JP2006127680A - Recording medium driving device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a recording medium driving device that can be applied with disk-like recording media having different size, and is suitable for reduction in thickness. <P>SOLUTION: A disk feed mechanism 50 is provided within a device body 10 to feed an optical disk 1 inserted into a slot 10A to a turntable 23. In the disk feed mechanism 50, feed rate is decreased in the case of a large optical disk 1, and feed rate is increased in the case of a small optical disk 1. Thus, two types of optical disks 1 having different diameters are fed from the slot 10A to the turntable 23. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention provides a recording medium driving device in which a slot for inserting and ejecting a disk-shaped recording medium is provided in the apparatus main body, and a drive unit for rotationally driving the disk-shaped recording medium is provided in a substantially central portion inside the apparatus main body. About.

Conventionally, as this type of recording medium driving apparatus, a so-called slot-in type disk apparatus that automatically conveys a disk-shaped recording medium to a predetermined processing position when the disk-shaped recording medium is inserted to a predetermined position by a user. It has been known.
In this type of disk device, there are some which can be applied to both a 12 cm disk-shaped recording medium and an 8 cm disk-shaped recording medium.
As a conventional example of a disc apparatus to which two types of disc-shaped recording media of different sizes are applied, a transfer roller for inserting the disc along the disc insertion opening is provided, and the size of the disc diameter is discriminated near the transfer roller. There is a disk reproducing device provided with a central sensor, a right sensor, and a left sensor (Patent Document 1).

  In this Patent Document 1, the transfer roller conveys a disk to a predetermined position while sliding the flat surface of the disk. After the size of the conveyed disk is determined by three types of sensors, It is positioned at a predetermined position by a positioning mechanism having positioning pins provided on the back side.

Japanese Patent Laid-Open No. 2-118955 (refer to pages 3 to 4 and FIGS. 1 to 2)

A thin type is known as this slot-in type disk device, but a 12 cm disk is applied to this type of device, and currently, an apparatus that can also apply an 8 cm disk in addition to a 12 cm disk is available. Absent.
Here, it is conceivable to adopt the configuration of Patent Document 1 for a thin device. However, since Patent Document 1 is not premised on a thin shape, the configuration cannot be directly applied to a thin disk device.
That is, in Patent Document 1, the size of the disk is detected by three types of sensors, the center sensor, the right sensor, and the left sensor, and the transfer amount of the transfer roller is set according to the size of the disk. Since the transfer roller is provided at a position facing the flat surface of the disk, there is a problem that there is a limit to reducing the thickness.
Furthermore, since three types of sensors, the center sensor, the right sensor, and the left sensor are required, a space is required to arrange these sensors, and from this point, there is a problem that the thinning is limited. It is done.

  One of the objects of the present invention is to provide a recording medium driving device that can be applied to disc-shaped recording media of different sizes and is suitable for thinning.

  The invention according to claim 1 is an apparatus main body provided with a slot for inserting and ejecting a disc-shaped recording medium, a drive unit provided inside the apparatus main body and for rotationally driving the disc-shaped recording medium, A disk feeding mechanism provided inside the apparatus main body and for feeding the disk-shaped recording medium inserted into the slot to the drive unit, and this disk feeding mechanism is used for feeding the first disk-shaped recording medium. Is formed so as to reduce the feed amount and to increase the feed amount when feeding the second disc-shaped recording medium having a smaller diameter than the first disc-shaped recording medium. A recording medium driving device.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
In the present embodiment, information reading or recording only may be used as the disk-shaped recording medium. Further, the disk-shaped recording medium is not limited to the optical disk, and any disk-shaped recording medium such as a magnetic disk or a magneto-optical disk can be targeted. Also, for example, a so-called thin slot-in type that is mounted on an electric device such as a portable personal computer is exemplified. However, for example, a game machine or a playback device that performs processing for recording and playback such as video data recording It may be a single configuration.

(Disk unit configuration)
FIG. 1 is a plan view showing a schematic configuration of a recording medium driving apparatus according to the present embodiment.
In FIG. 1, the recording medium driving device of the present embodiment is a so-called thin slot-in type disk device that is mounted on an electric device such as a portable personal computer. This disk device is a reading process or recording surface that is information processing for reading information recorded on a recording surface (not shown) provided on at least one surface of a disc-shaped optical disk 1 as a disk-shaped recording medium that is detachably mounted. Recording processing, which is information processing for recording various types of information, is performed.
The disk device includes a substantially box-shaped device body 10 made of, for example, metal and having an internal space.

Inside the apparatus main body 10, there are provided a disk processing unit 20 called a so-called traverse mechanism, a transport means 30 for transporting the optical disk 1, and a control circuit unit (not shown), and the optical disk 1 is inserted in front of it. A slot 10A for discharging is formed extending in the left-right direction in FIG.
The disk processing unit 20 has a pedestal portion 21 that is formed in a substantially plate shape, for example, with a metal plate and is supported on the apparatus main body 10 so that one end thereof is swingable.
The pedestal 21 is provided with a disk rotation driving means 22 located on one end side in the longitudinal direction near the periphery. The disk rotation driving means 22 includes a spindle motor (not shown) and a turntable 23 provided integrally with the output shaft of the spindle motor. The spindle motor is controllably connected to the control circuit unit and is driven by electric power supplied from the control circuit unit.
The turntable 23 is a drive unit that is provided at a substantially central portion inside the apparatus main body 10 and that rotationally drives the optical disc 1.

An information processing unit (not shown) is disposed on the pedestal unit 21, and this information processing unit is supported in a state of being bridged between a pair of guide shafts (not shown) and is moved by a moving mechanism (not shown). The processing unit is moved close to and away from the turntable 23.
The information processing unit includes a pickup having a light source, a lens that converges light from the light source, and an optical sensor (not shown) that detects outgoing light reflected by the optical disc 1.
A cover body 21 </ b> A is integrally attached to the pedestal portion 21. In the cover body 21A, a long processing opening 21B is formed in a substantially central portion along the longitudinal direction of the pedestal portion 21 so as to correspond to the moving path of the pickup and the position of the turntable 23.

The transport unit 30 includes a transport motor (not shown) disposed in the apparatus main body 10 and whose operation is controlled by, for example, a control circuit unit, and a link mechanism unit 31 that is interlocked by driving the transport motor.
The link mechanism section 31 is provided inside the apparatus main body 10 and on one end side (left side in FIG. 1) of the slot 10A. The link mechanism section 31 is provided inside the apparatus main body 10 and the other end section of the slot 10A. A disc diameter detecting mechanism 42 provided on the side (right side in FIG. 1), a disc ejecting mechanism 43 for ejecting the optical disc 1 disposed on the turntable 23, a first drive cam 44 for swinging the pedestal 21, and And a second drive cam 45.

  Each of the first drive cam 44 and the second drive cam 45 is formed with an engagement protrusion, and these engagement protrusions are formed in cam grooves (not shown) formed on the two side surfaces of the base portion 21. Each is engaged. The first drive cam 44 and the second drive cam 45 are formed in a substantially long shape, and are advanced and retracted along the longitudinal direction by a motor and gear mechanism (not shown). As a result, the pedestal 21 is swung so as to be close to and away from the recording surface of the optical disc 1 mounted on the turntable 23.

The disc guide mechanism 41 is disposed at a predetermined distance from each other, and has two first links 411 each having one end rotatably supported by the apparatus body 10 and the other ends of the first links 411. And a second link 412 for connecting the optical disk 1 and the optical disk 1 to the other end side (the right side in FIG. 1) of the slot 10A.
The first link 411 and the second link 412 are arranged in a plane orthogonal to the rotation axis of the turntable 23.
One of the two first links 411 is arranged on the slot 10A side, and the other one is arranged on the back side. The remaining one first link 411 includes a pin 411A, and the pin 411A is movable along an arcuate guide portion 10B formed in the apparatus main body 10.

These first links 411 are parallel to each other, and a connection position with the second link 412 is formed at a position away from the rotation fulcrum by the same dimension. For this reason, the second link 412 is arranged close to or away from the turntable 23.
A spring (not shown) is interposed between one of the two first links 411 and the apparatus main body 10, and the first link 411 is always rotated clockwise by the spring force of the spring. The second link 412 is biased in the direction approaching the turntable 23.
In the vicinity of the connecting portion between the first link 411 and the second link 412 arranged on the slot 10A side, a contact portion 41A that contacts the peripheral portion of the optical disc 1 is provided.

When the optical disk 1 inserted into the slot 10A is a large-diameter first disk-shaped recording medium, the disk diameter detection mechanism 42 moves the disk guide mechanism 41 backward so that the optical disk 1 is more than the first disk-shaped recording medium. In the case of a small-diameter second disk-shaped recording medium, the disk guide mechanism 41 is advanced.
Specifically, the disc diameter detection mechanism 42 has an arm 421 whose one end abuts the optical disc 1 and whose other end is rotatable with respect to the apparatus main body 10, and the arm 421 connected to the arm 421. An arm link mechanism 422 that allows the disc guide mechanism 41 to move backward when the angle is large and prevents the disc guide mechanism 41 from moving backward when the rotation angle of the arm 421 is small.

One end of the arm 421 is provided with a roller-like contact portion 421A that contacts the peripheral edge of the optical disc 1, and the other end is rotatably supported by the apparatus main body 10. The arm 421 is formed of an elongated rectangular plate member, and a guide groove 421B is formed along the longitudinal direction thereof.
The arm link mechanism 422 includes a substantially flat connecting member 423 provided at one end thereof with a protrusion 423A guided in the guide groove 421B, and a substantially flat plate-shaped rotation preventing member connected to the connecting member 423 and one end thereof. And a link 424.
The arm 421 and the connecting member 423 are at positions facing the disk guide mechanism 41 with the turntable 23 interposed therebetween, and are disposed in substantially the same plane as the plane on which the disk guide mechanism 41 is disposed.

The connecting member 423 is rotatably supported on the other end side with respect to the rotating shaft 423B fixed to the apparatus main body 10, and the engaging portion 423C is located at a position facing the protrusion 423A across the rotating shaft 423B. Is formed on the connecting member 423.
The rotation-preventing link 424 is disposed so as to be movable in the left-right direction in the drawing on the back side from the turntable 23, and the right end portion thereof can be engaged with the engaging portion 423C. A stopper portion 424A that can contact the pin 411A of the first link 411 is formed at the left end portion of the rotation prevention link 424.
When the rotation prevention link 424 is located on the left side in the drawing, the stopper portion 424A is located on the movement locus along the guide portion 10B of the pin 411A of the first link 411 (see FIG. 2). When the movement-preventing link 424 is located on the right side in the figure, it is located at a location deviating from the movement locus of the pin 411A of the first link 411.

Therefore, in this embodiment, when the optical disk 1 having a large diameter (for example, 12 cm) is inserted from the slot 10A, the arm 421 is largely rotated counterclockwise by being pushed by the optical disk 1, and accordingly The connecting member 423 also largely rotates counterclockwise (see FIG. 4). As the connecting member 423 rotates greatly, the rotation prevention link 424 moves to the right side in FIG. 1, the stopper 424A deviates from the movement locus of the pin 411A, and the disk guide mechanism 41 is allowed to move backward (see FIG. 5).
On the other hand, when the optical disk 1 having a small diameter (for example, 8 cm) is inserted, the arm 421 pushed by the optical disk 1 is rotated counterclockwise and accordingly, the connecting member 423 is also counteracted small. Rotate clockwise. Even if the connecting member 423 rotates, the amount of rotation is small, so the rotation preventing link 424 remains positioned on the left side in FIG. 1, and the stopper portion 424A is positioned on the movement locus of the pin 411A (FIG. 10). If the optical disc 1 is continuously inserted in this state, as shown in FIG. 2A, the second link 412 moves to a predetermined position in a direction away from the turntable 23 (the disc guide mechanism 41 moves backward). When the predetermined position is reached, as shown in FIG. 2B, the pin 411A comes into contact with the stopper portion 424A, and the movement of the second link 412 is prevented.

Returning to FIG. 1, in the present embodiment, the arm 421, the connecting member 423, the first drive cam 44 that is connected to the other end portion of the connecting member 423 and driven to advance and retreat, and the optical disc 1 from the slot 10A at a predetermined position. The disc feed mechanism 50 is configured to include a switch that detects that the disc has been pushed into the disc. This switch includes eject arms 611 and 612, which will be described later. When these eject arms 611 and 612 are rotated by pushing the optical disc 1, the first drive cam 44 is moved forward.
When the disc feeding mechanism 50 detects that the optical disc 1 has been pushed into a predetermined position with a switch, the disc feeding mechanism 50 pushes the optical disc 1 inward with an arm 421 and feeds it to the turntable 23.

When the optical disk 1 is large, the connecting member 423 and the first drive cam 44 reduce the feed amount of the optical disk 1 to be sent to the turntable 23, and when the optical disk 1 is small, the optical disk 1 to be sent to the turntable 23 A disc feed cam 51 for increasing the feed amount is provided.
The disc feeding cam 51 includes a protrusion 52 provided on the connecting member 423 and a cam groove 53 that is engaged with the protrusion 52 and formed in the first drive cam 44.

FIG. 3 shows the detailed structure of the cam groove 53.
In FIG. 3, the cam groove 53 includes a first cam groove 53A for feeding a large optical disk 1, a second cam groove 53B for feeding a small optical disk 1, and the first cam groove 53A and the second cam groove 53B. And a common cam groove 53C joined at one end thereof.
The first cam groove 53A and the second cam groove 53B are formed to extend in the moving direction of the first drive cam 44, respectively. In order to change the amount of rotation of the arm 421, the path of the second cam groove 53B is longer than that of the first cam groove 53A.

  Each of the first cam groove 53A and the second cam groove 53B has a curved portion 53D formed on the other end side. When the protruding portion 52 is guided to the curved portion 53D, the arm 421 is interposed via the connecting member 423. Is separated from the optical disc 1. In the present embodiment, when the turntable 23 is rotationally driven, the first drive cam 44 is at the most advanced position, and at this position, the curved portion 53D of the first cam groove 53A or the curved portion of the second cam groove 53B. The protrusion 52 is guided by the portion 53D, and the disc feeding mechanism 50 is separated from the optical disc 1. Similarly, when the turntable 23 is rotationally driven, the disc guide mechanism 41 is at the most retracted position and is separated from the optical disc 1.

  Returning to FIG. 1, the disc ejection mechanism 43 includes a first disc delivery mechanism 61 provided on the inner side of the inside of the apparatus main body 10, and a first disc delivery mechanism arranged on the slot side of the first disc delivery mechanism 61. And a second disk delivery mechanism for delivering the optical disk 1 delivered at 61 to the slot 10A. In the present embodiment, the second disk feed mechanism is a disk guide mechanism 41.

The first disk delivery mechanism 61 includes a pair of eject arms 611 and 612 each having one end portion rotatably supported via a rotation shaft 613 inside the apparatus main body 10. The first drive cam 44 and the second drive cam 45 are rotated in accordance with the advance / retreat operation.
These eject arms 611 and 612 are arranged so as to sandwich the turntable 23 so as to sandwich the peripheral edge of the optical disc 1, and a roller-like contact portion 61 </ b> A that comes into contact with the peripheral edge of the optical disc 1 is provided at the tip thereof. Each is provided.

Between the eject arms 62 and 63 and the first drive cam 44 and the second drive cam 45, the eject arms 611 and 612 are moved in accordance with the advance and retreat of the first drive cam 44 and the second drive cam 45. A cam mechanism for performing the above operations is provided.
The cam mechanism allows the distal ends of the eject arms 611 and 612 to be opened when the optical disc 1 is pushed from the slot 10A, and when the turntable 23 is driven to rotate, the distal ends are set to the most opened positions. To be separated from the optical disc 1.
Since the disk guide mechanism 41 has a structure in which the first link 411 on the slot 10A side rotates in the clockwise direction, the contact portion 41A functions as a second disk feeding mechanism by pushing out the peripheral edge of the optical disk 1.
The rotation preventing link 424 is formed with grooves and notches at appropriate locations for preventing interference with the eject arms 611 and 612.

(Disk unit operation)
Next, the operation of the disk device in this embodiment will be described.
First, an operation for inserting / ejecting the optical disk 1 having a large diameter (12 cm) into the disk device will be described with reference to FIGS.
As shown in FIG. 1, when a large-diameter optical disc 1 is pushed into the disc device from the slot 10A by a human hand, the peripheral portion of the optical disc 1 moves the disc diameter detecting mechanism 42 as shown in FIG. The abutting portion 421A of the arm 421 that constitutes it is largely rotated and the abutting portion 41A of the disc guide mechanism 41 is pushed. As a result, the connecting member 423 rotates together with the arm 421 so that the protrusion 52 of the connecting member 423 located on the common cam groove 53C of the first drive cam 44 moves toward the first cam groove 53A. . Further, when the connecting member 423 is largely rotated, the rotation preventing link 424 is moved in the right direction in the figure, and the stopper portion 424A formed at the left end portion of the rotation preventing link 424 is a disc guide. The pin 411A of the mechanism 41 will deviate from the movement trajectory.

Further, when the optical disk 1 is continuously pushed in, as shown in FIG. 5, the disk guide mechanism 41 is deformed, the second link 412 is largely retracted from the turntable 23, and the large optical disk 1 enters the inside of the apparatus. Further, the peripheral edge portion of the optical disc 1 comes into contact with the contact portion 61A of the eject arms 611 and 612.
When the optical disk 1 is continuously pushed in, as shown in FIG. 6, the contact portions 61A of the eject arms 611 and 612 are separated from each other and the optical disk 1 is sandwiched. When the optical disk 1 is inserted into the apparatus by more than half, a switch (not shown) is operated as the eject arms 611 and 612 are rotated, and the disk feed mechanism 50 is operated as the switch is operated.

Then, the first drive cam 44 moves forward, and the protrusion 52 moves along the first cam groove 53 </ b> A formed in the first drive cam 44. As a result, the connecting member 423 provided with the protrusion 52 rotates in the clockwise direction, and accordingly, the arm 421 rotates in the same direction and pushes the optical disc 1 toward the turntable 23. As shown in FIG. 7, the arm 421 rotates until the center of the optical disc 1 is positioned on the turntable 23.
As shown in FIG. 8, when the optical disk 1 is pushed to the turntable 23 by the arm 421, the protrusion 52 is guided by the curved portion 53D formed at the end of the first cam groove 53A, and the arm 421 rotates in the reverse direction. The contact portion 421A moves away from the peripheral edge of the optical disc 1. Further, the eject arms 611 and 612 and the disc guide mechanism 41 are also separated from the optical disc 1 so that the rotation of the optical disc 1 is not hindered.
When the center of the optical disc 1 is positioned on the turntable 23, the pedestal portion 21 comes close to the recording surface of the optical disc 1 by the movement of the first drive cam 44 and the second drive cam 45, and the turntable 23. On the other hand, the optical disk 1 is clamped. In this state, the turntable 23 rotates and information is recorded and / or reproduced on the optical disc 1.

In order to eject the optical disk 1 from the disk device, first, the first drive cam 44 and the second drive cam 45 are moved in the opposite direction to the above, and the pedestal 21 is separated from the recording surface of the optical disk 1.
Further, the first disk delivery mechanism 61 is operated. Then, the eject arms 611 and 612 rotate to push the peripheral edge of the optical disc 1 toward the slot 10A. In this state, the disc guide mechanism 41 is retracted from the turntable 23, and the tip portion 421A of the arm 421 remains largely rotated.
As shown in FIG. 9, when the optical disk 1 is ejected from the slot 10A by about half or more by the eject arms 611 and 612, the eject arms 611 and 612 cannot push the optical disk 1, but the disk that is the second disk delivery mechanism. The guide mechanism 41 operates and the optical disc 1 is completely ejected from the slot 10A. That is, the first link 411 is rotated clockwise by the biasing force of the spring, so that the contact portion 41A pushes the peripheral portion of the optical disc 1.

Next, an operation for inserting / ejecting the optical disk 1 having a small diameter (8 cm) into / from the disk device will be described with reference to FIGS.
As shown in FIG. 10, when a small-diameter optical disk 1 is pushed in by a human hand from the slot 10A toward the inside of the disk device, the peripheral portion of the optical disk 1 becomes the contact portion of the arm 421 as shown in FIG. 421A is rotated in a small counterclockwise direction and the contact portion 41A of the disc guide mechanism 41 is pushed. Thereby, since the moving amount of the connecting member 423 that rotates together with the arm 421 is small, the protrusion 52 located on the common cam groove 53C of the first drive cam 44 remains on the second cam groove 53B side. Further, since the rotation amount of the connecting member 423 is small, the movement of the rotation prevention link 424 in the right direction in the drawing is extremely small, and the stopper portion 424A formed at the left end of the rotation prevention link 424 is a disk guide mechanism. It will be located on the movement locus | trajectory of 41 pins 411A (refer FIG. 2).

As shown in FIG. 11, when the optical disc 1 is continuously pushed in, the disc guide mechanism 41 is deformed. However, when the pin 411A comes into contact with the stopper portion 424A of the rotation preventing link 424, the disc guide mechanism 41 is further deformed. No longer. If the optical disk 1 is continuously pushed in this state, the optical disk 1 comes into contact with the contact portions 61A of the eject arms 611 and 612.
When the optical disk 1 is inserted into the apparatus by more than half, a switch (not shown) is operated as the eject arms 611 and 612 are rotated, and the disk feed mechanism 50 is operated as the switch is operated.

  Then, the first drive cam 44 moves forward, and the protrusion 52 moves along the second cam groove 53 </ b> B formed in the first drive cam 44. As a result, the connecting member 423 provided with the protrusion 52 is largely rotated in the clockwise direction, and accordingly, the arm 421 is rotated in the same direction to push the optical disc 1 toward the turntable 23. . Since the protrusion 52 moves along the second cam groove 53B, the amount of rotation of the arm 421 is larger than that of the large disk 1 described above. As shown in FIG. 12, the arm 421 rotates until the center of the optical disk 1 is positioned on the turntable 23.

  As shown in FIG. 13, when the optical disk 1 is pushed to the turntable 23 by the arm 421, the protrusion 52 is guided by the curved portion 53D formed at the end of the second cam groove 53B, and the arm 421 rotates in the reverse direction. The contact portion 421A moves away from the peripheral edge of the optical disc 1. Further, as described above, the eject arms 611 and 612 and the disc guide mechanism 41 are also separated from the optical disc 1 and the optical disc 1 is not inhibited from rotating.

In order to eject the optical disk 1 from the disk device, the first disk delivery mechanism 61 is operated as described above. That is, as shown in FIG. 14, by rotating the eject arms 611 and 612, the peripheral edge of the optical disc 1 is pushed out toward the slot 10A.
When the optical disk 1 is ejected from the slot 10A by approximately half or more by the eject arms 611 and 612, the eject arms 611 and 612 cannot push the optical disk 1, but the first link 411 of the disk guide mechanism 41 is caused by the biasing force of the spring. By rotating clockwise, the contact portion 41A pushes the peripheral edge of the optical disc 1.

(Effect of disk unit)
As described above, in the present embodiment, the following operational effects can be achieved.
(1) The disk device of this embodiment includes a disk feeding mechanism 50 that is provided inside the apparatus main body 10 and feeds the optical disk 1 inserted into the slot 10A to the tar table 23. The disk feeding mechanism 50 includes the optical disk 1 Since the feed amount is reduced when it is large, and the feed amount is increased when the optical disc 1 is small, two types of optical discs 1 having different diameters of 12 cm and 8 cm can be sent from the slot 10A to the turntable 23. it can. Therefore, the optical disk 1 having a different size can be turned from the slot 10A without providing a pair of rollers across the front and back surfaces of the optical disk 1 and without providing switches for determining the diameter of the optical disk 1. It can be sent to table 23.

(2) The disc feed mechanism 50 includes an arm 421 whose one end abuts the optical disc 1 and whose other end is rotatable, a connecting member 423 whose one end is connected to the arm 421, and the connecting member. A first drive cam 44 that is connected to the other end of 423 and drives to advance and retreat. When the optical disk 1 is large, the rotation amount of the arm 421 is reduced between the connection member 423 and the first drive cam 44, When the optical disk 1 is small, the disk feeding cam 51 is provided to increase the amount of rotation of the arm 421. Therefore, the diameter of the optical disk 1 is determined by the rotation angle of the arm 421, and based on this determination. Then, the connecting member 423 and the first drive cam 44 are moved relative to each other by the disc feeding cam portion 51. Therefore, even if the diameter of the optical disk 1 is different, the optical disk 1 can be accurately sent to the turntable 23 by a simple means called a cam according to the diameter.

(3) The disc feeding cam portion 51 includes a protrusion 52 provided on the connecting member 423 and a cam groove 53 that is engaged with the protrusion 52 and formed in the first drive cam 44. Since the groove 43 includes a first cam groove 53A for feeding the large optical disk 1 and a second cam groove 53B for feeding the small optical disk 1, a plurality of cam grooves are formed on the first drive cam 44. And the disk feeding cam portion 51 can be configured with a simple structure in which the projection 52 is provided on the connecting member 423. Therefore, the cost for manufacturing the disc feeding cam portion 51 can be reduced.

(4) Since the common cam groove 53C is formed in the first drive cam 44 at a portion where the first cam groove 53A and the second cam groove 53B are joined, the protrusion 52 is formed in the first cam. The first cam groove 53A and the second cam groove 53B can be smoothly switched by engaging with the common cam groove 53C before switching to either the groove 53A or the second cam groove 53B. it can.

(5) The disk device includes a disk guide mechanism 41 provided on one end side of the slot 10A inside the apparatus main body 10 and capable of moving forward or backward toward the other end side of the slot 10A. Since the disk guide mechanism 41 is configured to move backward when the optical disk 1 inserted into the slot 10A is large and move forward when the optical disk 1 is small, the disk guide mechanism 41 and the disk guide mechanism 41 are arranged on both sides of the slot 10A. With the mechanism 50, the optical disk 1 can be centered according to the diameter. Therefore, the optical disc 1 having a different size can be thinned without providing a pair of rollers across the front and back surfaces of the optical disc 1 and without providing switches for determining the diameter of the optical disc 1. It can be applied to the device.

(6) Since the first drive cam 44 also serves as a drive cam for moving the turntable 23 close to and away from the optical disk 1, the number of parts can be reduced, and the disk device can be reduced in size and cost. Can be achieved.

(7) Since the connecting member 423 is formed in a substantially flat plate shape, the disk device can be thinned.

(8) Since the projection 423A is formed on the connecting member 423 and the guide groove 421B for guiding the projection 423A is formed on the arm 421, the arm 421 can be reliably rotated with a simple structure of the projection 423A and the guide groove 421B. Can be transmitted to the connecting member 423.

(9) Since the roller-shaped contact portion 421A is provided at the tip of the arm 421, even if the optical disc 1 is pushed from the slot 10A with a strong force, the contact portion 421A that contacts the optical disc 1 rotates. There is no damage to the peripheral edge.

(10) Since the disc guide mechanism 41 is always urged in the direction of advancement, it is not necessary to employ a structure that greatly advances the disc guide mechanism 41 when inserting the optical disc 1 having a small diameter. Becomes simple.

(11) The disc guide mechanism 41 is disposed at a predetermined distance from each other, and one end of each of the disc guide mechanisms 41 is rotatably supported by the apparatus main body 10, and in addition to these first links 411 Since the end portions are connected to each other and the first link 411 is provided with the second link 412 that moves closer to and away from the turntable 23 as the first link 411 rotates, the optical disks 1 having different diameters can be guided with a simple configuration called a parallel link. Can do.

(12) Since the disk diameter detection mechanism 42 includes the rotation prevention link 424 that prevents the rotation of the first link 411, the disk guide mechanism 41 is reliably prevented from moving backward by a simple means called the rotation prevention link 424. can do.

(13) An abutting portion 41A that abuts on the optical disc 1 is provided in the vicinity of the connecting portion between the first link 411 and the second link 412. Since the vicinity of the connecting portion between the first link 411 and the second link 412 is a place where the optical disk 1 is likely to come into contact when the optical disk 1 is inserted from the slot 10, the first link 411 and the first link 411 and The disk guide mechanism 41 can be reliably operated by smoothly deforming the parallel link including the second link 412.

(14) The disc guide mechanism 41 and the disc diameter detection mechanism 42 are configured to be separated from the optical disc 1 when the turntable 23 is driven to rotate, so that information is recorded on the recording surface of the optical disc 1. In addition, the disc guide mechanism 41 and the disc diameter detection mechanism 42 do not interfere with each other during reproduction.

(15) The disk device includes a switch for detecting that the optical disk 1 has been pushed into a predetermined position from the slot 10A, and the arm 421 pushes the optical disk 1 inward by the detection of this switch. The mechanism 42 can be operated at an appropriate timing.

(16) Since the arm 421 and the disk guide mechanism 41 are arranged in a plane on which the optical disk 1 is arranged, the thickness reduction of the disk device can also be achieved from this point.

(17) Since the disk guide mechanism 41, the arm 421, the connecting member 423, and the rotation prevention link 424 are disposed so as to surround the turntable 23, the disk apparatus can be reasonably disposed without waste. Can be reduced in size.

(18) The disk device according to the present embodiment includes a disk discharge mechanism 43 that discharges the optical disk 1 disposed on the turntable 23 toward the slot 10A. A first disk delivery mechanism 61 provided on the first disk delivery mechanism 61, and a second disk delivery mechanism that is disposed closer to the slot 10A than the first disk delivery mechanism 61 and delivers the optical disk 1 delivered by the first disk delivery mechanism 61 to the slot 10A. Since the small optical disk 1 is transferred from the turntable 23 to the slot 10A and discharged to the outside by the first disk feeding mechanism 61 and the second disk feeding mechanism respectively provided at the back side and the entrance side of the slot 10A. Without a pair of rollers across the front and back of 1 Also, moreover, without providing a switches to determine the size of the diameter of the optical disc 1, it is possible to discharge the small optical disk 1 from the slot 10A to the outside.

(19) Since the second disk delivery mechanism also serves as the disk guide mechanism 41, the number of parts can be reduced, and the disk device can be reduced in size and cost.

(20) The first disc delivery mechanism 61 is configured to include eject arms 611 and 612 having one end rotatably supported inside the apparatus body 10 and the other end abutting against the peripheral edge of the optical disc 1. . Therefore, since the optical disk 1 can be easily sent to the slot 10A side by turning about one end of the eject arms 611 and 612, the structure of the first disk delivery mechanism 61 can be simplified. .

(21) Since the eject arms 611 and 612 are provided with roller-shaped contact portions 61A that contact the peripheral edge of the optical disc 1 at their distal ends, the contact portions 421A that contact the optical disc 1 even when the optical disc 1 is pushed from the slot 10A. Is rotated, so that the peripheral edge of the optical disk 1 is not damaged.

(22) Since a pair of eject arms 611 and 612 are provided across the turntable 23, a force is applied to the left and right of the optical disc 1, so that the optical disc 1 can be sent straight toward the slot 10A.

[Modification of Embodiment]
In addition, this invention is not limited to each embodiment mentioned above, The deformation | transformation shown below is included in the range which can achieve the objective of this invention.

For example, in the above embodiment, the disk feeding mechanism 50 is configured to detect the size of the optical disk 1 by the arm 421 whose one end abuts the optical disk 1 and whose other end is rotatable. However, the present invention is not limited to this configuration. For example, a rod that can move forward and backward along the slot 10A may be provided, and a means for interlocking the forward and backward movement of the rod via a cam mechanism or the like may be employed.
Further, it is not always necessary to provide the disk guide mechanism 41, and even if it is provided, it is not limited to the configuration of the above embodiment. For example, in the above-described embodiment, the disk guide mechanism 41 is always urged in the direction of forward movement. However, in the present invention, a configuration may be adopted in which the disk guide mechanism 41 is advanced and retracted by separately providing a motor and a gear mechanism.

Further, the disk guide mechanism 41 is not limited to the configuration of a parallel link including two first links 411 and one second link 412. For example, a coil spring is directly connected to both ends of the second link 412. The structure which connects may be sufficient.
Further, in the present invention, it is not always necessary to provide the disk ejection mechanism 43. Even if the disc ejection mechanism 43 is provided, the disc guide mechanism 41 may be provided separately from the second disc delivery mechanism, unlike the embodiment.

Moreover, although two types of 8 cm and 12 cm have been illustrated as the optical discs 1 having different sizes, the present invention can be applied to three or more types of optical discs 1.
In addition, the specific structure and procedure for carrying out the present invention can be appropriately changed to other structures and the like within a range in which the object of the present invention can be achieved.

[Effect of the embodiment]
As described above, the apparatus main body 10 provided with the slot 10A for inserting and ejecting the optical disk 1, the turntable 23 provided at the substantially central portion of the apparatus main body 10 and rotating the optical disk 1, and the apparatus A disc feed mechanism 50 is provided inside the main body 10 and feeds the optical disc 1 inserted into the slot 10A to the tar table 23. The disc feed mechanism 50 reduces the feed amount when the optical disc 1 is large. Since the feeding amount is increased when the distance is small, two types of optical disks 1 having different diameters of 12 cm and 8 cm can be fed from the slot 10A to the turntable 23. Therefore, the optical disk 1 having a different size can be turned from the slot 10A without providing a pair of rollers across the front and back surfaces of the optical disk 1 and without providing switches for determining the diameter of the optical disk 1. It can be sent to table 23.

1 is a plan view illustrating a schematic configuration of a recording medium driving device according to an embodiment of the present invention. It is the schematic which shows the relationship between the link for rotation prevention, and the 1st link, (A) shows just before the 1st link interferes with the link for rotation prevention, (B) is for rotation prevention It shows immediately after the first link interferes with the link. It is a top view which shows the detailed structure of a cam groove. It is a figure equivalent to FIG. 1 explaining the operation | movement of the said embodiment, applying a big optical disk. It is a figure equivalent to FIG. 1 explaining the operation | movement of the said embodiment. It is a figure equivalent to FIG. 1 explaining the operation | movement of the said embodiment. It is a figure equivalent to FIG. 1 explaining the operation | movement of the said embodiment. It is a figure equivalent to FIG. 1 explaining the operation | movement of the said embodiment. It is a figure equivalent to FIG. 1 explaining the operation | movement of the said embodiment. It is a figure equivalent to FIG. 1 explaining the operation | movement of the said embodiment, applying a small optical disk. It is a figure equivalent to FIG. 1 explaining the operation | movement of the said embodiment. It is a figure equivalent to FIG. 1 explaining the operation | movement of the said embodiment. It is a figure equivalent to FIG. 1 explaining the operation | movement of the said embodiment. It is a figure equivalent to FIG. 1 explaining the operation | movement of the said embodiment.

Explanation of symbols

1 ... Optical disc (disc-shaped recording medium)
DESCRIPTION OF SYMBOLS 10 ... Main body 10A ... Slot 23 ... Turntable (drive part)
41. Disc guide mechanism (second disc feed mechanism)
41A ... contact portion 411 ... first link 412 ... second link 42 ... disk diameter detection mechanism 421 ... arm 421A ... contact portion 421B ... guide groove 422 ... arm link mechanism 423 ... coupling member 423A ... projection 424 ... rotation prevention Link 424A ... Stopper 43 ... Disc Ejection Mechanism 44 ... First Drive Cam 45 ... Second Drive Cam 50 ... Disc Feeding Mechanism 51 ... Disc Feeding Cam Part 52 ... Protrusion 53 ... Cam Groove 53A ... First Cam Groove 53B ... second cam groove 53C ... common cam groove 53D ... curved portion 60 ... disc ejection mechanism 61 ... first disc delivery mechanism 61A ... contact portion 611, 612 ... eject arm

Claims (7)

An apparatus main body provided with a slot for inserting and discharging a disk-shaped recording medium;
A drive unit provided inside the apparatus main body and for rotationally driving the disk-shaped recording medium;
A disk feed mechanism provided inside the apparatus main body, for feeding the disk-shaped recording medium inserted into the slot to the drive unit;
The disk feeding mechanism reduces the feeding amount when feeding the first disk-shaped recording medium, and moves the second disk-shaped recording medium having a smaller diameter than the first disk-shaped recording medium. Formed to increase the feed amount,
A recording medium driving apparatus characterized by the above. The recording medium driving device according to claim 1,
The disk feeding mechanism includes an arm whose one end is in contact with the disk-shaped recording medium and whose other end is rotatable, a connecting member having one end connected to the arm, and the other end of the connecting member A drive cam that is connected to the unit and is driven forward and backward,
When the first disk-shaped recording medium is fed, the connecting member and the driving cam reduce the amount of rotation of the arm, and when the second disk-shaped recording medium is fed, the arm of the arm A disc feed cam portion is provided to increase the amount of rotation,
A recording medium driving apparatus characterized by the above. The recording medium driving device according to claim 2,
The disk feeding cam portion includes a protrusion provided on the connecting member, and a cam groove formed in the drive cam that is engaged with the protrusion, and the cam groove is the first disk-shaped recording. A first cam groove for feeding a medium and a second cam groove for feeding the second disc-shaped recording medium;
A recording medium driving apparatus characterized by the above. The recording medium driving device according to claim 3,
A common cam groove formed by joining the first cam groove and the second cam groove is formed in the drive cam;
A recording medium driving apparatus characterized by the above. The recording medium driving device according to any one of claims 2 to 4,
The drive cam doubles as a drive cam for moving the drive unit close to and away from the disk-shaped recording medium.
A recording medium driving apparatus characterized by the above. The recording medium driving device according to any one of claims 1 to 5,
The connecting member is formed in a substantially flat plate shape,
A recording medium driving apparatus characterized by the above. The recording medium driving device according to any one of claims 2 to 6,
A protrusion is formed on one of the arm and the connecting member, and a guide groove for guiding the protrusion is formed on the other of the arm and the connecting member.
A recording medium driving apparatus characterized by the above.

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