JP2008052853A - Optical disk device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an optical disk device wherein powder generation etc. due to the friction of a disk tray and a door is prevented by opening the door of a tray entrance before the opening operation of the disk tray and closing the door after closing operation is completed. <P>SOLUTION: In the optical disk device, a cam slider 6 is provided with a rib piece 6e having a front slope 6f as a door opening and closing means which opens the door 1b forward to an opening angle where the upper end of the door 1b is positioned lower than the lower surface of the disk tray 5 by pushing the arm 1c of the hinge part of the door 1b from its behind when rotating a drive chassis 4 downward by sliding the cam slider 6 in a left or right direction. Before the opening operation of the disk tray 5 and after completing the closing operation, the rib piece 6e moving with the cam slider 6 opens and closes the door 1b. Thus, the door 1b does not contact with the disk tray 5 to prevent powder generation etc. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an optical disc apparatus for recording / reproducing information on an optical disc such as a DVD or a CD. More specifically, the door is opened before the disc tray opens by providing a cam slider with a door opening / closing means for the tray door. The present invention relates to an optical disc apparatus improved so that the door is closed after the closing operation is completed.

  In a conventional general optical disc apparatus, a drive chassis on which an optical pickup and a turntable are mounted is attached to a main chassis so that the rear end of the drive chassis can swing up and down, and a cam slider that swings the drive chassis up and down is mounted on the main chassis. The optical disk apparatus main body is configured by mounting the front edge so as to be slidable left and right and disposing the disk tray between the turntable and the upper clamper and mounting the disk tray to the main chassis so as to be movable back and forth. And this optical disk apparatus main body is installed behind the tray doorway with a door provided in the front panel of the housing | casing.

  In such an optical disc apparatus, the door is always urged in the closing direction and attached to the tray entrance, and the door is pushed open from behind by the disc tray immediately after the opening operation of the disc tray. In addition, the door is closed by the biasing force immediately before the disc tray closing operation is completed.

  However, the optical disk device that pushes the door by the disk tray as described above has a problem that the lower surface of the disk tray and the upper end of the door are rubbed during the opening operation and the closing operation of the disk tray, and thus wear or powder. . Further, since a load due to friction is applied to the disc tray, there is a problem that the opening operation and the closing operation of the disc tray become unstable. Furthermore, in an optical disc apparatus in which the disc tray comes out as soon as the tray door is opened, or the door closes as soon as the disc tray is inserted, the disc tray is opened and closed and the door is opened and closed. There is also a problem that since there is no time margin (time lag), it is not possible to feel a relaxed luxury texture in terms of operation.

On the other hand, an optical disc apparatus has been proposed in which a pinion provided at a hinge portion of a door is engaged with a rack of a disc tray so that the door is opened when the disc tray is opened (Patent Document 1). An open / close door mechanism is also proposed in which an arc-shaped rib is provided around the rotation axis of the door, and the door is urged in the closing direction by pressing the outer peripheral surface of the rib against the back of the panel (Patent Document 2). . Further, a disc player has been proposed in which a vertical rib that can slide on the disc tray is integrally formed on the back surface of the door to smoothly open and close the door (Patent Document 3).
JP-A-2005-302175 JP 2006-54023 A JP 2003-51181 A

  The optical disc apparatus of Patent Document 1 can open the door forward to an opening angle at which the upper end of the door is lower than the lower surface of the disc tray by meshing with the pinion of the hinge portion of the door and the rack of the disc tray. For this reason, the lower surface of the disk tray and the upper end of the door do not rub and cause wear or powdering. However, in this optical disc apparatus, since the door opens and closes only with the operation of the disc tray, it is impossible to open the door before the disc tray opening operation and to close the door after the closing operation is completed. However, there still remains a problem that it is not possible to give a relaxed and high-quality texture in terms of operation by providing a time margin between the opening and closing operations of the disc tray and the opening and closing operations of the door.

  The open / close door mechanism of Patent Document 2 and the disk player of Cited Document 3 both push the door open with a disk tray, and thus leave the problems of the conventional general optical disk device described above as they are. Is.

  The present invention has been made to cope with the above-mentioned problem, and one problem to be solved is that the door opens before the start of the disk tray opening operation and closes after the closing operation ends. Another object of the present invention is to provide an optical disc apparatus capable of giving a relaxed and high-quality texture in terms of operation.

  Another problem to be solved by the present invention is to provide an optical disc apparatus capable of preventing wear and powdering due to friction between the disc tray and the door and stabilizing the operation of the disc tray.

  In order to solve the above-described problems, an optical disk apparatus according to the present invention has a drive chassis on which an optical pickup and a turntable are mounted attached to a main chassis so that the rear end thereof can swing up and down, and the drive chassis is swung up and down. The main body of the optical disk device is configured such that the cam slider to be moved is slidably attached to the front edge of the main chassis, and the disk tray is disposed between the turntable and the upper clamper so as to be movable back and forth. In the optical disc apparatus in which the optical disc apparatus main body is installed behind the tray entrance / exit provided on the front panel of the housing, and the normally energized door is detachably attached to the tray entrance / exit. Slide the cam slider in either the left or right direction to The door opening and closing means for pressing from behind opening the door in front of the hinge portion of the door when rotating the chassis downwardly, is characterized in that provided on the cam slider.

  In the optical disk apparatus of the present invention, the door opening / closing means opens the door forward until the upper end of the door is lower than the lower surface of the disk tray by pushing the hinge portion of the door from behind. It is preferable. The door opening / closing means is preferably provided with a rib piece having a front slope inclined in the front-rear direction with respect to the left-right sliding direction of the cam slider, and in particular, the front slope of the rib piece is a concave curved surface. Is preferred.

  A more desirable optical disc apparatus according to the present invention includes a drive chassis mounted with an optical pickup and a turntable attached to a main chassis so that the rear end of the drive chassis can swing up and down, and a cam slider that swings the drive chassis up and down. It is attached to the front edge of the main chassis so that it can slide left and right, and a disk tray is placed between the turntable and the upper clamper and attached to the main chassis so that it can be moved back and forth. In the optical disc apparatus in which the optical disc apparatus main body is installed behind the tray entrance / exit provided on the front panel of the housing, and the door urged in the normally closing direction is detachably attached to the tray entrance / exit, It has a front slope that inclines in the front-rear direction with respect to the slide direction. A rib piece is provided on the cam slider as a door opening / closing means, and the door slider is hinged by the front slope of the rib piece when the drive slider is rotated downward by sliding the cam slider in either the left or right direction. A substantially U-shaped arm with a rounded part is pushed from behind, and the door is opened forward to an opening angle at which the upper end of the door is lower than the lower surface of the disc tray. It is.

  In the optical disk apparatus according to the present invention, when an optical disk is placed on a disk tray and fed between the turntable and the clamper, the cam slider slides in either the left or right direction (right direction in the embodiment described later), and the drive chassis moves upward. The central opening edge of the optical disk is chucked by the turntable and the clamper, and the optical disk rotates. Then, the optical pickup is irradiated with the laser beam while moving in the direction approaching the turntable, and recording / reproduction is performed. When taking out the optical disk, the cam slider slides in the opposite direction (left direction in the embodiment described later), the drive chassis rotates downward, the chuck of the optical disk by the turntable and the clamper is released, and the optical disk Is placed on a disk tray and taken out from a doorway with a door provided on the front panel of the housing.

  In that case, in the optical disk apparatus of the present invention, when the cam slider is slid in either the left or right direction and the drive chassis is rotated downward, the door opening / closing means that pushes the hinge portion of the door of the tray doorway from behind is used as the cam slider. Therefore, when the cam slider slides as described above to rotate the drive chassis downward before the disc tray opens, the door hinge is pushed from behind by the door opening / closing means, and the door Is opened forward, and then the disc tray on which the optical disc is loaded comes out of the tray doorway with the door open. When the disc tray with the optical disc is fed from the tray entrance / exit, even if the disc tray feeding (closing) operation is completed, the door remains open with its hinge portion pushed by the door opening / closing means, When the cam slider slides in the reverse direction and the drive chassis is rotated upward, the door hinge is pressed by the door opening / closing means, and the door is closed by the biasing force. As described above, the optical disk apparatus of the present invention opens the door before the opening operation of the disk tray and closes the door after the closing operation, so that it can give the consumer a relaxed and high-quality texture in terms of operation. it can. Further, unlike the conventional optical disk apparatus, the load when pushing the door open is not applied to the disk tray, so that the opening operation of the disk tray is stabilized.

  In particular, an optical disc apparatus in which a cam slider is provided with door opening / closing means that pushes the hinge portion of the door from the back and opens the door forward until the upper end of the door is lower than the lower surface of the disc tray is provided on the cam slider. A gap is secured between the lower surface of the disc tray and the upper end of the open door, resulting in a non-contact state, so it is possible to prevent wear (scraping) and dusting of the upper end of the door and the lower surface of the disc tray. Since the load due to friction is not applied to the disc tray, the opening and closing operations of the disc tray are also stabilized.

  The optical disc apparatus provided with a rib piece having a front slope inclined in the front-rear direction with respect to the left-and-right sliding direction of the cam slider as a door opening / closing means has a component force in the front direction generated on the front slope of the rib piece. The door hinge can be pushed reliably from behind, and the door can be opened by changing the inclination angle of the front slope of the rib pieces, the length of the left and right sides, or by adding irregularities to the front slope. The angle and opening / closing speed can be easily adjusted. For example, if the front slope of the rib piece has a concave curved surface, the angle of the end of the front slope that pushes the hinge part of the door first from behind while the rib piece moves with the cam slider is small, so the door slowly The opening speed of the door increases as it approaches the opposite end of the front slope with a large inclination angle, and the door opens to the above opening angle where the door is not in contact with the disc tray when movement of the rib pieces stops. Will stop. As described above, when the door is opened slowly, the opening speed is gradually increased. When the door is stopped at a predetermined opening angle, a high-quality texture on the operation surface of the door can be given.

  In addition, as in a more desirable optical disc apparatus, when a substantially U-shaped arm with a rounded hinge at the door is pushed from the back with the front slope of the rib piece, the rounded arm is caught by the rib piece. The door can be opened and closed smoothly.

  Hereinafter, specific embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a schematic partial plan view of an optical disc apparatus according to an embodiment of the present invention, showing a state in which a tray door is closed, and FIG. 2 shows the same optical disc along the line AA in FIG. FIG. 3 is a schematic partial plan view of the optical disc apparatus showing a state where a tray door is opened, and FIG. 4 is an optical disc taken along line BB in FIG. It is sectional drawing of an apparatus. 5 is an enlarged plan view of a main part of the optical disk device, FIG. 6 is an enlarged plan view of a main part of an optical disk device according to another embodiment of the present invention having different rib pieces, and FIG. It is a principal part enlarged plan view of the optical disk device based on further another embodiment of this invention from which the shape of a piece differs.

  This optical disk apparatus has an optical disk apparatus main body 2 installed in a housing behind a tray inlet / outlet 1a formed in a front panel 1 of the casing (not shown). A door 1b is attached. As shown in FIGS. 2 and 4, the door 1b has a pair of left and right hinge portions formed by forming a support shaft 1d at the tip of a rounded substantially U-shaped arm 1c. The support shaft 1d of the left and right hinge portions is fitted to a pair of left and right bearing portions 1e formed on the back surface of the front panel 1, and is rotatably attached to the tray entrance 1a. The door 1b is normally urged in the closing direction by a torsion coil spring (not shown) attached to the support shaft 1d of one hinge portion.

  The optical disc apparatus main body 2 installed behind the tray entrance / exit 1a has a metal drive chassis 4 on the inner side of a main chassis 3 injection-molded with a thermoplastic synthetic resin and mounting screws 4a and rubber dampers 4b on both sides of the rear end. The drive chassis 4 includes an optical pickup 4c, a spindle motor 4d, a turntable 4e, a drive motor (not shown), a power transmission gear mechanism (not shown), and the like. It is installed.

  The turntable 4e is fixed to the output shaft of the spindle motor 4d. When the drive chassis 4 rotates upward, the optical disk is chucked and rotated by the clamper 3a and the turntable 4e. The clamper 3a is rotatably held by a clamper holding portion 3c at the center of the bridge portion 3b that is horizontally mounted on the upper portion of the main chassis 3. When the pinion 4g meshing with the rack 4f rotates, the optical pickup 4c moves along the two guide shafts 4h in the approaching / separating direction, and when moving in the approaching direction, the laser is detected. Recording / reproduction is performed by irradiating an optical disk with a beam.

  The disk tray 5 is disposed between the turntable 4e and the clamper 3a as shown by phantom lines in FIG. A cam slider 6 is attached to the front edge of the main chassis 3 so as to be slidable in the left and right directions. Two long and short projections 4 i and 4 j protruding from the front end of the drive chassis 4 are cam grooves 6 a and 6 a of the cam slider 6. 6b is engaged. A drive pinion 6d meshes with the rack 6c of the cam slider 6. Accordingly, when the pinion 6d rotates, the cam slider 6 slides in the left-right direction, and the convex portions 4i, 4j at the front end of the drive chassis slide and slide up and down along the cam grooves 6a, 6b. Swings up and down with mounting portions on both sides of the rear end as fulcrums.

  On the front surface of the lower end portion of the cam slider 6, a rib piece 6e is projected integrally as a door opening / closing means toward the front. As shown in an enlarged view in FIG. 5, the rib piece 6 e includes a front slope 6 f that is inclined in the front-rear direction with respect to the left-right sliding direction of the cam slider 6. When sliding to the left in this embodiment), the arm 1c of the left hinge part of the door 1b is pushed from behind by the forward component generated on the front slope 6f, and as shown in FIGS. 3 and 4, the door 1b The door 1b is opened forward to an opening angle at which the upper end of the disc is lower than the lower surface of the disc tray 5.

  The rib piece 6e can easily change the opening angle and the opening / closing speed of the door 1b by changing the inclination angle θ of the front slope 6f, the left and right length L, or by providing irregularities on the front slope 6f. It is possible to adjust. That is, if the inclination angle of the front slope 6f is set large and the left and right length dimension L (in other words, the front and rear depth dimensions) is set short, the opening speed of the door 1b increases and the opening angle increases. Conversely, if the inclination angle θ of the front slope 6f is set to be small and the left and right length dimension L is set to be long, the opening speed of the door 1b is slowed and the opening angle is reduced.

  Further, when the front slope 6f of the rib piece 6e is formed in a concave curved surface as shown in FIG. 6, as described above, the inclination angle of the left end portion of the front slope 6f that first pushes the arm 1c of the door 1b from the back is first set. Since the door 1b starts to open slowly because it is small, the opening speed of the door 1b increases as it approaches the right end of the front slope 6f having a large inclination angle, and the door 1b moves to the disc tray 5 when the movement of the rib piece 6e stops. It opens to the said opening angle which becomes non-contact with, and stops. On the other hand, when the front slope 6f of the rib piece 6e is formed into a convex curved surface as shown in FIG. 7, the inclination angle of the left end portion of the front slope 6f that first pushes the arm 1c of the door 1b from behind is large. 1b starts to open at a large opening speed, but as it approaches the right end of the front inclined surface 6f with a small inclination angle, the opening speed of the door 1b decreases, and when the movement of the rib piece 6e stops, the door 1b is not in contact with the disc tray. It opens to the said opening angle which contacts, and stops slowly. In this way, when the door starts to open slowly, the opening speed gradually increases and stops, or conversely, when the door starts to open quickly and gradually opens slowly and stops slowly, Compared with the case where the door is pushed open by the disc tray, it is possible to give a high-quality texture in terms of the door operation.

  In the optical disk apparatus configured as described above, when an optical disk is placed on the disk tray 5 and fed between the turntable 4e and the clamper 3a, the cam slider 6 slides to the right and the drive chassis 4 rotates upward. The central opening edge of the optical disk is chucked by the turntable 4e and the clamper 3a, and the optical disk rotates. Then, while the optical pickup 4c moves in the direction approaching the turntable 4e, the laser beam is irradiated onto the optical disc, and recording / reproduction is performed. When the optical disk is taken out, the cam slider 6 slides to the left, the drive chassis 4 rotates downward, the optical disk chucking by the turntable 4e and the clamper 3a is released, and the optical disk is placed on the disk tray 5. Then, it is taken out from a tray entrance 1a with a door 1b provided on the front panel 1 of the housing.

  In this case, in this optical disc apparatus, when the cam slider 6 is slid leftward and the drive chassis 4 is rotated downward, the rib piece 6e that pushes the arm 1c of the hinge portion of the door 1b of the tray doorway 1a from behind is cammed. Since the slider 6 is provided, before the disc tray 5 opens, the cam slider 6 slides leftward as shown in FIG. 3 and rotates the drive chassis 4 downward as shown in FIG. Then, the door 1b is pushed forward from the rear by the front slope 6f of the rib piece 6e so that the door opens largely forward until the opening angle at which the upper end of the door 1b is lower than the lower surface of the disc tray 5; Then, the disc tray 5 on which the optical disc is loaded comes out of the tray entrance / exit 1a with the door 1b open. On the other hand, when the disc tray 5 loaded with the optical disc is fed from the tray inlet / outlet 1a, even if the feeding operation of the disc tray 5 is completed, as shown in FIG. 4, the arm 1c of the hinge portion of the door 1b has the rib piece 6e. When the cam slider 6 slides to the right and rotates the drive chassis 4 upward as shown in FIG. 1 and FIG. The pressing of the arm 1c of the door 1b by the front slope 6f of 6e is released, and the door 1b is closed by the biasing force of the torsion coil spring. In this manner, this optical disc apparatus gives the consumer a relaxed and high-quality texture in terms of operation because the door 1b opens before the opening operation of the disc tray 5 starts and the door 1b closes after the closing operation ends. In addition, unlike the conventional optical disc apparatus, the load for pushing and opening the door 1b is not directly applied to the disc tray 5, so that the opening operation of the disc tray 5 is stabilized. In addition, a certain gap G is secured between the lower surface of the disc tray 5 coming out from the tray inlet / outlet 1a and the upper end of the opened door 1b so that the upper end of the door 1b and the disc tray are not in contact with each other. 5 can be prevented from being worn (scraped) and powdered. Further, since the load due to friction is not applied to the disk tray 5, the opening and closing operations of the disk tray 5 are also stabilized.

1 is a schematic partial plan view of an optical disc apparatus according to an embodiment of the present invention, showing a state where a tray door is closed. FIG. FIG. 2 is a cross-sectional view of the same optical disc apparatus along the line AA in FIG. 1. FIG. 2 is a schematic partial plan view of the optical disc apparatus, showing a state where a tray door is opened. FIG. 4 is a cross-sectional view of the same optical disc apparatus along the line BB in FIG. 3. It is a principal part enlarged plan view of the same optical disk device. It is a principal part enlarged plan view of the optical disk device based on other embodiment of this invention from which the shape of a rib piece differs. FIG. 11 is an enlarged plan view of a main part of an optical disc apparatus according to still another embodiment of the present invention in which the shape of rib pieces is different.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Front panel 1a Tray entrance / exit 1b Door 1c Hinge arm 2 Optical disk apparatus main body 3 Main chassis 3a Clamper 4 Drive chassis 4c Optical pick-up 4e Turntable 5 Disc tray 6 Cam slider 6e Rib piece (door opening / closing means)
6f Front slope of rib piece

Claims (5)

A drive chassis equipped with an optical pickup and turntable is attached to the main chassis so that it can swing up and down at its rear end, and a cam slider that swings this drive chassis up and down can slide left and right on the front edge of the main chassis At the same time, a disk tray is arranged between the turntable and the upper clamper and is mounted on the main chassis so that it can be moved back and forth to form an optical disk apparatus body. This optical disk apparatus body is mounted on the front panel of the housing. In the optical disc apparatus which is installed behind the tray entrance provided and which is attached to the tray entrance so that the door urged in the normally closing direction can be opened and closed.
A rib piece having a front slope inclined in the front-rear direction with respect to the left-right sliding direction of the cam slider is provided on the cam slider as a door opening / closing means, and the cam chassis is slid in either the left or right direction to When rotating downward, the front slope of the rib piece pushes the substantially U-shaped arm with the hinged portion of the door rounded from behind, and the upper end of the door is lower than the lower surface of the disc tray. An optical disc apparatus characterized in that the door is opened forward until the opening angle becomes. A drive chassis equipped with an optical pickup and turntable is attached to the main chassis so that it can swing up and down at its rear end, and a cam slider that swings this drive chassis up and down can slide left and right on the front edge of the main chassis At the same time, a disk tray is arranged between the turntable and the upper clamper and is mounted on the main chassis so that it can be moved back and forth to form an optical disk apparatus body. This optical disk apparatus body is mounted on the front panel of the housing. In the optical disc apparatus which is installed behind the tray entrance provided and which is attached to the tray entrance so that the door urged in the normally closing direction can be opened and closed.
The cam slider is provided with door opening / closing means that pushes the hinge portion of the door from behind to open the door forward when the cam slider is slid in either the left or right direction to rotate the drive chassis downward. An optical disc device characterized by the above.   The door opening / closing means opens the door forward to an opening angle at which the upper end of the door is lower than the lower surface of the disc tray by pushing the hinge portion of the door from behind. The optical disk apparatus according to claim 2.   4. The optical disc apparatus according to claim 2, wherein a rib piece having a front slope inclined in the front-rear direction with respect to a left-right sliding direction of the cam slider is provided as the door opening / closing means.   The optical disc apparatus according to claim 4, wherein the front slope of the rib piece is a concave curved surface.

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