JP2008090930A - Disk device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a disk device provided with a clamp mechanism which can correspond to both of a sealed type disk cartridge in which a clamper is contained and a disk cartridge in which single disk or a clamper is not contained, and which is suitable for thinning a whole device. <P>SOLUTION: In the clamp mechanism 60 of the disk device, a clamp arm 63 is rotated by moving a tray 70 between a first position and a second position, and a clamper holder 62 is elevated while a clamper supporting plane 62p of a clamper holder 62 is kept in an almost parallel state to a signal recording plane of the disk. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a disk device for recording data on a disk-shaped storage medium such as an optical disk and / or reproducing data from the disk-shaped storage medium, and more particularly, in a state where the disk-shaped recording medium can be rotated. The present invention relates to a disk device in which a stored cartridge can be loaded.

  Recording or playback using a light beam, CD, DVD, etc., flexible disk for recording or playback using magnetism, and MO or MD for recording or playback using a light beam and magnetism, Disc-shaped recording / reproducing media are already widely used in the world. In particular, recordable media such as DVD-RAM and MO are stored in a cartridge-type storage case as disclosed in Patent Document 1, for example, from the viewpoint of protecting recorded signals.

  FIG. 18 is a diagram showing the concept of the disk cartridge of this example. In FIG. 18, a conventional disc cartridge 100 includes a cartridge main body 101 that houses a disc 10 that can be recorded and / or reproduced, and forms an outer shell of the conventional disc cartridge 100.

  The cartridge main body 101 has means 101 for rotating the disk 10 such as a spindle motor and means for recording and / or reproducing entering the cartridge main body 101, and has openings 101 w on the upper and lower surfaces of the cartridge main body 101 for approaching the disk 10. In addition, positioning holes 102 a and 102 b are provided on the outer surface of the cartridge body 101.

  Further, the conventional disk cartridge 100 covers the opening 101w on the upper surface and the lower surface of the cartridge body 101 and holds the cartridge body 101 in a U-shaped cross section in order to protect the surface of the disk 10 exposed from the opening 101w. A shutter 103 is provided.

  The cartridge shutter 103 can be translated in the direction of the arrow P shown in FIG. 18 and is biased so as to return to the state in which the opening 101w is closed by a spring. The disk 10 is not exposed particularly when no external force is applied. It is configured as follows.

  Further, the cartridge main body 101 has a bridge portion 104 that is bridged on the outer peripheral portion of the opening 101w. The bridge unit 104 maintains the rigidity of the cartridge main body 101 and has a guide function for the cartridge shutter 103.

  Such a disk device that records and / or reproduces the disk 10 stored in the conventional disk cartridge 100 has a relatively simple structure that is easy for the user to understand. Therefore, a loading mechanism using a tray is generally used. Is often adopted. Patent Document 2 discloses a configuration of a disk device using such a tray.

  FIG. 19 is a perspective view showing a configuration of a conventional disk device 600 into which the conventional disk cartridge 100 can be loaded, and FIG. 20 illustrates a clamping operation of the conventional disk device 600 into which the conventional disk cartridge 100 can be loaded. FIG.

  As shown in FIGS. 19 and 20, the disk device 600 includes a base chassis 610, a tray 620, and an upper base 630. The base chassis 610 supports the traverse base 640 and guides the tray 620 so as to be movable in the directions of arrows 620A and 620B. The traverse base 640 is mounted with a spindle motor 650 having a disk mounting surface 650a on which the disk 10 housed in the conventional disk cartridge 100 is rotated and on which the disk 10 is mounted, and recording and / or reproducing light. A pickup 660 is supported. Further, the tray 620 is driven in the directions of the arrow 620A and the arrow 620B by a drive motor (not shown) attached to the base chassis 610.

  The upper base 630 supports the clamper 631 that clamps the disk 10 with the disk mounting surface 650 a of the spindle motor 650, and the clamper 631 rotatably. The clamp moves the clamper 631 up and down in conjunction with the movement of the tray 620. An arm 632 and an urging spring 633 that urges the clamp arm 632 against the upper base 630 and holds the clamp arm 632 on the upper base 630 so as to be rotatable around the line segment 630a are provided. Attached to the chassis 610.

  The tray 620 is provided with guide walls 621a and 621b having a guide function when the conventional disc cartridge 100 is placed. In addition, the tray 620 is provided with a circular recess 620r for directly placing the disc 10 not stored in the conventional disc cartridge 100. An opening 620w for allowing the spindle motor 650 and the optical pickup 660 to approach the disk 10 is provided at the bottom of the recess 620r.

  A clamping operation in such a disk device 600 will be described with reference to FIG.

  As shown in FIG. 20A, the clamper 631 is lifted in the direction of the arrow 631A by the clamp arm 632 rotating in the direction of the arrow 632A around the rotation fulcrum 630a by the biasing force of the biasing spring 633. . As a result, when the tray 620 is inserted in the direction of the arrow 620A with the conventional disc cartridge 100 loaded in the tray 620, the tray 620 is inserted in the direction of the arrow 620A without the clamper 631 coming into contact with the conventional disc cartridge 100. The When the tray 620 further moves in the direction of the arrow 620A, the cam portion 622 provided on the tray 620 and the contact portion 632a provided on the clamp arm 632 come into contact with each other and resist the biasing force of the biasing spring 633. The clamp arm 632 rotates in the direction of the arrow 632B. The clamper 631 descends in the direction of the arrow 631B as the clamp arm 632 rotates, and when the tray 620 is completely inserted and the retracted traverse base 640 is raised, as shown in FIG. The disk 10 is clamped by the magnetic force generated by the magnet provided on the disk mounting surface 650 a of the spindle motor 650 and the iron plate provided on the clamper 631.

  When the cartridge is ejected, the reverse operation of the above-described operation is performed, and the clamp arm 632 is rotated in the direction of the arrow 632A by the biasing force of the biasing spring 633, whereby the clamper 631 is retracted in the direction of the arrow 631A. The tray 620 on which the type disk cartridge 100 is placed is discharged in the direction of the arrow 620B.

  As described above, the clamper 631 is retracted by the movement operation of the tray 620 and the rotation operation of the clamp arm 632, and a mechanism corresponding to the conventional disk cartridge 100 is configured.

  However, the configuration in which the cartridge shutter 103 of the conventional disk cartridge 100 is simply sandwiched by the U-shaped cross section as described above is not suitable for closing the gap existing between the cartridge body 101 and the cartridge shutter 103. For this reason, it becomes difficult to prevent dust from entering the disk cartridge, and the possibility of adverse effects on recording or reproduction on the disk 10 increases. Therefore, in order to try to increase the density as a recent trend, an improvement in dust resistance for the disk cartridge is an important issue.

  As an example of a disk cartridge having a structure for solving such a problem, Patent Document 3 discloses a hermetically sealed disk cartridge that has a structure in which an opening is opened and closed by a plurality of shutters and completely covers the entire disk 10. Is disclosed.

  FIG. 21 is a perspective view showing an appearance of the sealed disk cartridge 200, and FIG. 22 is an exploded perspective view showing components of the sealed disk cartridge 200. FIG.

  As shown in FIGS. 21 and 22, the sealed disk cartridge 200 is provided in a cartridge main body 210 including an upper cartridge main body 211 and a lower cartridge main body 212, the disk 10 accommodated in the cartridge main body 210, and the lower cartridge main body 212. The opening 212w, the shutter part 220 which opens and closes the opening 212w with respect to the outside, and the rotating body 230 are provided.

  As shown in the figure, since the upper cartridge body 211 covers the entire top surface of the disk 10, the sealed disk cartridge 200 includes an internal clamper 240 for clamping the disk 10.

  A first link support shaft 212 a and a second link support shaft 212 b are provided on the inner surface of the lower cartridge main body 212 as support shafts for holding the opening / closing operation of the shutter unit 220. Positioning holes 215a and 215b for determining the position of the sealed disk cartridge 200 in a plane parallel to the disk 10 in the disk device (not shown) are provided on the outer surface of the lower cartridge body 212. .

  Inside the cartridge main body 210, there are provided a shutter portion 220 for closing the opening 212 w, a rotating body 230 that rotates around a point substantially coincident with the center of the disk 10, and a lock member 225.

  The shutter unit 220 includes a first shutter 221 and a second shutter 222.

  The rotating body 230 has a disk shape, and has an opening 230w having a position and shape that matches the opening 212w when the shutter unit 220 is fully opened. Further, on the side surface of the rotating body 230, a first notch portion 231 for rotating the rotating body 230 from the outside, a second notch portion 232, and a gear portion 233 positioned therebetween are provided. It has been. Rotating support shafts 230 a and 230 b for the first shutter 221 and the second shutter 222 are provided on the surface of the rotator 230 that faces the shutter unit 220.

  The first shutter 221 and the second shutter 222 include a rotation center hole 221a and 222a into which the rotation support shafts 230a and 230b are inserted, a first link support shaft 212a and a second link support shaft 212b, respectively. Each has link grooves 221b and 222b inserted therein. For this reason, the first shutter 221 and the second shutter 222 rotate around the rotation support shafts 230a and 230b, respectively.

  The lock member 225 is rotatably supported by a rotation support shaft 212c provided in the lower main body 212. When the opening 212w is closed, the lock 225a and the second rotation member 230 are provided. Is engaged with the notch 232. Thereby, the rotation of the rotating body 230 is locked.

  Since the shutter unit 220 is engaged with the rotating body 230 and the lower cartridge main body 212 as described above, the shutter unit 220 closes and opens the opening 212w by rotating the rotating body 230. be able to.

  As described above, the sealed cartridge 200 has a structure in which the opening is opened and closed by a plurality of shutters, thereby completely covering the entire disk 10 and realizing improved dustproof performance. However, since the internal clamper 240 is built in the disc cartridge, there is a problem that the cost of the disc cartridge itself increases.

  In view of this point, Patent Document 4 discloses an example of an open disk cartridge that improves dustproof performance and does not incorporate a clamper.

  FIG. 23 is a perspective view showing an external appearance of the open disk cartridge 300, and FIG. 24 is an exploded perspective view showing components of the open disk cartridge 300. FIG.

  As shown in FIGS. 23 and 24, the open disk cartridge 300 is provided in the cartridge main body 310 including the upper cartridge main body 311 and the lower cartridge main body 312, the disk 10 accommodated in the cartridge main body 310, and the lower cartridge main body 312. The opening 312w, the shutter 320 that opens and closes the opening 312w, and a rotating body 330 are provided.

  As shown in the drawing, the upper cartridge main body 311 is provided with a disk opening portion 300 w that exposes almost the entire upper surface of the disk 10. For this reason, in the state where the disk 10 is stored in the cartridge main body 310, the upper surface, for example, the label surface of the disk 10 is exposed from the disk opening portion 300 w of the upper cartridge main body 311.

  On the inner surface of the lower cartridge main body 312, rotation support shafts 312 a and 312 b which are rotation shafts of the shutter unit 320 are provided. In addition, positioning holes 315 a and 315 b are provided on the outer surface of the lower cartridge main body 312.

  The shutter unit 320 includes a first shutter 321 and a second shutter 322. The first shutter 321 and the second shutter 322 are provided with rotation holes 321a and 322a into which guide grooves 321b and 322b and rotation support shafts 312a and 312b are inserted, respectively.

  The rotating body 330 has a flat ring-shaped portion and a cylindrical side surface formed on the outside of the ring-shaped portion, and is inserted into the guide grooves 321b and 322b on the surface facing the shutter portion 320 of the ring-shaped portion. Link support shafts 330a and 330b are provided. The ring-shaped portion is further provided with a notch portion 330w. Moreover, the 1st notch part 331, the 2nd notch part 332, and the gear part 333 pinched | interposed by these are formed in the side surface.

  The open disk cartridge 300 further includes a lock member 325, and is supported so as to be rotatable around a support shaft 312c. The lock member 325 has a convex portion 325a, and the convex portion 325a is engaged with the second notch portion 332 to prevent the rotating body 330 from rotating in a state where the shutter portion 320 is closed.

  The rotating body 330 is engaged with the shutter portion 320 by the guide grooves 321b and 322b and the link support shafts 330a and 330b. By rotating the rotating body 330, the shutter portion 320 closes and opens the opening 312w. Can be.

Currently, a BD (Blu-ray disc) using a blue light source is put on the market as a large-capacity optical disc, and both the above-described sealed disc cartridge 200 and open disc cartridge 300 are employed. .
Japanese Patent Laid-Open No. 9-153264 Japanese Patent Laid-Open No. 10-312628 JP 2002-50148 A JP 2004-94996 A

  However, in the disk device corresponding to the BD disk cartridge as shown in Patent Document 3 and Patent Document 4, since the sealed disk cartridge 200 includes the internal clamper 240 inside, the open disk cartridge 300 and the disk disk are included. There is no need for a clamper to load and clamp 10 units. Therefore, when the clamp arm 632 is lowered in conjunction with the insertion operation of the tray 620 as in the conventional disk device 600, the sealed disk cartridge 200 becomes an obstacle when the sealed disk cartridge 200 is loaded. As a result, the clamp arm 632 cannot be completely rotated to the clamp position, and the sealed disk cartridge 200 cannot be correctly loaded into the disk device.

  Further, in the conventional disk device 600, the clamper 631 is moved up and down by rotating the clamp arm 632. When the clamper 631 is lifted, the clamper 631 is tilted and retracted by the tilt of the rotated clamp arm 632. For this reason, the retreat space of the clamper 631 in the disk device 600 becomes large, and there is a problem in making the disk device 600 thinner.

  Further, in the conventional disk device 600, the tip of the clamp arm 632 is configured to be short so that the height of the disk device 600 is not increased by the clamp arm 632 rotated when the clamper 631 is raised. Therefore, when the clamper 631 is lowered, the tip of the clamp arm 632 cannot contact the upper base 630, and only the side of the line segment 630a that is the rotation axis of the clamp arm 632 contacts and is supported by the upper base 630. It becomes the composition which becomes. Therefore, when the clamper 631 is lowered, the clamp arm 632 is supported in a cantilevered state by the upper base 630 and holds the clamper 631, so the traverse base 640 is lowered and the clamper 631 is pulled from the spindle motor 650. In the case of peeling, the clamping arm 632 receives the force to peel off the clamper 631. Therefore, it is necessary to increase the plate thickness to increase the rigidity so that the clamping arm 632 is not deformed. There arises a problem that it is difficult to make the disk device 600 thinner, in other words, to make the disk device 600 thinner.

  Further, in the configuration in which the clamp arm 632 is rotated by the cam portion 622 of the tray 620 about the line segment 630a as in the conventional disk device 600, the tip end portion of the clamp arm 632 that holds the clamper 631 in the height direction. In order to perform positioning, there are many related parts, and it is difficult to improve positional accuracy.

  The present invention solves at least one of the above-mentioned problems, can be applied to a sealed disk cartridge including a clamper and a single disk, and further to a disk cartridge not including a clamper, and the entire apparatus is thin. An object of the present invention is to provide a disk device having a clamp mechanism suitable for the manufacture.

The disc device of the present invention includes a disc having a signal recording surface, a disc motor having a turntable on which the disc is placed, a first position on which the disc is placed and the disc is loaded or unloaded, A tray that moves between a second position where the disk motor can rotate the disk, a head that records and / or reproduces signals on the disk, and clamps the disk between the turntable And a clamp mechanism that moves the clamper up and down between a retracted position away from the turntable and a clamp position for clamping the disk on the turntable, The clamp mechanism includes a clamper support surface that rotatably supports the clamper. A holder, a clamp arm that rotates in conjunction with the movement of the tray, and moves the clamper holder up and down in a direction perpendicular to the signal recording surface; an upper base that supports the clamper holder and the clamp arm; A holder urging spring that urges the clamper holder in a direction in which the clamper is lowered; and an arm urging spring that urges the clamp arm in a direction in which the clamper is raised. By moving between the first position and the second position, the clamp arm is rotated so that the clamper support surface of the clamper holder is substantially parallel to the signal recording surface of the disc. The clamper holder is raised and lowered while maintaining the state.

  In a preferred embodiment, a position of the clamper holder in a state where the clamper is raised to the retracted position is positioned by the upper base.

  In a preferred embodiment, the upper base positions the lowered position of the clamper holder in a state where the clamper is lowered to the clamp position.

  In a preferred embodiment, in a state where the clamper is raised to the retracted position, a portion of the clamper holder is biased to the upper base by a biasing force of the arm biasing spring. The ascent is stopped and the clamper holder is positioned in the height direction.

  In a preferred embodiment, in a state where the clamper is lowered to the clamp position, a part of the clamper holder is biased to the upper base by a biasing force of the holder biasing spring. The descent is stopped and the clamper holder is positioned in the height direction.

  In a preferred embodiment, in a state where the clamper is lowered to the clamp position, the clamp arm is separated from the clamper holder.

  In a preferred embodiment, in a state where the clamper holder is raised to the retracted position, a positioning contact portion provided on the clamper holder is engaged with a position restricting portion provided on the upper base. The clamper holder is positioned.

  In a preferred embodiment, in a state where the clamper holder is lowered to the clamp position, a positioning pin provided in the upper base is inserted into a positioning hole provided in the clamper holder. Perform positioning.

  In a preferred embodiment, each of the clamper holders has a plane that is perpendicular to a direction in which the tray moves and includes a rotation center axis of the clamper in a state where the clamper is lowered to the clamp position. At least one or more places in contact with the region are supported by the upper base.

  In a preferred embodiment, the holder biasing spring is a wire spring.

  In a preferred embodiment, the clamper holder includes a first engagement portion and a second engagement portion that receive a biasing force of the holder biasing spring and engage with the holder biasing spring.

  In a preferred embodiment, the first and second engaging portions are disposed symmetrically with respect to a plane that is parallel to the moving direction of the tray and includes the rotation center axis of the clamper.

  In a preferred embodiment, the first and second engaging portions are provided in the vicinity of a plane that is orthogonal to the direction in which the tray moves and includes the rotation center axis of the clamper.

  In a preferred embodiment, the tray can be loaded with a disk cartridge containing the disk.

  In a preferred embodiment, the disk cartridge has an internal clamper for clamping the disk between the disk cartridge and the turntable.

  In a preferred embodiment, when the disk cartridge having the internal clamper is loaded and the tray is moved to the second position, the clamper is not lowered to the clamp position, and the disk is moved by the internal clamper. Clamped to the turntable.

  In a preferred embodiment, the clamper does not descend by contacting the upper surface of the disk cartridge.

  In a preferred embodiment, when the disk cartridge having the internal clamper is loaded, the clamper holder abuts on the clamper and stops on the upper surface of the disk cartridge.

  In a preferred embodiment, a conical taper surface is provided on an outer peripheral surface of the clamper, and the tray moves when the tray moves between the first position and the second position. When the disk cartridge placed on the tray and the tapered surface abut, the clamper passes while contacting the upper surface of the disk cartridge.

  In a preferred embodiment, the tray includes a cam portion that contacts the clamp arm and rotates the clamp arm when the tray moves between the first position and the second position. Have

  In a preferred embodiment, the tray is provided with an opener that opens and closes the shutter of the disk cartridge, and when the tray moves between the first position and the second position, A cam portion that contacts the clamp arm and rotates the clamp arm is configured in the opener.

  In a preferred embodiment, the arm biasing spring is constituted by a part of the clamp arm.

  In a preferred embodiment, the clamp arm is rotatably held on the upper base by attaching the holder biasing spring to the upper base.

  In a preferred embodiment, the clamper holder is biased to the upper base by the holder biasing spring via an elastic member in a state where the clamper is lowered to the clamp position.

  In a preferred embodiment, the elastic member is a vibration damping member that reduces vibration.

  According to the disk device of the present invention, the clamp mechanism that moves the clamper up and down is divided into the clamper holder that holds the clamper and the clamp arm that is driven by the tray, so that the sealed type includes the clamper. When a disc cartridge is placed, the clamper and clamper holder are retracted above the cartridge to fit both a sealed disc cartridge that contains the clamper and a disc cartridge that does not contain the clamper. In addition, a stable and reliable clamping operation can be performed.

  In addition, when the clamper is lowered to the clamp position, the clamper holder that supports the clamper is configured with a contact part that is supported by the upper base before and after the disc device (tray insertion / discharge direction) with the rotation center of the clamper as the boundary. As a result, the clamper holder can be supported in the both-sided state, and the force to peel off the clamper can be distributed and received when the clamp is released. The rigidity of the holder is alleviated and the clamper holder can be made thin. As a result, the clamper can be made thinner, and the disk device can be made thinner.

  In addition, the clamp arm that is driven by the influence of the height accuracy of the tray and the clamper holder that holds the clamper are divided, and when the clamper is lowered to the clamp position, it is pressed against the upper base by a biasing spring. By separating the clamp arm from the clamper holder whose height is regulated, the clamper holder can be positioned accurately without being affected by the height accuracy of the tray with many related parts. it can. In addition, the positioning accuracy of the clamper holder in the planar direction can be improved by inserting the positioning pins provided in the upper base into the positioning holes provided in the clamper holder when descending.

  Further, by configuring the engaging portion of the urging spring for urging the clamper holder in the vicinity of the boundary by a plane perpendicular to the moving direction of the tray and including the rotation center axis of the clamper, the clamper holder can be When the height is regulated by both ends, the biasing force is applied evenly to the contact part between the clamper holder and upper base, improving the vibration resistance characteristics of the clamper holder and improving the height position accuracy of the clamper holder. You can plan.

  Also, the biasing spring that biases the clamper holder is composed of a wire spring, and the clamper holder is biased and the left and right sides of the clamper holder are supported by a wire structure, so that the clamper support surface of the clamper holder is relative to the disk surface. In addition, the clamper holder is moved up and down while maintaining a substantially parallel posture. In addition, the clamper holder can be moved up and down stably by positioning the clamper holder by engagement with the upper base when it is raised and lowered. be able to. As a result, the clamper and the clamper holder can be moved up and down with the minimum required lifting amount, and the disk device can be made thinner.

  Also, by configuring the biasing spring that supports the clamper holder with the wire structure to be separated from the left and right from the rotation center axis of the clamper, the clamper holder during the lifting and lowering operation can be prevented against variations in the left and right biasing springs that support the wire. Since the posture variation can be reduced, the lifting operation of the clamper and the clamper holder can be stably performed.

  Further, a conical taper surface is formed on the outer peripheral surface of the clamper, and the clamper is retracted to the upper surface of the cartridge by the taper surface when contacting the cartridge during the insertion / ejection operation. The clamper can be retracted with a minimum necessary retraction amount by passing while contacting, and the disk device can be made thin.

  In addition, a spring part is formed on a part of the clamp arm, and a biasing spring for biasing the clamper holder is attached to the upper base, so that the clamp arm is rotatably held on the upper base. Thus, the number of parts of the clamp mechanism can be greatly reduced, and the assembly of the disk device can be improved and the cost can be reduced.

  Also, when the clamper holder is lowered, an elastic member (such as a rubber sheet) is interposed between the clamper holder and the upper base to reduce the contact noise between metal parts due to vibration during high-speed rotation of the disk. The noise of the inside disk device can be reduced.

  Embodiments of a disk device of the present invention will be described below with reference to the drawings. The disk cartridge loaded in the disk device according to the embodiment of the present invention has the same configuration as the conventional disk cartridge 100, the sealed disk cartridge 200, and the open disk cartridge 300 shown in FIGS. 18 and 21 to 24 described above. belongs to. In the description of the embodiment, the same reference numerals as those of the conventional disk cartridge 100, the sealed disk cartridge 200, and the open disk cartridge 300 shown in FIGS. 18 and 21 to 24 indicate the same components. Since explanation is given, explanation here is omitted.

  First, the configuration of a disk device 500 according to an embodiment of the present invention will be described with reference to FIGS.

  FIG. 1 is an exploded perspective view showing a configuration of a disk device 500 according to an embodiment of the present invention. As shown in FIG. 1, the disk device 500 includes a traverse base 20, a spindle motor 30 that rotationally drives the disk 10, and an optical head 40 that performs recording and / or reproduction.

  The spindle motor 30 has a disk mounting surface 30 a for holding the disk 10 and is fixed to the traverse base 20. The optical head 40 is supported on the traverse base 20 so as to be movable along the guide shafts 41 and 42. A feed motor 43 is provided on the traverse base 20 and moves the optical head 40 along the guide shafts 41 and 42. The moving direction of the optical head is approximately the same as the radial direction of the disk 10.

  The disk device 500 further includes a base chassis 50, a clamp mechanism 60, and a tray 70. The base chassis 50 supports the traverse base 20 and guides the tray 70 to be movable in the directions of arrows 70A and 70B. The base chassis 50 is provided with a drive motor 51 for moving the tray 70 in the directions of arrows 70A and 70B, and a gear train 52 for decelerating and transmitting the drive force of the drive motor 51. The drive motor 51 and the gear train 52 are positioned below the tray 70, and the rack portion (not shown) formed on the back surface of the tray 70 and the gear train 52 are engaged with each other so that the tray 70 is moved to an arrow. Drive in 70A and 70B directions.

  The clamp mechanism 60 includes a clamper 61 that holds the disk 10 between the disk mounting surface 30a of the spindle motor 30, a clamper holder 62 that rotatably supports the clamper 61, a clamp arm 63 that moves the clamper holder 62 up and down, The upper base 64 that supports the clamper holder 62 and the clamp arm 63 and the urging spring 65 that urges the clamper holder 63 against the upper base 64 are attached to the base chassis 50. The detailed description of the clamp mechanism 60 will be described later.

  The tray 70 can be loaded with the conventional disk cartridge 100, the sealed disk cartridge 200, the open disk cartridge 300, and the disk 10 alone, a position for discharging the disk cartridge and the disk 10 to the outside of the disk device 500, a spindle Each disk cartridge 100, 200, 300 and the disk 10 are transported to and from a position where the disk 10 in each disk cartridge can be mounted on the disk mounting surface 30a of the motor 30.

  The tray 70 is provided with guide walls 71a and 71b having a guide function when the disk cartridges 100, 200, and 300 are placed. The tray 70 is provided with positioning pins 72a and 72b that engage with the positioning holes of the cartridge, and the positioning pins 72a and 72b engage with the positioning holes of the cartridge, whereby the cartridge is positioned on the tray 70. Is done.

  In addition, the tray 70 is provided with a circular concave portion 70r for directly placing the disk 10 not stored in the cartridge. An opening 70w for allowing the spindle motor 30 and the optical pickup 40 to approach the disk 10 is provided at the bottom of the recess 70r.

  Further, in order to make it easier to take out the cartridge placed on the tray 70, a notch 70s for exposing a part of the side surface of the cartridge is provided on the front surface of the tray 70.

  On the tray 70, an opener 75 for opening and closing the cartridge shutter 103 of the conventional disk cartridge 100 is provided so as to be movable in the directions of arrows 75A and 75B. The opener 75 engages with an opener cam 66 (FIG. 2) provided on the back surface of the upper base 61, which will be described later, and opens and closes the cartridge shutter 103 in accordance with the insertion / discharge operation of the tray 70.

  Further, the disk device 500 rotates a rotating body 230, 330 of the sealed disk cartridge 200 and the open disk cartridge 300 in accordance with the insertion / ejection operation of the tray 70, thereby opening and closing a shutter of the cartridge. Is provided.

  The base chassis 50 is supported by the frame 510 via a damper made of an elastic member such as rubber for buffering an impact on the apparatus. An upper housing 520 and a lower housing 530 that form the outer shell of the disk device 500 are attached to the frame 510, and the outer shell of the disk device 500 is configured.

  Next, the configuration of the clamp mechanism 60 will be described with reference to FIGS.

  FIG. 2 is an exploded perspective view showing the configuration of the clamp mechanism 60 in the embodiment of the present invention, and FIG. 3 is a plan view showing the configuration of the clamp mechanism 60 in the embodiment of the present invention.

  4A and 4B are views for explaining the positioning state of the clamper holder 62 in the embodiment of the present invention. FIG. 4A shows the positioning state of the clamper holder 62 and the upper base 64 when lowered, and FIG. 4B shows the clamper when raised. The positioning state of the holder 62 and the upper base 64 is shown.

FIG. 5 is an operation diagram for explaining the lifting and lowering operation of the clamp mechanism 60 in the embodiment of the present invention.
(A) shows a state during loading of the tray 70, and (b) shows a loading completion state of the tray 70.

  The clamp mechanism 60 performs a lifting / lowering operation to raise / lower the clamper 61 in the arrow 60A direction and the arrow 60B direction in conjunction with the insertion / ejection operation of the tray 70 in the arrow 70A direction and the arrow 70B direction. As shown in FIG. 2, the clamp mechanism 60 includes a clamper 61 that holds the disk 10 between the disk mounting surface 30 a of the spindle motor 30, and a clamper holder 62 that rotatably supports the clamper 61 with respect to the spindle motor 30. The clamp arm 63 that moves the clamper holder 62 up and down in the direction of the arrow 60A and the direction of the arrow 60B in conjunction with the insertion / discharge operation of the tray 70, the upper base 64 that supports the clamper holder 62 and the clamp arm 63, and the clamp holder An urging spring 65 that urges 62 against the upper base 64 and an opener cam 66 that engages with an opener 75 supported by the tray 70 are provided.

  The clamper 61 includes an upper clamper 61a, a lower clamper 61b, and a magnetic plate 61c that attracts a magnet (not shown) provided on the disk mounting surface 30a. The upper clamper 61a and the lower clamper 61b By sandwiching the clamper holder 62, the clamper 61 is rotatably supported by the clamper holder 62. In addition, a conical tapered surface 61d is formed on the outer peripheral surface of the lower clamper 61b, and in the description of the clamping operation described later, the clamper 61 is retracted in the direction of the arrow 60A when it comes into contact with the cartridge. .

  The clamper holder 62 has a clamper support surface 62p that rotatably supports the clamper 61. The clamper holder 62 comes into contact with the lifting contact portion 63b of the clamp arm 63 so that the clamp arm 63 rotates in the direction of the arrow 60A. Ascending / descending in the direction of arrow 60B. Further, as shown in FIGS. 3 and 4, the clamper holder 62 is positioned to engage the upper base 64 to position the clamper holder 62 when it is raised in the direction of the arrow 60 </ b> A and lowered in the direction of the arrow 60 </ b> B. Each positioning part of the hole 62a, the raising / lowering guide part 62b, the 1st positioning contact part 62c, and the 2nd positioning contact part 62d is provided.

  Further, when the clamper 61 is lowered, the clamper holder 62 is orthogonal to the tray 70 insertion / ejection direction (arrow 70A direction / arrow 70B direction) and has a rotation center axis of the clamper 61 as shown in FIG. With the line segment L included as a boundary, the upper base 64 abuts at the abutting portions S1 and S2 (shaded areas in the drawing) and is supported by the upper base 64. As a result, as will be described later, the clamper holder 62 is configured to receive a force for peeling the clamper 61 from the disk mounting surface 30a in a both-sided state.

  The clamp arm 63 is secured by a biasing spring 65 by attaching a biasing spring 65 to a holding portion 64e provided on the upper base 64, and is clamped in the direction of the arrow 63A and the direction of the arrow 63B around the line segment 64f. It is held rotatably. In addition, a spring portion 63c is integrally formed with the clamp arm 63, and the clamp arm 63 is rotated in the direction of arrow 63A by the urging force of the spring portion 63c, and the clamper holder 62 is raised in the direction of arrow 60A. .

  The upper base 64 supports the clamper holder 62 and the clamp arm 63, and performs positioning when the clamper holder 62 is raised and lowered. Further, as shown in FIGS. 3 and 4, the upper base 64 has a positioning hole 62 a that is a positioning portion of the clamper holder 62, a lifting guide portion 62 b, a first positioning contact portion 62 c, and a second positioning contact. A positioning pin 64a, a guide portion 64b, a first position restricting portion 64c, and a second position restricting portion 64d that are respectively engaged with the portion 62d are provided.

  The positioning of the clamper holder 62 by the upper base 64 will be described. As shown in FIGS. 3 and 4A, when the clamper holder 62 is lowered in the direction of the arrow 60B, the upper is inserted into the positioning hole 62a of the clamper holder 62. By positioning the positioning pin 64a of the base 64, positioning in the direction of the arrow 70A and the direction of the arrow 70B is performed. Further, the engagement of the raising / lowering guide portion 62b of the clamper holder 62 and the guide portion 64b of the upper base 64 performs positioning in the directions of the arrows 75A and 75B, and the clamper holder 62 when lowered is positioned by the upper base 64. Done.

  On the other hand, as shown in FIGS. 3 and 4B, when the clamper holder 62 is raised in the direction of the arrow 60A, the lifting guide 62b and the first positioning contact 62c of the clamper holder 62 and the upper base The 64 guide portions 64b and the first position restricting portion 64c are engaged with each other, whereby positioning in the directions of the arrows 75A and 75B is performed. Further, the second positioning contact portion 62d of the clamper holder 62 and the second position restricting portion 64d of the upper base 64 are engaged, whereby positioning in the directions of the arrows 70A and 70B is performed, and the clamper holder when ascending 62 is positioned by 64 in the upper base.

  In the present embodiment, the second positioning contact portion 62d of the clamper holder 62 is configured at two locations apart in the width direction (arrow 75A direction and arrow 75B direction) of the disk device, and the second base 64 of the upper base 64 is configured. By engaging with the position restricting portion 64d, the influence of the positional deviation due to the rotation in the plane parallel to the disk 10 is suppressed. Further, the lifting guide 62b of the clamper holder 62 and the guide 64b of the upper base 64 are always engaged during the lifting operation of the clamper holder 62, and during the lifting operation, the clamper holder 62 is moved in the width direction (in the direction of the arrow 75A and Guide in the direction of arrow 75B).

  The urging spring 65 is constituted by a wire spring, engages with the first and second engaging portions 62s and 62t provided on the clamper holder 62, urges the clamper holder 62, and has a wire structure. The holder 62 is supported. With this wire support structure, it is possible to move up and down without the need for a rotating shaft as in the prior art, and as described later, the clamper support surface 62p of the clamper holder 62 is maintained in a substantially parallel posture with respect to the surface of the disk 10. A mechanism that moves up and down is constructed.

  Further, as described above, the urging spring 65 is attached to the holding portion 64e of the upper base 64, thereby holding the clamp arm 63 so as to be rotatable in the arrow 63A direction and the arrow 63B direction. The urging spring 65 constituted by a wire spring is pressed by the clamp arm 63 between the holding portion 64e of the upper base 64 and the first and second engaging portions 62s and 62t of the clamper holder 62. An urging force is generated by urging the clamper holder 62 in the direction of the arrow 60B.

  Further, the first and second engaging portions 62s and 62t of the clamper holder 62 are configured in the vicinity of a line segment L that is a boundary between the contact portions S1 and S2 of the clamper holder 62 and the upper base 64 as shown in FIG. Has been. Thereby, when the clamper holder 62 is urged to the upper base 64, the urging force is applied equally to the contact portions S1 and S2. Further, the first and second engaging portions 62 s and 62 t of the clamper holder 62 are configured at positions that are orthogonal to the line segment L and symmetrically separated from the plane including the rotation center of the clamper 61. Even when the biasing force of the biasing spring 65 acting on the first and second engaging portions 62s and 62t is unbalanced due to the variation of the biasing spring 65, the posture of the clamper holder 62 is increased. Reduce variation.

  The opener cam 66 is attached to the back surface of the upper base 64, engages with a roller portion 76 provided on the opener 75, and synchronizes with the movement of the tray 70 in the directions of arrows 70A and 70B. And move in the 75B direction. When the above-described conventional disc cartridge 100 shown in FIG. 18 is placed on the tray 70 by the movement of the opener 75, the opener 75 and the cartridge shutter 103 are engaged, and the tray 70 is inserted / discharged. In response, the cartridge shutter 103 is opened and closed. Further, the opener 75 is provided with a cam portion 75a that contacts the contact portion 63a of the clamp arm 63, and the cam portion 75a contacts the contact portion 63a of the clamp arm 63 as shown in FIG. As a result, the clamp arm 63 rotates in the direction of the arrow 63B against the urging force of the spring portion 63c, and the clamper holder 62 raised by the clamp arm 63 is moved by the urging force of the urging spring 65 to the arrow 60B. Descend in the direction.

  Further, in the clamp mechanism 60 in the present embodiment, as shown in FIG. 5A, when the clamper holder 62 is lifted in the direction of the arrow 60 </ b> A, the biasing force of the biasing spring 65 is the first of the clamper holder 62. By acting on the first and second engaging portions 62 s and 62 t, the clamper holder 62 rotates in the direction of the arrow 63 </ b> B about the lifting contact portion 63 b of the clamp arm 63. The first positioning contact portion 62c of the clamper holder 62 is brought into contact with the first position restricting portion 64c, so that the posture of the clamper holder 62 when it is raised is substantially parallel to the surface of the disk 10. In other words, the clamper 61 can be lifted substantially parallel to the surface of the disk 10 by making the clamper support surface 62p of the clamper holder 62 at the time of lifting substantially parallel to the surface of the disk 10. Therefore, the clamper holder 62 and the clamper holder 62 can be lifted and lowered with the minimum required lift by raising and lowering the clamper holder 62 substantially parallel to the surface of the disk 10, and the disk device 500 can be made thinner. Can do.

  Further, as shown in FIG. 5B, when the clamper holder 62 is lowered in the direction of the arrow 60B, the positioning hole 62a and the guide portion 62b provided in the clamper holder 62 as described above, and the upper base The clamper holder 62 is positioned with respect to the upper base 64 by engaging the positioning pins 64a and the guide portions 64b provided on the upper 64, and the clamper holder 62 is further moved by the biasing force of the biasing spring 65. 64, the clamper holder 62 is positioned in the height direction (arrow 60A direction and arrow 60B direction) by the upper base 64. Then, by clamping the disk 10 between the clamper 61 and the disk mounting surface 30a of the spindle motor 30, the clamper 61 secures a predetermined clearance with respect to the clamper support surface 62p of the clamper holder 62 and becomes rotatable. .

  With the configuration described above, the clamp mechanism 60 according to the present embodiment maintains the posture of the clamper holder 62 in a substantially parallel position with respect to the surface of the disk 10 by the rotation of the clamp arm 63 as shown in FIG. The clamper 61 is raised / lowered in the direction of the arrow 60A and the arrow 60B by being raised / lowered in the direction of the arrow 60A and the direction of the arrow 60B.

  The position accuracy of the clamper 61 is required when the clamper holder 62 is lowered. What is the operation of raising and lowering the clamper 631 by the rotation of the clamp arm 632 as in the conventional disk device 600 shown in FIG. Unlike the conventional disk apparatus 600, the clamper holder 62 in this embodiment is supported by a wire support structure with an urging spring 65 and does not have a pivot shaft that serves as a reference for the lifting operation. The guide of the clamper holder 62 is extremely insufficient as compared with the conventional disk device 600. For this reason, in the clamp mechanism 60 according to the present embodiment, when the clamper holder 62 is lowered, the positioning pin 64a of the upper base 64 and the positioning hole 62a of the clamper holder 62 are prevented from being unable to engage with each other due to the positional deviation at the time of ascent. Therefore, positioning is performed even when the clamper holder 62 is raised, and the clamper holder 62 when lowered is correctly positioned on the upper base 64.

  Therefore, the clamp mechanism 60 according to the present embodiment positions the clamper holder 62 by engaging with the upper base 64 at the time of ascent and descent as described above, so that the clamper holder 62 is substantially aligned with the surface of the disk 10. The structure which raises / lowers while maintaining a parallel attitude | position is implement | achieved, By this, the clamper 61 and the clamper holder 62 can be raised / lowered by the minimum required raising / lowering amount, and thickness reduction of the disc apparatus 500 can be achieved.

  Next, the operation of the clamp mechanism 60 configured as described above will be described. The disk device 500 is an apparatus capable of loading three types of disk cartridges, the conventional disk cartridge 100, the sealed disk cartridge 200, and the open disk cartridge 300 shown in FIGS. Here, the conventional disk cartridge 100 and the open disk cartridge 300 do not include a clamper, but the sealed disk cartridge 200 includes a clamper inside the cartridge. Therefore, when the conventional disk cartridge 100 and the open disk cartridge 300 are loaded in the disk device 500, the clamp mechanism 60 clamps the disk 10 using the clamper 61 shown in FIG. When 200 is loaded, the operation of retracting the clamper 61 to the outside of the cartridge is performed without using the clamper 61.

  Hereinafter, the operation of the clamping mechanism 60 when the sealed disk cartridge 200 that does not use the clamper 61, the open disk cartridge 300 that clamps the disk 10 by the clamper 61, and the conventional disk cartridge 100 is loaded will be referred to. While explaining.

  First, the operation of the clamp mechanism 60 when the sealed disk cartridge 200 having the internal clamper 240 inside the cartridge is placed on the tray 70 will be described with reference to FIGS.

  6 to 9 show the operation state of the clamp mechanism 60 when the tray 70 on which the sealed disk cartridge 200 is placed is loaded. FIGS. 6 and 7 show the state in which the tray 70 is in the middle of loading. FIG. 8 shows a state in which the tray 70 is inserted into the disk device 500, and FIG. 9 shows a loading completion state in which the tray 70 is inserted and the disk 10 is clamped. As the sealed disk cartridge 200 placed on the tray 70 is inserted in the direction of the arrow 70A, the shutter opening / closing mechanism 80 (see FIG. 1) opens the shutter portion 220 and exposes the opening 212w. Conversely, as the tray 70 is ejected in the direction of the arrow 70B, the shutter portion 220 is closed and the opening 212w is closed.

  When the sealed disk cartridge 200 is placed on the tray 70 and the tray 70 is inserted in the direction of the arrow 70A, it is supported by the clamper support surface 62p of the clamper holder 62 rising in the direction of the arrow 60A as shown in FIG. The tapered surface 61 of the clamper 61 is in contact with the sealed disk cartridge 200.

  Further, when the tray 70 is inserted in the direction of the arrow 70A, the clamper 61 is pushed up in the direction of the arrow 60A due to the inclination of the tapered surface 61d, and the clamper 61 rides on the upper surface of the sealed disk cartridge 200 as shown in FIG. At this time, the clamper holder 62 is raised in the direction of the arrow 60A by the clamp arm 63, and only the clamper 61 is raised in the direction of the arrow 60A in the clamper holder 62.

  Further, when the tray 70 is inserted in the direction of the arrow 70A, the clamper 61 passes while contacting the upper surface of the sealed disk cartridge 200, and when the cam portion 75a of the opener 75 contacts the contact portion 63a of the clamp arm 63, FIG. 8, the contact portion 63a of the clamp arm 63 is lifted in the direction of the arrow 60A by the cam portion 75a of the opener 75, and the clamp arm 63 is attached to the spring portion 63c (see FIG. 2) of the clamp arm 63. It rotates in the direction of arrow 63B against the force. At this time, since the clamper 61 is retracted to the upper surface of the sealed disk cartridge 200, the clamper holder 62 is in contact with the clamper 61 as the clamp arm 63 rotates by the biasing force of the biasing spring 65. After descending in the direction of the arrow 60B and contacting, it stops above the sealed disk cartridge 200, as with the clamper 61. That is, only the clamp arm 63 is rotated, and the clamper 61 and the clamper holder 62 are retracted to the upper surface of the sealed disk cartridge 200 in a state where the biasing force of the biasing spring 65 is received.

  Therefore, in the integrated clamp arm 632 such as the conventional disk device 600 shown in FIG. 19, the sealed disk cartridge 200 becomes an obstacle, and the clamp arm 632 cannot be completely rotated to the clamp position. In the clamp mechanism 60 of the embodiment, a clamper holder 62 that is a holder part that holds the clamper 61 and a clamp arm 63 that is a drive part that lifts and lowers the clamper 61 are configured to be divided, so that the sealed disk cartridge 200 is configured. Even in this case, the clamper 61 can be retracted without any problem.

  When the insertion of the tray 70 is completed, as shown in FIG. 9, the traverse base 20 rises in the direction of the arrow 60 </ b> A and is included in the disk mounting surface 30 a of the spindle motor 30 and the sealed disk cartridge 200. The disc 10 is clamped with the internal clamper 240, and the insertion operation of the sealed disc cartridge 200 is completed.

  When the sealed disk cartridge 200 is ejected, it operates in the reverse order of FIGS. That is, when the traverse base 20 descends in the direction of the arrow 60B from the state of FIG. 9, the disc 10 is released from the clamp, and in the state of FIG. 8, the tray 70 starts moving in the direction of the arrow 70B. When the contact portion 63a of 63 and the cam portion 75a of the opener 75 are separated from each other, as shown in FIG. 7, the clamp arm 63 is rotated in the direction of the arrow 63A, and the clamper holder 62 is raised in the direction of the arrow 60A. Retained. Then, the clamper 61 passes while contacting the upper surface of the sealed disk cartridge 200, the tray 70 is further ejected in the direction of the arrow 70B, the clamper 61 is separated from the sealed disk cartridge 200, and passes through the state of FIG. The tray 70 is discharged to the position of, and the discharge operation of the sealed disk cartridge 200 is completed.

  Next, the operation of the clamp mechanism 60 when the open disk cartridge 300 having the cartridge upper surface opened and the upper surface of the disk 10 exposed is placed on the tray 70 will be described with reference to FIGS.

  10 to 13 show the operation state of the clamp mechanism 60 when the tray 70 on which the open disk cartridge 300 is placed is loaded. FIGS. 10 and 11 show the state in which the tray 70 is in the middle of loading. 12 shows a state in which the tray 70 is inserted into the disk device 500, and FIG. 13 shows a loading completion state in which the tray 70 is inserted and the disk 10 is clamped. As the open disc cartridge 300 placed on the tray 70 is inserted in the direction of the arrow 70A, the shutter opening / closing mechanism 80 (see FIG. 1) opens the shutter portion 320 and exposes the opening 312w. Conversely, as the tray 70 is ejected in the direction of the arrow 70B, the shutter portion 320 is closed and the opening 312w is closed.

  When the open disk cartridge 300 is placed on the tray 70 and the tray 70 is inserted in the direction of the arrow 70A, it is supported by the clamper support surface 62p of the clamper holder 62 rising in the direction of the arrow 60A as shown in FIG. The tapered surface 61 of the clamper 61 is in contact with the open disc cartridge 300.

  Further, when the tray 70 is inserted in the direction of the arrow 70A, the clamper 61 is pushed up in the direction of the arrow 60A by the inclination of the taper surface 61d, and then inside the disc opening portion 300w of the open type disc cartridge 300 as shown in FIG. Then, the clamper 61 descends in the direction of the arrow 60B and returns to the original state supported by the clamper support surface 62p of the clamper holder 62 that is rising. In the state where the clamper holder 62 is raised by the clamp arm 63, the clamper 61 is not in contact with the upper surface of the disk 10.

  Further, when the tray 70 is inserted in the direction of the arrow 70A, the clamper 61 is held by the clamper holder 62 inside the disc opening portion 330w of the open disc cartridge 300 and passes above the disc 10, and the cam portion 75a of the opener 75 is When contacting the contact portion 63a of the clamp arm 63, the contact portion 63a of the clamp arm 63 is lifted in the direction of the arrow 60A by the cam portion 75a of the opener 75, as shown in FIG. The clamp arm 63 rotates in the direction of the arrow 63B against the urging force of the spring portion 63c (see FIG. 2). At this time, unlike the case of the above-described sealed disk cartridge 200, the clamper holder 62 is lowered in the direction of the arrow 60B by the urging force of the urging spring 65 as the clamp arm 63 rotates, as described above. Are positioned by the positioning pins 64a and supported by the upper base 64. Accordingly, the clamper 61 is also lowered. At this time, the contact between the clamper holder 62 and the raising / lowering contact portion 63b of the clamp arm 63 is released, the clamp arm 63 is separated from the clamper holder 62, and the clamper holder 62 is moved in the height direction (arrow) only by the upper base 64. 60A direction / arrow 60B direction).

  Accordingly, as shown in FIGS. 19 and 20, in the conventional disk device 600, the clamp arm 632 is rotated around the line segment 630a by the cam portion 622 of the tray 620, so that the tip of the clamp arm 632 that holds the clamper 631 is used. In order to perform positioning in the height direction, there are many related parts, and it is difficult to improve the positional accuracy. However, in the clamp mechanism 60 of this embodiment, when the clamper holder 62 is lowered, the opener Since the clamp arm 63 driven under the influence of the height accuracy of the 75 cam portions 75a is separated from the clamper holder 62, the clamper holder 62 is pressed against the upper base 64 by the biasing spring 65 to regulate the height. By doing so, the clamper ho is not affected by the height accuracy of the cam portion 75a of the opener 75 having many related parts. Da 62 a height positioning can be accurately performed, compared with the conventional disk apparatus 600, I am possible to improve the high positional accuracy of the clamper holder 62.

  In the clamp mechanism 60 of the present embodiment, a clamper holder 62 that is a holder part that holds the clamper 61 and a clamp arm 63 that is a drive part that raises and lowers the clamper 61 are configured separately. By linking the two members with the spring 65, the same operation as that of the integrated clamp arm 632 as in the conventional disk device 600 shown in FIGS. 19 and 20 is realized.

  When the insertion of the tray 70 is completed, as shown in FIG. 13, the traverse base 20 is raised in the direction of the arrow 60A, and the disk 10 is clamped by the disk mounting surface 30a of the spindle motor 30 and the clamper 61. Then, the insertion operation of the open disk cartridge 200 is completed.

  When the open disk cartridge 300 is ejected, it operates in the reverse order of FIGS. That is, when the traverse base 20 is lowered in the direction of the arrow 60B from the state of FIG. 13, the clamp of the disk 10 is released. At this time, as shown in FIGS. 19 and 20, in the conventional disk device 600, the clamp arm 632 is supported in a cantilevered state by the upper base 630 and holds the clamper 631, so that the traverse base 640 is provided. When the clamper 631 is peeled off from the spindle motor 650 by lowering, the clamping arm 632 in a cantilever state receives the force to peel off the clamper 631, so that the plate thickness is set so that the clamp arm 632 is not deformed. Although it is necessary to increase the rigidity to increase the rigidity, in this embodiment, as shown in FIG. 3, the upper base 64 is also provided on the front side of the disk device (the discharge side of the tray 70) with respect to the rotation center of the clamper 61. Since the clamper holder 62 constitutes a support portion, the clamper holder 62 is L a configuration which is supported on the upper base 64 at both ends state by the abutment portion S1, S2 to the boundary.

  For this reason, since the force for peeling off the clamper 631 can be received in a distributed manner, the rigidity of the clamper holder 62 is relaxed compared to the cantilevered support structure of the conventional disk device 600. Therefore, the plate thickness of the clamper holder 62 can be made thinner than the clamp arm 632 of the conventional disk device 600. Furthermore, in the present embodiment, the clamper holder 62 can also be formed in a conical shape (see FIG. 2), so that the rigidity of the clamper holder 62 can be improved, so that the thickness of the clamper holder 62 can be reduced. It becomes. Therefore, since the clamper holder 62 interposed between the upper clamper 61a and the lower clamper 61b is thinned, the clamper 61 can be thinned, in other words, the disk device 500 can be thinned.

  When the traverse base 20 has been lowered and the state shown in FIG. 12 is reached, the tray 70 starts moving in the direction of the arrow 70B, and the contact portion 63a of the clamp arm 63 and the cam portion 75a of the opener 75 are separated from each other. As shown in FIG. 11, the clamp arm 63 is rotated in the direction of the arrow 63 </ b> A, the clamper holder 62 is held in the state of being raised in the direction of the arrow 60 </ b> A, and the clamper 61 is raised to a position away from the upper surface of the disk 10. Then, the tray 70 is discharged in the direction of the arrow 70B, the clamper 61 passes over the disk 10 in the disk opening portion 300w of the open disk cartridge 300, and the tapered surface 61 of the clamper 61 and the open disk cartridge 300 come into contact with each other. The clamper 61 is pushed up in the direction of the arrow 60A by the inclination of the taper surface 61d, and then held again by the clamper holder 62 as shown in FIG. The ejection operation of the cartridge 300 is completed.

  Next, since the disk device 500 of the present embodiment is also compatible with the conventional disk cartridge 100 having a U-shaped shutter, the clamping mechanism when the conventional disk cartridge 100 is placed on the tray 70. 60 will be described with reference to FIGS.

  14 to 17 show the operating state of the clamp mechanism 60 when the tray 70 on which the conventional disk cartridge 100 is placed is loaded. FIGS. 14 and 15 show the state in which the tray 70 is in the middle of loading. 16 shows a state in which the tray 70 is inserted into the disk device 500, and FIG. 17 shows a loading completion state in which the tray 70 is inserted and the disk 10 is clamped. As the conventional disc cartridge 100 placed on the tray 70 is inserted in the direction of the arrow 70A, the opener 75 moves in the direction of the arrow 75A (see FIG. 2) along the cam surface of the opener cam 66. The cartridge shutter 103 is opened, and the opening 101w is exposed. Conversely, as the tray 70 is ejected in the direction of the arrow 70B, the cartridge shutter 103 is closed and the opening 101w is closed.

  When the conventional disc cartridge 100 is placed on the tray 70 and the tray 70 is inserted in the direction of the arrow 70A, it is supported on the clamper support surface 62p of the clamper holder 62 rising in the direction of the arrow 60A as shown in FIG. The clamper 61 enters the opening 101 w of the conventional disk cartridge 100 and passes above the bridge portion 104. When the cartridge shutter 103 is in the middle of opening, the taper surface 61d of the clamper 61 comes into contact with the cartridge shutter 103, and the clamper 61 is pushed up in the direction of the arrow 60A as in the case of the open disk cartridge 300 described above. .

  Further, when the tray 70 is inserted in the direction of the arrow 70A, as shown in FIG. 15, the clamper 61 passes while being supported by the clamper holder 62 rising in the opening 101w of the conventional disk cartridge 100. When the cartridge shutter 103 is in the middle of opening at the time of FIG. 14, the clamper 61 pushed up in the direction of the arrow 60A when the cartridge shutter 103 is opened moves down in the direction of the arrow 60B and rises. 15 is supported by the clamper holder 62. In the state where the clamper holder 62 is raised by the clamp arm 63, the clamper 61 is not in contact with the upper surface of the disk 10.

  Further, when the tray 70 is inserted in the direction of the arrow 70A, the clamper 61 is supported by the clamper holder 62 in the opening 101w of the conventional disc cartridge 100 and passes above the disc 10, and the cam portion 75a of the opener 75 is clamped by the clamp arm. When abutting against the abutting portion 63a of 63, the abutting portion 63a of the clamp arm 63 is lifted in the direction of the arrow 60A by the cam portion 75a of the opener 75, as shown in FIG. The clamper holder 62 rotates against the biasing force of the spring portion 63c (see FIG. 2) 63 in the direction of the arrow 63B, and the clamper holder 62 is biased by the biasing spring 65 as in the case of the open disk cartridge 300 described above. Due to the force, the clamp arm 63 is lowered in the direction of the arrow 60B as the clamp arm 63 is rotated, and the position is determined as described above. Is supported on the upper base 64 are positioned by pins 64a. Accordingly, the clamper 61 is also lowered. At this time, the contact between the clamper holder 62 and the raising / lowering contact portion 63b of the clamp arm 63 is released, the clamp arm 63 is separated from the clamper holder 62, and the clamper holder 62 is supported in the height direction only by the upper base 64. Is done.

  When the insertion of the tray 70 is completed, as shown in FIG. 17, the traverse base 20 is raised in the direction of the arrow 60A, and the disk 10 is clamped by the disk mounting surface 30a of the spindle motor 30 and the clamper 61. Then, the insertion operation of the conventional disk cartridge 100 is completed.

  When the conventional disk cartridge 100 is ejected, it operates in the reverse order of FIGS. That is, when the traverse base 20 is lowered in the direction of the arrow 60B from the state shown in FIG. 17, the disc 10 is released from the clamp as in the case of the open disc cartridge 300 described above, and when the state shown in FIG. 70 starts moving in the direction of the arrow 70B, and the contact portion 63a of the clamp arm 63 and the cam portion 75a of the opener 75 are separated from each other, whereby the clamp arm 63 is rotated in the direction of the arrow 63A as shown in FIG. The clamper holder 62 is held in a state where it is raised in the direction of the arrow 60A. Then, the tray 70 is ejected in the direction of the arrow 70B, and the clamper 61 passes over the disk 10 in the opening 101w of the conventional disk cartridge 100 and passes over the bridge portion 104 as shown in FIG. The tray 70 is ejected to the position, and the ejection operation of the open disk cartridge 300 is completed. When the cartridge shutter 103 is in the middle of opening at the time of FIG. 14, when the cartridge shutter 103 is closed, the clamper 61d of the clamper 61 comes into contact, and the clamper 61 is pushed up in the direction of the arrow 60A. The tray 70 is discharged in the direction of the arrow 70B while sliding on the upper surface of the shutter 103.

  When the disc 10 alone is placed on the tray 70, as shown in FIG. 5, since there is no cartridge, the clamper 61 during the insertion / ejection operation of the tray 70 does not move up and down due to contact with the cartridge. Only the operation of the clamping mechanism 60 that clamps or releases the disk 10 is the same as that of the conventional disk cartridge 100 described above, and the description thereof is omitted.

  From the above description, according to the disk device of the present invention, even in the sealed disk cartridge 200 including the clamper, the conventional disk having the open disk cartridge 300 that does not include the clamper and the shutter having the U-shaped cross section. Even the cartridge 100 can correctly clamp the disk 10 to the disk mounting surface 30a in the disk device 500.

  Further, the clamper holder 62 that supports the clamper 61 is stably supported by the upper base 64 in a state where it is supported at both ends with the rotation center of the clamper 61 as a boundary, so that the clamper holder 62 can be made thin, and the clamper 61 itself Can be made thinner.

  In addition, the clamper holder 62 that supports the clamper 61 is configured to move the clamper holder 62 up and down substantially parallel to the surface of the disk 10 by the wire support structure by the biasing spring 65. Since the clamper 61 can be lifted and lowered by the lift amount, the entire apparatus can be thinned.

  In this embodiment, the clamp arm 63 is rotated by the opener 75 that opens and closes the cartridge shutter 103 of the conventional disk cartridge 100 to configure the clamp mechanism 60. However, the present invention is not limited to this. A similar effect can be obtained even if the tray 70 has a contact portion for rotating the clamp arm 63.

  In this embodiment, the conventional cartridge 100, the open cartridge 300, and the disk 10 that require the clamper 61 are used. However, the present invention is not limited to this. The clamp mechanism 60 of the present invention can be applied even to an apparatus corresponding to at least one of them.

  In this embodiment, the clamper holder 62 is directly supported by the upper base 64 when the clamper holder 62 is lowered. However, the present invention is not limited to this. For example, the contact portion S1 between the clamper holder 62 and the upper base 64 is used. , S2 may be provided with an elastic member (such as a rubber sheet) to silence the contact sound between the metal parts due to vibration during high-speed rotation of the disk.

  In the present embodiment, the urging spring 65 has the function of holding the clamp arm 63 on the upper base 64 and the function of urging the clamper holder 62. However, the present invention is not limited to this. For the purpose of improvement, the clamp arm 63 may be held by a separate member.

  In this embodiment, the positioning pins 72a and 72b are formed on the tray 70 to position the cartridge with respect to the tray 70. However, the positioning pins that engage with the position holes of the cartridge are on the tray 70. It may not be fixed to. For example, a positioning pin may be configured on the traverse base 20 and the cartridge may be positioned on the tray 70 as a structure having a hole through which the positioning pin can pass.

  Further, the height of the outer dimensions of the disk device 500 constituted by the upper housing 520 and the lower housing 530 may be 41.3 mm, for example. The width of the outer dimension may be 146 mm, for example. The depth of the outer dimension may be 190 mm, for example.

  The disk device of the present invention is compatible with a disk device corresponding to a sealed disk cartridge in which a clamper is included, a disk unit and a disk cartridge in which a clamper is not included, and stably and reliably performs a disk clamping operation with a simple configuration. It can be carried out.

It is a disassembled perspective view which shows the structure of the disc apparatus in embodiment of this invention. It is a disassembled perspective view which shows the structure of the clamp mechanism in embodiment of this invention. It is a top view which shows the structure of the clamp mechanism in embodiment of this invention. FIGS. 4A and 4B are diagrams illustrating a positioning state of a clamper holder according to an embodiment of the present invention, where FIG. 5A illustrates a state in which the clamper holder is lowered, and FIG. FIG. 5 is an operation diagram for explaining a clamping operation of the clamping mechanism according to the embodiment of the present invention, where (a) shows a state during tray loading, and (b) shows a tray loading completion state. It is an operation | movement figure explaining the clamp operation | movement of a clamp mechanism at the time of loading a sealed disc cartridge in a tray. It is an operation | movement figure explaining the clamp operation | movement of a clamp mechanism at the time of loading a sealed disc cartridge in a tray. It is an operation | movement figure explaining the clamp operation | movement of a clamp mechanism at the time of loading a sealed disc cartridge in a tray. It is an operation | movement figure explaining the clamp operation | movement of a clamp mechanism at the time of loading a sealed disc cartridge in a tray. It is an operation | movement figure explaining the clamp operation | movement of a clamp mechanism when an open type disk cartridge is loaded in the tray. It is an operation | movement figure explaining the clamp operation | movement of a clamp mechanism when an open type disk cartridge is loaded in the tray. It is an operation | movement figure explaining the clamp operation | movement of a clamp mechanism when an open type disk cartridge is loaded in the tray. It is an operation | movement figure explaining the clamp operation | movement of a clamp mechanism when an open type disk cartridge is loaded in the tray. It is an operation | movement diagram explaining the clamp operation | movement of a clamp mechanism when the conventional type disc cartridge is loaded in the tray. It is an operation | movement diagram explaining the clamp operation | movement of a clamp mechanism when the conventional type disc cartridge is loaded in the tray. It is an operation | movement diagram explaining the clamp operation | movement of a clamp mechanism when the conventional type disc cartridge is loaded in the tray. It is an operation | movement diagram explaining the clamp operation | movement of a clamp mechanism when the conventional type disc cartridge is loaded in the tray. It is a perspective view which shows the external appearance of a conventional disc cartridge. It is a perspective view which shows the structure of the conventional disc apparatus which can load a conventional disc cartridge. FIG. 5 is an operation diagram for explaining a clamping operation of a conventional disk device capable of loading a conventional disk cartridge, where (a) shows a state during tray loading and (b) shows a tray loading completion state. FIG. 3 is a perspective view showing an appearance of a sealed disk cartridge. It is a disassembled perspective view which shows the structure of a sealed disk cartridge. It is a perspective view showing the appearance of an open disk cartridge. It is a disassembled perspective view which shows the structure of an open type disk cartridge.

Explanation of symbols

10 disc 20 traverse base 30 spindle motor 40 optical pickup 50 base chassis 60 clamp mechanism 61 clamper 62 clamper holder 63 clamp arm 64 upper base 65 biasing spring 66 opener cam 70 tray 75 opener 80 shutter open / close mechanism 100 conventional disc cartridge 200 sealed Type disc cartridge 240 clamper 300 open type disc cartridge 510 frame 520 upper case 530 lower case

Claims (25)

A disc having a signal recording surface;
A disk motor having a turntable for mounting the disk;
A tray that moves between a first position where the disk is mounted and the disk is loaded or unloaded, and a second position where the disk motor can rotate the disk;
A head for recording and / or reproducing a signal on the disk;
A clamper for clamping the disk with the turntable;
A disc device comprising a clamp mechanism for moving the clamper up and down between a retracted position away from the turntable and a clamp position for clamping the disc on the turntable;
The clamp mechanism rotates with the clamper holder having a clamper support surface for rotatably supporting the clamper and the movement of the tray, and moves the clamper holder in a direction perpendicular to the signal recording surface. A clamping arm, an upper base that supports the clamper holder and the clamping arm, a holder biasing spring that biases the clamper holder in a direction in which the clamper is lowered, and a direction in which the clamper is raised in the clamp arm. An arm biasing spring for biasing,
The clamp mechanism rotates the clamp arm when the tray moves between the first position and the second position, and moves the clamper support surface of the clamper holder to the signal of the disk. A disc apparatus characterized in that the clamper holder is moved up and down while maintaining a state substantially parallel to a recording surface.   The disk device according to claim 1, wherein the position of the clamper holder in a state where the clamper is raised to the retracted position is positioned by the upper base.   3. The disk device according to claim 1, wherein the lower base is positioned by the upper base when the clamper is lowered to the clamp position.   In a state where the clamper is moved up to the retracted position, a part of the clamper holder is biased to the upper base by a biasing force of the arm biasing spring to stop the clamper holder from being lifted, and the clamper 4. The disk device according to claim 1, wherein the holder is positioned in the height direction.   In a state where the clamper is lowered to the clamp position, the lowering of the clamper holder is stopped by biasing a part of the clamper holder to the upper base by the biasing force of the holder biasing spring. 5. The disk device according to claim 1, wherein the holder is positioned in the height direction.   6. The disk device according to claim 5, wherein the clamp arm is separated from the clamper holder in a state where the clamper is lowered to the clamp position.   In a state where the clamper holder is raised to the retracted position, the clamper holder is positioned by engaging a positioning contact portion provided on the clamper holder with a position restricting portion provided on the upper base. The disk device according to claim 1.   The clamper holder is positioned by inserting a positioning pin provided in the upper base into a positioning hole provided in the clamper holder in a state where the clamper holder is lowered to the clamp position. 8. The disk device according to any one of 7 above.   In the state where the clamper is lowered to the clamp position, the clamper holder is orthogonal to the direction in which the tray moves, and at least one or more in each region having a plane including the rotation center axis of the clamper as a boundary. 9. The disk device according to claim 1, wherein the disk device is in contact with and supported by the upper base.   The disk device according to claim 1, wherein the holder biasing spring is a wire spring.   The said clamper holder receives the urging | biasing force of the said holder urging | biasing spring, and has a 1st engaging part and a 2nd engaging part which engage with the said holder urging | biasing spring. Disk unit.   12. The disk device according to claim 11, wherein the first and second engaging portions are arranged symmetrically with respect to a plane that is parallel to a direction in which the tray moves and includes a rotation center axis of the clamper. .   The disk device according to claim 11, wherein the first and second engaging portions are provided in a vicinity of a plane that is orthogonal to a moving direction of the tray and includes a rotation center axis of the clamper.   The disk device according to any one of claims 1 to 13, wherein the tray is capable of mounting a disk cartridge containing the disk.   The disk device according to claim 14, wherein the disk cartridge has an internal clamper for clamping the disk between the disk cartridge and the turntable.   When the disc cartridge having the internal clamper is loaded and the tray is moved to the second position, the clamper is not lowered to the clamp position, and the disc is clamped to the turntable by the internal clamper. The disk device according to claim 15.   The disk device according to claim 16, wherein the clamper does not descend by contacting the upper surface of the disk cartridge.   18. The disk device according to claim 17, wherein when the disk cartridge having the internal clamper is loaded, the clamper holder abuts on the clamper and stops on the upper surface of the disk cartridge.   A conical taper surface is provided on the outer peripheral surface of the clamper, and the tray placed on the tray when the tray moves between the first position and the second position. The disk device according to any one of claims 14 to 18, wherein the clamper passes through the upper surface of the disk cartridge while contacting the disk cartridge and the tapered surface.   The tray includes a cam portion that contacts the clamp arm and rotates the clamp arm when the tray moves between the first position and the second position. The disk device according to any one of the above.   The tray is provided with an opener for opening and closing the shutter of the disk cartridge, and contacts the clamp arm when the tray moves between the first position and the second position, The disk device according to claim 14, wherein a cam portion for rotating the clamp arm is formed in the opener.   The disk device according to claim 1, wherein the arm biasing spring is configured by a part of the clamp arm.   23. The disk device according to claim 1, wherein the clamp arm is rotatably held by the upper base by attaching the holder biasing spring to the upper base.   24. The disk apparatus according to claim 1, wherein the clamper holder is biased by the holder biasing spring to the upper base via an elastic member in a state where the clamper is lowered to the clamp position. . 25. The disk device according to claim 24, wherein the elastic member is a vibration damping member that reduces vibration.

Images