JP2009163813A - Disk playback device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem that it is necessary to stop a disk moved to a playback position. <P>SOLUTION: This disk playback device comprises: a disk loading means which holds a rim of the disk so as to convey the disk which is inserted in a disk insertion slot of the disk playback device between an eject position and a playback position where a part of the disk is exposed to outside; and a stopper which is arranged at a position where the disk is to be positioned after moving further in the loading direction from the position where the disk rim is positioned when the disk has moved from an eject position to a playback position and the position is located orthogonal to the moving locus of the center of the disk, and which is brought into contact with the rim of the disk to move the disk to the direction orthogonal to the loading direction. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a disk transfer device for transferring a disk from an eject position to a reproduction position.

  As a loading mechanism for transporting a disc-shaped disk such as a CD or DVD from an eject position to a reproduction position, a disk transport mechanism that sandwiches the recording surface of the disk and the periphery of the disk has been proposed.

  After the disk is transferred to the reproduction position by the loading mechanism, a stopper may be fixedly disposed on the chassis in order to stop the disk at the reproduction position, and the stopper may be positioned by contacting the peripheral edge of the disk.

  However, in the case of this configuration, the disk is pressed against the stopper in a state where the driving force is applied to the disk, so that the disk is stressed.

  In order to solve the above-described problems, the present invention is to transfer a disc inserted into a disc insertion slot of a disc reproducing apparatus between an ejecting position and a reproducing position where a part of the disc is exposed to the outside. A disc loading means for sandwiching the periphery of the disc, and a position where the disc has moved further in the loading direction than the position where the disc periphery is located at the position where the disc has moved from the eject position to the reproduction position, and the movement of the center of the disc The stopper is disposed at a position moved in a direction orthogonal to the trajectory, abuts against the peripheral edge of the disk, and generates a moving force in the direction orthogonal to the loading direction on the disk.

  According to the present invention, when the disk comes into contact with the stopper, a force that moves the disk in a direction orthogonal to the loading direction is generated, and this force separates the reading means from the peripheral edge of the disk. As a result of automatically eliminating the driving force, the disc can be automatically stopped near the reproduction position.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of the invention will be described with reference to the accompanying drawings.

  Examples of the present invention will be described below. 1 and 2 are a front view and a rear view of the device of the present invention, respectively, and the outer casing 20 is indicated by a broken line to show the internal structure. A slit-like disc insertion slot 2 (not shown) for inserting a disc is provided on the upper surface of the disc reproducing apparatus 1. The drive roller 3 formed with a V-groove that abuts the periphery of the disk inserted into the disk insertion slot 2 is pivotable at the tip of the first pivot arm 5 that can pivot about the axis 4. There are 6 branches. Further, in order to sandwich the disk together with the drive roller 3 and to transport the disk, a second rotating arm 9 that can rotate about a shaft 8 is similarly a non-rotating fixed roller 7 having a V-groove formed around it. It is being fixed to the axis | shaft 10 provided in the front-end | tip.

  As shown in FIG. 2, the shafts 6 and 10 are connected to the rack gears 1 and 12, and the rack gears 11 and 12 are connected to each other by the intermediate gear 13. A spring 14 is applied to the shafts 6 and 10 in directions close to each other. The rack gear 11 is fixed with a slit plate 15 having a plurality of slits (not shown) formed over the range of movement of the rack gear 11, and the two photocouplers 16 arranged with a phase difference of 90 degrees. By counting by 17, the rotation positions of the rotation arms 5 and 9 are detected.

  As shown in FIG. 3, when a part of the disk 18 is inserted into the disk insertion slot 2, the insertion of the disk 18 is detected by the optical sensor 21 disposed in the vicinity of the disk insertion slot 2. By this detection, driving of the driving roller 3 in the counterclockwise direction is started by the roller driving mechanism 22. Since the disk 18 cannot be moved by the driving roller 3 and the fixed roller 7 at the position shown in FIG. 7 is transferred to the reproduction position in the direction of arrow B while being pinched with 7. During this transfer, the disk 11 is transferred while rotating clockwise.

  4 and 5 are a front view and a rear view showing a state in which the disk 18 is transferred to the reproduction position. In this reproduction position, the drive roller 3 and the fixed roller 6 are the most separated positions in the arrow CD direction orthogonal to the transfer direction A of the disk 18.

  When the disk 18 moves beyond the playback position in the direction of arrow B, the periphery of the disk 18 hits the stopper pin 24 fixed to the chassis 23. As shown in FIG. 4, the stopper pin 24 is disposed at a position offset in the direction of arrow D from the movement trajectory 26 of the center of the disk 18 when the disk 18 is transferred, so that the disk 18 collides with the stopper pin 24. Then, a moving force in the direction of arrow C is generated on the disk 18. When the disk 18 moves in the direction of arrow C, the fixed roller 7 is moved in the direction of arrow C. This moving force separates the drive roller 6 and the fixed roller 7 from each other. As a result, the driving force of the disk 17 is lost. Therefore, the transfer of the disk 18 automatically stops at the position where it abuts against the stopper pin 24.

  Regardless of driving the driving roller 3. If no pulse signal is detected from the photocouplers 16 and 17 for a certain time, it is determined that the disk 18 is located at a predetermined reproduction position, and the roller drive mechanism 22 rotates the drive roller 3 clockwise for a predetermined time to move the disk 18. Moving in the direction of arrow A, the peripheral edge of the disk 18 and the stopper pin 24 are brought to a reproduction position separated from each other. Thereafter, the disk 18 is clamped with a turntable and a clamper (not shown). After the disk 18 is clamped by the turntable and the clamper, the driving roller 3 and the fixed roller 7 are separated from the disk 18 by the arm driving mechanism 25 moving the rotating arm 9 in a direction away from the disk 18. The disk 18 is in a reproducible state. This reproduction state is shown in FIG. 6 which is a front view of the disk reproduction apparatus and FIG. 7 which is a rear view thereof.

  While the disk 18 is being reproduced, the disk 18 rotates at a speed of several hundreds of revolutions per minute. In the above-described embodiment, a part of the disk 18 is exposed outside the housing 20 of the apparatus. There is a risk of injury if your finger touches the edge of the. Therefore, in this embodiment, a protector 31 is provided so that a finger does not touch the periphery of the disc, which will be described below.

  FIG. 8 is a top view of the disc reproducing apparatus 1, and FIG. 9 is a right side view thereof. An arcuate protector 31 is provided that moves to the outside of the periphery of the disk 18 that is exposed from the slit-shaped disk insertion slot 2 provided on the upper surface of the disk playback apparatus 1 during disk playback. This protector has an arc shape that is about 5 mm away from the periphery of a disk having a diameter of 12 cm. The protector 31 is rotatable about a shaft 32 and is rotationally driven by a protector drive mechanism 33.

  After the disk 18 is brought into the reproduction state shown in FIGS. 6 and 7, the protector 31 is rotated about 90 degrees counterclockwise in FIG. The protector 31 is located on the same plane so as to cover the periphery of the disk 18 at a position about 5 mm away from the periphery of the disk 18. Note that the width of the protector 31 is set larger than the thickness of the disc as shown in FIG.

  When the reproduction of the disk 18 is finished and the disk 18 is ejected, the protector 31 is rotated about 90 degrees clockwise in FIG. 11 by the protector drive mechanism 33, so that the protector 31 is removed from the plane on which the disk 18 is located. Move. Next, the arm driving mechanism 25 rotates the rotating arm 9 in the clockwise direction so that the driving roller 3 and the fixed roller 7 come into contact with the peripheral edge of the disk 18. After the disk 18 is sandwiched between the drive roller 3 and the fixed roller 7, the disk clamp by a turntable and a clamper (not shown) is released. Subsequently, by rotating the driving roller 3 clockwise by the roller driving mechanism 22, the disk 18 is transferred from the reproducing position shown in FIG. 4 to the ejecting position shown in FIG. 3 while rotating counterclockwise.

  In the above-described embodiment, the driving roller 3 and the fixed roller 7 are used as the disk loading means for transferring the disk. However, the present invention is not limited to this, and the disk is clamped by an endless belt, for example. It is possible to adopt a disk loading means for transferring the disk, and various other modes can be taken without departing from the spirit of the present invention.

The front view of a disc reproducing | regenerating apparatus. The rear view of a disc reproducing | regenerating apparatus. The figure which shows the state in which a part of disc 18 was inserted in the disc insertion slot 2. FIG. The front view which shows the state which the disc 18 was conveyed to the reproduction | regeneration position. The rear view which shows the state by which the disk 18 was conveyed to the reproduction | regeneration position. FIG. 2 is a front view of a disc reproducing apparatus in which a disc is in a reproducing state. The rear view of the disc reproducing | regenerating apparatus by which the disc 18 was made into the reproduction | regeneration state. FIG. 3 is a top view of the disc playback apparatus. The right view of a disc reproducing | regenerating apparatus. FIG. 3 is a top view of the disc reproducing apparatus in which the protector 31 is in an operating state. The right view of the disc reproducing | regenerating apparatus by which the protector 31 was made into the operation state. The front view of the disc reproducing | regenerating apparatus by which the protector 31 was made into the operation state.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Disc reproduction | regeneration apparatus 3 Drive roller 7 Fixed roller 22 Roller drive mechanism 24 Stopper pin 25 Arc drive mechanism 31 Protector 33 Protector drive mechanism

Claims (1)

A disc loading means for sandwiching the periphery of the disc in order to transfer the disc inserted into the disc insertion slot in the disc playback device between the ejection position and the playback position where a part of the disc is exposed to the outside;
The position where the disk has moved further in the loading direction than the position where the periphery of the disk is positioned at the position where the disk has moved from the eject position to the playback position, and moved in a direction perpendicular to the movement track of the center of the disk. And a stopper that contacts the periphery of the disk and generates a moving force on the disk in a direction perpendicular to the loading direction.