JP2001155401A - Disk reproducing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a disk reproducing device having a disk detecting function which is capable of surely detecting various kinds of disks to be used. SOLUTION: This disk reproducing device is provided with a fixing guide which is disposed on the upper face side of a disk inserting and ejecting port and guides the disk, a driving roller which is disposed on the lower face side of the disk so as to be freely pressed and released, holds and carries the disk in cooperation with the fixing guide, left and right slide lever which are disposed on the disk inserting and ejecting port and of which the abutting parts come in touch with a peripheral part of the disk and, thereby, are moved in the direction where the abutting parts part from each other, a pressing means which applies elastic force to the slide levers in the direction where the abutting parts approach each other, two left and right sensors of which the output states change in accordance with moving positions of the left and right slide lever and a disk state judging means which judges the inserted state of the disk in accordance with the output states of the left and right sensors.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disc reproducing apparatus and, more particularly, to a disc inserting / ejecting structure having a disc detecting function capable of reliably detecting a disc when inserting or ejecting the disc.

[0002]

2. Description of the Related Art FIG.
This will be described with reference to FIG.

FIG. 13 is a diagram showing a schematic configuration of a main part of a conventional disk reproducing apparatus, in which (a) is a plan view, (b) is a view taken in the direction of arrow K,
(C) It is LL sectional drawing.

[0004] Reference numeral 200 denotes a main part of the disc reproducing apparatus, which comprises a disc insertion / ejection section 210, a disc detection section 230, a disc rotation section 240, a pickup (not shown), and the like.

[0005] The disk insertion / ejection unit 210 is composed of a fixed guide 215, a driving roller 220, a driving force transmission mechanism (not shown), and the like.

[0006] The fixed guide 215 is a guide section of a transport section that inserts or ejects a disk by rotation of the drive roller 220 in a state where the disk is scissored with the drive roller 220. The fixed guide 215 has a rectangular plate shape, and is provided with a gradient such that its thickness increases from the substantially central portion in the left and right side directions in the drawing (the direction perpendicular to the direction of insertion and ejection of the disk), and the peripheral edge of the disk abuts. An abutment surface 216 is formed. Further, on the upper surface of the fixed guide 215, the mounting holes of the sub-substrate 238 and the light emitting elements 231, 233, 235
Hole through which the light passes. Fixed guide 215
A resin material is used as the material of the above and is formed by molding. The fixed guide 215 is provided in the disc insertion / ejection port 2.
45.

The drive roller 220 rotates with the fixed guide 215 holding the disk in place with scissors, and conveys the disk to a predetermined position. The driving roller 220 includes a rotating shaft 221 and a rubber roller 222 formed on the outer periphery of the rotating shaft 221.
Is formed with a tapered portion so as to increase in diameter toward both ends from the central portion. Further, both ends of the rotating shaft 221 are held by bearings, and one end is
The gear for rotating 0 is fixed. The drive roller 220 is urged in the direction of the fixed guide 215,
A spring member (for example, a torsion spring or a tension coil spring,
Each of them is elastically held by a member (not shown), moves in the direction of the disk when the disk is transported, and presses against the disk by the elastic force of the spring member. When playing the disc, the disc is separated from the disc by switching. The gear fixed to the rotating shaft 221 of the driving roller 220 is meshed with the driving force transmitting mechanism for connecting the driving motor and transmitting the rotating force. It can be conveyed in the direction or the discharge direction.

[0008] The disk detecting section 230
1, 233, 235 and light receiving elements 232, 234, 236
The light emitting elements 231 and 23 are provided on a sub-substrate 238 provided above the insertion / ejection passage of the disk.
3 and 235 are mounted at predetermined positions (three places) with the light receiving elements 232, 234, and 236 facing the main substrate 237 provided below the insertion / ejection passage.
Then, the light emitted from the light emitting element 231 to the light receiving element 232 when the disk passes through the insertion / ejection passage is shielded by the disk, so that it is determined that the disk is present.

Next, the operation of inserting and ejecting a disk will be described.

When a disc is inserted through the insertion / ejection port 245, the light emitted from the light emitting element 231 in the P section is blocked by the inserted disc, so that it is determined that a disc is present, and the disc transported in pressure contact with the fixed guide 215 is carried out. Drive roller 220 starts rotating. When the disk inserted in this state reaches the drive roller 220, the drive roller 2
The disc is sucked by the rotation of 20, and is conveyed in the direction of the playing section (reproducing section). When the disk reaches a predetermined position, a switch (not shown) is activated, and the rotation of the drive roller 220 is stopped. At the same time as the rotation of the drive roller 220 stops, the disk clamper 241 descends to fix the disk to the disk rotating unit 240. At the same time, the drive roller 220 separates from the disk. Drive roller 2
When the disk 20 moves away from the disk, the disk rotating section 240 rotates to reproduce or record information recorded on the disk.

When the user presses an eject button (not shown) to remove the disc from the playing section, the drive roller 220 is pressed.
Moves in the direction of the disk, and clamps the disk with the fixed guide 215. At the same time, the disc clamper 24
1 leaves the disk. In this state, the driving roller 220
Rotates (in the direction opposite to the direction at the time of insertion), and conveys the disk in the direction of the insertion / ejection port 245. When the disc is transported to a predetermined position, the light emitting element 233 of the R section or the light emitting element 235 of the Q section which has been shielded from light by the disc is received by the light receiving element 234 or 236, and the rotation of the drive roller 220 is stopped. . In this state, the disc can be taken out by hand.

[0012]

However, the disc detecting unit 230 of the disc reproducing apparatus 200 described above uses light receiving / emitting elements 232 and 231 so that the presence or absence of a disc can be checked when a disc is inserted or ejected. Detected by presence or absence. However, in the market, there is a transmissive disc through which light for disc detection is transmitted, or an inner peripheral portion of the disc (information recording section).
A deformed maxi single disk or the like in which only aluminum is deposited is available. With respect to these discs, the conventional disc detection unit 230 including the light receiving / emitting elements 232 and 231 transmits light, so that accurate detection cannot be performed, and the insertion and ejection of the disc may not be performed smoothly. is there. In addition, if a disk is inserted even when the power is off, the power is automatically turned on, and if a standby function (WAKE / UP function) for starting the disk reproducing device 200 is to be added, the conventional disk detecting unit 230 is used. In the disk reproducing apparatus 200 configured as described above, it is necessary to keep the power on at all times, and there is a problem that waste is generated due to a large dark current.

An object of the present invention is to solve the above-mentioned problem, and an object of the present invention is to provide a disk reproducing apparatus having a disk detecting function capable of reliably detecting various disks used.

[0014]

According to the present invention, there is provided a disc reproducing apparatus for reproducing information recorded on a disc, wherein the disc reproducing apparatus is provided at a disc insertion slot.
Left and right slide levers in which a contact portion abuts on a peripheral portion of the disc and moves in a direction in which the contact portions are separated from each other; and urging means for applying elastic force to the slide lever in a direction in which the contact portion approaches. And two left and right sensors whose output states change in accordance with the movement positions of the left and right slide levers, and disk state determination means for determining a disk insertion state in accordance with the output states of the left and right sensors. It is characterized by having.

The left and right sensors are mechanical switches whose connection state changes according to the pressing state of the knob, and the knob is pressed by a pressing portion of the slide lever in accordance with the position of the slide lever. It is assumed that.

Further, the knob is rotated about a rotation fulcrum, and a restoring force is applied in a predetermined direction. When the slide lever moves in a direction of pressing the knob, the knob is moved by the knob. The slide lever is provided with an inclination at a contact portion of the knob so that a force is applied in a direction opposite to the rotation direction by the return force, and a rotation fulcrum position of the knob is defined. It is assumed that.

The left and right sensors are optical sensors formed of a light emitting element and a light receiving element, and an optical path between the light emitting element and the light receiving element is provided at a shielding portion of the slide lever according to the position of the slide lever. It is characterized by being shut off.

Further, the shape of the slide lever and the position of the sensor may be such that, when the disc is not in contact with the slide lever, one of the first slide levers causes one of the first sensors to be in the first output state and the other to provide the other. When the second sensor is in the second output state, the disc comes into contact with the first slide lever, and the first slide lever moves by a first predetermined amount, the first sensor enters the second state, and the disc moves to the second slide lever. When the second slide lever contacts the slide lever and the second slide lever moves by a second predetermined amount, the second sensor enters the first state, the disc contacts the second slide lever, and the second slide lever is moved to the second position. It is characterized in that the first sensor is set to the first state when it moves to a third predetermined amount longer than the fixed amount.

The third predetermined amount is smaller than the maximum movement amount of the first slide lever when a large-diameter disk is inserted, and is smaller than the maximum movement amount of the first slide lever when a small-diameter disk is inserted. It is characterized in that it is defined to be larger than the movement amount.

Further, there is provided a disk presence / absence detection sensor for detecting a state in which the disk is inserted by a predetermined amount or more, and the disk state determination means is provided based on the detection state of the disk presence / absence detection sensor and the output state of the sensor. It is characterized by judging a state.

The apparatus further includes a roller which conveys the disk by rotating while being in contact with the disk, wherein the disk state determining means determines the state of the disk based on a driving state of the roller and a change in an output state of the sensor. It is characterized by doing.

[0022] Further, a forced ejection means for rotating the roller in a direction for ejecting the disc when the eject switch for disc ejection operation is operated regardless of the output state of the sensor is provided. is there.

Further, the forcible ejecting means rotates the roller in a direction for ejecting the disc after rotating the roller in an inserting direction.

When the eject switch for disc ejection operation is operated in the disc ejection state, a forced ejection means for rotating the roller in a direction for ejecting the disc regardless of the output state of the sensor; Detecting the presence or absence of the disk, and detecting the absence of the disk when the first sensor is in the second output state and the other second sensor is in the first output state. And a roller drive inhibiting means for maintaining the roller in a stopped state even when a switch is operated.

When the reload switch for disc reinsertion is operated, regardless of the output state of the sensor,
A forcible reinsertion means for rotating the roller in the direction of inserting a disk is provided.

[0026]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A disk reproducing apparatus according to a first embodiment of the present invention will be described with reference to FIGS. 1, 2, 3, 4, 5, 5, 6, 7 and 8. .

FIG. 1 is a schematic structural view showing a main part of a disk reproducing apparatus according to a first embodiment of the present invention, in which FIG. 1 (a) is a plan view, FIG. It is an enlarged perspective view.
FIG. 2 is a plan view (in a state where a 8/12 cm disk has been completely inserted) showing a schematic configuration of the disk detection unit according to the first embodiment of the present invention. FIGS. 3A and 3B are schematic views of the left slide lever according to the first embodiment of the present invention, in which FIG. 3A is a plan view, FIG. 3B is a front view, and FIG. FIG. 4 is a schematic view of the right slide lever according to the first embodiment of the present invention, in which FIG. 4 (a) is a plan view, FIG. 4 (b) is a front view, and FIG.

Reference numeral 1 denotes a main part of the disk reproducing apparatus, which includes a disk rotating unit 3, a disk inserting / ejecting unit 20, a disk detecting unit 3
And a pickup (not shown) for irradiating the disk with radar light, receiving the reflected light, and reading data recorded on the disk.

The disk insertion / ejection section 20 includes a fixed guide 2
1, a driving roller 25, a driving force transmission mechanism (not shown), and the like.

The fixed guide 21 is a guide section of a transport section for inserting or ejecting a disk by rotating the drive roller 25 with the disk being scissored with the drive roller 25. The fixed guide 21 has a rectangular plate shape, and is provided with a gradient so as to increase its thickness from the substantially central part in the left and right side directions in the drawing (in the direction perpendicular to the direction of insertion and ejection of the disc).
A contact surface 22 with which the outer peripheral edge of the disk contacts is formed. A resin material is used as the material of the fixed guide 21 and is formed by molding. The fixed guide 21 is formed above the disc insertion / ejection port 11.

The drive roller 25 rotates while the disc is scissored by the fixed guide 21 and conveys the disc to a predetermined position. The driving roller 25 includes the rotating shaft 2
6, a rubber roller portion 27 formed on the outer periphery of the rotating shaft 26
And the like. The rubber roller portion 27 is formed with a tapered portion 28 so as to increase its diameter from the center toward both ends. Further, both ends of the rotating shaft 26 are held by bearings, and a gear for rotating the driving roller 25 is fixed to one end. The drive roller 25 is elastically held by a spring member (for example, a torsion spring or a tension coil spring, both of which are not shown) so as to urge in the direction of the fixed guide 21. And presses against the disk by the elastic force of the spring member. When the disk is not transported, the disk is separated from the disk by switching. The gear fixed to the rotating shaft 26 of the driving roller 25 is meshed with a driving force transmitting mechanism that is connected to the driving motor and transmits the rotating force. It can be conveyed in either direction.

The disk detecting section 30 detects whether or not the disk is staying in the disk transport path, and includes a left slide lever 31, a right slide lever 40, a tension coil spring 48, a left switch 50 and a right switch 5.
1, a disk presence / absence switch unit 55 and a control unit (not shown).

As shown in FIG. 3, the left slide lever 31 extends vertically upward from both side surfaces of the base portion (bottom surface) 32.
3 and 34 are formed, and have a groove shape in which the right slide lever 40 is slidably engaged. The switch pressing portion 35 with which the knob of the right switch 51 contacts the base portion 32 and the chassis 1
A slot 36 is formed at the right end of the slot 36 in the drawing so that the locking portion 14 of the locking claw 13 erected from the bottom of the chassis 12 is inserted. The section is getting bigger. An engaging claw 37 is formed on the wall surface 34 so as to engage with the elongated hole 16 formed in the front portion 15 of the chassis 12 in the lateral direction. A disk guide 38 is formed at the end of the wall surface 34 extending leftward in the drawing, with which the peripheral edge of the disk abuts. The upper end of the disk guide 38 is engaged with a tension coil spring 48. A part 39 is formed. Note that a resin material is used as a material of the left slide lever 31 and is formed by molding.

As shown in FIG. 3, the right slide lever 40 has a wall surface 42 formed vertically upward from a base portion (bottom surface) 41. The right end of the wall surface 42 in the figure is in contact with the peripheral edge of the disk. Guide part 43 is formed,
A tension coil spring 48 is provided at the upper end of the disc guide 43.
Is formed. A switch pressing portion (gradient portion) with which the knob of the left switch 50 contacts the base portion 41.
45 and a long hole 46 for assembling with the chassis 12 are formed. The left end of the long hole 46 in the figure is inserted so that the locking portion 14 of the locking claw 13 erected from the bottom surface of the chassis 12 is inserted. The groove width is partially large. In the wall surface 42, a long hole 1 formed in the front portion 15 of the chassis 12 in the lateral direction.
6 are formed with engaging claws 47. Note that a resin material is used as a material of the right slide lever 40 and is formed by molding.

Left switch 50 and right switch 51
Is a switch of the same specification, which is a mechanical switch that is turned ON / OFF by pressing a knob protruding from the main body and changing the angle of the knob. The left switch 50 and the right switch 51 are connected to the left slide lever 31 and the right slide lever 40, respectively.
Are mounted at predetermined positions on the substrate 52 so as to contact the switch pressing portions 35 and 45. The one mounted on the left side in the figure is referred to as a left switch 50, and the one mounted on the right side is referred to as a right switch 51.

Reference numeral 55 denotes a disc presence / absence switch section, which is provided so that the periphery of the disc comes into contact when the disc is near the playing section (insertion completed). The disc presence / absence switch section 55 is connected to a disc contact lever 56, a switch 57 and a disc contact lever 56 which contact the peripheral edge of the disc and rotate following the movement of the disc, and turn on / off the switch 57. Switch pressing lever 58
And the like. The disk contact lever 56 is a tension coil spring or a torsion spring (both not shown).
Urged toward the playing section.

The disc detecting section 30 moves the left slide lever 31 and the right slide lever 40 (to follow the outer peripheral edge when the disc is conveyed in contact with the left and right slide levers 31 and 40). Change of position to change, or 8c
The left switch 50 and the right switch 51 are turned on and off by the change in position due to the difference between the m disk 5 and the 12 cm disk 6 and the position change due to the improper insertion when the disk is inserted. The state of the disk is detected by a combination of the ON and OFF states of the switch 57 of the unit 55, and the control unit controls the rotation of the drive roller 25 to insert and eject the disk.

Next, the assembly of the left and right slide levers will be described.

The left and right slide levers 31 are attached to the chassis 12.
In order to assemble the chassis 12, first, a portion where the groove width of the long hole 36 of the left slide lever 31 is partially increased is inserted into the locking claw 13 erected from the bottom surface of the chassis 12. A long hole 16 formed in the front part 15 in the lateral direction
Then, the engaging claw 37 formed on the wall surface 34 of the left slide lever 31 is engaged. Next, the right slide lever 40 is overlapped with the right slide lever 40 so as to overlap the left slide lever 31.
The slot in which the groove width of the long hole 46 is partially increased is inserted, and the long hole 46 formed in the front portion 15 of the chassis 12 in the lateral direction and the engaging hole formed in the wall surface 34 of the right slide lever 40 are inserted. The dowel 37 is engaged. Next, a tension coil spring 48 is hung on locking portions 39, 44 formed on the upper end portions of the disk guide portions 38, 43 of the left and right slide levers 31, 40.

Next, the left and right slide levers 31, 40 and the left
The positional relationship between the right switches 50 and 51 will be described. The positional relationship between the left / right slide levers 31, 40 and the left / right switches 50, 51 is as follows.

1) The disc is a left / right slide lever 31,
When it does not hit 40 (Play, Eject)
The switch pressing portion 45 of the right slide lever 40 presses the knob of the left switch 50, so that the left switch 50 is turned on and the right switch 51 is turned off.

2) When the left and right slide levers 31 and 40 are fully opened by the 12 cm disc 6, the switch pressing portion 45 of the right slide lever 40 is turned to the left switch 50.
And is turned off. Also, left slide lever 3
The first switch pressing portion 35 presses the knobs of the left switch 50 and the right switch 51, and the left and right switches 50, 51
Are both turned on.

3) When the left and right slide levers 31 and 40 are fully opened by the 8 cm disk 5, the switch pressing portion 35 of the left slide lever 31 presses the knob of the right switch 51 to be turned on. . Also, the switch pressing portion 45 of the right slide lever 40 is separated from the left switch 50 and
The state becomes the FF state. (Both the left and right switches 50 and 51 are not turned ON at the same time.) The left and right slide levers 31 and 40 are slidably mounted on the front surface of the chassis 12 in the left and right direction, and are provided with tension coils. It is elastically urged toward the center by the spring 48. In this state (before the disc is inserted or in the playing state), the relationship between the left and right slide levers 31 and 40 and the left switch 50 and the right switch 51 is as follows. ) 45 is in contact, and the left switch 50 is in the ON state. In addition, the right switch 51 is in the OFF state because the switch pressing portion 45 of the right slide lever 40 is separated from the knob of the right switch 51.

Next, the operation of inserting and ejecting a 12 cm disc will be described with reference to FIGS. 5, 6 and 7. FIG. In addition, 8
The operation of inserting and ejecting the cm disc is substantially the same as that of the 12 cm disc, and therefore the description thereof is omitted.

FIG. 5 is a diagram for explaining the operation of inserting and ejecting a disc (12).
FIG. 21 is a plan view showing a state where a cm disk is completely inserted. FIG. 6 is an explanatory view of a disk insertion / ejection operation (a plan view showing a state in which a 12 cm disk is being inserted / ejected). FIG. 7 is an explanatory view of a disk insertion / ejection operation (a plan view showing a state where the 12 cm disk is completely ejected).

First, the insertion of the 12 cm disc 6 will be described. Insert 12cm disc 6 into disc insertion / ejection port 1.
7, the peripheral edge of the 12 cm disc 6 comes into contact with the disc guides 38, 43 of the left and right slide levers 31, 40, as shown in FIG.
1, and 40 are slid in the left and right directions and pushed and spread to move to a predetermined position. And the left slide lever 31
Of the right switch 51 comes into contact with the knob of the right switch 51, and the right switch 51 is turned on. Further, the switch pressing portion 45 of the right slide lever 40 is separated from the knob of the left switch 50, and the left switch 50 is turned off. In such a switch state, it is determined that the 12 cm disk 6 is present, and the disk transport drive roller 25 pressed against the fixed guide 21 starts rotating. The 12 cm disc 6 inserted in this state is
When the rotation of the drive roller 25 is reached, 1
The 2 cm disc 6 is transported to the playing section. 12cm
When the disc 6 is further transported, the 12 cm disc 6
Is in contact with the disk guides 38, 43 of the left and right slide levers 31, 40, so that the 12 cm disk 6 is conveyed while sliding the left and right slide levers 31, 40 in the left and right direction. Then, after passing through the maximum diameter portion of the 12 cm disk 6, as shown in FIG.
The left and right slide levers 31 and 40 move inward by following the elastic force of the extension coil spring 48 while following the outer edge of the disk 6. When the 12 cm disc 6 is transported to the position of the playing section, the left switch 50 is turned on and the right switch 51 is turned off as shown in FIG.
And the disk presence / absence switch 55
Switch 57 is turned ON. In such a switch state, the rotation of the drive roller 25 is stopped. When the rotation of the drive roller 25 stops, the disc clamper 4 descends and the 12 cm disc 6 is fixed to the rotating section 3. At the same time, the drive roller 25 separates from the 12 cm disk 6. Then, the rotating unit 3 rotates to reproduce or record the information recorded on the 12 cm disk 6.

Next, the ejection of a 12 cm disc will be described. To eject the 12 cm disc 6, an eject button (not shown) is pressed. Then, the driving roller 25 becomes 1
The disk is moved toward the 2 cm disk 6 and the drive roller 25 and the fixed guide 21 sandwich the 12 cm disk 6. At the same time, the disc clamper 4 rises and the 12 cm disc 6
Is released. When the clamped state of the 12 cm disk 6 is released, the drive roller 25 rotates and
The 2 cm disc 6 is transported toward the disc insertion / ejection opening. Then, when the 12 cm disc 6 is transported,
cm disk 6 has left and right slide levers 31 and 4
0 because it is in contact with the disc guide portions 38 and 43 of
The 12 cm disk 6 moves by sliding and widening the left and right slide levers 31 and 40 in the left and right directions. Further, the switch 57 of the disk presence / absence switch unit 55 is turned off. After passing through the maximum diameter portion of the disk, the left and right slide levers 31 and 40 move inward by the elastic force of the extension coil spring 48 while following the outer shape of the 12 cm disk 6. When the 12 cm disk 6 is transported to a predetermined position, the switch pressing portion 35 of the left slide lever 31 is separated from the knob of the left switch 50, and the left switch 50 is turned off. In such a switch state, the drive roller 25 stops. In this state, the 12 cm disk 6 can be taken out by hand.

When the 12 cm disk 6 is inserted or ejected, both the left and right switches 50 and 51 are turned on at the same time, and when the 8 cm disk 5 is not turned on at the same time, the disc diameter can be determined.

Next, disk reloading and eject processing will be described with reference to FIG. FIG. 8 is a flowchart showing reloading and eject processing of a 12 cm disk.

This process is repeated at predetermined time intervals together with other processes.

In step S10, it is determined whether or not a disc reload command has been issued. If there is a reload command, the process proceeds to the next step S20, and if not, the process proceeds to the next step S11. In step S20, the drive roller 25 for transporting the disk is rotated in the insertion direction, and the process proceeds to the next step S21. In step S21, it is determined whether or not a disk has been inserted into the disk rotating unit 3, and if the insertion has not been completed, the processing in step S21 is continued. If the insertion has been completed, the next step S
Then, the rotation of the drive roller 25 for transporting the disk is stopped, and the process is terminated.

In step S11, the disc eject
It is determined whether or not a command has been issued (whether the Eject switch has been operated). If there is an Eject command, the process proceeds to the next step S12, and if not, the process ends. In step S12, it is determined whether the disc has been completely ejected. If the left switch 50 of the disk detection unit 30 is OFF, the right switch 51 is ON, and the switch 57 of the disk presence / absence switch unit 55 is OFF, it is determined that the ejection is completed, and the process is terminated. If the above state has not been reached, the next step S
Move to 13.

In step S13, the disk detection unit 30
Switch 50 is OFF, and right switch 51 is O
N, the switch 57 of the disk presence / absence switch unit 55 is set to O
It is determined whether or not the state is N. If the state is not the above, the process proceeds to the next step S14, where the drive roller 25 for transporting the disk is rotated in the loading direction for several seconds, and then proceeds to the next step S15. If it is in the above state, the process proceeds to the next step S16.

In step S15, the left switch 50 is changed from ON to OFF, the right switch 50 is changed from OFF to ON,
It is determined whether the switch 57 has changed from ON to OFF to any output state. If there is no change, it is determined that there is no disk, and the process is terminated. If there is a change in the output state, the process proceeds to the next step S16, in which the drive roller 25 for carrying the disc is rotated in the discharge direction, and the process proceeds to the next step S17.

In step S17, the disk detection unit 30
Switch 50 is OFF, and right switch 51 is O
N, the switch 57 of the disk presence / absence switch unit 55 is set to O
It is determined whether or not the state of the flip-flop, that is, the state where the disk has been completely ejected, and if not, the process is continued. If the above state is satisfied, the process proceeds to the next step S18, where the drive roller 2
The rotation of No. 5 is stopped, and the process is completed.

As described above, according to the disk reproducing apparatus 1 of the first embodiment of the present invention, the mechanical left / right switches 50 and 51 and the left / right slide levers are used to detect the presence / absence of a disk. Since a detection mechanism based on a combination of 31, 31 is used, for example, detection of a transmissive disk through which light is transmitted, a modified maxi-single disk in which aluminum is deposited only on the inner peripheral portion (information recording portion) of the disk, and the like. Can be performed reliably. Therefore, insertion and ejection of the disc can be performed smoothly and reliably.

In addition, since the dark current for keeping the power of the left and right switches 50 and 51 of the disk detecting mechanism always ON is small, the power of the disk reproducing apparatus 1 is turned OFF. Even when a disc is inserted, the power of the disc reproducing apparatus 1 is automatically turned on, which is suitable for a standby function for activating the disc reproducing apparatus 1, and waste of power consumption can be reduced.

Next, a second embodiment of the present invention will be described with reference to FIG.
This will be described with reference to FIGS. 10, 11, and 12. Note that the second embodiment is a modification of the disc detection unit of the first embodiment, and the other components are substantially the same as those of the first embodiment. Description is omitted. The left and right slide levers are assembled and the disc is inserted and ejected due to differences in disc detection methods (mechanical switches and optical sensors).
Others are almost the same, and the description is omitted.

FIGS. 9A and 9B are schematic structural views showing a main part of a disk reproducing apparatus according to a second embodiment of the present invention, in which FIG. 9A is a plan view, FIG. Perspective enlarged view, (d)
It is a G section detailed view. FIG. 10 is a plan view (8/1) showing a schematic configuration of a disk detection unit according to the second embodiment of the present invention.
2 cm disc is completely inserted). FIG. 11 is a schematic diagram of a left slide lever according to a second embodiment of the present invention.
5A is a plan view, FIG. 5B is a front view, and FIG.
FIG. 12 is a schematic view of a right slide lever according to a second embodiment of the present invention, in which (a) is a plan view, (b) is a front view, and (c) J.
It is an arrow view.

Reference numeral 2 denotes a main part of the disk reproducing apparatus, which includes a disk rotating unit 3, a disk inserting / ejecting unit 20, a disk detecting unit 6
0, a pickup (not shown) and the like.

Numeral 60 denotes a disk detector for detecting whether or not the disk is staying in the disk transport path. The left slide lever 70, the right slide lever 80, the extension coil spring 48, the left optical sensor 90, the right optical light Sensor 95,
Disk presence / absence switch unit 55 and control unit (not shown)
And the like.

As shown in FIG. 11, the left slide lever 70 has walls 72 and 73 formed vertically upward from both side surfaces of the base portion (bottom surface) 71, and a groove in which the right slide lever 80 is slidably engaged. I'm a type. At the upper end of the wall surface 72, a light-shielding portion 74 that shields light from the right optical sensor 95 outwardly in parallel with the base portion 71, a long hole 75 for assembling with the chassis 12, and the like are formed. The right end portion in the figure has a partially large groove width so that the locking portion 14 of the locking claw 13 erected from the bottom surface of the chassis 12 is inserted. An engaging claw 76 is formed on the wall surface 73 so as to engage with the elongated hole 16 formed in the front portion 15 of the chassis 12 in the lateral direction.
A disk guide 77 is formed at the end of the wall surface 73 extending leftward in the drawing, with which the peripheral edge of the disk abuts. The upper end of the disk guide 77 is engaged with the extension coil spring 48. A portion 78 is formed. Note that a resin material is used as a material of the left slide lever 70 and is formed by molding.

As shown in FIG. 12, the right slide lever 80 has a wall surface 82 formed vertically upward from a base portion (bottom surface) 81, and the right edge of the wall surface 82 is in contact with the peripheral edge of the disk. A guide portion 83 is formed, and a locking portion 84 of the extension coil spring 48 is formed at an upper end portion of the disk guide portion 83. The left side optical sensor 9 extends outwardly in parallel with the base
A light-blocking portion 85 for blocking light of zero, a long hole 86 for assembling with the chassis 12, and the like are formed. The groove width is partially increased so that the stopper 14 is inserted. In addition, an engagement claw 87 is formed on the wall surface 82 so as to engage with the elongated hole 16 formed in the front part 15 of the chassis 12 in the lateral direction. Note that a resin material is used as a material of the right slide lever 80 and is formed by molding.

The left optical sensor 90 and the right optical sensor 95
Are light sensors of the same specification, and the light emitting element 91 and the light receiving element 92
Are integrally formed. Light emitting element 91 and light receiving element 92
Is mounted at a predetermined position on the main board 52 so that the light between the light emitting element 92 and the light receiving element 92 is blocked or received by the movement of the left slide lever 70 and the right slide lever 80. The one mounted on the left side in the figure is the left optical sensor 90, and the one mounted on the right side is the right optical sensor 95.

The disk detector 30 moves the left slide lever 70 and the right slide lever 80 (to follow the outer edge when the disk is conveyed in contact with the left and right slide levers 70, 80). Change of position to change, or 8c
The left optical sensor 90 and the right optical sensor 95 are turned on (light-shielded) and turned off (light receiving) due to a change in position due to a difference between the m disk 5 and the 12 cm disk 6 and a change in position due to improper insertion when the disk is inserted. State)
The state of the disk is detected based on the combination of the ON and OFF states, and the control unit controls the rotation of the drive roller 25 to insert and eject the disk.

Next, the left and right slide levers 70 and 80 and the left and right slide levers 70 and 80 are used.
The positional relationship with the right sensors 90 and 95 will be described.
Left / right slide levers 70, 80 and left / right sensor 90,
The positional relationship with 95 is as follows.

1) The disc is a left / right slide lever 70,
When not hitting 80 (Play, Eject)
The light-shielding portion 85 of the right slide lever 80 blocks the light of the left sensor 90, the left sensor 90 is turned on, and the right sensor 95 receives the light, and is turned off.

2) When the left and right slide levers 70 and 80 are fully opened by the 12 cm disk 6, the light blocking portion 85 of the right slide lever 80 receives the light from the left sensor 90 and is turned off. Further, since the light blocking portion 74 of the left slide lever 70 blocks the light of the left sensor 90 and the right sensor 95, both the left and right sensors 90 and 95 are turned on.

3) When the left and right slide levers 70 and 80 are fully opened by the 8 cm disk 5, the light blocking portion 74 of the left slide lever 70 blocks the light from the right sensor 95 and is turned on. Further, the light blocking portion 85 of the right slide lever 80 receives the light of the left sensor 90 and is turned off. (Both the left and right sensors 90 and 95 are not turned on at the same time.) The reloading and eject processing of the disk staying in the disk transport path of the disk reproducing device 2 are used in the first embodiment. Only the mechanical switch is replaced with an optical sensor, and the processing of FIG. 8 described in the first embodiment can be similarly applied to the present embodiment.

As described above, according to the disk reproducing apparatus according to the second embodiment of the present invention, the left / right optical sensor 90 constituted by the light emitting element 91 and the light receiving element 92 is used for detecting the presence or absence of a disk. , 95, and the left and right slide levers 70, 80 are used, so that, for example, a transmissive disc through which light is transmitted, or aluminum vapor deposition only on the inner periphery (information recording section) of the disc Thus, it is possible to reliably detect a deformed maxi-single disc or the like on which the above-mentioned processing is performed. Therefore, insertion and ejection of the disc can be performed smoothly and reliably.

[0071]

As described above, according to the present invention, various discs used in a disc reproducing apparatus can be detected reliably, so that the quality of disc insertion and ejection can be improved. Further, it is suitable for the standby function of the disk reproducing device, and can save power consumption.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram showing a main part of a disk reproducing device according to a first embodiment of the present invention.

FIG. 2 is a plan view illustrating a schematic configuration of a disk detection unit according to the first embodiment of the present invention.

FIG. 3 is a schematic view of a left slide lever according to the first embodiment of the present invention.

FIG. 4 is a schematic diagram of a right slide lever according to the first embodiment of the present invention.

FIG. 5 is an explanatory diagram of a disk insertion / ejection operation (a plan view showing a state in which a 12 cm disk has been completely inserted).

FIG. 6 is an explanatory view of a disk insertion / ejection operation (a plan view showing a state in which a 12 cm disk is being inserted / ejected).

FIG. 7 is an explanatory view of a disc insertion / ejection operation (a plan view showing a state in which a 12 cm disc is completely ejected).

FIG. 8 is a flowchart showing reloading and eject processing of a 12 cm disk.

FIG. 9 is a schematic configuration diagram showing a main part of a disk reproducing device according to a second embodiment of the present invention.

FIG. 10 is a plan view illustrating a schematic configuration of a disk detection unit according to a second embodiment of the present invention.

FIG. 11 is a schematic view of a left slide lever according to a second embodiment of the present invention.

FIG. 12 is a schematic view of a right slide lever according to a second embodiment of the present invention.

FIG. 13 is a schematic configuration diagram showing a main part of a conventional disk reproducing apparatus.

[Explanation of symbols]

 1, disk reproducing device 3, disk rotating unit 4, disk clamper 5, 8 cm disk 6, 12 cm disk 11, insertion / ejection opening 12, chassis 13, locking claw 14, 39, 44 , 78, 84 ··· Locking part 15 · · · Front part 16, 36, 46, 75, 86 · · · Long hole 20 · · · Disk insertion / ejection part 21 · · · Fixed guide 22 · · · Contact surface 25 · · · Drive roller 26 ··· Rotating shaft 27 ··· Rubber roller part 28 ··· Taper part 30 ··· Disc detection part 31, 70 ··· Left slide lever 32, 41, 71, 81 ··· Base part 33, 34, 42, 72, 73, 82 wall surface 35, 45 switch pressing part 37, 47, 76, 87 engaging claw 38, 43, 77, 83 disk guide part 40, 80 right slide lever 48 tension coil 50 left switch 51 right switch 52 board 55 disk presence switch part 56 disk contact lever 57 switch 58 lever switch pressing lever 74, 85 light blocking part 90 left light Sensor 91 Light emitting element 92 Light receiving element 95 Right optical sensor

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) G11B 19/12 501 G11B 19/12 501A

Claims (12)

[Claims] 1. A disc reproducing apparatus for reproducing information recorded on a disc, comprising: a left and right side provided at a disc insertion slot, wherein a contact portion abuts on a peripheral portion of the disc and the contact portion moves in a direction away from each other. And a biasing means for applying an elastic force to the slide lever in a direction in which the contact portion approaches, and two left and right sides whose output states change according to the moving positions of the left and right slide levers. And a disc state determining means for determining the inserted state of the disc in accordance with the output states of the left and right sensors. 2. The sensor according to claim 1, wherein the left and right sensors are mechanical switches whose connection state changes according to a pressing state of the knob, and the knob is pressed by a pressing portion of the slide lever in accordance with a position of the slide lever. 2. The disc reproducing apparatus according to claim 1, wherein 3. The knob rotates around a rotation fulcrum, and a restoring force is applied in a predetermined direction. When the slide lever moves in a direction pressing the knob, the knob is moved by the knob. The slide lever is provided with an inclination at a contact portion of the knob so that a force is applied in a direction opposite to the rotation direction by the return force, and a rotation fulcrum position of the knob is defined. 3. The disc reproducing apparatus according to claim 2, wherein 4. The left and right sensors are optical sensors formed by a light emitting element and a light receiving element, and an optical path between the light emitting element and the light receiving element is provided at a shielding portion of the slide lever according to a position of the slide lever. 2. The disc reproducing apparatus according to claim 1, wherein the disc reproducing apparatus is shut off. 5. The shape of the slide lever and the position of the sensor may be such that, when a disc is not in contact with the slide lever, one of the first slide levers causes one of the first sensors to be in a first output state and the other has a first output state. The second sensor is in the second output state, and when the disc comes into contact with the first slide lever and the first slide lever moves by a first predetermined amount, the first sensor enters the second state, and the disc is moved to the second slide lever. When the second slide lever contacts the slide lever and the second slide lever moves by a second predetermined amount, the second sensor enters the first state, the disc contacts the second slide lever, and the second slide lever is moved to the second position. 5. The disc reproducing apparatus according to claim 1, wherein the first sensor is set to the first state when the third sensor is moved to a third predetermined amount longer than the fixed amount. 6. The third predetermined amount is smaller than a maximum movement amount of the first slide lever when a large-diameter disk is inserted, and is smaller than a maximum movement amount of the first slide lever when a small-diameter disk is inserted. 6. The disk reproducing apparatus according to claim 5, wherein the distance is set to be larger than the movement amount. 7. A disk presence / absence detection sensor for detecting a state in which a disk is inserted by a predetermined amount or more, wherein said disk state determination means detects a state of the disk based on a detection state of said disk presence / absence detection sensor and an output state of said sensor. 7. The disc reproducing apparatus according to claim 1, wherein a state is determined. And a roller that rotates while being in contact with the disk and conveys the disk. The disk state determination unit determines the state of the disk based on a driving state of the roller and a change in an output state of the sensor. 7. The disc reproducing apparatus according to claim 1, wherein 9. A forcible discharge means for rotating said roller in a direction for discharging a disk when an eject switch for a disk discharge operation is operated regardless of an output state of said sensor. 9. The disc reproducing apparatus according to 8. 10. The disc reproducing apparatus according to claim 9, wherein said forcible ejection means rotates said roller in a direction for ejecting a disc after rotating said roller in an insertion direction. . 11. A forcible ejection means for rotating said roller in a direction for ejecting a disc regardless of an output state of said sensor when an eject switch for disc ejection operation is operated in a disc ejection state, and a disc insertion state. A disk presence / absence detection sensor that detects the state of the disk, and a state where the disk presence / absence detection sensor detects a disk absence state, and the first sensor is in a second output state and the other second sensor is in a first output state. 6. A roller drive inhibiting means for maintaining the roller in a stopped state even when a switch is operated.
The disc reproducing device according to the above. 12. A forcible reinsertion means for rotating said roller in a direction to insert a disc when a reload switch for disc reinsertion is operated, regardless of an output state of said sensor. The disk reproducing device according to claim 1.