JP2008034059A - Disk unit - Google Patents

Abstract

[PROBLEMS] To prevent unexpected impacts during transportation, to release a restraining lever, to allow a disc reproducing means to tilt upward with a rotating shaft side as a fulcrum, and to turn a turntable into contact with other objects, thereby deteriorating reproducing performance. There was a fear of leading to.
One or both of a disk reproducing means and a side plate of the apparatus main body is provided with a rising restricting means for restricting the rising of the disk reproducing means, and the reproducing means may be displaced more than specified. Therefore, it is possible to reliably prevent the performance deterioration of the turntable of the reproducing means.
[Selection] Figure 8

Description

  The present invention relates to a disk apparatus, and more particularly to a disk apparatus that stores and holds a predetermined number of disks in a main body of the apparatus and reproduces a disk selected from the disks.

In this type of disk device, a plurality of disks are stored and held in the apparatus main body, the selected disk and the disk above the selected disk are moved upward, and the disk below the selected disk is moved downward. A disk holding means that moves and divides it into two parts vertically, and is supported by the device main body so that one end of the device can be rotated by a rotation shaft.When not reproduced, it is retracted to a retreat position parallel to the side plate of the device main body, Disc playback means for entering between the selected disc and the disc moved downward and placing the selected disc on a turntable for playback.
The disc reproducing means is held at the tip by the holding lever of the slide plate that moves along the inner surface of the rear plate of the apparatus main body at the retracted position. However, if an unexpected excessive impact is applied to the disk device during transportation, for example, the holding lever that holds the disk reproducing means may come off. At this time, the disk reproducing means is tilted upward with the pivot shaft side as a fulcrum, and the turntable comes into contact with a mechanism member (such as a disk change driving mechanism) provided on the top plate, so that the height and swing of the turntable change. May occur.
Conventionally, as disclosed in Patent Document 1, in a disk apparatus of a system in which a disk is driven by a motor, there has been a technique that prevents damage to printing on the disk surface even when an external impact is applied.

See Japanese Patent No. 3047786 (0068), (0069), FIG. 15, FIG. 16 (A), (B).

  Since the conventional disk device is configured as described above, in the state where the disk reproducing means is retracted to the retracted position, when the unexpected excessive shock is applied and the restraining lever is released, the disk reproducing means is rotated. Inclining upward with the moving shaft side as a fulcrum, changes occur in the height and deflection of the turntable. In such a case, if the disc device is a CD playback device, slight changes in the height and swing of the turntable will not affect the performance, but if the disc device is a DVD playback device, the relative angle between the disc and the pickup There is a problem that even a slight change in the turntable may lead to deterioration in reproduction performance. In addition, what is described in Patent Document 1 protects a disk against external impact, but does not prevent damage to a turntable provided in a disk reproducing means.

  The present invention has been made in order to solve the above-described problems, and prevents the turntable from being subjected to a load that causes deterioration in reproduction performance even when an excessive impact is applied to the disk device. With the goal.

  In the disk device according to the present invention, a predetermined number of disks are stored and held in the apparatus main body, the selected disk and the disk D above the selected disk are moved upward, and the disk below the selected disk. The disk holding means that divides the disk into two parts vertically, and one end side of the apparatus main body is rotatably supported by a rotation shaft, and when it is not reproduced, it is retreated to a retreat position parallel to the side plate of the apparatus main body, In a disc apparatus having disc playback means for entering between the selected disc and the disc moved downward during playback and placing the selected disc on a turntable for playback, the disc playback means And a side plate of the apparatus main body are provided with a rise restricting means for restricting the rise of the disk reproducing means.

  According to the present invention, since either one or both of the disk reproducing means and the side plate of the apparatus main body is provided with the rising restricting means for restricting the rising of the disk reproducing means, an excessive impact is applied to the disk device, and the disk Even when the reproducing means is tilted upward with the pivot shaft side as a fulcrum, the tilt is regulated by the rise regulating member, and the turntable can be reliably prevented from coming into contact with the mechanism member provided on the top plate.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
Embodiment 1 FIG.
First, the outline of the configuration of the first embodiment will be described with reference to the drawings. The disk device 1 includes a device main body 11 including a bottom plate 11a, left and right side plates 11b and 11c, a front plate 11d, and a rear plate 11e, and a top plate 17 that covers the upper surface of the device main body 11. In the apparatus main body, there are provided a disk reproducing means 2 for reproducing the disk D, a disk conveying means 3 for taking the disk D in and out of the apparatus main body, and a disk holding means 5 for storing and holding a plurality of disks D.
The regenerating means 2 has a revolving base 8 pivotally supported at one end by a revolving shaft 12 on a bottom plate 11a, and a regenerating unit 2 held on the revolving base 8 via oil dampers 9a, 9b, 9c. The rotation base 8 is biased by the link mechanism 13 so as to rotate toward the retracted position.

  As shown in FIGS. 2 to 8, the disk storage means 5 has a plurality of trays 51 a to 51 n formed in a crescent shape, and a plurality of column bodies 52 a to hold the trays at predetermined intervals and move up and down. 52n and a large diameter rotatably attached to the top plate 17 so that gears 52a-1 to 52n-1 (only 52a-1 is shown) attached to the upper ends of the respective pillars 52a to 52n mesh with each other. The gear 58 includes guide columns 62a to 62n that are provided in parallel with the column bodies and provided between the bottom plate 11a and the top plate 17 of the apparatus main body 1. The trays 51a to 51n are provided with holding members 53a to 53n for holding the column bodies 52a to 52n at the outer peripheral tip and center, respectively. The holding members 53a to 53n are formed with recesses 53a-1 to 53n-1 for holding the pillars 52a to 52n and a receiving member 56 for receiving the peripheral edge of the disk D. The recesses 53a-1 to 53n-1 Are formed with pins 55a-1 to 55n-1 that engage with the spiral grooves 54a and 54b of the column. The receiving member 56 is provided with a spring member 57 that presses and supports the periphery of the disk D against the tray surface.

  The column bodies 52a to 52n are respectively provided with protrusions 52a-2, 52b-2, 52n-2 (not shown on the top plate side) on the upper and lower end surfaces, holes (not shown) on the top plate 17 and the bottom plate 11a. It is supported so that it can rotate by engaging with a hole (not shown). Spiral grooves 54a are formed in the upper and lower portions of the pillars 52a to 52n so that the trays 51a to 51n can be held at regular intervals, and a space for the disk reproducing means 2 to enter and exit is provided in the middle. Is formed between the selected disk D and the disk D moved downward, the spiral groove 54b connecting the upper and lower spiral grooves 54a by one rotation of the column body is formed. Further, the pressing member 63 is supported through the column body 52b and the guide columns 62a to 62n, is urged upward by the tension spring 64, receives the tray that engages with the lower spiral groove 54a, and always presses the tray upward. Engagement of the tray with the spiral groove 54b is ensured.

  The reproduction base 7 is provided with a turntable 4 on the upper surface of the tip thereof and an optical pickup 6 that moves in the radial direction of the disk D placed on the turntable 4 and reads a signal of the disk D. Further, a first lock plate 14 and a second lock plate 15 are attached to the rotating base 8, and lock claws 14 a, 14 b and 15 a for locking the reproduction base 7 are provided at the respective ends.

  The right side plate 11c, which is a component of the apparatus main body 11, is configured separately from the bottom plate in order to connect an FPC (Flexible Printed Circuit) drawn out from the disk reproducing means 2 to a servo substrate attached to the back surface of the bottom plate 11a. Has been. A slide plate 16 is attached to the inner surface of the rear plate 11e, which is a component of the apparatus body 11, and a holding lever 16a for holding the reproduction base 7 on the rotation base 8 is provided at the tip of the slide plate 16. Yes. A driving mechanism 18 for performing a disk change operation is attached to the top plate 17. A reproduction position correction member 19 is attached to the bottom plate 11a which is a component of the apparatus main body 11.

  Hereinafter, an outline of the reproduction operation will be described with reference to the drawings. First, when a disk D desired to be reproduced is inserted into the apparatus main body 11 from the disk insertion / removal port 11d-1 provided on the front plate 11d of the apparatus main body 11, the disk D is a columnar body as shown in FIG. The two pins 55a-1 to 55n-1 are placed on one tray 51a that engages with the spiral groove 54b in the middle of 52a to 52n. When the large-diameter gear 58 is driven in this state, the column bodies 52a to 52n rotate synchronously via the small-diameter gear 52a-1 meshing with the large-diameter gear 58. For this reason, the tray 51a rises to the top plate 17 side via the pins 55a-1 to 55n-1 meshing with the spiral grooves 54b of the pillars 52a to 52n, and the pins 55a-1 to 55n-1 are spirals on the upper side. By entering the groove 54a, the spring member 57 is pressed on the lower surface of the upper tray to change from the state of FIG. 7 to the state of FIG. 8, and press and support the disk D on the tray 51a.

On the other hand, when a desired one is selected from a plurality of disks D stored and held in advance in the apparatus main body 1, the pins 55a-1 to 55n-1 of the trays supporting the selected disk D are selected. When engaged with the upper spiral groove 54a, the pins 55a-1 to 55n-1 of the tray supporting the disk D below the selected disk D engage with the lower spiral groove 54a. Thus, an insertion space for the reproducing means 2 is formed between the selected disk D and the disk D below the selected disk D. When the tray pins 55a-1 to 55n-1 supporting the selected disk D are engaged with the lower spiral groove 54a, the upper tray including the selected disk D is moved to the It moves upward via the spiral groove 54b in the middle of the pillars 52a to 52n. In this case, since the spiral groove 54b is connected to the lower spiral groove 54a in only one place, after the tray pins 55a-1 to 55n-1 are engaged with the spiral groove 54b, the column body is Until one rotation, the pins 55a-1 to 55n-1 of the other trays cannot engage with the spiral groove 54b. That is, only one tray is always located in the area of the spiral groove 54b during the rotation of the column.
As described above, the selected disk D and the disk D that is above the selected disk D are moved upward, and the disk D that is below the selected disk D is moved downward to divide it vertically into two. To do. Then, along with the reproduction operation, the slide plate 16 moves in the direction of the arrow a as shown in FIG. 2, and the suppression of the reproduction base 7 by the suppression lever 16a is released.
With this opening, the rotation base 8 rotates around the rotation shaft 12 with the reproduction base 7 placed thereon, and enters between the discs that are divided into two vertically. And the guide groove 8a (FIG. 3) provided in the approach side periphery of the rotation base 8 engages with the reproduction position correction member 19 provided on the bottom plate 11a, thereby correcting the rotation position and height. The playback position is corrected. Further, the axis of the turntable 4 on the reproduction base 7 coincides with the axis of the selected disk D.
In this state, the selected disk D is lowered while being placed on the tray, and the disk D is placed on the turntable 4 on the reproduction base 7. Then, only the tray is further lowered and pulled away from the disk D to be in a reproduction state. Thereafter, the reproduction base 7 is unlocked by the lock claws 14 a and 14 b of the first lock plate 14 and the lock claws 15 a of the second lock plate 15.
Therefore, the reproduction base 7 is supported on the rotating base 8 only through the oil dampers 9a, 9b, 9c, and the disk D placed on the turntable 4 is subjected to vibration from the rotating base 8. It becomes difficult to be transmitted. In this state, the turntable 4 rotates and the optical pickup 6 moves in the radial direction of the disk D, so that reproduction is performed without any problem.
In order to eject the disk D to the outside of the apparatus after reproduction, first, the rotating base 8 is retracted to the right side plate 11c side of the apparatus body 11 in a state where the disk D to be ejected is held by the disk D holding means 5. After that, the tray on which the disk D to be ejected is moved up and down, the disk transport means 3 is operated to a position where it acts on the disk D, and the disk D is ejected outside the apparatus main body.

  When the disk device configured as described above or a set including the disk device is shipped as a product, the disk reproducing means 2 is locked at the retracted position. The reproduction base 7 is locked by the engagement bases 14a and 14b of the first lock plate 14 and the engagement claws 15a of the second lock plate 15 arranged on the rotation base 8 as described above. Is performed by integrating the reproduction base 7 and the rotation base 8. Further, the rotation base 8 is restrained by a restraining lever 16a of the slide plate 16 provided on the inner surface of the rear plate 11e, and movement in the Z direction (upward direction) is restricted. In addition, the rotation direction of the rotation base 8 is restricted by the link mechanism 13 so that the rotation base 8 cannot move during transportation. Therefore, the reproduction base 7 integrated with the rotation base 8 is similarly held in a non-movable state.

  However, since the reproducing means 2 is configured to rotate between the retracted position and the reproducing position depending on the operation mode of the disk device 1, the slide plate 16 is also moved to the position where the rotating base 8 is held and the position where it is opened. Need to move. Further, there is a demand from the market to reduce the size of the disk device 1, and a sufficient space cannot be taken for a mechanism for suppressing the rotation base 8 by the slide plate 16. However, the holding of the rotating base 8 by the slide plate holding lever 16a is required to have an impact strength necessary for an in-vehicle disk device.

On the other hand, with the globalization of production and consumption, the transportation forms of in-vehicle disk devices and audio / navigation equipment will come through various vendors, and unexpected shocks may be applied from the outside during the transportation. is there. Therefore, when the disk device 1 or the in-vehicle audio or navigation product equipped with the disk device is transported, the disk reproducing means 2 is normally retracted to the retracted position outside the outer periphery of the disk D as described above.
If an excessive impact in the Z direction is applied during transportation in such a state, there is a possibility that the rotation base 8 will be restrained by the restraining lever 16a of the slide plate 16 due to bending of the device itself. When the Z-direction restriction of the rotation base 8 is removed, the disk reproducing means 2 is supported only by the rotation shaft 12, and the Z-direction restriction on the side having the turntable 4 is in a free state.
In such a free state, the disk reproducing means tilts upward with the pivot shaft side as a fulcrum, and the turntable collides with the drive mechanism 18 that performs the disk change operation, whereby the turntable height and swing are changed. appear. For this reason, when the disc device is a DVD playback device, the relative angle between the disc D and the pickup 6 is adjusted for each device, and even a slight change in the turntable 4 may lead to deterioration in playback performance. is there.

  FIG. 8 is a perspective view of the disk reproducing means of the present invention configured so that no adverse impact is applied to the turntable 4 even if the disk reproducing means 2 is removed. FIG. 9 is a top view of the disk apparatus of FIG. 10 is a cross-sectional view taken along the line CC of FIG. 9, and FIG. 11 is a view showing a state in which the reproduction base is removed from the disk device of FIG.

  In the drawing, a protrusion 20 is integrally provided by cutting and raising a part of the right side plate 11 c which is a component of the apparatus main body 11. Other configurations are the same as those described in FIGS.

  In the transport state of the disk device 1, the disk reproducing means 2 is housed in a retracted position where it does not act on the disk D as shown in FIG. 8, and immediately after the power is supplied to the device, the disk D is inserted into the device body. The mode is set to be possible. In order to prevent mode deviation of the disk reproducing means 2 due to impact, vibration or the like during transportation, the rotation direction is urged by the link mechanism 13 in the direction opposite to the swinging, and the slide plate 16 is also urged in the Z direction. It is restrained by the restraining lever 16a. A protrusion 20 provided on the right side plate 11c is located above the reproduction base 7.

  10, the clearance between the turntable 4 and the disk change driving means 18 provided on the top plate 17 is B, the clearance between the protrusion 20 of the right side plate 11c and the reproduction base 7 is A, and A <B. Set the position of clearance A. When an excessive impact is applied in the Z direction during transportation of the disk device and the rotating base 8 is released from the holding lever 16a of the locking slide plate, the disk reproducing means 2 moves upward with the rotating shaft 12 as one fulcrum. Since the playback base 7 comes into contact with the protrusion 20, the playback means 2 can only relieve the posture and reduce the impact without receiving a large stress on the machine parts. Unnecessary load can be prevented.

At this time, since the reproducing means 2 is in a one-point support state, the reproducing base 7 and the protrusion 20 are in contact with each other and do not shake any more, so that the disk reproducing means 2 loses balance but is applied as a result. Can reduce the impact. Moreover, since A <B is set, application of external force to the turntable 4 can be prevented.
On the other hand, even if the restraining lever 16a is once removed from the rotating base 8 due to the impact as described above, when the disk device is used, the reproducing mechanism is moved after the slide plate 16 moves (withdraws from the rotating base 8). Since the part 2 rotates, there is no problem such as interference. Since the reproduction mechanism unit 2 performs the rotation position and height correction by the reproduction position correction member 19 at the reproduction position, there is no problem in reproduction performance.

  As shown in FIG. 8, an impact mitigating protrusion 20 is provided on the right side plate 11c located on the opposite side to the rotation direction so as not to obstruct the operation of the disk reproducing means 2 that performs the rotation operation. is there. The reproduction means 2 has a large number of components integrated, and in order to hold the reproduction base 7 with the protrusion 20 of the right side plate 11c while suppressing the height variation of the reproduction base 7 in the retracted position, the dimensional accuracy of each component is increased. Strict management is required, which increases costs. Therefore, in a normal state, a sufficient clearance is secured between the reproduction base 7 and the protrusion 20 of the right side plate 11c, and when the impact is applied and the disk reproduction means 2 swings greatly, the turntable 4 contacts other parts. Before the contact, the projection 20 of the right side plate 11c is set to receive the reproduction base 7.

  As described above, according to the first embodiment, since the protrusion 20 is integrally provided on the right side plate 11c on the side where the disk reproducing means 2 is turned and retracted, the disk reproducing means 2 moves from the retracted position to the disk reproducing position. There is no obstacle to doing. Further, even if an excessive impact is applied and the restraining lever 16a with respect to the reproducing means 2 is released, the reproducing means 2 does not displace more than specified due to the protrusions 20 coming into contact, and the performance of the turntable 4 of the disk reproducing means 2 Deterioration can be reliably prevented. Even if the playback means 2 is removed, there is no problem in the operation of the playback means 2, and once the disk playback means 2 has moved to the playback mode and then returned to the retracted position, the rotation base by the slide plate 16 is used. Suppression of 8 is performed normally.

Embodiment 2. FIG.
12 is a perspective view of a part of the disk device 1 showing the second embodiment, and FIG. 13 is a cross-sectional view at the same position as the CC cross section of FIG. The side plate 11c is provided with a hole 11a-1 corresponding to the protrusion 7a. In this case, the clearance between the protrusion 7a and the hole 11a-1 is E, and the protrusion 7a and the hole 11a-1 having a positional relationship such that E <B are set.

  When the disk device 1 is transported, an excessive impact is applied in the Z direction, and when the rotating base 8 is disengaged from the holding lever 16a of the locking slide plate 16, the reproducing means 2 uses the rotating shaft 12 as one fulcrum. Swings greatly. At this time, since the disk reproducing means 2 is in a single-point support state, the protrusion 7a of the reproducing base 7 and the inner surface of the long hole 11c-1 of the side plate 11c come into contact with each other, and the disk reproducing means 2 loses its balance. The applied impact can be mitigated.

  Moreover, since E <B is set, application of external force to the turntable 4 can be prevented. When the disk device 1 is subsequently used, the disk reproducing means 2 performs a rotating operation after the slide plate 16 moves (withdraws from the rotating base 8), so there is no problem such as interference. Since the disk reproducing means 2 performs the rotation position and height correction by the reproduction position correction member 19 at the reproduction position, there is no problem in reproduction performance. When the disc D is ejected or the disc change operation is performed, the slide plate 16 moves after the disc reproducing means 2 is stored in the retracted position where it does not act on the disc D, and the invitation shape 16b arranged at the tip of the slide plate 16 The rotation base 8 can be suppressed.

  As described above, according to the second embodiment, a long hole is provided in the vertical direction on the right side plate 11c on the side where the disk reproducing means 2 is rotated and stored, and a protrusion that engages with the long hole is provided on the disk reproducing means 2. Even if an excessive impact is applied and the lock is released, the disc reproducing means 2 does not displace more than specified by the contact between the protrusion and the hole edge, and the same effect as in the first embodiment is obtained. can get.

Embodiment 3 FIG.
FIG. 14 is a perspective view of the disk device showing Embodiment 3, in which the disk reproducing means 2 and the top plate 17 of the device are removed. FIG. 15 is a cross-sectional view taken along the line EE of FIG. In the third embodiment, a protrusion 22 having a longitudinal elongated hole 22a is attached to the inner surface of the right side plate 11c with a pin 21 passing through the elongated hole 22a, and the bending hook 11c-1 of the projection 21 and the right side plate 11c is attached. A tension spring 23 is provided between the projections 22 and a spring bias is applied to the protrusions 22 to improve the buffering effect.

  The operation stroke F of the projection 22 and the clearance between the turntable 4 and the disk change drive mechanism 18 provided on the top plate 17 as in the first embodiment are set to B, and F <B, and the reproduction base in the initial state. 7 and the protrusion 22 are set at positions where they do not interfere with each other. When an excessive impact is applied to the disk device 1, after the reproduction base 7 is detached from the slide plate 16, the reproduction base 7 is greatly shaken about the rotating shaft as a fulcrum and comes into contact with the protruding member 22, and the tension spring 23 is moved. Extend the operating stroke F. Since the disk reproducing means 2 is supported at one point by the rotating shaft 12 after the extension spring 23 has been extended for a full stroke, the balance transmitted is lost, but the impact transmitted to the disk reproducing means 2 can be reduced, and the turntable can be reduced. 4 and the top plate 17 can be prevented from coming into contact with each other.

  As described above, according to the third embodiment, another member is attached as a protrusion to the inner surface of the right side plate, and a tension spring is provided between the protrusion and the right side plate. When the reproducing means tries to push up the protrusion, the pulling spring is extended to improve the buffering effect, prevent the turntable of the disk reproducing means from coming into contact with other objects, and reliably reduce the performance of the reproducing means. Can be prevented.

1 is a perspective view of a disk device according to the present invention. It is the state figure which removed the top plate of FIG. FIG. 3 is a state diagram with the reproduction base of FIG. 2 removed. It is the right view which removed the side plate of FIG. It is a perspective view which shows a disk holding means. It is a perspective view of the mechanism part which raises / lowers a disk. It is a perspective view which shows a tray. 1 is a perspective view of a part of a disk device showing a first embodiment. FIG. 9 is a top view of the disk device of FIG. 8. It is CC sectional drawing of FIG. It is the state figure which removed the reproduction | regeneration base of FIG. FIG. 6 is a perspective view of a part of a disk device showing a second embodiment. It is DD sectional drawing of FIG. FIG. 6 is a perspective view of a part of a disk device showing a third embodiment. It is EE sectional drawing of FIG.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Disc apparatus, 2 Disc reproduction | regeneration means, 3 Disc conveyance means, 4 Turntable, 5 Disc holding means, 6 Pickup, 7 Playback base, 8 Rotation base, 11a Bottom plate, 11b Left side plate, 11c Right side plate, 11d Front plate, 11e Rear plate, 12 rotating shaft, 17 top plate.

Claims (4)

  A predetermined number of disks are stored and held in the apparatus body, and the selected disk and the disk above the selected disk are moved upward, and the disk below the selected disk is moved downward to move up and down. The disk holding means for dividing into two parts, and one end side of the apparatus main body are rotatably supported by a rotation shaft. When not reproduced, the disk is retracted to a retreat position parallel to the side plate of the apparatus main body, and the selected is selected during reproduction. A disc reproducing unit that enters between the disc moved and the disc moved downward and places the selected disc on a turntable for reproduction, wherein the disc reproducing unit and the main body of the device A disk apparatus comprising a rising restricting means for restricting the rising of the disk reproducing means on either one or both of the side plates.   2. The disk apparatus according to claim 1, wherein the ascending restricting means is a protrusion provided integrally on a side plate of the apparatus main body.   2. The disk device according to claim 1, wherein the ascending restriction member comprises a protrusion provided integrally with the disk reproducing means and a vertical hole provided in a side plate of the apparatus main body so that the protrusion can be inserted therethrough. .   The ascending restriction member has an elongated hole in the vertical direction, a protruding member attached to a side plate of the apparatus main body with a screw passing through the elongated hole, and the protruding member and the apparatus so as to urge the protruding member downward 2. The disk device according to claim 1, comprising an elastic member provided between side plates of the main body.

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