JP2006185574A - Disk carrying mechanism - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To carry a disk into and out from a disk driving part without making a flaw having an adverse affect to the reproduction of recorded information on the disk. <P>SOLUTION: This disk carrying mechanism 10 carries the disk in and out from a drive unit 4 (disk driving part) comprising a turntable 8 rotating the disk D. The disk carrying mechanism 10 is provided with a slider 11 reciprocating straight in a carry-in direction L1 and a carry-out direction L2 of the disk within the drive unit 4. The slider 11 comprises an sandwich-holding means 22 for sandwiching and holding the outer periphery part of the carry-in side of the disk D. Then, the disk D with its outer periphery part on the carry-in side held by the sandwich-holding means 22 is moved in the carry-in direction L1 and the carry-out direction L2 accompanying the slider 11, so that the disk D is carried in and out. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a disk transport mechanism used in a disk drive device such as a CD player or a DVD recorder, and more particularly to a novel disk transport mechanism that can transport a disk without damaging it.

  2. Description of the Related Art Conventionally, a disk drive device that records music information on a disk such as a CD or a DVD and reproduces the recorded information is generally well known. Such a disk drive device has a disk drive unit equipped with a turntable for rotating the disk and a pickup moving in the radial direction of the disk, and the turntable chucks the center of the disk between the clamp plate and the disk drive unit. The recording information on the disc can be read and the information can be written by a pickup that moves in the radial direction while rotating the disc.

  In particular, as such a disk drive device, a disk transport mechanism for loading and unloading a disk between a slit-like opening (slot) and a turntable constituting the disk drive unit is used without using a tray on which the disk is placed. Things are known.

  Such a disk drive device is called a slot-in type, and as such a disk transport mechanism, there is a mechanism that transports while sandwiching the disk with a pair of feed rollers, or a mechanism that transports the disk with a plate-shaped member and a feed roller. It is common.

  The former transport mechanism is configured such that when the center of the disk reaches a position facing the turntable, the pair of feed rollers are opened and the center of the disk is chucked by the turntable and the clamp board. Since the disc is conveyed through a pair of feed rollers, there is a drawback that if a foreign object enters between the disc and the feed roller, the disc surface of the disc (especially the signal recording area) may be scratched to cause reproduction failure. is there.

  On the other hand, the latter transport mechanism is configured to transport the disk while sliding the disk on the plate-like member by the rotation of the feed roller. This is also because the feed roller is pressed against the entire surface of the disk being transported. There is a drawback in that the signal recording area of the disk is easily scratched which causes reproduction failure.

  In the latter transport mechanism, when the center of the disk reaches the position facing the turntable, the clamp disk is used to move the feed roller away from the plate member and move the disk away from the plate member. Because the center of the disc is pressed to the turntable side by the vertical disc drive device in which the axis of the turntable is horizontal, before the disc is chucked by the turntable and the clamp plate If the feed roller moves in a direction away from the plate-like member, the disk may move downward due to the action of gravity and may not be chucked.

  Therefore, the plate-shaped member (elastic support member) is fed so that the disk is properly chucked even in a vertical disk drive device by using a disk transport mechanism that transports the disk between the feed roller and the plate-shaped member. When the disk is transported between the elastic support member and the feed roller while being urged by a spring toward the roller side, both of them are moved to the turntable side and the chucking of the disk is completed. One in which the roller is separated from the disk is known (for example, Patent Document 1).

  In addition, a mechanism has been proposed in which a pair of sliders are provided in parallel to the disk transport direction, and the disk is sandwiched and transported from both the right and left sides perpendicular to the transport direction by the sliders (for example, Patent Documents). 2).

JP 2002-140850 A (Embodiment of the Invention)

JP-A-11-185337 (Claims)

  However, Patent Document 1 also differs from the conventional one in that the disc is transported by being sandwiched between the plate-like member and the feed roller, and the disc is brought into contact with the other surface by the feed roller that is in rolling contact with the one surface. Since the sheet is conveyed while being slidably contacted, the surface slidably contacting the plate member is scratched. Since the surface is opposite to the surface irradiated with the laser beam by the pickup, there is little adverse effect on the reading of the pits by the pickup, but it slides on the plate member while the disk is repeatedly transported. The scratches on the surface may extend deep inside the disk, which may hinder reading of the pits by the pickup.

  Also, on the surface side where the feed roller comes into contact, the feed roller rotates in a state of being tightly adhered by the spring force, so that the surface on the feed roller side cannot be scratched, and a hard foreign object is placed between the feed roller and the disk. When it enters, it is almost impossible to reproduce the information recorded on the disc.

  In this respect, in Patent Document 2, since the disc is sandwiched and conveyed by the pair of left and right sliders, the signal recording area of the disc can be prevented from being damaged.

  However, in Patent Document 2, since the pair of sliders are arranged on both the left and right sides in parallel with the transport direction (loading direction) of the disk, it is difficult to reduce the size (width) of the apparatus. In particular, when a disk is sandwiched by a pair of sliders from both the left and right sides, it cannot be used in combination with two types of disks having different diameters. That is, if the distance between the sliders is narrowed corresponding to a disk having a diameter of 8 cm, the disk having a diameter of 12 cm cannot be pushed between the pair of sliders. Conversely, if the distance between the sliders is widened corresponding to the disk having a diameter of 12 cm, The disc cannot be clamped.

  In addition, when the disk is set on the turntable, a special mechanism is required to move the pair of sliders in the direction in which the distance between the sliders is widened (in the direction perpendicular to the disk transport direction) in order to release the disk. There is a drawback that it becomes complicated and that it is difficult to reduce the size of the apparatus because a region for moving the slider in two orthogonal directions must be secured in the apparatus.

  The present invention has been made in view of the circumstances as described above, and the object thereof is to carry in and out of the disk with respect to the disk drive unit without damaging the disk so as to adversely affect the reproduction of recorded information. Another object of the present invention is to provide a disk transport mechanism having a simple structure that can be incorporated into a small-sized apparatus.

  In order to achieve the above object, the present invention is a disk transport mechanism 10 for loading and unloading a disk to and from a drive unit 4 (disk drive unit) including a turntable 8 for rotating the disk, and the disk loading direction L1 and unloading. The slider 11 that moves back and forth in the direction L2 is provided, and the slider 11 is provided with clamping means 22 that clamps the outer peripheral edge of the disk loading side from the thickness direction. The sandwiched disk is accompanied by the slider 11 and moves in the loading direction L1 and the unloading direction L2.

  Further, in the disk transport mechanism as described above, the clamping means 22 includes ribs 15A and 15B (front surface side pressing part) and pressure roller 16 (back surface side pressing part) that are in pressure contact with the outer peripheral edge part on the carry-in side on both the front and back sides of the disk. Both of them form an acute depression angle θ that sandwiches the outer peripheral edge of the disk from the thickness direction.

  In the present invention, the disk means an optical disk (including a magneto-optical disk) that is a disk-shaped information recording medium such as a CD or DVD, and is not covered by a cartridge case.

  According to the disk transport mechanism of the present invention, since the disk is transported by pinching the outer peripheral edge of the disk with the clamping means, it is possible to prevent the disk surface on which the pit rows are formed from being damaged during transport.

  For this reason, there is no deterioration of the recorded information, and it is possible to realize good reproduction of the recorded information over a long period while maintaining the quality of the disc in the initial state.

  In particular, the slider that moves back and forth in the disk loading and unloading directions is provided with clamping means for clamping the outer peripheral edge of the disk loading side from the thickness direction. In comparison, since the diameter of the disk does not greatly affect the clamping of the disk, both the 8 cm disk and the 12 cm disk can be transported while sandwiching the outer peripheral edge on the loading side.

  Further, in the case where the outer peripheral edge portion on the disk loading side is clamped by the clamping means provided on the slider, the disk can be loaded and unloaded (carrying) only by moving the slider in the disk loading / unloading direction (uniaxial direction). The holding means can be separated from the disk guided on the turntable by moving the slider in the loading direction, and the outer peripheral edge of the disk on the turntable by moving the slider in the unloading direction when the disk is unloaded Can be clamped by the clamping means.

  In addition, the clamping means is composed of a front side pressing part and a back side pressing part, both of which form an acute depression angle that sandwiches the outer peripheral edge of the disk from the thickness direction. Only the peripheral edge can be firmly held.

  Hereinafter, the present invention will be described in detail with reference to the drawings. FIG. 1 is a perspective external view schematically showing an example of a slot-in type disk drive device. In FIG. 1, reference numeral 1 denotes a housing that forms the exterior of the apparatus, and the front surface thereof is an operation surface 2 on which operation switches (not shown) are arranged. The operation surface 2 has a disk (in this example, a disk having a diameter of 12 cm). Is applied to a disk having a diameter of 8 cm, and a slit-like opening 3 (slot) is formed. The opening 3 can be freely opened and closed by a flap plate (not shown) that prevents intrusion of dust. In FIG. 1, the hatched portions indicated by reference numerals f1 and f2 and the central transparent portion indicated by reference numeral f3 represent the main light emitting portion of the disc. The configuration will be described later.

  Next, FIG. 2 shows a drive unit (disk drive unit) provided in the housing. In this example, the drive unit 4 is not lifted or lowered by a lifting mechanism, but is a fixed type that is fixed to the casing 1, and this is a large number of electronic components or the like mounted on a chassis 5 formed of metal or the like. The clamp board 6 can be moved up and down. The chassis 5 includes a base plate 5A and a top plate 5B that covers the top of the base plate, and the top plate 5B is attached with a rectangular frame-shaped slide plate 7 described later in addition to the clamp plate 6 described above. The front end 5C of the chassis 5 is opened corresponding to the opening 3 shown in FIG. 1 so that the disk D can be drawn into the chassis 5.

  As shown in FIG. 3, a turntable 8 for rotating the disk D and a pickup 9 for detecting a pit row of the disk are provided inside the chassis 5. Then, the disk D is rotated by the turntable 8 and the clamp disk 6 shown in FIG. 2 with the central portion being chucked, and the pickup 9 is on the inner peripheral side along the disk surface of the rotating disk D. It moves in the radial direction from the outer periphery side to the outer periphery side (position indicated by the symbol E). In FIG. 3, the pickups 9 at both moving ends are indicated by solid lines.

  Further, the drive unit 4 includes a disk transport mechanism 10 that loads and unloads the disk D between the turntable 8 and the opening 3 shown in FIG. In this example, the disk transport mechanism 10 loads (loads) the disk D artificially inserted from the outside into the drive unit 4 into the opening 3 shown in FIG. Is unloaded from the opening 3 to the outside of the drive unit 4 and the housing 1, and this is a disk transport direction (loading direction L 1 and unloading) facing the opening 3 shown in FIG. A slider 11 that reciprocates linearly in the direction L2) is provided, and the disk D is carried in and out of the drive unit 4 when the disk D accompanies the slider 11.

  The chassis 5 is provided with a transport drive unit 12 for moving the slider 11 in the disk transport directions L1 and L2 and a pair of left and right guide rails 13 for guiding the movement of the slider 11. Then, the driving force of the conveyance drive unit 12 is transmitted to the slider 11 through the feed screw 14, and thereby the slider 11 reciprocates linearly in the disk conveyance directions L 1 and L 2 along the guide rail 13. Incidentally, the slider 11 is moved and guided by the feed screw 14 at one end and the one guide rail 13 at the other end side in the loading direction L1 side from the turntable 8, and the left and right sides of the disk D are guided by the guide rail 13 when transported by the slider 11. Are supported horizontally (not supported by a small-diameter disk having a diameter of 8 cm).

  Here, FIG. 3 shows a state in which the slider 11 has moved to the end position in the disk unloading direction L2. At this time, the disk D is exposed to the other end side with the front side in the unloading direction exposed to the outside from the opening 3. (The rear side in the unloading direction) is supported by the slider 11 so that it can be pulled out, and after the disk D is pulled out, another disk can be inserted into the opening 3 of the housing and can be carried into the drive unit 4 by the slider 11. Is done.

  FIG. 4 shows a state in which the slider 11 has moved to the end position in the disk loading direction L1. At this time, the center of the disk D is at a position corresponding to the turntable 8, and the center is moved by the turntable 8. It has come to be supported.

  Next, FIG. 5 is a perspective view showing the bottom side of the slider. As is apparent from this figure, on the bottom surface of the slider 11, two pairs of ribs 15A, 15A and ribs each having a pair of two tops (upward surfaces in FIG. 5) forming a V-shaped inclined surface. 15B and 15B are formed, and between the two sets of ribs 15A and 15A and the ribs 15B and 15B, a tapered pressure contact roller 16 formed of rubber or the like is provided. As shown in FIGS. 5 and 6, the pressure roller 16 is fixed to a rotating shaft 17, and the rotating shaft 17 is supported by a grip arm 19 having a support shaft 18 as a rotation fulcrum portion. Further, the grip arm 19 is formed with a clamping guide portion 20 described later in the vicinity of the pressure roller 16. The grip arm 19 having the pressure roller 16 and the clamping guide portion 20 has a spring 21 (torsion coil spring) provided on the outer periphery of the support shaft 18 so that the support side of the pressure roller 16 and the formation side of the clamping guide portion 20 are It is biased toward the ribs 15A and 15B.

  Here, the ribs 15A, 15B and the pressure roller 16 are provided with two clamping means 22, 22 for clamping the two outer peripheral edge portions of the disk from the thickness direction on the disk loading side (back side in the unloading direction). Constitute. That is, as shown in FIGS. 6 to 8, the two clamping means 22, 22 include a front side pressing portion (ribs 15 </ b> A, 15 </ b> B) and a back side pressing that are in pressure contact with the outer peripheral edge portion on the carry-in side on both front and back sides of the disc. The disc clamping force due to this is kept constant by the elasticity of the spring 21.

  In FIG. 8, the ribs 15A (and 15B) constituting the clamping means and the pressure roller 16 form an acute depression angle θ that sandwiches the outer peripheral edge of the disk from the thickness direction. The depression angle θ is 10 Thus, the ribs 15A and 15B and the pressure roller 16 can contact only the outer peripheral edge of the disk D without contacting the signal recording area of the disk D. .

  Here, the outer peripheral edge is a corner on the outer periphery of the disk, or a corner and its vicinity. As a specific example, if the ribs 15A and 15B are formed of a resin material, the ribs 15A and 15B are relatively hard, so that the ribs are in line contact with the corner edges of the disk, and the pressure roller 16 is made of rubber or the like. If formed of a material having flexibility, surface contact including the ridgeline at the corner of the disk and the surfaces in the vicinity thereof (surface and end surface) is obtained. Further, when the pressure roller 16 is formed of a high hardness material, both are in line contact at the corners of the disk. In any case, as described above, it does not contact the signal recording surface of the disc.

  On the other hand, if the pressure roller 16 is in contact with the disk between the two ribs 15A and 15B as described above, the disk does not face each other and the disk is supported at two points on the rib side and one point on the roller side. Thus, stable support is possible. In particular, it is preferable that the pressure roller 16 is positioned at the center between the two ribs 15A and 15B in order to balance the force.

  FIG. 9 is a diagram for helping understanding of the above-described clamping means. This figure shows an example in which one of the ribs and the pressure contact roller are positioned facing each other for convenience. From this figure, it is understood that the rib 15A (15B) and the pressure roller 16 are in contact with the outer peripheral edge (the corner or the corner and its vicinity) of the disk D by providing the depression angle θ.

  On the other hand, the sandwiching guide unit 20 is for assisting the support of the disc by the sandwiching means 22 when the disc is unloaded, and the sandwiching guide unit 20 includes the sandwiching guide unit 20 when the disc supported by the turntable is unloaded. An inclined surface 20A is formed for pushing up the rear side (carrying side) of the disc in the carry-out direction and guiding the outer peripheral edge between the ribs 15A and 15B and the pressure roller 16 (see FIG. 10).

  As shown in FIGS. 5, 6, and 11, the bottom surface of the slider 11 is formed with a position adjusting surface 23 that spreads in a V-shape toward the disk unloading direction. Positioning can be performed. In other words, the outer peripheral edge of the disk (in FIG. 11, D is a large-diameter disk having a diameter of 12 cm, and d is a small-diameter disk having a diameter of 8 cm) is pinched at two locations by the clamping means 22 to support the disk in a generally cantilevered state. In this case, the end surface of the disk D (including the disk d) is brought into contact with the position adjusting surface 23 so that the turntable and the center of the disk are aligned in the disk transport directions L1 and L2. The angle λ of the position adjusting surface 23 is preferably 90 degrees, but the angle λ can be changed as necessary.

  In FIG. 11, the left and right position adjustment surfaces 23 have a linear shape common to the large-diameter disk D and the small-diameter disk d. D and the small diameter disk d may be positioned on different surfaces.

  Thus, according to the slider 11 as described above, a pair of clamping means 22 as shown in FIG. The disc can be carried in and out along the carrying directions L1 and L2.

  Incidentally, the disk D during transport is also supported on both side edges in the direction perpendicular to the transport directions L1 and L2 by side guides to be described later (not supported by a small-diameter disk as described above). Immediately before the section is guided on the turntable, the support by the side guide is lost. For this reason, the disc can be moved (lowered) toward the turntable.

  That is, when the disk is loaded, the slider 11 and the disk D move together in the loading direction L1 as shown in FIG. 13, but when the center hole h of the disk reaches the turntable 8, as shown in FIG. As shown in FIG. 14, the clamp plate 6 descends and pushes the center of the disk D. At this time, the outer peripheral edge of the disk D is still clamped by the clamping means 22 but the disk D is no longer supported by the side guides, so that the disk D resists the elasticity of the spring 21 shown in FIG. 14 is inclined as shown in FIG. 14, and the center hole h is fitted into the turntable 8. On the other hand, the slider 11 further moves in the loading direction L1. At this stage, the center hole h of the disk D (including the small-diameter disk) is caught by the turntable 8, and as a result, from the holding means 22 of the slider 11 The outer peripheral edge of the disk D comes off, and instead of the clamping means 22, the disk D is supported at the center by the turntable 8. The center part is chucked (clamped).

  In FIG. 15, reference numeral 24 denotes the above-mentioned side guide, and this side guide 24 is formed opposite to the inner wall surface of the guide rail 13, and thereby the disk D in a direction orthogonal to the disk transport directions L1 and L2. Both side edges are slidably supported.

  In particular, as shown in FIGS. 15 and 16, the tip of the guide rail 13 extending in the disc loading direction L <b> 1 than the side guide 24 is in the disc loading direction L <b> 1 when the center of the disc reaches the turntable 8. Thus, the disk 25 is stopped at a predetermined position without the center hole h of the disk being caught by the edge of the turntable 8 so that the turntable 8 and the clamp board 6 are stopped. The chucking operation is performed properly.

  On the other hand, when the disk is unloaded, the slider 11 starts moving in the unloading direction L2 while the clamp plate 6 is raised, and the disk is supported in a cantilever state by the clamping means 22 provided on the slider (FIG. 17, see FIG.

  Specifically, in a state where the disk D is supported by the turntable 8 as shown in FIG. 19A, the clamping means 22 is located above the disk D and is separated from the disk (in FIG. 19A, the disk D is clamped with the disk D). The guide portions 20 overlap each other, but both of them are separated in the direction perpendicular to the drawing). When the slider 11 starts to move in the unloading direction L2 in this state, the clamp plate 6 is raised in conjunction with this, while the holding guide portion 20 facing the end surface of the disk is moved by the inclined surface 20A as shown in FIG. As shown in b), the rear side (carrying side) of the disc D in the carry-out direction is pushed up, and the outer peripheral edge of the disc is guided between the ribs 15A and 15B (front side pressing portion) and the pressure roller 16 (back side pressing portion). To come. In particular, when the rear side of the disc ejection direction is pushed up by the clamping guide portion 20, the front side of the disc D in the ejection direction is lowered from the support position by the turntable 8, as shown in FIG. The front end face is in contact with a stopper 27 provided on a disk supporter 26, which will be described later, and the disk is restricted from moving in the carry-out direction L2, while the grip that forms the clamping guide 20 along the inclined disk D As shown by an imaginary line in FIG. 20, the arm 19 swings downward against the elasticity of the spring 21, so that the gap between the ribs 15A and 15B and the pressure roller 16 is widened so as to receive the outer peripheral edge of the disk.

  When the slider 11 further moves in the unloading direction L2, as shown in FIG. 19C, a stopper 27 provided between the opening 3 and the turntable 8 rises and pushes up the front side of the disk in the unloading direction. Thus, since the load acting on the grip arm 19 is reduced, the grip arm 19 swings upward by the elasticity of the spring 21 as shown by the solid line in FIG. As a result, as shown in FIG. 19C, the outer peripheral edge of the disk D is firmly held by the holding means 22 on the rear side (loading side) in the carry-out direction and is supported horizontally. Thereafter, the disk D is also supported by the side guides 24 on both side edges, and in this state, the disk D is carried out toward the opening 3 while being pushed by the slider 11 in the carrying-out direction rear side. When the disk D is transported, the disk supporter 26 provided with the stopper 27 does not interfere with the disk D.

  Here, the disk supporter 26 will be described. This is configured by providing the stopper 27 on an elongated plate 28 as shown in FIG. The stoppers 27 are cylindrical projections (bosses) formed on the plate 28, and two of them are provided at a constant interval (interval smaller than the diameter of the disc D) in the direction orthogonal to the disc transport directions L 1 and L 2. It is supposed to be configured.

  Reference numeral 29 denotes a shaft portion formed at both ends of the plate 28. The shaft portion 29 is rotatably supported by a bracket (not shown) formed on the base plate 5A. A roller-shaped cam follower 30 is provided at one end of the plate 28.

  The disc supporter 26 is urged toward the surface of the base plate 5A by an elastic member (not shown) so that the stopper 27 keeps the stopper 27 standing, and the cam follower 30 is pressurized. When this occurs, the disk supporter 26 rotates around the shaft portion 29 against the elastic force of the elastic member so that the stopper 27 is inclined toward the opening 3 side.

  21 and 22, reference numeral 31 denotes a lever for operating the disk supporter. The lever 31 is provided on the base plate 5A so as to be slidable in the disk transport directions L1 and L2. The lever 31 is urged toward the opening 3 by a spring 32, and a cam 33 for pressurizing the cam follower 30 is formed at one end in the urging direction, and at the other end at a right angle. A bent pressure receiving portion 34 is formed.

  When the slider 11 reaches the end position in the loading direction L1, the pressure receiving portion 34 of the lever 31 is pressed by the slider 11, whereby the cam 33 pressurizes the cam follower 30 and operates the disc supporter 26 as described above. It is supposed to let you.

  In short, when the slider 11 reaches the end position in the carry-in direction L1 and delivers the disk to the turntable 8, the disk supporter 26 falls down and is completely separated from the disk so as not to impede the rotational drive of the disk.

  On the other hand, when the slider 11 starts to move in the unloading direction L2 to unload the disk on the turntable 8, the cam follower 30 is still pressed by the cam 33, so that the disk supporter 26 falls as shown in FIG. The stopper 27 restricts the movement of the disk D in the carry-out direction until the outer peripheral edge on the disk carry-in side is properly picked up by the clamping means 22, but the slider 11 continues to move in the carry-out direction L2. The disk supporter 26 gradually rises from the state indicated by the imaginary line in FIG. 24 according to the contour of the cam 33 to the state indicated by the solid line, and the stopper 27 functions to push up the disk D in the process.

  Here, the disk pushed up by the stopper 27 is temporarily supported on the front side in the unloading direction by the upper surface portion 26A of the disk supporter, but the upper surface portion 26A is V-shaped as shown in FIG. Therefore, the signal recording area of the disk does not contact the upper surface portion 26A of the disk supporter, and only the outer peripheral edge portion (hatched portion shown in FIG. 26) of the upper surface portion 26A is on the front side in the disk unloading direction. Contact.

  When the slider 11 further moves in the unloading direction L2, the disk is separated from the upper surface portion 26A of the disk supporter on the front side in the unloading direction by the holding force of the disk on the rear side (loading side) in the unloading direction by the holding means 22. Instead, both side edges of the disk are supported by the side guide 24.

  As shown in FIG. 22, the lever 31 is formed with a projecting piece 35 that hangs downward from the base plate 5A. The projecting piece 35 pushes the switch SW1 simultaneously with the pressure of the pressure receiving portion 34 by the slider 11, thereby causing the slider 31 to slide. The transport driving unit for moving the head 11 in the transport directions L1 and L2 is stopped.

  In FIG. 21, reference numeral 36 denotes a disk supporter corresponding to a small-diameter disk d, which also includes a stopper 37 made of a cylindrical protrusion, a plate 38 having the stopper, a shaft part 39 forming the rotation fulcrum, and a cam follower. The lever 31 is formed with a cam 41 corresponding to the cam follower 40. Since the operation is the same as that of the disk supporter 26, description thereof is omitted.

  Next, the structure in which the disc emits light will be described. As shown in FIG. 5, the slider 11 is provided with a pair of left and right light sources 50. In this example, the light source 50 is a light emitting diode (LED), which is also a multi-color LED (chip type) that can generate various light colors by combining red, green, and blue light. And a green two-color LDE or a single-color LED.

  In particular, the light source 50 is configured such that the outer peripheral edge faces the end face f0 on the carry-in side of the disk D (including a small-diameter disk) sandwiched by the sandwiching means 22 as shown in FIGS. Therefore, when the disk D is loaded and unloaded, the light source 50 also faces the end surface f0 on the disk D loading side and moves linearly in the same direction along with the disk D.

  Accordingly, the light emitted from the light source 50 enters the inside of the disk D from the end face f0 of the disk D as shown in FIG. 29 (in the direction of the arrow in FIG. 28), and between the inner and outer peripheral edges of the disk D. The light is guided to the end surface f1 on the disk unloading side by repeating the reflection. For this reason, the transparent portion of the disk not covered with the light-shielding protective film, particularly the outer peripheral end face f1, the central inner peripheral face f2, and the peripheral area f3 of the central hole (see also FIG. 1) are also moved. Regardless, it emits light with high brightness, and when it is unloaded, the visibility is improved by the light emission of the disk D exposed from the opening 3, the position becomes clear even in a dark place, and an excellent illumination effect is also exhibited.

  Incidentally, the light source 50 composed of multi-color LEDs is used to perform light color conversion control, whereby the light emission color of the disk can be periodically changed to further improve the illumination effect. Further, it is preferable that two light sources 50 be arranged adjacent to each other at a distance much larger than the diameter of the center hole h of the disc, and thereby the light emitted from the light source 50 is carried into the disc as shown by the arrow in FIG. The light can be favorably guided from the side to the carry-out side, but the number of such light sources 50 may be one or two or more, and a fluorescent tube or the like may be used instead of a point light source such as an LED. .

  Next, FIG. 30 and FIG. 31 show a transport drive unit for moving the slider 11 in the disk loading direction and the unloading direction. As is apparent from these drawings, the conveyance drive unit 12 includes a drive source 51 composed of an electric motor, a pulley 52 fixed to the rotor shaft, a driven pulley 54 to which the power of the pulley 52 is transmitted via a belt 53, A worm 55 fixed coaxially with the driven pulley 54 and a worm wheel 56 meshing with the worm 55 are included, and the worm wheel 56 is fixed to one end of the feed screw 14. The worm 55 may be directly connected to the rotor shaft of the drive source 51.

  Here, a carrier 60 that engages with the feed screw 14 is provided at one end of the slider 11. As apparent from FIGS. 32 and 33, the carrier 60 can move in the axial direction of the feed screw 14 with respect to the carrier body 61 having bracket portions 61 </ b> A and 61 </ b> B that allow the feed screw 14 to pass therethrough. And a linear runner plate 63 is provided on the linear guide 62. The runner plate 63 is formed with a protrusion 64 that fits into the spiral groove 14A formed on the outer periphery of the feed screw, and the protrusion 64 is not easily detached from the spiral groove 14A by the action of the leaf spring 65. . A compression coil spring 66 is provided on the outer periphery of the feed screw 14 between one bracket portion 61 </ b> A of the carrier body and the linear guide 62.

  Thus, when a disc is inserted into the opening 3 of the housing shown in FIG. 1, the two outer peripheral edge portions are held by the slider holding means 22 shown in FIG. Due to the pushing force of the disk, the slider 11 moves to the back side of the housing against the elasticity of the compression coil spring 66 while the linear guide 62 is in a stationary state, whereby a switch (not shown) is operated to rotate the feed screw 14. The drive is started, and the slider 11 is moved in the loading direction with the disk while holding the outer peripheral edge of the disk by the rotational drive.

  On the other hand, two trigger levers 71 and 72 as shown in FIG. 34 are attached to the top plate 5B of the chassis shown in FIG. 2 so as to be slidable in the disk transport directions L1 and L2. In addition, on the back surface of the rectangular frame-shaped slide plate 7 (see FIG. 2) attached to the top plate 5B, two pairs of protrusions 73A and 73B are formed on the left and right sides in parallel with the disk transport directions L1 and L2. One set is provided. Further, as apparent from FIG. 34, a pair of left and right swing links 74 are attached to the upper surface of the slider 11.

  Reference numeral 75 denotes a rotation center of the swing link 74, and a first pin 76 (see FIG. 5) projecting from the inside of the slider 11 protrudes from one end of the swing link 74 separated from the rotation center 75. A second pin 77 for projecting the trigger lever 71 and the slide plate 7 protrudes from one end on the opposite side.

  When the disc is inserted into the opening 3 of the housing shown in FIG. 1, the outer peripheral edge of the carry-in side is picked and supported by the holding means 22 of the slider as described above, and at the end surface of the disc. When the first pin 76 is pressed, the swing link 74 rotates in the arrow direction in FIG. 34 against a spring force (not shown). As a result, the slider 11 moves in the disk loading direction L1 with the second pin 77 inserted between the protrusions 73A and 73B (when a large-diameter disk is inserted) (see FIG. 35), and eventually the second pin 77 collides with the end face of the hole 71A formed in the trigger lever 71.

  As a result, the trigger lever 71 moves in the disk loading direction L1 together with the slider 11 against the elasticity of the spring 78 shown in FIG. 34 (see FIG. 36), and the part 71B of the trigger lever 71 eventually becomes the part of the trigger lever 72. It becomes a collision. Therefore, when the trigger lever 72 also moves in the same direction as the trigger lever 71 and the center of the disk reaches a position corresponding to the turntable, the portion of the clamp arm 6A is pressed by the portion 72A of the trigger lever 72 (FIG. 37), the clamp plate 6 attached to one end of the clamp arm 6A is pushed down toward the turntable against a spring force (not shown), and the central portion of the disk is chucked by the clamp plate 6 and the turntable. Will be.

  Note that if the disk is pulled out by the user while the slider 11 is moving in the disk loading direction L1, the first pin 76 is not pressed by the disk, so the swing link 74 has a spring (not shown). 34 starts to rotate in the direction opposite to the arrow in FIG. 34, whereby the second pin 77 enters the notch 79 formed in the protrusion 73A at a predetermined interval, and the slide plate 7 having the protrusion 73A is inserted into the disc. The slide drive 7 pushes the switch SW2 provided on the top plate 5B to reverse the transport drive unit 12 of the disk transport mechanism. As a result, the movement of only the slider 11 in the disc loading direction L1 while the disc is left behind is prevented.

  Here, the above operation is mainly performed for a disk having a diameter of 12 cm. In the case of a disk having a diameter of 8 cm, the second pin 77 is guided inside the protrusion 73B. In this case, since the timing of the start of the operation of the trigger lever 71 is accelerated by the shape of the hole 71A, the disk having a diameter of 8 cm is also moved by the slider 11 to a position facing the turntable and properly chucked. However, the detailed description thereof is omitted.

  However, the trigger levers 71 and 72 shown in FIG. 34 may be integrated into a single trigger lever 81 as shown in FIG. In FIG. 38, the trigger lever 81 is urged by a spring (not shown) in the disc unloading direction L2, and a cam lever (not shown) is provided on the passage path of the second pin 77. By applying pressure with the pin 77, the trigger lever 81 is actuated at a predetermined timing, whereby the lifting and lowering operation of the clamp panel 6 is performed.

  In the example shown in FIG. 38, even if the disk is not pulled out in the middle of loading, when the slider 11 reaches the end position in the loading direction, the tips of the protrusions 73A and 73B are pressurized by the second pin 77, thereby sliding The switch SW2 is pressed through the plate 7. At this time, the switch SW1 shown in FIG. 22 is pressed by the slider 11, so that the transport driving unit stops without being reversed.

  Here, the sandwiching means of this embodiment does not slidably contact the disk, so that the disk is not damaged, but the outer peripheral edge of the disk on which no signal is recorded is sandwiched by the sandwiching means. For example, even if dust or the like is sandwiched, there is no adverse effect on the signal recording surface. In the above example, a pair of holding means has been described. However, the holding means may be a single holding means for picking the outermost peripheral edge of the disk in the loading direction. Three clamping means combined with the clamping means may be provided.

  Although the present invention has been described above, the disk transport mechanism according to the present invention can be suitably used in various disk drive devices such as a CD player, a DVD recorder, or a car navigation DVD player. The disk transport mechanism is not limited to the slot-in type disk drive device, but can be applied to an auto-changer type in which the disk is transported between the disk storage unit inside the housing and the drive unit. However, in the autochanger type, the light emission of the disc cannot be visually recognized from the outside. In this case, the light source 50 may be omitted.

  In the above example, the disk drive unit is fixed, but the turntable and pickup mounting portion may be liftable. Even in this case, the turntable and clamp board are moved in the closing direction when the disk is loaded. In addition to disc chucking, the holding means can be separated from the disc by moving the slider in the loading direction, and when the disc is unloaded, the slide in the loading direction remains in the chucked state. By moving, the outer peripheral edge of the disk is clamped by the clamping means, and the disk can be unloaded by moving the turntable and the clamp board in the opening direction in anticipation of the completion of the clamping of the disk.

1 is a perspective external view of a disk drive device provided with a disk transport mechanism according to the present invention. The perspective view which shows the disk drive part provided in the housing | casing of the apparatus Perspective view showing the inside of the disk drive The perspective view which shows the state in which the disc was carried in to the predetermined position. The perspective view which shows the bottom face side of the slider which comprises a disk conveyance mechanism Partial enlarged view of the slider Schematic plan view showing the state where the outer peripheral edge of the disc is clamped by the clamping means Schematic front view showing a state in which the outer peripheral edge of the disk is picked by the clamping means Explanatory drawing which showed the state of FIG. 8 for convenience Perspective view showing components of the clamping means Bottom view of the slider Schematic bottom view showing another embodiment of the slider The perspective view which shows the state in which the outer periphery part of the disk was clamped by the clamping means Explanatory drawing showing the disk loading status Schematic plan view showing how the disc is loaded Schematic side view showing how the disc is loaded The elements on larger scale which show the state where the outer periphery part of the disk was clamped by the clamping means The perspective view which shows the state just before the outer periphery part of a disc is clamped by the clamping means. Operation explanation diagram when unloading a disk Operation explanatory diagram of the clamping means The top view which shows the apparatus example of the stopper which assists clamping of the carrying-out disc by a clamping means Side view of chassis Explanatory drawing which shows the state which the end surface of the disk contacted the stopper of FIG. Operation illustration of the stopper Front schematic diagram showing the part of the disk supporter with the same stopper Explanatory drawing showing a state in which the disc is supported by the disc supporter part A perspective view showing a state where a light source faces the end face of the disc Explanatory drawing partially enlarged showing the state where the light source faces the end face of the disc Explanatory drawing showing the progress of light in the disc Perspective view showing the drive system of the slider Perspective view showing the drive system of the slider Side view of the slider drive system partially enlarged XX sectional drawing in FIG. A plan view showing a part of a mechanism provided in a disk drive unit The perspective view which shows the state before carrying in a disk (after carrying out) A perspective view showing a state in which a disc is being carried in The perspective view which shows the state in which the carried-in disc was chucked. The top view which shows the example of a change of the mechanism shown in FIG.

Explanation of symbols

1 Housing 3 Opening 4 Drive Unit (Disk Drive Unit)
6 Clamping board 8 Turntable 9 Pickup 10 Disk transport mechanism 11 Slider 12 Transport drive section 13 Guide rail 14 Feed screw 15A, 15B Rib (surface side pressing section)
16 Pressure roller (rear side pressing part)
22 Clamping means

Claims (2)

  A disk transport mechanism for loading and unloading a disk to and from a disk drive unit including a turntable that rotates the disk, and includes a slider that reciprocates linearly in the disk loading and unloading directions. A sandwiching means for sandwiching the outer peripheral edge of the disk from the thickness direction is provided, and the disk sandwiched by the holding means on the carry-in outer peripheral edge moves along with the slider and moves in the carry-in direction and the carry-out direction. A disc transport mechanism characterized by that. The clamping means is composed of a front-side pressing portion and a back-side pressing portion that are in pressure contact with the outer peripheral edge portion on the carry-in side on both the front and back sides of the disc, both of which are acute-angled shapes that sandwich the outer peripheral edge portion of the disc from the thickness direction 2. The disk transport mechanism according to claim 1, wherein the disk transport mechanism forms a depression angle.

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