disk is the disk 2 or the disk 3. , And stores the result in the memory 55. In this state, the disc 2 or the disc 3 is in the reproduction standby state.

Next, the disc determination in the control circuit 54 will be described. First, the light receiving portion 44b receives light from the outer peripheral portion of the disc reaching to the center hole of the disc. Therefore, if the moving speed of the disk is substantially constant, the count value increases as the value obtained by subtracting the diameter of the center hole from the outer diameter of the disk increases.

Therefore, the disc 2 and the disc 3 are
Since the center holes have the same diameter, the larger the outer diameter, the larger the count value. This makes it possible to accurately determine whether the disc is disc 2 or disc 3.

Next, when the disc 1 is inserted, the operation of the first sensor 43 and the second sensor 44 is the same in the circuit. When the case of the disk 1 reaches the position of the irradiation light from the second sensor 44, as described above, the light receiving portion 44b
Does not receive light, the time counter 56 does not operate.

When the third sensor 45 is turned on, a signal indicating that state is sent to the control circuit 54. As a result, the control circuit 54 determines that the insertion of the disc 1 is completed, stops the drive of the pulling motor 53, and determines that the inserted disc is the disc 1 (the third sensor 45 is in the ON state). This is when the disk 1 is completely inserted), and this data is stored in the memory 55.

As a result, the insertion of the disc 1 is completed, and the reproduction standby state is set. As described above, in the reproduction standby state, it is possible to determine which disc has been completely inserted, so that the reproduction standby state can be quickly changed to the reproduction state.

Next, the operation of pulling out the disk, that is, the ejecting operation will be described. First, the operator operates an eject key (not shown). As a result, the control circuit 5
4 reads the data (data indicating which disc is inserted) stored in the memory 55.

Based on this data, R in the control circuit 54
While the operating time data of the pull-out motor 53 at the time of disc ejection according to the type of the disc is read from the OM, the pull-out motor 53 is turned on and the time counter 56
Operate.

When the count time of the time counter 56 reaches the value corresponding to the operating time data, the control circuit 5
4 stops the rotation of the drawer motor 53. The operation time of the pull-out motor 53 is defined as the disc movement distance, which is the distance between the position where each disc is most easily taken out and the insertion completion position. Is set in consideration of the moving speed of. In this way, each disc is ejected to a position where the operator can take it out most easily.

As described above, in the configuration of the above-described embodiment, the adapter 21 is made to stand by at the position required for driving the discs 2 and 3, while the adapter 21 which becomes unnecessary when driving the disc 1 is closed by the lid 12. The discs 1, 2, and 3 can be driven because they can be moved to a position where they do not come into contact with the turntable 32 in the forming operation.

As a result, the above-mentioned structure is different from the conventional one in that the shape of the disk 1 and the diameter of the driving hole are different.
It is not necessary to provide a dedicated drive section for each of the two, and both can be driven by a single turntable 32, and the cost can be reduced by reducing the number of parts and the number of steps, and the size can be reduced.

Moreover, in the above configuration, since the adapter 21 is provided so as to be mechanically interlocked with the insertion of the disk 1, for example, the sensor of the insertion of the disk 1 and the adapter which uses the signal from the sensor as a trigger. It is not necessary to specially provide the moving mechanism 21 and simplification can be achieved.

In addition, the above-described structure has the first opening 14 and the second opening 14.
Since it is formed so as to have the common portion with the opening 17 of
Space saving can be achieved as compared with the case where the first opening 14 and the second opening 17 are individually formed.

Furthermore, the above-mentioned configuration is applied to each of the disks 1, 2, ...
When 3 is inserted into the holder 13, a portion common to those insertion paths is provided. If a completely separate path is provided for each, a sensor is required for each of the start of insertion and the completion of insertion of each disk 1, 2 and 3, so a total of 6 sensors are required.

However, the above-mentioned configuration is for the disc 1
Since a common portion is provided for the two and three insertion paths, the same operation can be performed by the three sensors 43, 44, and 45, and the structure can be simplified.

Further, in the above structure, since the disc guide C lever 34, the disc guide D lever 35 and the disc guide portion 39 are provided, the disc 2 can be stably and reliably inserted into the holder 13 at a predetermined position.

Moreover, when the disc 3 is inserted, the levers 34 and 35 are displaced by abutting the inserted disc 3 by utilizing the fact that the disc 3 has a larger outer diameter than the disc 2. Thus, the guide portion moving member 40 is provided for displacing the disc guide portion 39 to a position that does not hinder the entry of the disc 3 by the displacement.
Therefore, obstruction of the insertion of the disc 3 is avoided.

As described above, the above structure can be stabilized both when the disc 2 is inserted and when the disc 3 is inserted.

In addition, since the above-described structure is provided with the dog-legged hole 40a, when both the levers 34 and 35 are displaced,
By moving the guide part moving member 40, one lever 34
When only 35 is displaced, the guide portion moving member 40 is not moved.

As a result, when the disc 3 is inserted, the disc guide portion 39 is prevented from obstructing the insertion of the disc 3 as described above, and the disc 2 is inserted eccentrically, and the one lever 34, 35 is inserted. When only the disc is displaced, the transmission of the movement of the displacement of the levers 34 and 35 to the disc guide portion 39 can be interrupted.
Therefore, it is possible to guide the disc 2 which is biasedly inserted together with one of the levers 34 and 35 in which the disc guide portion 39 is displaced to a predetermined position.

Therefore, with the above structure, it is possible to surely insert the disc 2 evenly inserted into the insertion completion position.

Further, in the above configuration, since the disc hold releasing pins 42a and 42b are provided, when the holder 13 holding the inserted disc 3 at the predetermined position is moved from the attaching / detaching position to the driving position, the disc guide C lever 34 is provided.
Further, since the state of being sandwiched by the disc guide D lever 35 can be released, the load on the rotation of the disc 3 at the drive position can be reduced. Therefore, the rotation of the disk 3 can be made smoother.

By the way, when the slider 1e is provided like the disc 1, the slider is generally opened by the time the insertion is completed. This is because it is difficult to open the slider during the playback drive state after the insertion is completed.

The following mechanism is known as such a slider opening / closing mechanism. First, a substantially L-shaped lever is rotatably provided around its center, and when the disc 1 is inserted, the lever rotates with its first pivot end abutting the disc 1. As a result, the second rotating end of the lever is fitted into the slider moving recess of the disc 1, and the contact between the first rotating end and the disc 1 is released.

As a result, the disc 1 can further enter, and the slider in contact with the second rotating end can be opened. Therefore, in such a mechanism, it is necessary to provide it beside the path of the disc 1.

However, if the above-mentioned mechanism is provided, it becomes impossible to insert the discs 2 and 3 larger than the disc 1, and it becomes impossible to realize a device that drives and reproduces the discs 1 and 2 and 3 in a compatible manner. On the other hand, if it is attempted to realize the slide opening / closing mechanism instead of the mechanical mechanism as described above, the insertion start detecting means of the disc 1 and the electric moving means of the slide opening / closing lever, that is, the discs 2 and 3 will be described.
It is necessary to provide means for retracting the slide opening / closing lever when inserting the.

However, in the construction of this embodiment, the slide opening / closing lever 31 is set to the disk 2/3 in the standby state.
The slider 1e at a position where insertion of the slider is not hindered.
The discs can be opened and closed, and the discs 1, 2, and 3 can be driven to be reproduced, respectively, which can be simplified.

Further, in the above construction, since the rotating second roller 49 is provided so as to be displaceable in the direction of the arrow EF, the discs 1 and 2 having different thicknesses can be formed by the simple conveying means.
・ 3 can be transported respectively.

Further, the above-mentioned structure is the same as the second roller 4 described above.
Since the first sensor 43 for detecting the displacement of 9 is provided, the single first sensor 43 can identify the start of the insertion of the discs 1, 2 and 3 and the disc 1 and the discs 2 and 3. Therefore, it can be simplified.

In addition, the above-mentioned configuration is such that the sensors 43 and 44 are
By 45, the inserted disc is discriminated when the insertion is completed, and the disc ejection state is controlled based on the discriminated data, so that an appropriate ejection position can be set and operability is improved. Can be improved.

In addition, the above-mentioned configuration is the second sensor 44.
By detecting from the outer periphery of the discs 2 and 3 to their center holes, the completion of their insertion is detected.
The discs 2 and 3 can be discriminated by detecting a difference in detection time due to a difference in outer diameter of the discs 3. As a result, in the above configuration, it is not necessary to separately provide a size determining means for the disks 2 and 3, and it is possible to reduce the cost.

[0200]

As described above, the disk drive device of the present invention is provided with a pair of guide members and a disk guide portion for guiding the S disk as a recording medium that is rotationally driven, and has an outer diameter larger than that of the S disk. When a large L disc is inserted, the disc guide section
The guide portion retracting means for moving the disc to a position that does not hinder the insertion of the disc is provided.

Therefore, the above construction has an effect that both the S disc and the L disc can be inserted stably and reliably.

Further, the disk drive device of the present invention is further arranged such that the holding means can be moved between the attachment / detachment position and the drive position .

[0203] Thus, the above configuration makes it possible to separate the position to insert the position for driving the disc.

Further, the disk drive device of the present invention further includes the guide members displaced by abutting against the L disk inserted in the holding means at the mounting / removing positions.
A separating means is provided for displacing the guide member in a direction of separating from the L disc.

Therefore, the above-mentioned structure is further provided in the attachment / detachment position.
Driving after the contact of the L disk and the guide member is released by
Since it moves to the moving position, the load on the rotation of the L disk can be reduced, and the rotation of the L disk can be smoothed.

[Brief description of drawings]

FIG. 1 is a side view of a main part of a disk drive device according to the present invention.

FIG. 2 is an exploded perspective view of a disk used in the disk drive device.

FIG. 3 is a perspective view of another disk used in the disk drive device.

FIG. 4 is a perspective view of the disk drive device.

FIG. 5 is a side view showing a first opening and a second opening when a disc is inserted into the disc drive device.

FIG. 6 is a side view showing a first opening and a second opening when another disk is inserted into the disk drive device.

FIG. 7 is a plan view of an essential part of the disk drive device.

FIG. 8 is a plan view of a principal portion showing an operation example when a disc is inserted into the disc drive device.

FIG. 9 is a side view of essential parts showing an operation example when a disc is inserted into the disc drive device.

FIG. 10 is a plan view of essential parts showing an operation example in which a disc is inserted into the disc drive device, and further, the bent piece of the adapter slider and the disc are released from contact with each other.

FIG. 11 is a side view of the main parts showing the main part of the disk drive device with the cover closed.

FIG. 12 is an explanatory diagram showing contact between the adapter slider and the tapered protrusion.

FIG. 13 is an explanatory view showing the movement of the adapter slider by the tapered protrusion.

FIG. 14 is a side view of an essential part in a state where another disc is inserted into the disc drive device and the lid body is opened.

FIG. 15 is a plan view of an essential part of the disk drive device in the above state.

FIG. 16 is a side view of an essential part in a state where another disk is inserted into the disk drive device and the lid body is opened.

FIG. 17 is a plan view of an essential part of the disk drive device.

FIG. 18 is a schematic side view of a disc guide portion and a guide portion moving member of the disc drive device.

FIG. 19 is a main-portion plan view showing a state where another disk is inserted into the disk drive device.

FIG. 20 is a side view of an essential part in a state where another disc is inserted into the disc drive device and the lid body is opened.

FIG. 21 is a plan view of relevant parts showing the disc hold release levers of the disc drive device.

FIG. 22 is a front view of the main part with another disc inserted into the disc drive device and the lid body opened.

FIG. 23 is a front view of the main part where another disc is inserted into the disc drive device and the lid is closed.

FIG. 24 is a side view of the main part in the above state.

FIG. 25 is a plan view of an essential part when another disk of the disk drive device is biasedly inserted.

FIG. 26 is a plan view of an essential part when another disk of the disk drive device is normally inserted.

FIG. 27 is a side view of the essential parts showing the retracting mechanism of the disk drive device.

FIG. 28 is a front view of the main part of the retracting mechanism.

FIG. 29 is a side view of a main portion showing each operation of the retracting mechanism.

FIG. 30 is a block diagram for controlling the disk drive device.

[Explanation of symbols]

2 S disc 3 L disc 13 holder 32 turntable 34 Disc guide C lever 35 Disc guide D lever 39 Disc guide section 40 Guide moving member

─────────────────────────────────────────────────── ─── Continuation of front page (72) Hideo Yoshida 22-22 Nagaike-cho, Abeno-ku, Osaka-shi, Osaka Prefecture Sharp Corporation (56) References JP-A-56-114170 (JP, A) (58) Field (Int.Cl. ⁷ , DB name) G11B 17/04

Claims (3)

(57) [Claims] 1. A drive means for driving an S disk as a rotationally driven recording medium, and an L disk having an outer diameter larger than that of the S disk and being a rotationally driven recording medium, and the S disk. Alternatively, a holding means into which the L disc is inserted is provided, and the holding means is movably provided with a disc guide member for guiding the holding position of the S disc and the driving means at the driving position. together with that, the inserted S
A pair of guide members for guiding the disc to the disc guide member are provided so as to be opposed to each other so as to maintain a space corresponding to the outer diameter of the S disc, and the respective guide members are pressed in directions away from each other. Then, it is displaced and is urged in the restoring direction, and when one of the guide members is pressed and displaced, a blocking means for blocking transmission to the disc guide member due to the displacement of the guide member is provided. When the L disc is inserted into the holding means and each of the guide members is displaced, the guide portion retracting means for moving the disc guide member to a position that avoids obstruction of the insertion of the L disc by the displacement of each of the guide members. A disk drive device comprising: 2. The disk drive device according to claim 1, wherein the holding means is between a drive position for connecting the S disk and the L disk to the drive means and a mounting position for mounting and dismounting the S disk and the L disk. A disk drive device, wherein the disk drive device is provided so as to move. 3. The disk drive device according to claim 2, wherein the guide members are abutted and displaced with respect to the L disk inserted into the holding means, and the guide members are attached to the L disk at the attachment / detachment position. The disk drive device is provided with a separating means for displacing in a direction away from the disk drive.