JP2010205369A - Disc loading mechanism - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a disc loading mechanism capable of reliably and stably conveying an optical disc. <P>SOLUTION: The mechanism includes a pair of guide rails 41L and 41R that are fixed right and left symmetrically along a direction toward the recess of a casing 11 at both lateral ends of a disc insertion/extraction slot 12a and have a cam groove 41c and a linear guide groove 41d right and left symmetrically ; a pair of sliders 43L and 43R reciprocating along the linear guide grooves 41d of the respective guide rails 41L and 41R by driving force of a drive power source 45; a pair of optical disc holding levers 42L and 42R that are engaged with the cam grooves 41c of the pair of the guide rails 41L and 41R, respectively, supported in a turnable manner by the pair of sliders 43L and 43R so as to hold the circumference 1g of the optical disc 1 according to the shape of each cam groove 41c or to release the holding of the circumference of the optical disc, and reciprocate integrally with the pair of sliders; and a pair of springs 44L and 44R urging the pair of disc holding levers substantially toward the virtual center O of the optical disc. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a disk loading mechanism capable of inserting / removing an optical disk from a disk insertion / removal opening provided on the front side of a housing of an optical disk apparatus.

  Generally, a disc-shaped optical disc records information signals such as video information, audio information, and computer data on a spiral or concentric track formed on the signal surface of a transparent substrate with high density and has been recorded. This is often used because a desired track can be accessed at a high speed when the track is reproduced.

  As this type of optical disc, in addition to CD (Compact Disc) and DVD (Digital Versatile Disc) capable of recording / reproducing with higher density than CD, BD capable of recording / reproducing with higher density than DVD recently. (Blu-ray Disc) is also commercially available.

  These optical discs have a thickness from the laser beam incident surface to the signal surface on which the laser beam from the objective lens provided in the optical pickup is incident, about 0.1 mm for BD, about 0.6 mm for DVD, and about 0.6 mm for CD. Although it differs depending on the type of the optical disk, about 1.2 mm, the total thickness of the optical disk is standardized to 1.2 mm, the outer diameter of the optical disk is 120 mm, and the diameter of the center hole of the optical disk is standardized to 15 mm. Optical discs (two types of BD and DVD or three types of BD, DVD and CD) can be inserted and removed using the same disc loading mechanism provided in the optical disc apparatus, and an optical pickup is used in the optical disc apparatus. Recording and playback are possible.

  By the way, the disk loading mechanism for transporting the optical disk into the optical disk apparatus can be broadly divided into a cartridge system for storing the optical disk in the cartridge and transporting the entire cartridge into the optical disk apparatus, and a bare optical disk (bare type optical disk). A tray system that transports the optical disk device mounted on a tray that can be pulled out in the optical disk device, or a slot for manually inserting a bare optical disk from the disk insertion / removal port provided on the front side of the optical disk device housing to the middle of the housing. In method etc.

  At this time, paying attention to the slot-in method that can provide the disk loading mechanism at a low cost among the above-mentioned methods, the upper and lower surfaces of the bare optical disk are sandwiched between the disk guide and the two taper rollers, and the two taper rollers are rotated. There is a slot-in type loading device for loading an optical disc (see, for example, Patent Document 1), and there is a recording medium driving device for loading an optical disc by pressing three rollers against the outer periphery of a bare optical disc. (For example, refer to Patent Document 2).

  FIG. 11 is a perspective view showing the slot-in type loading device of the first conventional example.

FIG. 12 is a plan view showing a recording medium driving apparatus according to the second conventional example.

  The slot-in type loading device 100 of Conventional Example 1 shown in FIG. 11 is disclosed in Patent Document 1, and will be briefly described with reference to Patent Document 1. A plate-like disc guide 101 is fixed to the rear side of the disc insertion / removal opening provided on the upper surface of the optical disc (not shown), and is a rotatable feed roller support arm 103 urged by a spring 102. The first and second tapered rollers 104 and 105 formed in a tapered cylindrical shape (a drum shape) are connected to the drive gear 106 so as to face the lower surface side of an optical disk (not shown) and are rotatably supported.

  Then, a bare optical disk inserted through a disk insertion / removal opening (not shown) is inserted between the disk guide 101 and the first and second taper rollers 104 and 105 to drive the first and second taper rollers 104 and 105. It is described that the optical disk is transported to a clamp position in the optical disk apparatus by being rotationally driven through a gear 106.

  Further, the recording medium driving device 200 of the conventional example 2 shown in FIG. 12 is disclosed in Patent Document 2, and briefly described with reference to Patent Document 2, than a disk insertion / removal port (not shown). A roller 202 that is pivotally attached to the tip of a receiving arm 201 that is pivotable to the right rear, and a roller that is pivotally attached to the tip of a sub arm 203 that is pivotally provided to the left rear than a disk insertion / removal opening (not shown) The outer peripheral edge 207g of the optical disk 207 is gripped by 204 and a roller 206 that is pivotally attached to the tip of a discharge arm 205 that is rotatably provided in the interior of the apparatus 200.

  Then, the receiving arm 201 is rotated in the direction of arrow A and the sub arm 203 is rotated in the direction of arrow A to push the optical disk 207 into the apparatus 200, while the discharge arm 205 is rotated in the direction of arrow C to optical disk. It is described that 207 is discharged outside the apparatus 200.

JP 2005-346857 A JP 2002-367261 A

  By the way, in the slot-in type loading device 100 disclosed in Patent Document 1, when an optical disc (not shown) is inserted between the disc guide 101 and the first and second taper rollers 104 and 105, the label surface of the optical disc is shown. Since the disk guide 101 is in contact with the upper surface side, the upper surface side of the optical disk is warped in a convex shape, and the upper surface of the optical disk may be scratched due to friction of the disk guide 101. Since the first and second taper rollers 104 and 105 are in pressure contact with the lower surface side which is the laser beam incident surface side, when the lower surface side of the optical disk is warped in a convex shape, the first and second taper rollers 104 and 105 Friction may cause scratches on the lower surface of the optical disk, which is a problem.

  In the recording medium driving apparatus 200 disclosed in Patent Document 2, the outer peripheral edge 207g of the optical disk 207 is held by the rollers 202, 204, and 206 that are pivotally attached to the tips of the three arms 201, 203, and 205. However, when the optical disk 207 is ejected to the outside of the apparatus 200, a center hole 207h of the optical disk 207 is not inserted into a disk insertion (not shown) so that the lower surface side that is the laser beam incident surface side of the optical disk 207 is not touched manually. It must be unloaded to the outside of the opening.

  Therefore, even if the rear end of the outer peripheral edge 207g of the optical disk 207 is clamped by the roller 206 pivotally attached to the front end of the discharge arm 205, the optical disk 207 cannot be stably supported.

  Therefore, in the present invention, the label surface of the optical disk is used when a naked optical disk (bare type optical disk) is inserted / removed from a disk insertion / removal port provided on the front side of the housing of the optical disk apparatus by applying the slot-in method. It is an object of the present invention to provide a disc loading mechanism that can transport an optical disc without damaging the upper surface and the lower surface on the laser beam incident surface side, and that can reliably and stably take out the optical disc out of the housing.

The present invention has been made in view of the above problems, and the first invention mounts the optical disc (1) inserted from the disc insertion / removal opening (12a) provided on the front side of the housing (11), and A turntable (21) provided in the housing (11);
Cam grooves are installed on the left and right ends of the disk insertion / removal opening (12a) across the turntable (21) from the rear of the disk insertion / removal opening (12a) toward the back of the housing (11). A pair of guide rails (41L.41R) having (41c) and a linear guide groove (41d);
A pair of sliders (43L.43R) reciprocally moved by the driving force of the drive source (45) along each linear guide groove (41d) of the pair of guide rails (41L.41R);
Engage with each cam groove (41c) of the pair of guide rails (41L, 41R) and grip the outer peripheral edge (1g) of the optical disc (1) according to the shape of each cam groove (41c). Alternatively, the optical disk (1) is rotatably supported by the pair of sliders (43L.43R) so as to release the grip of the outer peripheral edge (1g) of the optical disk (1), and integrated with the pair of sliders (43L.43R). The optical disc gripping the vicinity of the outer peripheral edge (1g) intersecting the imaginary line (KL) passing through the virtual center (O) of the optical disc (1) perpendicular to the insertion direction of the optical disc (1) A pair of optical disk grip levers (42L.42R) provided with a portion (42d);
A disk loading mechanism (10) characterized by comprising:

The second invention is the disk loading mechanism (10) of the first invention described above,
Each cam groove (41c) of the pair of guide rails (41L, 41R) is a standby position for waiting for the optical disc (1) to be inserted into the housing (11) from the disc insertion / removal port (12a). Y1) is set, and the optical disc mounting position (Y2) for mounting the optical disc (1) on the turntable (21) is set behind the standby position (Y1). An optical disc ejection position (Y3) for ejecting the optical disc (1) mounted on the turntable (21) is set in the vicinity of the insertion / removal port (12a), and each cam groove (41c) includes the pair of cam grooves (41c). The optical disc grip levers (42L, 42R) are put on standby at the standby position (Y1) and inserted between the standby position (Y1) and the optical disc mounting position (Y2). The pair of optical disc grip levers (42L, 42R) are rotated against a pair of springs (44L, 44R) to keep the grip state with respect to the optical disc (1), and the optical disc is mounted. The optical disc (1) rotated in the grip release direction with respect to the optical disc (1) held in the vicinity of the position (Y2) and ejected between the standby position (Y1) and the optical disc ejection position (Y3). The disc loading mechanism (10) is characterized in that the disc loading mechanism (10) is formed so as to be rotated in the gripping direction by the urging force of the pair of springs (44L, 44R) with respect to 1).

The third invention is the disk loading mechanism (10) of the second invention described above,
Each cam groove (41c) of the pair of guide rails (41L, 41R) is formed in a wide straight line between the disk insertion / removal opening (12a) and the standby position (Y1), and the turntable (21) When transporting the optical disk (1) mounted thereon in the ejection direction, the pair of optical disk grip levers (42L, 42R) are rotated in the direction of gripping the optical disk by the biasing force of the pair of springs (44L, 44R). A first linear cam groove (41c1);
The pair of optical discs that are formed in a tapered cam shape connected to the rear end of the first linear cam groove portion (41c1) and are waiting at the standby position (Y1) as the optical disc (1) is inserted. A taper cam portion (41c2) for rotating the pair of optical disc gripping levers (42L, 42R) in the optical disc gripping direction against the pair of springs (44L, 44R) while pushing the levers (42L, 42R);
The taper cam portion (41c2) is connected to the optical disc mounting position (Y2) and is formed in a straight line narrower than the first linear cam groove portion (41c1). The taper cam portion (41c2) forms the optical disc (41c2). 1) a second linear cam groove (41c3) for restricting the rotation of the pair of optical disk grip levers (42L, 42R) while gripping the outer peripheral edge (1g);
Between the rear end of the second linear cam groove portion (41c3) and the optical disc mounting position (Y2), the second linear cam groove portion (41c3) is formed in a taper cam groove shape having substantially the same width as the second linear cam groove portion (41c3). A taper cam groove (41c4) for rotating the optical disk grip lever (42L, 42R) in the direction of releasing the optical disk grip;
A disk loading mechanism (10) characterized by comprising:

The fourth invention is the disk loading mechanism (10) of any one of the first to third inventions described above,
The optical disc (1) is directed with the upper surface (1a) on the label surface side of the optical disc (1) facing upward and the lower surface (1b) on the laser beam incident surface side of the optical disc (1) facing downward. When inserting from the disk insertion / removal opening (12a), each optical disk gripping part (42d) of the pair of optical disk gripping levers (42L, 42R) has a U-shape by a groove part (42d1) and upper and lower flange parts (42d2, 42d3). The upper flange portion (42d3) formed in a groove shape and in contact with the lower surface (1b) of the optical disc (1) is in contact with the upper surface (1a) of the optical disc (1). 42d2) is a disc loading mechanism (10) characterized in that it is formed wider than the width.

Furthermore, a fifth invention is the disk loading mechanism (10) of any one of the first to fourth inventions described above,
When the optical disk (1) mounted on the turntable (21) is ejected from the disk insertion / removal port (12a), the virtual center (O) of the optical disk (1) is near the optical disk mounting position (Y2). The pair of optical disk grip levers (42L, 42R) gripped toward the disk) are conveyed together with the pair of sliders (43L, 43R) to the disk insertion / removal opening (12a), and the pair of optical disk grip levers ( 42L.42R) each optical disk gripping portion of the pair of optical disk gripping levers (42L, 42R) biased toward the substantially virtual center direction of the optical disk (1) by a pair of springs (44L, 44R). (42d) is projected from the left and right ends of the disk insertion / removal opening (12a) to the outside so that each optical disk gripping part (42d) A disk loading mechanism (10), characterized in that withdrawing the optical disc (1).

  According to the disk loading mechanism of the first invention described above, the pair of guide rails are symmetrically formed on the left and right ends of the disk insertion / removal opening provided on the front side of the casing from the rear of the disk insertion / removal opening toward the back of the casing. When the pair of optical disk gripping levers are rotatably supported by the pair of sliders that are installed and reciprocated along the pair of guide rails, the pair of optical disk gripping levers is configured so that each optical disk gripping part that grips the optical disk As a result, the optical disc can be transported in a state where the optical disc is securely and stably gripped, and the label of the optical disc. The optical disk can be transported without damaging the upper surface serving as the surface and the lower surface serving as the laser beam incident surface.

  According to the disk loading mechanism of the second invention described above, each cam groove of the pair of guide rails causes the pair of optical disk gripping levers to wait at the standby position and is inserted between the standby position and the optical disk mounting position. The pair of optical disc grip levers are rotated against a pair of springs so as to keep the grip state with respect to the optical disc so that the optical disc gripped in the vicinity of the optical disc mounting position is released in the grip release direction. It is formed so that it can be rotated and rotated in the gripping direction by the biasing force of a pair of springs with respect to the optical disk ejected between the standby position and the optical disk ejection position. And it can be performed stably.

  According to the disk loading mechanism of the third invention described above, each cam groove of the pair of guide rails has a first linear cam groove portion, a taper cam portion, a second linear cam groove portion, and a taper cam groove portion. In particular, the second linear cam groove portion restricts the rotation of the pair of optical disc gripping levers while the outer peripheral edge of the optical disc is held by the taper cam portion. It is possible to prevent the optical disc from being detached from the pair of optical disc gripping levers during conveyance of the optical disc.

  According to the disc loading mechanism of the fourth invention described above, each optical disc gripping portion of the pair of optical disc gripping levers is formed in a U-shaped groove shape by the groove portion and the upper and lower flange portions, and the lower surface of the optical disc is Since the width of the lower flange part in contact with the upper surface of the optical disk is wider than the width of the upper flange part in contact with the optical disk, the optical disk can be securely and stably gripped without damaging the upper and lower surfaces of the optical disk.

  Further, according to the disk loading mechanism of the fifth invention described above, when the optical disk mounted on the turntable is ejected from the disk insertion / removal port, a pair of grips toward the substantially virtual center of the optical disk in the vicinity of the optical disk mounting position. A pair of optical disk gripping levers that are transported integrally with the pair of sliders to the disk insertion / removal opening and are biased toward a substantially virtual center direction of the optical disk by a pair of springs that bias the pair of optical disk gripping levers Since each optical disk gripping part protrudes outward from the left and right ends of the disk insertion / removal port and the optical disk is pulled out from each optical disk gripping part, the optical disk can be reliably and stably taken out.

1 is an external perspective view showing an optical disc apparatus using a disc loading mechanism according to the present invention. (A), (b) is a plan view showing the state when the optical disk is mounted on the turntable after the optical disk is inserted into the housing in the optical disk apparatus using the disk loading mechanism according to the present invention, the right side surface. FIG. FIGS. 4A and 4B are a plan view and a right side view showing a state in which an optical disk mounted on a turntable is ejected from a housing in an optical disk apparatus using a disk loading mechanism according to the present invention. It is the perspective view which expanded and showed the left side of the disc loading mechanism based on this invention. It is the top view which expanded and showed the left side of the disc loading mechanism based on this invention. In the disk loading mechanism according to the present invention, a pair of left and right sliders that rotatably support a pair of left and right optical disk grip levers is a plan view showing a state in which they reach a standby position. In the disk loading mechanism according to the present invention, a pair of left and right sliders that rotatably support a pair of left and right optical disk grip levers is a plan view showing a state in which the optical disk mounting position is reached. FIG. 6 is a plan view showing a state in which a pair of left and right sliders rotatably supporting a pair of left and right optical disc gripping levers reaches an optical disc ejection position in the disc loading mechanism according to the present invention. (A). (B) is a perspective view showing a state in which the gripping force by each optical disk gripping portion of the pair of left and right optical disk gripping levers is directed toward the center hole of the optical disk in the disk loading mechanism according to the present invention. FIG. 5 is a plan view showing a state in which the optical disc is manually pulled out from each optical disc gripping portion of the pair of left and right optical disc gripping levers at the optical disc ejection position in the disc loading mechanism according to the present invention. It is the perspective view which showed the loading apparatus of the slot-in system of the prior art example 1. FIG. FIG. 10 is a plan view showing a recording medium driving device of Conventional Example 2.

  Hereinafter, an embodiment of a disk loading mechanism according to the present invention will be described in detail with reference to FIGS.

  As shown in FIG. 1, in an optical disc apparatus 10 using a disc loading mechanism according to the present invention, a casing 11 constituting the appearance of the apparatus 10 is formed in a box shape, and a front surface 11a of the casing 11 is formed. A front panel 12 is attached.

  The front panel 12 is formed with a disk insertion / removal opening 12a that is substantially horizontal and penetrates a rectangular shape larger than the outer shape of the disk-shaped optical disk 1.

  At this time, the disc-shaped optical disc 1 is either BD, DVD, or CD, and has a diameter of 120 mm, a thickness of 1.2 mm, and a hole diameter of the central hole 1 h of 15 mm based on each optical disc standard.

  When the disc-shaped optical disk 1 is inserted into or removed from the disk insertion / removal opening 12a, the upper surface 1a on the label surface side of the optical disk 1 faces upward, and the lower surface 1b on the laser beam incident surface side of the optical disk 1 faces down. Since the bare optical disk (bare type optical disk) 1 is manually inserted from the disk insertion / removal opening 12a to the middle of the housing 11 in a posture directed toward the optical disk apparatus 10, the optical disk apparatus 10 is a well-known slot-in system. Is adopted.

  At this time, as will be described later, a part of each of the pair of left and right optical disc gripping levers 42L and 42R (FIG. 2) that grips the optical disc 1 when the optical disc 1 is ejected can protrude outward from the left and right ends of the disc insertion / extraction opening 12. Thus, the disc insertion / removal opening 12a is formed with a gap in the vertical and horizontal directions with respect to the optical disc 1. Therefore, the optical disk 1 is manually pulled out from the pair of left and right optical disk grip levers 42L and 42R (FIG. 2) protruding from the disk insertion / removal opening 12a.

  Further, as shown in FIGS. 2A and 2B and FIGS. 3A and 3B, the optical disk apparatus 10 is provided with a plurality of constituent members 21 to 27 for recording and reproducing the optical disk 1. A disk clamp for traversing the traverse mechanism 20 so as to be movable in the arrow Z direction (vertical direction) by a drive source (not shown) below the housing 11 and clamping the optical disc 1 facing the traverse mechanism 20 The portion 30 is fixed above the housing 11. Further, the naked optical disk 1 manually inserted from the disk insertion / removal opening 12a provided in front of the housing 11 is automatically conveyed from the middle of the housing 11 to the disk mounting position and is mounted in the housing 11. A disc loading mechanism 40 for automatically ejecting the optical disc 1 to the outside of the disc insertion / removal opening 12a is provided symmetrically on both left and right ends of the disc insertion / removal opening 12a.

  More specifically, first, the traverse mechanism unit 20 includes a motor 22 having a turntable 21 mounted on the optical disk 1 and fixed to a motor shaft, and two optical disks 1 for recording and reproducing information signals. An optical pickup 24 that is movable in the radial direction of the optical disk 1 along the guide shaft 23 is mounted on a rectangular traverse base 25.

  The traverse base 25 is mounted on a rectangular main chassis 27 with its four corners being damped by a total of four rubber insulators 26.

  Next, the disc clamp portion 30 has a cup-shaped clamper support 31 fixed to the upper side of the housing 11, and the disc clamper 32 is connected to the turntable 21 in a round hole (not shown) formed in the clamper support 31. It is suspended so that it can rotate oppositely.

  Then, at the initial time when the optical disk 1 is not inserted into the housing 11, or when the optical disk 1 is inserted into the housing 11 by the disk loading mechanism unit 40, or the optical disk 1 is installed by the disk loading mechanism unit 40. As shown in FIGS. 2A and 2B, the motor 22 and the optical pickup 24 mounted on the traverse base 25 move downward in the arrow Zdown direction together with the main chassis 27 when being discharged from the body 11. Then, the traverse mechanism unit 20 is retracted so as to allow the optical disk 1 to be transported (loading).

  On the other hand, when the center hole 1h of the optical disc 1 reaches the position facing the turntable 21 by the disc loading mechanism 40, the motor 22 and the optical pickup 24 mounted on the traverse base 25 are integrated with the main chassis 27 in the direction of the arrow Zup. As a result, the chuck portion 21 a of the turntable 21 enters the center hole 1 h of the optical disc 1, and the optical disc 1 is mounted on the turntable 21 by the disc clamper 32. Thereafter, when the optical disk 1 is rotated integrally with the turntable 21 by the motor 22, an information signal is recorded on the signal surface of the optical disk 1 by the optical pickup 24 that is movable in the radial direction of the optical disk 1, or recorded. The information signal is reproduced.

  When recording or reproduction of the optical disk 1 is completed in the casing 11, the optical disk 1 is automatically moved out of the casing 11 by the disk loading mechanism 40 as shown in FIGS. 3 (a) and 3 (b). Is discharged.

  Next, the disk loading mechanism 40 constitutes a main part of the present invention. The disk loading mechanism 40 described above includes a pair of left and right guide rails 41L and 41R and a pair of left and right optical disk gripping levers 42L and 42R. And a pair of left and right sliders 43L and 43R and a pair of left and right torsion springs 44L and 44R (FIGS. 4 to 6).

  That is, the pair of left and right guide rails 41L and 41R are located on both left and right sides of the disk insertion / removal opening 12a across the turntable 21 provided in the housing 11 from the rear of the disk insertion / removal opening 12a toward the back of the housing 11. Are fixed symmetrically.

  Further, a pair of left and right optical disc gripping levers 42L and 42R formed symmetrically on the upper surface side of the pair of left and right guide rails 41L and 41R are provided, and symmetrical to the lower surface side of the pair of left and right guide rails 41L and 41R. A pair of left and right sliders 43L and 43R formed on the left and right sides are slidably provided in the direction of the arrow Y, and the pair of left and right optical disc gripping levers 42L and 42R sandwich the pair of left and right guide rails 41L and 41R. 43L and 43R are rotatably supported.

  At this time, the pair of left and right sliders 43L and 43R are looped into a driving pulley 45 and a plurality of driven pulleys 46 that are driven to rotate by a motor (not shown) along the inside of each lower surface of the pair of left and right guide rails 41L and 41R. Is connected to a timing belt 47 that is stretched over the belt. When the driving pulley 45 is driven to rotate, the pair of left and right optical disc gripping levers 42L and 42R rotatably supported on the pair of left and right sliders 43L and 43R connected to the timing belt 47 are arrowed at the same speed in the same direction. It can reciprocate in the Y direction.

  Here, the left side component of the disk loading mechanism 40 is shown in an enlarged manner in FIGS. 4 and 5, and the right side is configured symmetrically with respect to the left side. 5 will be described in detail.

  As shown in FIGS. 4 and 5, the left guide rail 41L is formed in a long flat plate shape between the upper surface 41a and the lower surface 41b using, for example, a resin material. A cam groove 41c is formed on the left side so as to penetrate long, and a linear guide groove 41d is formed on the right side of the cam groove 41c so as to penetrate the long side with the same width substantially parallel to the cam groove 41c. .

  At this time, the cam groove 41c in the left guide rail 41L is formed in a wide linear shape between the disk insertion / removal opening 12a and the standby position Y1 (only shown in FIG. 5), and the optical disk 1 mounted on the turntable 21. And the rear end of the first linear cam groove portion 41c1 for rotating the left optical disc holding lever 42L in the optical disc holding direction by the biasing force of the left torsion spring 44L. The left optical disc gripping lever 42L is pushed against the left torsion spring 44L while pushing the left optical disc gripping lever 42L waiting at the standby position Y1 as the optical disc 1 is inserted. A taper cam portion 41c2 that rotates in the optical disc gripping direction, and an optical disc that is connected to the taper cam portion 41c2. It is formed in a linear shape narrower than the first linear cam groove portion 41c1 up to the mounting position Y2 (shown only in FIG. 5), and the left optical disc is held while the outer peripheral edge 1g of the optical disc 1 is held by the tapered cam portion 41c2. A second linear cam groove portion 41c3 that restricts the rotation of the lever 42L, and a taper cam having substantially the same width as the second linear cam groove portion 41c3 between the rear end of the second linear cam groove portion 41c3 and the optical disc mounting position Y2. A taper cam groove portion 41c4 that is formed in a groove shape and rotates the optical disc grip lever 42L on the left side in the optical disc grip release direction.

  The left optical disc gripping lever 42L is formed with an optical disc gripping portion 42d for gripping the outer peripheral edge 1g of the optical disc 1 on the right side 42c side between the upper surface 42a and the lower surface 42b using a resin material.

  At this time, the optical disc gripping portion 42d is formed in a U-shaped groove shape by the groove portion 42d1 and the upper and lower flange portions 42d2 and 42d3, and the optical disc gripping portion 42d is the lower surface 1b of the optical disc 1 (FIG. 1). ) Is formed wider than the width of the upper flange portion 42d2 in contact with the upper surface 1a (FIG. 1) of the optical disc 1, and the optical disc is inserted in the lower lung portion 42d3. A tapered portion 42d4 is formed on the side.

  Thereby, the optical disk 1 can be securely and stably gripped without damaging the upper and lower surfaces 1a and 1b of the optical disk 1.

  Further, two boss portions 42e and 42f are formed to protrude downward on the lower surface 42b of the left optical disc gripping lever 42L, and one boss portion 42e is formed to be short from the upper surface 42a side of the left guide rail 41L. The other boss portion 42f is inserted into the cam groove 41c and is longer than the one boss portion 42e, and slidably passes through the linear guide groove 41d from the upper surface 41a side of the left guide rail 41L. The slider 43L enters a round hole 43b formed in the upper surface 43a of the slider 43L so as to be rotatable.

  Further, the left slider 43L is formed in a substantially rectangular shape using a resin material, and three boss portions 43c to 43e are formed to protrude upward on the upper surface 43a. The two boss portions 43c and 43d formed on the same line as the round hole 43a supporting the 42L boss portion 42f are formed in a short shape so as to be within the linear guide groove 41d from the lower surface 41b side of the left guide rail 41L. Is slidably entered.

  On the other hand, the boss portion 43e disposed on the right side of the two boss portions 43c and 43d is formed longer than the two boss portions 43c and 43d, and the left side torsion spring 44 is fitted therein. The rear end side of the right side 42c of the left optical disc gripping lever 42L is pushed, and the left optical disc gripping lever 42L is biased in the direction of the virtual center O (FIGS. 2 and 3) of the optical disc 1.

  The left slider 43L is formed with a belt connecting portion 43g for connecting the timing belt 47 inside the right side surface 43f toward the lower surface 43h.

  With the above configuration, the disc loading mechanism 40 is configured so that the left optical disc gripping lever 42L is rotatably supported by the left slider 43L with the left guide rail 41L interposed therebetween, and is connected to the timing belt 47. The left optical disc gripping lever 42L can reciprocate in the arrow Y direction along the left guide rail 41L.

  Of course, the right optical disc gripping lever 42R (not shown in FIGS. 4 and 5) is also rotatably supported by the right slider 43R across the right guide rail 41R and connected to the timing belt 47. The right optical disc gripping lever 42R can reciprocate in the direction of the arrow Y along the right guide rail 41R integrally with 43R.

  As shown in FIG. 5, the cam groove 41c of the left guide rail 41L waits for insertion of the optical disk 1 between the disk insertion / removal opening (FIGS. 1 to 3) and the turntable (FIGS. 1 and 2). A standby position Y1 is set, and an optical disk mounting position Y2 for mounting the optical disk 1 on the turntable 21 is set behind the standby position Y1, and mounted on the turntable 21 in the vicinity of the disk insertion / removal port 12a. An optical disc discharge position Y3 for discharging the optical disc 1 is set.

  Then, including the right side not shown in FIG. 5, the cam grooves 41c of the pair of left and right guide rails 41L and 41R cause the pair of left and right optical disc gripping levers 42L and 42R to wait at the standby position Y1, The optical disk 1 inserted between the standby position Y1 and the optical disk mounting position Y2 is rotated against the pair of left and right torsion springs 44L and 44R so as to keep the gripping state. Then, the optical disk 1 gripped in the vicinity of the optical disk mounting position Y2 is rotated in the grip releasing direction, and a pair of left and right torsion springs 44L for the optical disk 1 ejected between the standby position Y1 and the optical disk ejection position Y3. , 44R so as to rotate in the gripping direction, the optical disc 1 can be transported and the optical disc 1 can be ejected reliably and stably.

  At this time, although not shown in FIG. 5, a switch 1 is provided at the standby position Y1, a switch 2 is provided at the optical disc mounting position Y2, and switches 3 and 4 are provided at the optical disc ejection position Y3.

  Here, the operation of the disc loading mechanism 40 according to the present invention will be described with reference to FIGS. 2 to 5 and the new FIGS.

  First, as shown in FIG. 6, when the disc loading mechanism section 40 according to the present invention is in the initial state, the traverse mechanism section 20 (FIG. 2) moves down and waits for insertion of the optical disc 1.

  Further, at the initial stage, each of the two boss portions 43c and 43d of the pair of left and right sliders 43L and 43R that rotatably support the pair of left and right optical disc gripping levers 42L and 42R, and the pair of left and right optical disc gripping levers 42L and 42R, respectively. The boss portion 42f is slidably fitted in the linear guide groove portions 41d of the pair of left and right guide rails 41L and 41R, and the pair of left and right sliders 43L and 43R are positioned forward of the turntable 21 and Each of the left and right guide rails 41L and 41R waits at each standby position Y1 set at a substantially intermediate position.

  At this time, the boss portions 42e of the pair of left and right optical disc gripping levers 42L and 42R are positioned in front of the taper cam portion 41c2 within the wide first linear cam groove portion 41c1 of the cam grooves 41c of the pair of left and right guide rails 41L and 41R. The left and right optical disc grip levers 42L and 42R are rotated counterclockwise on the left side and clockwise on the right side by the urging force of the pair of left and right torsion springs 44L and 44R. Each is facing inward.

  In this state, when the naked optical disc 1 is manually inserted from the disc insertion / removal opening 12a, the outer peripheral edge 1g of the optical disc 1 enters the optical disc gripping portions 42d of the pair of left and right optical disc gripping levers 42L and 42R, and the optical disc 1 is pushed in. The pair of left and right optical disc gripping levers 42L and 42R are moved in the direction of the arrow Yin while being pushed inward by the force.

  Accordingly, the boss portions 42e of the pair of left and right optical disc gripping levers 42L and 42R extend along the taper cam portion 41c2 from the wide first linear cam groove portion 41c1 of the cam grooves 41c of the pair of left and right guide rails 41L and 41R. In order to move, the pair of left and right optical disk grip levers 42L and 42R counteracts the biasing force of the pair of left and right torsion springs 44L and 44R according to the shape of the taper cam portion 41c2, respectively, The outer peripheral edge 1g of the optical disk 1 is gripped by the optical disk gripping portions 42d of the pair of left and right optical disk gripping levers 42L and 42R.

  Thereafter, the boss portions 42e of the pair of left and right optical disc gripping levers 42L and 42R are held while the outer peripheral edge 1g of the optical disc 1 is gripped by the tapered cam portions 41c2 in the cam grooves 41c of the pair of left and right guide rails 41L and 41R. The pair of left and right guide rails 41L and 41R enter the narrow second linear cam groove portion 41c3 from the tapered cam portion 41c2 of each cam groove 41c of the pair of left and right guide rails 41L and 41R, and the pair of left and right optical disc gripping levers 42L by the narrow second linear cam groove portion 41c3. , 42R, the rotation of the pair of left and right optical disc grip levers 42L, 42R is restricted while the outer peripheral edge 1g of the optical disc 1 is gripped.

  Therefore, the optical disk 1 can be prevented from coming off from the pair of left and right optical disc gripping levers 42L and 42R during conveyance of the optical disc 1 by the narrow second linear cam groove portion 41c3 of the cam grooves 41c of the pair of left and right guide rails 41L and 41R. .

  At this time, the pair of left and right optical disc gripping levers 42L and 42R are imaginary lines KL passing through the virtual center O of the optical disc 1 perpendicular to the insertion direction of the optical disc 1, as shown in FIGS. Since the optical disc 1 can be transported in a state where the optical disc 1 is securely and stably held, the upper surface 1a (FIG. 1) serving as the label surface of the optical disc 1 and the laser beam incident surface The optical disk 1 can be transported without damaging the lower surface 1b (FIG. 1).

  Further, when the pair of left and right optical disc grip levers 42L and 42R are manually pushed and moved at the standby position Y1, the switch 1 (not shown) is switched to the ON state, so that the driving pulley 45 is moved as shown in FIG. The pair of left and right sliders 43L and 43R are moved in the direction of the arrow Yin via the timing belt 47, and accordingly, the boss portions 42e of the pair of left and right optical disc gripping levers 42L and 42R are held while the optical disc 1 is being gripped. The pair of left and right guide rails 41L and 41R move from the tapered cam portion 41c2 of each cam groove 41c into the narrow second linear cam groove portion 41c3.

  Next, as shown in FIG. 7, when the pair of left and right sliders 43L and 43R are further moved in the direction of the arrow Yin and reach the vicinity of the optical disc mounting position Y2 set in the rear part of the pair of left and right guide rails 41L and 41R, The traverse mechanism 20 (FIG. 2) moves upward, and the chuck portion 21a of the turntable 21 in the traverse mechanism 20 (FIG. 2) is fitted into the center hole 1h of the optical disc 1.

  On the other hand, in the vicinity of the optical disc mounting position Y2, the boss portions 42e of the pair of left and right optical disc gripping levers 42L and 42R are tapered cams from the narrow second linear cam groove portions 41c3 of the cam grooves 41c of the pair of left and right guide rails 41L and 41R. The groove 41c4 is reached, and according to the shape of the taper cam groove 41c4, the pair of left and right optical disc gripping levers 42L and 42R resists the biasing force of the pair of left and right torsion springs 44L and 44R, The optical disc gripping portion 42d of the pair of left and right optical disc gripping levers 42L and 42R is separated from the outer peripheral edge 1g of the optical disc 1 because it rotates counterclockwise and further outwards. Thereafter, the optical disc 1 is clamped on the turntable 21 by the disc clamper 32 (FIG. 2), and the mounting is completed.

  Further, when the pair of left and right sliders 43L and 43R reach the optical disc mounting position Y2, the switch 2 (not shown) is switched to the ON state, so that the pair of left and right sliders 43L and 43R stops moving.

  Next, as shown in FIG. 8, when the optical disk 1 is ejected outside the housing 11 (FIGS. 1 to 3), the pair of left and right sliders 43L and 43R are mounted from the optical disk mounting position Y2 shown in FIG. Is moved in the direction of the arrow Yout, which is the opposite direction of the guide rails 41L and 41R, and the turntable is moved by the taper cam portions 41c2 of the cam grooves 41c of the pair of left and right guide rails 41L and 41R. After holding the optical disc 1 mounted on 21 and moving the traverse mechanism 20 (FIG. 2) downward, the pair of left and right sliders 43L and 43R are passed through the standby position Y1 shown in FIG. The optical disc is moved to the optical disc discharge position Y3 set in front of the guide rails 41L and 41R.

  When the pair of left and right sliders 43L and 43R reach the optical disc ejection position Y3, the switch 2 (not shown) is switched to the ON state, so that the pair of left and right sliders 43L and 43R stops moving.

  At the optical disc discharge position Y3, the boss portions 42e of the pair of left and right optical disc gripping levers 42L and 42R hold the outer peripheral edge 1g of the optical disc 1 and the wide first cam grooves 41c of the pair of left and right guide rails 41L and 41R. The rotation restriction of the pair of left and right optical disc gripping levers 42L and 42R is released within the wide first linear cam groove portion 41c1 and reaches the front part in the linear cam groove portion 41c1.

  Here, as described above, the optical disc gripping portions 42d of the pair of left and right optical disc gripping levers 42L and 42R at the optical disc mounting position Y2 are perpendicular to the insertion direction of the optical disc 1 and pass through the virtual center KL of the optical disc 1. The pair of left and right optical disc gripping levers 42L and 42R that can rotate and grip the vicinity of the outer peripheral edge 1g, and the gripping force F of each optical disc gripping portion 42d is applied by the biasing force of the pair of left and right torsion springs 44L and 44R. The outer peripheral edge 1g of the optical disk 1 can be reliably and stably gripped in order to go to the substantially virtual center O of the optical disk 1.

  When the pair of left and right sliders 43L and 43R move to the optical disc discharge position Y3, as shown in FIGS. 9A and 9B, the optical disc gripping portions 42d of the pair of left and right optical disc gripping levers 42L and 42R are The optical disk 1 protrudes to the outside from both right and left ends in a disk insertion / removal opening 12a provided in the front panel 12 while holding the outer peripheral edge 1g. Also at this time, since the gripping force F from the respective optical disk gripping portions 42d of the pair of left and right optical disk gripping levers 42L and 42R is directed toward the center hole 1h of the optical disk 1, the optical disk 1 is reliably and stably held by the respective optical disk gripping portions 42d. Can be supported.

  Next, as shown in FIG. 10, the optical disc is ejected from the left and right ends in the disc insertion / removal opening 12a at the optical disc ejection position Y3, and urged toward the substantially virtual center direction of the optical disc 1 by a pair of left and right torsion springs 44L and 44R. When the optical disc 1 is manually pulled out from the respective optical disc gripping portions 42d of the pair of left and right optical disc gripping levers 42L and 42R in the arrow Yout direction, the pair of left and right optical disc gripping levers 42L and 42R are biased by the pair of left and right torsion springs 44L and 44R. Thus, each boss portion 42f is pivoted counterclockwise and clockwise to face each other inward. At this time, the rotation of the pair of left and right optical disc gripping levers 42L and 42R is detected by a switch 4 (not shown), and after a predetermined timing, the driving pulley 45 is started and the pair of left and right optical discs is maintained while maintaining the above state. The optical disk gripping levers 42L and 42R are returned to the standby position shown in FIG. 6 to wait for the next insertion of the optical disk 1.

DESCRIPTION OF SYMBOLS 1 ... Optical disk, 1a ... Upper surface, 1b ... Lower surface, 1g ... Outer periphery, 1h ... Center hole,
10: Optical disc device,
11 ... Case, 11a ... Front, 12 ... Front panel, 12a ... Disc insertion / removal port,
20 ... traverse mechanism,
21 ... Turntable, 21a ... Chuck part, 22 ... Motor,
23 ... guide shaft, 24 ... optical pickup, 25 ... traverse base,
26: Insulator, 27 ... Main chassis,
30 ... Disc clamp part, 31 ... Clamper support material, 32 ... Disc clamper,
40: Disc loading mechanism,
41L, 41R ... a pair of left and right guide rails, 41a ... upper surface, 41b ... lower surface,
41c ... cam groove, 41c1 ... first linear cam groove portion, 41c2 ... taper cam portion,
41c3 ... 2nd linear cam groove part, 41c4 ... Tapered cam groove part,
41d ... Linear guide groove,
42L, 42R ... a pair of left and right optical disc gripping levers, 42a ... upper surface, 42b ... lower surface,
42c ... right side surface, 42d ... optical disc gripping part, 42d1 ... groove part,
42d2, 42d3 ... upper and lower flange portions, 42d4 ... taper portions,
42e, 42f ... boss part,
43L, 43R ... a pair of left and right sliders, 43a ... an upper surface, 43b ... a round hole,
43c to 43e ... boss portion, 43f ... right side surface, 43g ... belt connecting portion, 43h ... bottom surface,
44L, 44R ... a pair of left and right torsion springs,
45 ... driving pulley, 46 ... driven pulley, 47 ... timing belt,
KL ... virtual line, O ... virtual center of optical disc.

Claims (5)

The optical disk inserted from the disk insertion / removal port provided on the front side of the housing is mounted, and the turntable provided in the housing;
A pair of guide rails installed on the left and right ends of the disk insertion / removal opening across the turntable from the rear of the disk insertion / removal opening toward the inside of the housing and having a cam groove and a linear guide groove ,
A pair of sliders that reciprocate by a driving force of a driving source along each linear guide groove of the pair of guide rails;
Engage with each cam groove of the pair of guide rails, and grip the outer periphery of the optical disc according to the shape of each cam groove, or release the grip of the outer periphery of the optical disc A pair of sliders is rotatably supported, reciprocates integrally with the pair of sliders, and grips the vicinity of the outer peripheral edge intersecting with a virtual line passing through a virtual center of the optical disk perpendicular to the insertion direction of the optical disk. A pair of optical disc grip levers provided with an optical disc grip portion;
A disk loading mechanism comprising:   In each cam groove of the pair of guide rails, a standby position for waiting for the insertion of the optical disk is set in the interior of the housing from the disk insertion / removal port, and the optical disk is placed in the back from the standby position. The optical disk mounting position to be mounted on is set, and an optical disk discharge position for discharging the optical disk mounted on the turntable is set in the vicinity of the disk insertion / removal port. The pair of optical disc grip levers are attached to the standby position so that the optical disc inserted between the standby position and the optical disc mounting position is held in a standby state. The optical disc is rotated against a pair of springs and is held near the optical disc mounting position. The optical disk ejected between the standby position and the optical disk ejection position is rotated in the gripping direction by the biasing force of the pair of springs. 2. The disk loading mechanism according to claim 1, wherein: The cam grooves of the pair of guide rails are formed in a wide straight line between the disk insertion / removal port and the standby position, and the pair of guide rails are used when the optical disk mounted on the turntable is transported in the ejection direction. A first linear cam groove for rotating the optical disc grip lever in the optical disc grip direction by the biasing force of the pair of springs;
Connected to the rear end of the first linear cam groove portion and formed in a taper cam shape, the pair of springs are pushed into the pair of springs while pushing in the pair of optical disc gripping levers waiting at the standby position as the optical disc is inserted. A taper cam portion that rotates the pair of optical disk grip levers in the direction of gripping the optical disk,
The taper cam portion is formed in a straight line having a width narrower than that of the first linear cam groove portion and before the optical disc mounting position, and the pair of the pair of optical discs is held with the outer peripheral edge of the optical disc held by the taper cam portion. A second linear cam groove that restricts rotation of the optical disk gripping lever;
Between the rear end of the second linear cam groove portion and the optical disc mounting position, it is formed in a tapered cam groove shape with substantially the same width as the second linear cam groove portion, and the pair of optical disc grip levers are moved in the optical disc grip release direction. A taper cam groove to be rotated;
The disk loading mechanism according to claim 2, wherein:   The pair of optical disc gripping levers when the optical disc is inserted from the disc insertion / removal opening with the upper surface on the label surface side of the optical disc facing upward and the lower surface on the laser beam incident surface side of the optical disc facing downward Each of the optical disc gripping portions is formed in a U-shaped groove shape by a groove portion and upper and lower flange portions, and the upper flange portion where the width of the lower flange portion in contact with the lower surface of the optical disc is in contact with the upper surface of the optical disc 4. The disk loading mechanism according to claim 1, wherein the disk loading mechanism is formed wider than the width of the disk loading mechanism.   When the optical disk mounted on the turntable is ejected from the disk insertion / removal port, the pair of optical disk grip levers gripped toward the substantially virtual center of the optical disk in the vicinity of the optical disk mounting position and the pair of sliders Each optical disk gripping of the pair of optical disk gripping levers that are integrally conveyed to the disk insertion / removal opening and biased toward a substantially virtual center direction of the optical disk by a pair of springs biasing the pair of optical disk gripping levers 5. The disk loading mechanism according to claim 1, wherein the optical disk is pulled out from each of the optical disk gripping sections by projecting a portion from the left and right ends of the disk insertion / extraction opening.

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