JP4192984B2 - Disk unit - Google Patents

Description

  The present invention relates to a disk device that records information on, for example, a disk such as a DVD or a CD, and reproduces information on the disk, and in particular, moves the optical pickup and drives the optical pickup and the disk by one drive motor. The present invention relates to a configuration of a disk device capable of automatically moving up and down a movable frame provided with a portion and moving a tray for loading and unloading a disk.

  With respect to the disk device that can automatically move the optical pickup, move up and down the movable frame including the optical pickup and the drive unit that drives the disk, and move the tray in and out of the tray on which the disk is placed, by one drive motor. Conventionally known. Hereinafter, a conventional configuration of this type of disk device 100 will be described with reference to FIGS. 6 is a schematic plan view showing the configuration of the conventional disk device 100, and FIG. 7 is a schematic side view of the disk device 100 as viewed from the arrow A side in FIG.

  In FIG. 6, reference numeral 1 denotes a resin chassis (only the bottom surface of the chassis is shown in FIG. 6). The chassis 1 has a disk tray 20 and a movable frame 2 for loading and unloading disks. Is attached. The movable frame 2 has a rear end portion (upper side in FIG. 6) attached to the chassis 1 so as to be rotatable. The movable frame 2 rotates around a position indicated by a chain line R and moves to a front end portion (lower side in FIG. 6). ) Is configured to move up and down.

  A spindle motor 4 with a turntable 3 on which a disk is mounted is fixed to the movable frame 2, and an optical pickup 5 that optically scans the recording surface of the disk along the guide shaft 6. It is attached so that it can move forward and backward. The movable frame 2 is attached with a drive motor 7 and a gear train 8 that rotates by the rotation of the drive motor 7. A rack 10 is integrally connected to the optical pickup 5, and the rack 10 meshes with a part of gears constituting the gear train 8, and the optical pickup 5 is moved forward and backward by being driven by a drive motor 7. It is possible. The gear train 8 can transmit the rotation of the drive motor 7 to the pinion 9 attached to the chassis 1.

  Further, the chassis 1 is provided with a support base (not shown), and a slider 11 that can reciprocate in the left-right direction indicated by an arrow a in FIG. 6 is attached to the support base. The slider 11 is provided with a rack 12 that is integrally formed. The rack 12 is configured to be able to mesh with a pinion 9 attached to the chassis 1, thereby rotating forward and backward as indicated by an arrow b of the pinion 7. The movement is converted into a reciprocating movement of the rack 12. The slider 11 is provided with guide pins 16a and 16b. The guide pins 16a and 16b are engaged with a pair of left and right guide grooves 21a and 21b integrally formed on the lower surface of the disc tray 20.

  The aforementioned up-and-down movement of the movable frame 2 is performed through the reciprocating movement of the slider 11 in the left-right direction. As shown in FIG. 7, the slider 11 is formed with a cam groove 11a composed of an upper horizontal portion, an inclined portion, and a lower horizontal portion, and a cam projection 13 formed at the front end portion of the movable frame 2 in the cam groove 11a. The movable frame 2 is raised and lowered by being guided. That is, the slider 11 is formed as a so-called cam slider.

  In the disk device 100 configured as described above, when the play mode is switched to the eject mode, the drive of the spindle motor 4 is stopped, and the optical pickup 5 moves forward via the rack 10 by the drive of the drive motor 7 (lower part of FIG. 6). Move in the direction). When the optical pickup 5 comes into contact with the spindle motor 4 and reaches the most advanced position, one rack 10a of the rack 10 configured as a double rack (the details are well-known and detailed description is omitted here). Only the advancing rack 10a further contacts the lock lever 14 attached to the chassis 1.

  The lock lever 14 is a part of a lock mechanism for preventing the slider 11 from moving in the left-right direction, and the lock lever 14 is provided so as to be vertically movable by a spring (not shown).

  After the rack 10 a comes into contact with the lock lever 14, the rack 10 a further moves forward and unlocks the slider 11 by the lock lever 14. Further, the rack 10a further moves forward and comes into contact with the inclined surface 15a of the plate-like portion 15 provided at the lower portion of the slider 11, and moves the slider 11 to the left in FIG. 6 in relation to the inclined surface 15a. Thereby, the rack 12 provided in the slider 11 and the pinion 9 driven by the rotation of the drive motor 7 mesh with each other. At this point, the movement of the rack 10a toward the slider 11 ends.

  Subsequently, the slider 11 slides to the left in FIG. 6 by the rotation of the drive motor 7 through the pinion 9 and the rack 12, and the movable frame 2 is lowered through the cam groove 11 a and the cam protrusion 13. When the movable frame 2 is lowered, the turntable 3 is lowered from the disc tray 20 (in the direction of arrow c in FIG. 7), and the disc on the turntable 3 is transferred to the tray.

  Immediately before the slider 11 is slid leftward and reaches the left end, the guide pins 16a and 16b are pressed against the corner inclined surfaces 22 of the guide grooves 21a and 21b to slightly advance the disk tray 20 and The pinion 9 meshes with a tray rack (not shown) provided on the lower surface, and at the same time, the rack 12 is detached from the pinion 9 and the edge is cut. Then, the rotation of the pinion 9 advances the disk tray 20 via the tray rack, and the disk can be taken out. If the reverse procedure is performed, the play mode is restored.

  Although the disk device 100 is configured as described above, when the disk tray 20 is in the play mode with the playback position, the slider 11 starts to move due to an impact load or the like, and the rack 12 and pinion provided in the slider 11 at an unintended timing. 9, the disk device 100 moves the optical pickup 5 by one drive motor 7 and moves the movable frame 2 including the optical pickup 5 and a drive unit (spindle motor 4) for driving the disk up and down. Further, since the tray 20 on which the disc is placed can be automatically moved in and out, there is a problem that the slider 11 starts to move during playback of the disc or the like, causing malfunction or abnormal noise. For this reason, in the conventional disk apparatus 100, the slider 12 and the pinion 9 of the slider 11 can be locked only when the slider 11 is locked by the lock mechanism including the lock lever 14 and the spring as described above, and the lock is released. It is comprised so that it may mesh.

  However, the lock mechanism provided in the disk device 100 has a problem that the number of parts increases because a lock lever and a spring are separately required. A locking mechanism that locks the slider at a predetermined position is also introduced in Patent Document 1. However, the disk loading device disclosed in Patent Document 1 moves the optical pickup 5 with one drive motor 7 and the optical pickup 5. And a disc drive 100 that can automatically move up and down a movable frame having a disc drive unit (spindle motor 4) and a disc tray 20 for loading and unloading a disc. It is not easy to apply the lock mechanism shown in Document 1 to the disk device 100.

  Conventionally, as shown in FIG. 8, a plate spring 201 having a projection 202 is integrally formed on the cam slider 200, and a lock mechanism is formed by the plate spring 201 and a lock pin 203 formed on a chassis (not shown). There is technology to do. FIG. 8 is a schematic plan view showing a configuration of a cam slider 200 provided in a conventional disk device.

In this configuration, in the play mode state, the movement of the cam slider 200 is locked because the protrusion 202 of the leaf spring 201 collides with the lock pin 203, and the cam slider 200 is switched from the play mode to the eject mode. When meshing with a gear (not shown) and moving, a certain load is applied to the leaf spring 201, so that the leaf spring 201 bends and the protrusion 202 gets over the lock pin 203 and is unlocked. In this case, since the lock mechanism can be integrally formed with the cam slider and the chassis constituting the disk device, there is an advantage that the number of parts does not increase. However, when a large impact load is applied to the disk device so that the leaf spring 201 is displaced, the lock is easily released, and the cam slider 200 cannot be reliably locked.
Japanese Utility Model Publication No. 8-848

  From the above, it can be considered that the cam slider locking mechanism is configured as shown in FIG. FIG. 9 is a view showing an examination example of the locking mechanism for the gum slider, which the present applicant has studied before inventing the locking mechanism for the cam slider of the present invention.

  As shown in FIG. 9A, the cam slider 300 is integrally formed with an L-shaped plate spring 301 in a plan view, and the plate spring 301 can be displaced in the vicinity where the plate spring 301 is formed. A notch 302 is provided to provide space. In addition, fixing portions 303a and 303b are formed in a chassis (not shown) constituting the disk device.

  The tip portion 301a of the leaf spring 301 provided in an L shape in plan view is adapted to engage with the fixed portion 303a in the play mode state, whereby the cam slider 300 is locked in its movement. The lock is released when the rack 304 attached to the optical pickup advances in the direction of the leaf spring 301 and pushes the leaf spring 301. That is, the leaf spring 301 pushed by the rack 304 is deformed so that the tip portion 301a is disengaged from the fixed portion 303a and is pushed out into the groove 305 formed between the fixed portion 303a and the fixed portion 304a. The lock of the cam slider 300 is released.

  In such a configuration, the leaf spring 301 is integrally formed with the cam slider 300, and the fixing portion 303a with which the leaf spring 301 is engaged can be integrally formed with the chassis, so that the cam slider lock mechanism is configured without increasing the number of parts. can do. However, in such a configuration, the direction in which the leaf spring 301 is pressed (the direction in which the leaf spring 301 is deformed) and the direction in which the tip portion 301 a formed in an L shape on the leaf spring 301 extends are parallel. When the leaf spring 301 formed integrally with the cam slider 300 is deformed due to poor molding or the like, the tip portion 301a of the leaf spring 301 is inclined with respect to the fixed portion 303a as shown in FIG. There is a problem that a phenomenon such as a decrease in certainty is likely to occur. In order to increase the locking reliability, it is conceivable to increase the engagement margin of the distal end portion 301a of the leaf spring 301. In this case, however, the width of the groove 305 needs to be increased, and there is a design restriction. There is also the problem of increasing.

  In view of the above problems, an object of the present invention is to move an optical pickup, move up and down a movable frame including an optical pickup and a drive unit that drives a disk, and a tray on which the disk is placed by a single drive motor. By providing a disk device having a lock mechanism that can securely lock a slider that allows the movable frame to move up and down, and that does not increase costs due to the addition of parts. is there.

  In order to achieve the above object, the present invention provides a chassis, a tray that can be inserted into and removed from the chassis and on which a disk is placed, and that can be moved up and down relative to the chassis to drive the disk. A movable frame having a drive unit and an optical pickup capable of reading information on the disk, and a slider formed on the chassis so as to be movable in a direction perpendicular to the tray insertion / removal direction and capable of moving the movable frame up and down And a lock mechanism for selectively fixing the slider at a predetermined position and releasing the lock at a predetermined timing, and driving the drive motor to drive the tray in and out. In the disk device that automatically moves the optical pickup and moves the movable frame up and down, the lock The structure is attached to the optical pickup and is movable toward the slider side by driving of the drive motor, a plate-like portion that is elastically deformed, and provided on the tip side of the plate-like portion to move the movement A cylindrical tip extending in the direction perpendicular to the direction of movement of the member and extending toward the bottom surface of the chassis; an elastic portion formed integrally with the slider; and formed on the chassis and formed of the elastic portion. An engagement portion provided to be engageable with the tip portion, and the slider is locked at the predetermined position by the engagement between the tip portion and the engagement portion, and moves toward the slider side of the moving member. As a result of this movement, the tip portion is pressed by the moving member and the plate-like portion is deformed, and the engagement between the tip portion and the engagement portion is released to release the lock.

  In order to achieve the above object, the present invention provides a chassis, a tray that is provided so as to be able to be inserted into and removed from the chassis, and on which the disk is placed, and is provided so as to be movable up and down relative to the chassis. A movable frame having a driving unit to be driven and an optical pickup capable of reading information on the disc, and a movable frame formed on the chassis so as to be movable in a direction perpendicular to the tray insertion / removal direction, the movable frame can be moved up and down. A slider, and a lock mechanism that selectively locks the slider at a predetermined position and releases the lock at a predetermined timing, and moves the tray in and out by driving one drive motor. And a disk device that automatically moves the optical pickup and the movable frame. And a movable member that is attached to the optical pickup and is movable toward the slider side by driving of the drive motor, a plate-like portion that is elastically deformed, and provided at a tip side of the plate-like portion. A tip portion extending in a direction parallel to the moving direction of the moving member and extending toward the bottom surface of the chassis; an elastic portion formed integrally with the slider; and formed in the chassis and the elastic portion. An engaging portion provided to be engageable with the distal end portion, and the slider is locked at the predetermined position by the engagement between the distal end portion and the engaging portion, and the moving member is moved toward the slider side. The tip is pressed by the moving member by the movement to deform the plate-like portion, and the engagement between the tip and the engaging portion is released to release the lock.

  According to the present invention, in the disk device configured as described above, the tip end portion extends in a direction perpendicular to a moving direction of the moving member and in a bottom direction of the chassis.

  According to the present invention, in the disk device having the above-described configuration, the tip is formed in a columnar shape.

  In order to achieve the above object, the present invention provides a chassis, a tray that is provided so as to be able to be inserted into and removed from the chassis, and on which the disk is placed, and is provided so as to be movable up and down relative to the chassis. And a movable frame having an optical pickup capable of reading information on the disk, and a movable frame formed on the chassis so as to be movable in a direction perpendicular to the tray insertion / removal direction, and the movable frame can be moved up and down. A slider, and a lock mechanism that selectively locks the slider at a predetermined position and releases the lock at a predetermined timing, and moves the tray in and out by driving one drive motor. And a disk device that automatically moves the optical pickup and the movable frame. And a moving member that is attached to the optical pickup and is movable toward the slider side by driving of the drive motor, and is integrally formed with the chassis and extends in a direction substantially orthogonal to the moving direction of the moving member. An elastic portion having a rod-like portion and rotating the rod-like portion by elastic deformation, and an engaging portion provided on the slider and engageable with the rod-like portion, wherein the rod-like portion is engaged. The slider is locked at the predetermined position by engaging with a portion, and the rod-shaped portion is pressed against the moving member by the movement of the moving member toward the slider, so that the elastic portion is elastically deformed, and the rod-shaped The lock is released by releasing the engagement between the engagement portion and the engagement portion.

  According to the present invention, in the disk device configured as described above, both ends of the elastic portion are fixed to the chassis.

  According to the first configuration of the present invention, the lock mechanism includes a moving member that is conventionally attached to the optical pickup, an elastic portion that is integrally formed with the slider, and an engagement portion that is formed on the chassis. A lock mechanism can be formed without increasing the number of points. The elastic portion includes a plate-like portion that can be elastically deformed, and a tip portion that is provided on the tip side of the plate-like portion and extends in the direction perpendicular to the moving direction of the moving member and extends toward the bottom surface of the chassis. Since it is a structure, even if an elastic part deform | transforms by a molding defect, possibility that the engagement margin with respect to the fixing | fixed part of a front-end | tip part can be reduced can be made low. Further, when increasing the engagement allowance, it is not necessary to increase the width of the groove provided on the chassis side, and there are few design restrictions. Furthermore, since the tip portion of the elastic portion is formed in a columnar shape, even when the elastic portion is deformed at the time of manufacture, the state of the contact surface between the fixed portion and the tip portion does not change, and a stable locking performance is obtained. be able to.

  Further, according to the second configuration of the present invention, the lock mechanism includes a moving member that is conventionally attached to the optical pickup, an elastic portion that is integrally formed with the slider, and an engaging portion that is formed on the chassis. The lock mechanism can be formed without increasing the number of parts. The elastic portion includes: a plate-like portion that can be elastically deformed; and a tip portion that is provided on the tip side of the plate-like portion and that extends in a direction parallel to the moving direction of the moving member and extends toward the bottom surface of the chassis. Therefore, even if the elastic portion is deformed due to poor molding, the possibility of reducing the engagement margin of the tip portion with respect to the fixing portion can be reduced.

  Further, according to the third configuration of the present invention, in the disk device of the second configuration, the tip is configured to extend in the direction perpendicular to the moving direction of the moving member and toward the bottom surface of the chassis. In addition, it is difficult to be affected by the molding failure of the elastic portion, and it is not necessary to increase the width of the groove provided on the chassis side in order to increase the engagement margin, and there are few design restrictions.

  According to the fourth configuration of the present invention, in the disk device having the second or third configuration, the elastic portion is deformed during manufacture because the tip portion of the elastic portion is formed in a cylindrical shape. Even in this case, the state of the contact surface between the fixed portion and the tip portion does not change, and stable locking performance can be obtained.

  According to the fifth configuration of the present invention, the lock mechanism includes a moving member attached to the conventional optical pickup, an elastic portion integrally formed with the chassis, and an engagement portion formed on the slider. Therefore, the lock mechanism can be formed without increasing the number of parts. In addition, since the slider can be reliably fixed at a predetermined position by the rod-shaped portion and the engaging portion formed on the slider, which constitute the lock mechanism, the lock is reliable.

  According to the sixth configuration of the present invention, in the disk device having the fifth configuration, since the elastic portion integrally formed with the chassis is supported at both ends, the lock mechanism exhibits stable performance. It is possible.

  Embodiments of the present invention will be described below with reference to the drawings. The overall configuration of the disk device is basically the same as the conventional configuration except for the slider portion. For this reason, portions that are the same as those of the conventional disk device 100 shown in FIGS. 6 and 7 are denoted by the same reference numerals, and description thereof is omitted unless particularly necessary. Further, the embodiment shown here is an example, and the present invention is not limited to the embodiment shown here.

(First embodiment)
FIG. 1 is a diagram showing the configuration of the disk device of the first embodiment, and is a schematic plan view showing the periphery of a slider 11 in an enlarged manner. In FIG. 1, the optical pickup 5 is in contact with the spindle motor 4 and the rack 10 a attached to the optical pickup 5 is moving forward toward the slider 11. That is, the state immediately before the slider 11 is moved by switching from the play mode to the eject mode is shown.

  The slider 11 according to the first embodiment includes a lock lever 14 (see FIG. 6) constituting a lock mechanism for locking the slider 11 shown in the conventional example, and a plate-like portion 15 (see FIG. 6) that functions as a trigger for the movement of the slider 11. Is not formed. Instead, as shown in FIG. 1, the slider 11 is provided with an elastic portion 31, a notch hole 32, and a notch groove 33, an engaging portion 34 on the chassis 1, and a trigger pin 35 on the rack 10a. Is provided. Here, the rack 10 a, the elastic portion 31, and the engaging portion 34 function as the lock mechanism 30, and the notch groove 33 and the trigger pin 35 function as a movement trigger of the slider 11.

  Hereinafter, the details of the lock mechanism 30 will be described. First, the elastic part 31 and the engaging part 34 which comprise the lock mechanism 30 are demonstrated. Since the rack 10a is the same as the rack 10a provided in the conventional disk device 100, the description thereof is omitted.

  FIG. 2 is an enlarged perspective view of a part of the slider 11 shown in FIG. As shown in FIG. 2, the elastic part 31 formed in the slider 11 is composed of a plate-like part 31a and a columnar tip part 31b formed on the tip side of the plate-like part 31a. The elastic portion 31 is integrally formed with the slider 11 formed of a resin such as polyacetal resin. When the rack 10a of the optical pickup 5 advances in the direction of the slider 11, the tip of the rack 10a and the elastic portion 31 are in contact with each other. The arrangement is adjusted so that it touches.

  The plate-like portion 31 a has a plate-like surface arranged in parallel with the vertical direction, and one end side (side that is not the tip portion 31 b) is fixed to the slider 11. For this reason, the plate-like portion 31a is applied with a pressing force by the rack 10a when the tip of the rack 10a abuts on the elastic portion 31 and the rack 10a further advances toward the slider 11 (in the direction of arrow B in FIG. 2). Elastically deforms. The slider 11 is formed with a notch 32 so as to surround the elastic portion 31, so that the elastic portion 31 can be deformed without colliding with the slider 11 when pressed by the rack 10 a. It has become.

  The tip portion 31b constituting the elastic portion 31 corresponds to the direction in which the rack 10a advances toward the slider 11 (in this embodiment, the direction indicated by the arrow B in FIG. 2 also corresponds to the deformation direction of the plate-like portion 31a. In the direction orthogonal to the bottom of the slider 11 (bottom surface side of the chassis 1) and extending from the plate-like portion 31a, whereby the tip portion 31b has a function as a hook. The details can be engaged with an engaging portion 34 described later. In addition, the engagement allowance with respect to the engaging part 34 of the front-end | tip part 31b which functions as a hook can be changed by changing the attachment angle with respect to the slider 11 of the plate-shaped part 31a.

  On the lower side of the slider 11, there is provided a substantially rectangular parallelepiped engaging portion 34 that is integrally formed with the chassis 1 and extends in the sliding direction of the slider 11 (left and right direction in FIG. 1). The engaging portion 34 is provided on one surface 34a thereof so as to be engageable with a tip portion 31b of the elastic portion 31 formed on the slider 11. Further, the engaging portion 34 can be engaged with the tip portion 31b, and the height thereof is adjusted so that it does not collide with other portions of the slider 11 when the slider 11 slides.

  Next, the operation of the lock mechanism 30 configured as described above will be described. When the disk device is in the play mode, the slider 11 is positioned on the right side of FIG. 1 and the elastic portion 31 provided on the slider 11 is engaged with the engaging portion 34 until the unlocking operation is performed. Therefore, it cannot slide in the left direction in FIG. 1 and is locked.

  When the play mode is switched to the eject mode, the optical pickup 5 abuts on the spindle motor 4 side as described in the conventional example, and the rack 10a attached to the optical pickup 5 moves forward toward the slider 11 in the figure. 1 state. When the front end of the rack 10a comes into contact with the elastic portion 31 and the rack 10a further moves forward, the plate-like portion 31a of the elastic portion 31 is deformed in the direction of arrow B in FIG. Is disengaged. Thereby, the lock of the slider 11 by the lock mechanism 30 is released.

  At the same time that the lock is released, the trigger pin 35 provided on the rack 10a is guided by the notch groove 33, and the slider 11 is moved in the left direction by applying the force in the left direction in FIG. . At this time, the elastic part 31 slides in a state where the tip part 31 a is pressed against the one surface 34 b of the engaging part 34. Thereafter, the rack 12 of the slider 11 is engaged with the pinion 9, and the slider 11 is slid leftward by driving of the drive motor 7 (see FIG. 6). Also at this time, the distal end portion 31 a slides to the left with the elastic portion 31 pressed against the surface 34 b of the engaging portion 34.

  When the slider 11 moves from the left direction to the right direction (this corresponds to the case where the eject mode is switched to the play mode), the elastic portion 31 also slides to the right while being pressed against the one surface 34b of the engaging portion 34. To do. Then, when the surface 34b of the engaging portion 34 disappears, it tries to return to the direction in which it engages with the surface 34a of the engaging portion 34 by elastic force. At this time, the rack 10a also moves in a direction away from the slider 11. Then, the elastic portion 31 and the engaging portion 34 are engaged again, and the slider 11 is locked.

  In the first embodiment described above, the tip 31b of the elastic portion 31 is in a direction orthogonal to the forward direction of the rack 10a (the moving direction of the rack 10a toward the slider 11) and on the lower side (in FIG. 2). Although it is configured to extend in the (C direction), it is not necessarily required to be in a direction orthogonal to the forward direction of the rack 10a, and may be inclined from the vertical. However, if the angle is too oblique, it is necessary to increase the size of the engagement surface 34a of the engagement portion 34. Therefore, the direction orthogonal to the forward direction of the rack 10a is preferable.

  Moreover, in this embodiment, although the front-end | tip part 31a of the elastic part 31 is made into the column shape, it is not the meaning limited to this, A various change is possible in the range which does not deviate from the objective of this invention. That is, as shown in FIG. 3, the tip 31b may have a prismatic shape or the like. In the configuration shown in FIG. 3, the plate-like surface of the plate-like portion 31a is not inclined with respect to the surface 34b of the engaging portion 34 as in the present embodiment. The plate-like surface is parallel to the fixed portion 34, but it is of course possible to change it in this way.

  Furthermore, in the present embodiment, the trigger pin 35 provided on the rack 10a is guided by the notch groove 33 so that the rack 12 of the slider 11 meshes with the pinion 9. However, the present invention is not limited to this and is shown in the conventional example. Of course, it does not matter if the slider 11 starts to move when the tip of the rack 10a comes into contact with a plate-like portion having a trigger surface (not shown) provided on the slider 11 as in the disk device 100.

(Second Embodiment)
The disk device according to the second embodiment is the same as the disk device according to the first embodiment except for a lock mechanism that locks the slider 11 and a configuration in which the unlocked slider 11 starts to move. For this reason, only a different point from 1st Embodiment is demonstrated using FIG.4 and FIG.5. Here, FIG. 4 is a diagram showing the configuration of the disk device of the second embodiment, and is a schematic plan view showing the periphery of the slider 11 in an enlarged manner. 5 is a schematic diagram showing a cross-section at the DD position in FIG. 4, FIG. 5A is a state in which the slider 11 is locked, and FIG. 5B is a state in which the slider 11 is unlocked. State.

  4 shows a state in which the optical pickup 5 is in contact with the spindle motor 4 and the rack 10a attached to the optical pickup 5 moves forward toward the slider 11. FIG. That is, the state immediately before the slider 11 is moved by switching from the play mode to the eject mode is shown.

  The configuration in which the unlocked slider 11 starts to move, which is the difference between the first embodiment and the second embodiment, is the same as that of the conventional disk device 100 (see FIGS. 6 and 7). That is, when the front end of the rack 10a moves forward toward the slider 11, the front end of the rack 10a and the plate-like portion 15 having the trigger surface 15a provided at the lower portion of the slider 11 come into contact with each other so that the slider 11 starts to move. It is configured.

  Next, the configuration of the lock mechanism 40 provided in the disk device, which is the difference between the first embodiment and the second embodiment, will be described. The lock mechanism 40 includes a rack 10a attached to the optical pickup 5, a bar-like portion 43 at the center thereof, and leaf springs 42 whose both ends are supported by support portions 41a and 41a provided in the chassis 1. And a projection 44 having a rectangular shape in plan view formed integrally with the slider 11.

  The plate spring 42 is formed integrally with the support portions 41a and 41a of the chassis 1, and as shown in FIG. 5, the plate surface is inclined by 45 ° with respect to the vertical direction E (paper surface direction in FIG. 4). It is in a state. The rod-shaped portion 43 formed integrally with the leaf spring 42 is formed in a substantially rectangular parallelepiped shape having a longitudinal direction in a direction parallel to the vertical direction E, and its bottom surface 43a is oblique to the traveling direction F of the rack 10a. It has become. Further, the upper side and the lower side of the rod-shaped portion 43 are not fixed to the chassis 1, and the rod-shaped portion 43 is supported by the leaf spring 43 and floats with respect to the chassis 1. For this reason, the rod-shaped part 43 can be rotated in the direction of the arrow G shown in FIG.

  As shown in FIG. 4, the formation position of the leaf spring 42 is adjusted so that the rack 10 a and the rod-shaped portion 43 abut when the rack 10 a moves forward toward the slider 11 side. Further, the projecting portion 44 formed integrally with the slider 11 is adjusted in position and size so as to engage with the rod-shaped portion 43 when the leaf spring 42 is not deformed.

  Next, the operation of the lock mechanism 40 configured as described above will be described. When the disk device is in the play mode, the slider 11 is positioned on the right side of FIG. 4, and the projection 44 provided on the slider 11 is engaged with the rod-like portion 43 until the unlocking operation is performed. 1 cannot be slid in the left direction, and is locked.

  When the play mode is switched to the eject mode, the optical pickup 5 abuts on the spindle motor 4 side as described in the conventional example, and the rack 10a attached to the optical pickup 5 moves forward toward the slider 11 in the figure. 1 state. And if the front-end | tip of the rack 10a contact | abuts to the rod-shaped part 43 and the rack 10a further advances, the rod-shaped part 43 will be lifted to the vertical direction upper side, and will make a predetermined angle (45 degrees in this embodiment) with respect to the vertical direction E. The plate spring 42 formed is deformed, and the rod-like portion 43 rotates in the counterclockwise direction indicated by the arrow G in FIG. As a result, the engagement between the rod-shaped portion 43 and the projection 44 is released, and the lock of the slider 11 by the lock mechanism 40 is released.

  Even after the lock is released, the rack 10a further advances, contacts the plate-like portion 15 provided below the slider 11, and moves the slider 11 to the left according to the shape of the trigger surface 15a. Thereafter, the rack 12 of the slider 11 is engaged with the pinion 9, and the slider 11 is slid leftward by driving of the drive motor 7 (see FIG. 6).

  Further, when the slider 11 moves from the left direction to the right direction (corresponding to the case where the eject mode is switched to the play mode), the engagement between the rack 12 and the pinion 9 of the slider 11 is released, and the rack 10a is released. It moves in a direction away from the slider 11, whereby the pressing of the rod-shaped portion 43 by the rack 10 a is also released, and the leaf spring 42 is restored from the deformed state to the original state, and the protruding portion of the rod-shaped portion 43 and the slider 11. 44 is engaged, and the slider 11 is locked.

  In the second embodiment described above, the leaf spring 42 is arranged to be inclined by 45 ° with respect to the vertical direction E, but is not necessarily limited to this configuration and does not depart from the spirit of the present invention. The inclination angle of the leaf spring 42 can be changed. In this embodiment, the plate spring 42 is supported at both ends by using the support portions 41a and 41b. However, the present invention is not limited to this, and one-side support may be used.

  As described above, the present invention can realize the locking of the slider that enables the movable frame to be moved up and down at a low cost, and the drive unit that moves the optical pickup and drives the optical pickup and the disk by one drive motor. It is very useful for a disk device that can automatically move up and down a movable frame provided with the above and a tray tray for loading and unloading a disk.

These are figures which show the structure of the disc apparatus of 1st Embodiment, and are the schematic plan views which expanded and showed the periphery of the slider. FIG. 2 is a perspective view showing a part of the slider of FIG. 1 in an enlarged manner. FIG. 3 is a view showing a modification of the disk device of the first embodiment. These are figures which show the structure of the disc apparatus of 2nd Embodiment, and are the schematic plan views which expanded and showed the periphery of the slider. These are the schematic which showed the cross section of the DD position of FIG. These are the schematic plan views which show the structure of the conventional disc apparatus. These are the schematic side views which looked at the disk apparatus of FIG. 6 from the arrow A side. These are the schematic plan views which show the structure of the cam slider with which the conventional disc apparatus is provided. These are the figures which showed the examination example of the locking mechanism of a gum slider which the present applicant examined until inventing the locking mechanism of the cam slider of this invention.

Explanation of symbols

1 Chassis 2 Movable frame 4 Spindle motor (disk drive)
5 Optical pickup 7 Drive motor 10a Rack (moving member)
DESCRIPTION OF SYMBOLS 11 Slider 20 Disc tray 30, 40 Lock mechanism 31 Elastic part 31a Plate-like part 31b Tip part 34 Engagement part 42 Leaf spring (elastic part)
43 Rod-shaped part 44 Projection part (engagement part)

Claims (6)

The chassis,
A tray that is provided so as to be able to be inserted into and removed from the chassis and on which a disk is placed;
A movable frame provided so as to be movable up and down with respect to the chassis, and having a drive unit for driving the disk and an optical pickup capable of reading information on the disk;
A slider formed on the chassis so as to be movable in a direction perpendicular to the tray insertion / removal direction, and capable of moving the movable frame up and down;
A lock mechanism that can selectively lock and unlock the slider at a predetermined position at a predetermined timing;
With
In the disk device that automatically moves the tray in and out, moves the optical pickup, and moves the movable frame up and down by driving one drive motor.
The locking mechanism is
A moving member attached to the optical pickup and movable toward the slider side by driving of the drive motor;
A plate-shaped portion that is elastically deformed, and a column-shaped tip portion that is provided on the tip end side of the plate-like portion and extends in the direction perpendicular to the moving direction of the moving member and toward the bottom surface of the chassis. An elastic part integrally formed with the slider;
An engaging portion that is formed on the chassis so as to be engageable with the tip portion of the elastic portion;
Consisting of
The slider is locked at the predetermined position by the engagement between the tip portion and the engagement portion,
The movement of the moving member toward the slider causes the elastic portion to be pressed by the moving member, so that the plate-like portion is deformed, and the engagement between the distal end portion and the engaging portion is released to release the lock. A disk device characterized by performing The chassis,
A tray that is provided so as to be able to be inserted into and removed from the chassis and on which a disk is placed;
A movable frame that is provided so as to be movable up and down with respect to the chassis, and has a drive unit that drives the disk and an optical pickup that can read information on the disk;
A slider formed on the chassis so as to be movable in a direction perpendicular to the tray insertion / removal direction, and capable of moving the movable frame up and down;
A lock mechanism that can selectively lock and unlock the slider at a predetermined position at a predetermined timing;
With
In the disk device that automatically moves the tray in and out, moves the optical pickup, and moves the movable frame up and down by driving one drive motor.
The locking mechanism is
A moving member attached to the optical pickup and movable toward the slider side by driving of the drive motor;
The slider comprising: a plate-like portion that is elastically deformed; and a tip portion that is provided on the tip side of the plate-like portion and extends in the direction parallel to the moving direction of the moving member and toward the bottom surface of the chassis. An elastic part integrally molded with
An engaging portion that is formed on the chassis so as to be engageable with the tip portion of the elastic portion;
Consisting of
The slider is locked at the predetermined position by the engagement between the tip portion and the engagement portion,
The movement of the moving member toward the slider causes the elastic portion to be pressed by the moving member, thereby deforming the plate-like portion, releasing the engagement between the tip portion and the engaging portion, and releasing the lock. A disk device characterized by performing   The disk device according to claim 2, wherein the front end extends in a direction orthogonal to a moving direction of the moving member and extends toward a bottom surface of the chassis.   4. The disk device according to claim 2, wherein the tip portion is formed in a cylindrical shape. The chassis,
A tray that is provided so as to be able to be inserted into and removed from the chassis and on which a disk is placed;
A movable frame provided so as to be movable up and down with respect to the chassis, and having a drive unit for driving the disk and an optical pickup capable of reading information on the disk;
A slider formed on the chassis so as to be movable in a direction perpendicular to the tray insertion / removal direction, and capable of moving the movable frame up and down;
A lock mechanism that can selectively lock and unlock the slider at a predetermined position at a predetermined timing;
With
In the disk device that automatically moves the tray in and out, moves the optical pickup, and moves the movable frame up and down by driving one drive motor.
The locking mechanism is
A moving member attached to the optical pickup and movable toward the slider side by driving of the drive motor;
An elastic part integrally formed with the chassis, having a rod-like part extending in a direction substantially perpendicular to the moving direction of the moving member, and rotating the rod-like part by elastic deformation;
An engaging portion provided on the slider and engageable with the rod-shaped portion;
Consist of
The slider is locked at the predetermined position by engaging the rod-shaped portion with the engaging portion,
When the moving member moves toward the slider, the rod-shaped portion is pressed by the moving member, the elastic portion elastically deforms, and the engagement between the rod-shaped portion and the engaging portion is released to release the lock. A disk device characterized in that:   The disk device according to claim 5, wherein both ends of the elastic portion are fixed to the chassis.

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