JP2003151195A - Disk drive unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a diameter of a disk from being erroneously recognized smaller even if a disk with a transparent part partially included in the disk is inserted by discriminating disks with a large diameter and a small diameter without using an optical sensor. SOLUTION: A disk drive device is provided with a transporting means for transporting disks with 12 cm and 8 cm in diameter horizontally in the diameter direction of the disks, a stopper for a disk with 8 cm in diameter for stopping the transportation of a disk with 8 cm in diameter by abutting on the disk and for accepting the transportation of a disk with 12 cm in diameter by turning, a stopper for a disk with 12 cm in diameter for stopping the transportation of the disk with 12 cm in diameter accepted by the stopper for a disk with 8 cm in diameter at a stop position concentric with the disk with 8 cm in diameter, a detection switch for a disk with 8 cm in diameter, and a switch operating part for switching on the detection switch for a disk with 8 cm in diameter when the disk with 8 cm in a diameter is stopped at the concentric stop position and preventing the detection switch for a disk with 8 cm in diameter from being switched on in such a manner that the stopper for a disk with 8 cm in diameter is turned by the transportation of the disk with 12 cm in a diameter.

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a large-diameter and small-diameter
Disk drive that automatically identifies the disk
You. 2. Description of the Related Art CD (Compact Disk)
There are two types, 8 cm and 12 cm in diameter.
Therefore, this difference in mass does not adversely affect sound quality.
In order to achieve this, the spindle
Set the gain of the servo to the optimum value for each disc diameter.
Need to be specified. An 8 cm diameter CD required for this purpose
(Hereinafter referred to as 8 cm CD) or CD with a diameter of 12 cm
(Hereinafter referred to as 12 cm CD) is disclosed in
It is described as a conventional technique in JP-A-128877.
As described above, normally, the light from the light emitting element is received by the CD by the light receiving element.
Light that outputs whether or not it was able to receive light without being interrupted
Was done by sensors. In this case, FIG.
As shown in FIG. 44 and FIG. 44 (right side view), the first optical sensor
From the light-emitting element when the 8cm CD is mounted in the playing position
Light can be received by the light receiving element and a 12 cm disc is mounted.
When wearing, the light receiving element can receive light from the light emitting element.
Not located Also, the second optical sensor is 8 cm
Light emitting element when CD or 12cmCD is mounted
From the light receiving element cannot be received by the light receiving element.
As a result, the light receiving elements of the first and second optical sensors can emit light.
12cmCD when the light from the child cannot be received together
And the light receiving element of the first optical sensor is
Light cannot be received and the light receiving element of the second optical sensor is a light emitting element.
When the light from the camera can be received, it is determined to be 8 cmCD. Further, the rotation of the motor for transporting the CD is stopped.
Must be detected to stop the CD transport.
In other words, this also used an optical sensor. [0005] However, the information
The recording area is the same area as the 8 cm diameter disc, and the outer shape is 1
2 cm disc (Japanese Patent Laid-Open No. 11-25508)
See here, this disc is a new maxi single
Discs) have become commercially available. This news
-Maximum single disc radius 8cm to radius 12c
The area of m is transparent or printed.
I have. If it is transparent, it will be mistakenly recognized as 8cm in outer shape
There is a problem, and the rotation of the motor that transports the disc
There is a problem that it stops quickly. A disk drive according to the present invention is provided.
In consideration of this point, the probe device has a diameter of 12c.
m, 8cm disc is transported horizontally in the radial direction of the disc
Transfer means and the transfer of an 8 cm disc by contact.
Stop and transfer of 12cm disc is allowed by rotation
8cm stopper and 8cm stopper
The transport of a 12 cm disc that has been
12cm stopper to stop at cardiac arrest position and 8cm
Detection switch and 8cm disk are in the concentric stop position
Turn the 8cm detection switch ON when stopped
Switch the 8cm stopper for 12cm disc
Detected for 8cm by rotating by transport
Switch work to prevent switch from turning on
It has a moving part. An embodiment of the present invention will be described with reference to the drawings.
I will tell. The apparatus of this embodiment is an 8 cm CD (Compact).
Disk) and 12cm CD, MD (Mini D)
isk) can also be played with a common head
This is an Osize (German standard) playback device. Figure 1 shows the implementation
FIG. 4 is a block diagram of an example. The disk drive device of the present embodiment
The mechanism is a mechanism (1) and a control circuit for controlling the mechanism (1).
(2) and an operation program of the control circuit (2) are stored.
Information necessary for the operation of the ROM (3) and the control circuit (2)
And a RAM (4) for storing. FIG. 2 is a plan view showing the structure of the mechanism (1).
FIG. 3 is a front view, and FIG. 4 is a right side view.
You. FIG. 5 is a plan view showing the insertion position of the disc.
6 is this right side view, and FIG. 7 is this left side view. FIG. 8 is a front view showing a driving unit (14) for a roller.
FIG. 9 is a left side view thereof. Fig. 10 is low
It is a partial left side view which shows the holding | maintenance method of the left of La. FIG. 11 shows a rear switch for the MD.
It is a side view. FIG. 12 shows the first state of the MD pull-in.
FIG. FIG. 13 shows the second state of the MD pull-in.
FIG. 14 is a left side view of FIG.
5 is a partially enlarged view of a main part of FIG. FIG. 16 shows a third state of the MD pull-in.
FIG. 17 is a plan view, FIG. 17 is a left side view, and FIG.
It is the elements on larger scale of the principal part of FIG. Fig. 19 is MD pull-in
FIG. 20 is a plan view showing the finished state of FIG.
FIG. 21 is a left side view of FIG. Figure 22 shows the MD
It is a left view which shows a clamped state. FIG.
It is a left view which shows a projection state. FIG. 24 shows a first state of the loading of the CD.
It is a top view. FIG. 25 shows the second state of the CD pull-in.
FIG. FIG. 26 is the third drawing of the 8 cm CD.
FIG. 27 is a plan view showing the state of FIG.
FIG. FIG. 28 shows the end state of 8 cm CD pull-in.
FIG. 29 is a detailed view of a main part of FIG. 28.
You. FIG. 30 shows a third state of 12 cm CD pull-in.
FIG. 31 is a plan view, and FIG. 31 is a detailed view of a main part of FIG.
FIG. 32 is a plan view showing a fourth state of pulling in a 12 cm CD.
FIG. 33 is a detailed view of a main part of FIG. 32. FIG.
4 is a plan view showing the end state of the pulling in of the 12 cm CD.
FIG. 35 is a detailed view of the main part of FIG. FIG. 36 shows C
It is a top view which shows the movement of the turntable for D. FIG.
FIG. 7 is a plan view showing a slide mechanism of the slide plate. Figure
38 is a right side view showing a clamp state of a 12 cm CD.
You. FIG. 39 is a plan view showing a CD ejection state. FIG.
0 indicates the reason for the movement of the CD turntable (72).
FIG. As shown in FIG. 1, the mechanism (1) is an MD or a CD.
Loading / unloading part (1
0) and the loaded MD and CD each turn
The table (71 in FIG. 5) (72 in FIG. 5)
Ramp (40) and sound from clamped MD or CD
And a reproducing unit (70) for reading information such as sound. First, the loading is shown in FIG.
As shown, the MD is located on the lower side of roller (11) and roller (11).
The CD is inserted between the MD trays (12) to be arranged,
Roller (11) and C disposed above roller (11)
It is inserted between the D guides (13). Thus, M
The roller (11), which is also used for loading D and CD,
A metal shaft (111) and a circle around the shaft (111)
It consists of a cylindrical rubber part (112). As shown in FIGS.
The diameter of the center of the rubber part (112) is thinner than both ends.
Has become. This makes it easy to insert a disk-shaped CD
Can be applied to both ends of the CD by applying a conveying force.
A fixed transfer can be performed. As shown in FIGS. 5 to 8, the roller (11)
Roller holding fitting (14) by roller holding fitting (14)
Is held rotatably about the shaft hole (14a). Soshi
Then, as shown in FIGS.
(15L) (1)
5R), the roller (11) is urged upward.
As shown in FIG. 6, the shaft engages with the shaft (111) of the roller (11).
Link (442) rotates around the shaft hole (442a)
The shaft is supported as possible, and the spring (15L) (15R)
6, it is biased in a counterclockwise direction. This link (44
The counterclockwise rotation of 2) is provided on the link (442).
As shown in FIG. 4, the slide shaft (4421)
(441) is located above the roller lifting hole (441a).
By contact, it is blocked. This allows the
The position of the biased roller (11) is maintained. In FIG.
As shown, the hole (441a) of the slide plate (441) is
Slightly larger than the shaft (4421) of the link (442).
As a result, the roller (11) is
(14) It is rotatable downward against the bias of (15).
You. Before the CD is inserted, the center of the roller (11) and C
The gap of the D guide (13) is 0.5 mm,
The gap between the end of (11) and the CD guide (13) is 0 mm
is there. Therefore, a CD having a thickness of 1.2 mm is applied to the roller (1).
By rotating 1) downward, the roller (11) and
Enter between the CD guides (13). A roller into which the roller (11) is fitted;
Left and right shaft holes (14b) (14c) of holding bracket (14)
Is circular on the right (14c), but is shown in FIGS.
As you can see, the left side (14b) has the shaft hole (13a) at the center of the arc.
It is an arc-shaped slot. And the roller (1
The left side of 1) is urged downward by the holding spring (16).
It is. As a result, the roller (11) has the right side as a fulcrum.
And the left can rotate upward against the holding spring (18)
It is. Roller (11) and MD tray before MD is inserted
The gap of ray (11) is about 3.5 mm. Therefore,
4.5mm thick MD, left side of roller (11) is upward
By rotating the roller (11) and the MD tray
Enter during (11). As shown in FIGS. 5, 8, and 9, the roller (11)
Is turned clockwise when viewed from the right side by the roller drive unit (17).
Turn or rotate left. Here, clockwise rotation is low
Pull the CD inserted into the upper part of the device (11) into the device
It is the direction of rotation, and the left rotation is inserted under the roller (11).
This is the rotation direction in which the inserted MD is drawn into the apparatus. Low
The drive unit (17) for the motor is a motor (171) and a motor
A gear unit (172) for transmitting the rotation of (171), and a gear
Belt for transmitting the rotation of the section (172) to the roller (11)
(173). As shown in FIG.
The final gear of the gear portion (172) to be rotated is the rotation of the roller (11).
Shaft hole (14a) of roller holding bracket (14), which is a pivot point
And concentric. For this purpose, the roller (11)
Even if it moves, the tension of the belt (173) does not change,
The rotation of the gear (172) is transmitted to the roller (11).
be able to. As shown in FIG. 5 to FIG.
The D tray (12) has a shaft (121) provided on its left side.
Is in the left shaft hole (14d) of the roller holding bracket (14).
A shaft (122) provided on the right side is a roller holding bracket (1).
4) is fitted into the right shaft hole (14e). This
The MD tray (12) is held to the left of the roller (11).
Roller holding bracket (14) together with the roller (11)
About the shaft hole (14a). As shown in FIG. 5 and FIG.
The switch (18) is at the front of the MD insertion part,
A switch (19) is provided at the rear of the MD insertion section. Figure
As shown in FIGS.
-(20) (21), switch from OFF to ON,
As shown in FIG. 1, this signal is output to the control circuit (2).
You. The front switch (18), as shown in FIG.
Arranged at the position where D turns ON before reaching the roller (11)
And, as shown in FIG.
Center of MD turntable (71) of playback unit (70)
, That is, the MD is finished loading
When it is in the position, the front switch (1
8) is provided. The rear switch (19) is a roller
(11) It is arranged at the rear part, and as shown in FIG.
ON at a position suitable for the user to take out the MD when ejecting
It is arranged at a position where it is switched from to OFF. As shown in FIG. 5, a front optical sensor for a CD
(22) is the front light of the roller (11) and the rear light for the CD.
A sensor (23) is arranged behind the roller (11).
As shown in FIG. 43, each of the light emitting element emitting light and the light emitting element
And a light receiving element for receiving light from the child. Light emitting element
The light receiving element is disposed below the CD and the light receiving element is disposed above the CD.
It is. Then, as shown in FIG. 1, each optical sensor (2
2) (23) The light receiving element can receive light from the light emitting element
Is output to the control circuit (2). Here, CD
Light receiving element without blocking light from the light emitting element
The condition in which light is received by the
The light from the light emitting element is blocked
The state in which the optical sensor is off is called ON. Front light sensor (2
In 2), the CD reaches the roller (11) as shown in FIG.
It is arranged at a position that is turned ON before the operation. Rear light sensor
(23) shows the case when the user ejects the CD as shown in FIG.
Switches from ON to OFF at a position suitable for taking out a CD.
It is arranged at a position where it can be replaced. As shown in FIG. 24, a mounting bracket for a stopper
A pair of left and right 12 cm stoppers (3
1L) and (31R) are the shaft holes (31La) and (31Ra).
Is supported so as to be rotatable around the center. 12cm for left side
The right hole (31Lb) provided in the topper (31L)
Protrusion provided on the stopper (31R) for one of the 12cm
(31Rb) is engaged, as shown in FIGS.
And the rotation is linked. In other words, one 12cm storage
When the par (31L) (31R) is about to rotate, the other
Of the 12cm stoppers (31R) and (31L)
When locked, one of the stoppers for 12 cm (31
L) (31R) does not rotate, and the other 12cm
When the rotation of the par (31R) (31L) is allowed,
12cm stoppers (31R) and (31L) also rotate
You. Stopper for left and right 12cm (31L)
(31R) has stoppers (32L) (3
2R) rotates around the shaft holes (32La) and (32Ra).
It is movably supported. And one end is left and right 12c
m for stopper (31L) (31R), the other end is 8cm
Stopper (32L) (32R)
For 8cm on the left by spring (33L) (33R) for PA
Stopper (32L) is for counterclockwise, 8cm on the right
Of the stopper (32R) is urged clockwise by a rotational force.
You. With this urging force, a stopper (32L) for 8cm
(32R) (32Lb) (32L)
Rb) is provided on the mounting bracket (30) for the stopper.
Notches (30aL) and (30aR)
It is. 12cm stopper when locked
The rotation of (31L) and (31R) is prevented. 8cm stopper (32L) (32R)
Locks when rotates against springs (33L) and (33R)
Is released and 12cm stopper (31L) (31R)
Becomes rotatable. As shown in FIGS.
cm stopper (32L) is to the left of the shaft hole (32La)
With a protrusion (32Lc) on the right side for 8cm
(32R) is a protrusion (32R) to the right of the shaft hole (32Ra).
c). These projections (32Lc) (32Rc)
Extends forward and has a length as shown in FIGS.
30 and 31 without contacting the conveyed 8 cm CD.
As shown in the figure, the length should be in contact with the conveyed 12 cm CD.
Has become. Thus, even if an 8 cm CD is transported,
cm stoppers (32L) and (32R) do not rotate.
The lock was not released and the 12cm CD was transported.
8cm stoppers (32L) and (32R) rotate
The lock is released and the stopper for 12 cm rotates. In the left stopper (31L) for 12cm
The lever (34) for the 8cm switch has its shaft hole (34).
It is rotatably supported about a). One end on the left 12
cm stopper (31L), the other end is 8cm switch
Switch spring (3) locked to the lever (34)
According to 5), the lever (34) for the 8cm switch is clockwise.
The rotational force is urged in the direction. This rotation is mounting for stopper
It is blocked by the protrusion (30b) provided on the metal fitting (30).
You. The urging force of the switch spring (35) is 8 cm.
Via the lever (34) for the switch, for the left 12cm
The stopper (31L) counterclockwise to the right 12cm
Force for rotating the stopper (31R) clockwise.
You. 8c at one end of lever (34) for 8cm switch
an abutting portion (34b) with which the m disk abuts;
Pressing part for pressing switch (36) for 8cm on the end side
(34c) is provided. As shown in FIGS. 24 and 34, the left 12 cm
The stopper (31L) has been rotated to a predetermined position.
To switch from OFF to ON.
A switch (37) is provided. In this apparatus, the MD and the CD are shared.
Playback of 1DIN audio size that can be read by
Device. For this reason, as shown in FIG.
Turntable (71) and turntable for CD (7
During the period 2), a predetermined dimension L1 in which the head (73) can move.
(About 73 mm). Then,
The width of the area occupied by the clamped MD and CD is
It must be greater than or equal to modulus L2 (about 167 mm). one
, 1DIN audio size (width 178mm x height 5
0mm), the width of the MD and CD insertion slot is
Must be less than or equal to the fixed dimension L3 (about 127 mm)
No. Here, L2> L3, and L2 is inserted between MD and CD.
It cannot be the width of the entrance. To this end, FIG.
As shown, during playback in CD mode, the turntable
(71) The reproducing unit (7) including the (72) and the head (73)
0) is rotated counterclockwise about the shaft hole (74).
Clamping is performed later, and the playback unit is used during playback in MD mode.
Clamping is performed without rotating (70). The rotation of the reproducing section (70) and the movement of the clamp
Since the work is not a main part of the present invention, the description is simplified.
The rotation of the reproducing section (70) is performed by the clamp section (40).
Done. The clamp part (40) is connected to the control circuit (2).
A motor (41) whose rotation is controlled more, and a motor (4)
The gear portion (4) transmitting the rotational force of (1) to the drum (431)
2) and a predetermined timing including the drum (431)
To rotate the playback unit (70) or slide plate (44).
1) a variable section (43) for sliding, and the sliding section;
Crank with plate (441) for clamping MD and CD
A mechanism (44). As shown in FIG. 36, the drum (431) is
A part of a circumferential groove (431) extending toward the center
a) when the drum (431) rotates in a predetermined range.
The shaft (4321) in the groove (431a) is oriented toward the center.
Into the extending part. At this time, the shaft (432) is held.
Link (432) rotates about the shaft hole (432a).
You. This link (432) is re-connected via the spring (433).
The raw part (70) is rotated. Further, as shown in FIG.
1) is provided with a spiral groove (431b) in the lower part,
When (431) rotates, the shaft (4) in the groove (431b)
341) enters a portion extending toward the center. This and
The link (434) holding the shaft (4341) is a shaft hole.
(434a). This link (434)
Is rotated, the shaft (43) fixed to the link (434) is rotated.
The slide plate (441) engaged with (42) slides.
You. As shown in FIG. 4, a roller is provided on the slide plate (441).
Into which the shaft (4421) of the link (442) is fitted
Raising and lowering holes (441a) for the rack and mounting brackets for the stopper
(30) Ascension for pressing the disc into which the shaft (301) is fitted
The lower hole (441b) and the disk cover mounting bracket (44)
The two shafts (4) for the disc cover abutting on the slope of (3)
41c) and (441d). Installing the disc cover
The bracket (443) is rotatable around the shaft hole (443a).
Be pivoted. This mounting bracket (443) is a disc cover
(Not shown) to which the mounting bracket is attached.
Disk cover is inserted by rotation of (443)
Open and close the mouth. Also, as shown in FIG.
The mounting bracket (30) can rotate around the shaft hole (30c).
It is pivotally supported, and a disk pressing portion (444) is provided in front.
You. With this configuration, the slide plate (441) slides
Then, the shaft (4421) for the roller is inserted into the shaft hole (442a).
And the roller (11) moves up and down around
The shaft (301) of (30) rotates around the shaft hole (30c).
The disk pressing part (444) moves up and down,
Two axes (441c) and (441d) move forward and backward
By doing so, the mounting bracket (443) for the disc cover
Rotate around the shaft hole (443a) to open the disc insertion port
Closing is performed. The rotation of the reproducing section (70) and the clamp
In operation, in the MD mode, the control circuit (2)
As a result, the drum (431) of the fluctuation unit (43) is moved to the initial position.
Is rotated counterclockwise when viewed from the top view. Then
The sliding portion (441) is moved backward by the moving portion (43).
Ride and MD by the crank mechanism (44)
Ramped. And the drum (431) is
When rotated clockwise from the position, the clamp is released.
You. In the CD mode, under the control of the control circuit (2).
The drum (431) is rotated clockwise from the initial position.
It is. Then, the reproducing unit (70) moves the position of FIG.
Is turned clockwise to the position of the clamp mechanism (4).
4) The slide plate (441) is slid forward,
The CD is clamped. Then, the drum (431) is
When rotated counterclockwise from the ramp position, the clamp
Is released, and then the reproducing unit (70) rotates counterclockwise.
It is moved and returned to the initial position. Next, the operation of the control circuit (2) will be described.
41 and 42 are flow charts showing main operations of the control circuit (2).
It is a chart. In FIG. 41, MD and CD are inserted.
There is no initial state, the front and rear switches for MD (18)
(19) and 8cm and 12cm switches for CD
(36) and (37) and the front and rear optical sensors (2
2) All of (23) are OFF (S1). this
In the initial state, the control circuit (2) is a front switch for MD.
Whether or not (18) is turned on (S2), the front of the CD
It is monitored whether or not the optical sensor is turned on (S21).
You. As shown in FIG. 11, the MD is changed by the user.
Insert between roller (11) and MD tray (12)
As shown in FIG. 12, the MD is moved to the roller (1).
Before touching 1), the front switch (18) by MD
Is turned on (Y in S2). Then, the control circuit (2)
Recognizes MD mode and retracts the lower side of roller (11)
(Roller (11) rotates counterclockwise in FIG. 14)
To rotate the roller motor (171)
(S3). As described above, the roller into which the MD is inserted
The gap between (11) and MD tray (12) is larger than the thickness of MD.
Slightly narrow. The roller (11) is supported on the right side as a fulcrum.
And the left side is movably held against the holding spring (16)
Have been. Therefore, the state in which the roller (11) is rotating
Insert the MD until the user touches the roller (11)
Then, as shown in FIGS.
Due to the rolling force, the left side of the roller (11) presses the holding spring (1).
Lift up against 6). And presser spring (16)
The roller (11) presses the MD, and the MD
Conveyed inside. As shown in FIG. 18, the MD is transported for a predetermined distance.
Then, the rear switch (19) is turned ON (S
4). As shown in FIG. 19, the MD is further transported by a predetermined distance.
Then, the front switch (18) returns to OFF (S5).
Y). At this time, the rear switch (19) remains ON
It is. When the control circuit (2) detects this state, it goes low.
Stops rotation of roller (11), judging that
(S6). Then, the control circuit (2) operates as described above.
Then, the clamp unit (40) is controlled in the MD mode, and FIG.
Then, the MD is clamped (S7). Shown in FIG.
As shown, the rear switch (19) is turned off when clamping.
Become. In FIG. 41, the control circuit (2) is EJE
Upon receiving the CT request signal (S8), as described above, M
In the D mode, the clamp section (40) is controlled to
Is released (S9). When the clamp is released,
The state returns to 21 and the rear switch (19) is turned on again.
become. Then, the control circuit (2) operates as shown in FIG.
Until the rear switch (19) turns off.
The roller (11) is rotated in a direction opposite to the direction of step S3.
(S10 to S12). As shown in FIG. 6, the CD is read by the user.
Inserted between the roller guide (11) and the CD guide (13).
As shown in FIG. 24, the CD is moved to the roller (11).
Before touching, the front optical sensor (22) is turned on.
(Y of S21). Then, the control circuit (2) operates in the CD mode.
In the direction of pulling in the upper side of the roller (11) (Fig.
25 is the direction in which the roller (11) rotates counterclockwise
(2) rotate the roller motor (171) (S2).
2). As described above, the roller into which the CD is inserted
The gap between (11) and the CD guide (13) is larger than the thickness of the CD.
Slightly narrow. Further, the roller (11) is provided for the right and left rollers.
Rotatable downwards against springs (15L) and (15R)
Is held. Therefore, the roller (11) is rotating.
Until the user touches the CD with the roller (11)
When inserted, the roller (11) rotates as shown in FIG.
By the force, the roller (11) makes the roller spring (15L)
Go down against (15R). And a spring for the roller
By (15L) and (15R), the roller (11) converts the CD.
By pressing, the CD is transported to the inside of the apparatus. When the conveyed CD is an 8 cm CD,
Will be explained. When the 8 cm CD is transported for a predetermined distance, the rear
Is turned on (S23). 8c
The conveyance of the mCD proceeds, and the state of FIGS.
In the state of 29, 8cmCD is for 8cm switch
The lever (34) against the urging force of the spring (35)
Rotate in the measuring direction. Then switch for 8cm (3
6) is turned ON (Y in S24). This allows
The control circuit (2) indicates that the inserted one is an 8 cm CD.
Recognize and turn the motor (76) of the CD turntable.
The gain to be rotated is set for 8 cm (S25). Ma
Also, determine that loading is complete and stop roller rotation.
(S26), the process proceeds to step S27. On the other hand,
Even if an 8cm CD is transported, a stopper for 8cm
(32L) (32R) is for 12cm because it does not rotate
Lock of the stoppers (31L) and (31R) is not released.
No. Therefore, a stopper (32L) (32R) for 8cm
Does not move, and the conveyance of the 8 cm CD is prevented. Note that an 8 cm CD is centered by the user.
Stopper for 12cm on the left and right even if it is inserted out of position
(31L) (31R) must be unlocked at the same time
Stopper (32L) (32R) for 8cm that does not move
2cm CD was moved to the center,
It becomes the state of 6,27. When the transported CD is a 12 cm CD,
Will be described. When a 12 cm CD is transported a predetermined distance,
The rear optical sensor (23) is turned on (S23). Further
As the transport of the 12 cm CD proceeds, as shown in FIGS.
12cm CD 8cm stopper (32L) (3
Press 2R). Thereby, as described above, for 8 cm
Stopper (32L) (32R) pivots for 12cm
The lock of the stoppers (31L) and (31R) is released,
As shown in FIGS. 32 and 33 and FIGS.
Stoppers (31L) and (31R) rotate. At this time, the stopper for the left 12 cm
Lever for 8cm switch supported on (31L)
(34) for the left 12cm along with the shaft hole (34a)
8cm switch to rotate with stopper (31L)
Switch for 8cm by lever for switch (34)
(36) is never turned on. The stopper (31L) (31L) for 12cm
R) is rotated to the state shown in FIGS.
Switches (31L) and (31R) are 12cm
The switch (37) is turned ON (Y in S28). to this
Therefore, the inserted control circuit (2) is a 12 cm CD.
Is recognized, and the motor (7
Set the gain for rotating 6) for 12 cm (S2
9). Also, determine that loading is complete and rotate the rollers.
It stops (S26) and proceeds to step S27. It is to be noted that a 12 cm CD is centered by the user.
-Stopper for left and right 12cm even if inserted with misalignment
(31L) (31R) must be unlocked at the same time
In order not to move, move the 12cm CD to the center
30 and 31 are obtained. In step S27, that is, the CD
When the loading is completed, the control circuit (2) operates as described above.
36, the clamp unit (40) is controlled in the CD mode, and FIG.
The playback unit (70) is rotated counterclockwise as shown in FIG.
Move the D turntable (72) to the center of the CD.
Then, as shown in FIG. 38, the CD is clamped (S27). In FIG. 42, the control circuit (2) is EJE
Upon receiving the CT request signal (S30), as described above,
In the CD mode, the clamp unit (40) is controlled to
The pump is released (S31). And the control circuit (2)
As shown in FIG. 39, the optical sensor (23) at the rear
Roller in the direction opposite to step S22 until F
(11) is rotated (S32 to S34). As described above, the present invention uses an optical sensor.
Discs to distinguish between large and small discs
Even if a disc with a transparent part is inserted,
There is no misunderstanding of the small diameter. This allows, for example,
There is no mistake in setting the gain for rotating the disk. Further, the present invention does not require the use of an optical sensor.
In order to detect the end of disk transport,
Erroneous transport stop even if a disc with a transparent part is inserted
There is no work.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing a main part of the present invention. FIG. 2 is a plan view of the mechanism shown in FIG. 1; FIG. 3 is a front view of the mechanism. FIG. 4 is a right side view of the mechanism. FIG. 5 is a plan view showing a disc insertion position. FIG. 6 is a right side view showing a disc insertion position. FIG. 7 is a left side view showing a disc insertion position. FIG. 8 is a front view showing a driving unit of a roller. FIG. 9 is a left side view illustrating a driving unit of the roller. FIG. 10 is a partial left side view showing a method for holding the roller on the left side. FIG. 11 is a left side view showing a rear switch for the MD. FIG. 12 is a plan view showing a first state of MD pull-in. FIG. 13 is a plan view showing a second state of the MD pull-in. FIG. 14 is a left side view showing a second state of the MD pull-in. FIG. 15 is a partially enlarged view of a main part of FIG. 14; FIG. 16 is a plan view showing a third state of the MD pull-in. FIG. 17 is a left side view showing a third state of the MD pull-in. 18 is a detailed view of a main part of FIG. FIG. 19 is a plan view showing an end state of the MD pull-in. FIG. 20 is a front view showing an end state of the MD pull-in. FIG. 21 is a left side view showing an end state of the MD pull-in. FIG. 22 is a left side view showing a clamp state of the MD. FIG. 23 is a left side view showing a state in which the MD is discharged. FIG. 24 is a plan view showing a first state of CD pull-in. FIG. 25 is a right side view showing a second state of pulling in a CD. FIG. 26 is a plan view showing a third state of 8 cm CD pull-in. FIG. 27 is a detailed view showing a main part of FIG. 26; FIG. 28 is a plan view showing an end state of pulling in the 8 cm CD. FIG. 29 is a detailed view showing a main part of FIG. 28. FIG. 30 is a plan view showing a third state of pulling in a 12 cm CD. FIG. 31 is a detailed view showing a main part of FIG. 30; FIG. 32 is a plan view showing a fourth state of pulling in a 12 cm CD. FIG. 33 is a detailed view showing a main part of FIG. 32; FIG. 34 is a plan view showing an end state of pulling in a 12 cm CD. FIG. 35 is a detailed view showing a main part of FIG. 34; FIG. 36 is a plan view showing movement of a CD turntable. FIG. 37 is a plan view showing a slide mechanism of the slide plate. FIG. 38 is a right side view showing a clamp state of a 12 cm CD. FIG. 39 is a plan view showing a state of discharging a CD. FIG. 40 is a plan view showing the reason for moving the CD turntable. FIG. 41 is a flowchart showing a main operation of the present invention. FIG. 42 is a flowchart showing a main operation of the present invention. FIG. 43 is a plan view showing the position of an optical sensor in a conventional disc determination. FIG. 44 is a side view showing a position of an optical sensor in a conventional disc determination. [Description of Signs] 1 Mechanism 2 Control circuit 10 Loading section 11 Roller 11 1 Roller shaft 11 Roller rubber section 12 MD tray 13 CD guide 14 Roller holding bracket 14a Roller holding bracket shaft hole (center of rotation) 14b Roller holding Shaft hole of metal fitting (roller left) 14c Shaft hole of roller holding metal (roller right) 14d Shaft hole of roller holding metal (MD tray left) 14e Shaft hole of roller holding metal (MD tray right) 15L Left roller spring 15R Right roller spring 16 Pressing spring 17 Roller driving unit 171 Roller driving unit motor 172 Roller driving unit gear unit 173 Roller driving unit belt 18 MD Front switch 19 MD Switch 20 lever (front switch) 21 lever (front switch) 22 front optical sensor 2 for CD 3 Rear optical sensor 30 for CD Mounting bracket for stopper 31L Stopper for 12cm (left) 31La Stopper for 12cm (left) Shaft hole 31R Stopper for 12cm (right) 31Ra Stopper for 12cm (right) Stopper for shaft hole 32L 8cm (left side) Stopper for 32La 8cm stopper (left side) Stopper for 8cm 8cm (left side) Lock nail 32Lc Stopper for 8cm (left side) Projection 32R for 8cm stopper (right side) 32Ra Shaft hole for 8cm stopper (right side) 32Rb Lock claw for 8cm stopper (right side) 32Rc Convex part for stopper (right side) for 8cm 33L Spring for stopper (left side) 33R Spring for stopper (right side) 34 8cm Switch lever 34a 8cm switch lever shaft hole 35 Switch Spring for switch 368 Switch for 8 cm 37 Switch for 12 cm 40 Clamp unit 41 Motor of clamp unit 42 Gear unit of clamp unit 43 Fluctuation unit of clamp unit 431 Drum 44 of fluctuation unit of clamp unit Crank mechanism 441 Sliding of crank mechanism Plate 442 Crank mechanism link 70 Playback unit 71 MD turntable 72 CD turntable 73 Head 74 Playback unit shaft hole 75 MD turntable motor 76 CD turntable motor

Continuation of front page    (72) Inventor Shinichi Aoki             3-201 Minamiyoshikata, Tottori City, Tottori Prefecture Tottori             Sanyo Electric Co., Ltd. F term (reference) 5D046 AA12 AA19 BA06 CB03 CD03                       EA04 EA06 FA01 FA04 GA02                       GA03 GA04 GA15 HA10

Claims (1)

Claims: 1. A transport means for transporting a disc having a diameter of 12 cm and 8 cm horizontally in the radial direction of the disc, and a transport of the disc of 8 cm disc is stopped by contact to transport the disc of 12 cm. 8cm stopper allowed by rotation,
Stopping the conveyance of the 12 cm disk permitted by the 8 cm stopper at the concentric stop position with the 8 cm disk 1
Stopper for 2cm, detection switch for 8cm, 8cm
8 when the disc is stopped at the concentric stop position.
a switch operating portion for switching the detection switch for cm to ON to prevent the detection switch for 8 cm from being turned ON by rotating the stopper for 8 cm by transporting the disk of 12 cm. Disk drive device.