JP2011113574A - Optical disk device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a thin optical disk device which reduces the number of components by ensuring the stability of disk transportation even when a bracket is eliminated. <P>SOLUTION: The optical disk device is equipped with: a body having a mechanism for reading data of an optical disk by rotationally driving the optical disk; a disk guide arranged above an optical disk slot of the body to guide the optical disk; transportation rollers arranged below the disk guide to transport the optical disk by holding the optical disk together with the disk guide and pressing it on the disk guide; and an arm section having a disk guide retainer prepared on a supporting shaft so as to be located higher than the supporting shaft and disk guide extending in the direction to close the slot, and moving the supporting shaft when the optical disk is inserted or ejected. An arm guide unit extending along the moving direction of the arm section is provided in the disk guide for guiding the arm section. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an optical disc apparatus.

  Conventionally, an optical disc apparatus has been widely used for recording and reproduction of video signals and audio signals (see, for example, Patent Document 1). 14 and 15 are explanatory views showing a schematic configuration of a conventional optical disc apparatus, FIG. 14 is a top view (part) of the optical disc apparatus, and FIG. 15 is a front view of the optical disc apparatus. As shown in FIGS. 14 and 15, the optical disc device 100 includes a main body 101 on which an optical disk rotation drive unit, an optical pickup device, and the like are mounted, and a bracket 102 that covers the upper portion of the main body 101.

  FIG. 16 is a top view (part) showing the main body 101 without the bracket 102 in the optical disc apparatus 100. A disc guide 103 for guiding an optical disc D (see FIG. 18) is provided on the upper portion of the main body 101.

  FIG. 17 is a top view (part) showing a state in which the disc guide 103 in the main body 101 is omitted. The main body 101 includes a conveyance roller 104 that conveys the optical disc D, a pair of detection arms 106 that open and close in the horizontal direction in accordance with the insertion / ejection of the optical disc D, and press a detection switch (not shown). An arm spring 107 is provided to bias the inward force.

  FIG. 18 is a front view showing the relationship between the disc guide 103, the transport roller 104, and the optical disc D, and FIG. 19 is a schematic diagram schematically showing these relationships. As shown in FIGS. 18 and 19, inclined portions 103 c that are inclined downward are formed on both sides of the lower surface 103 a of the disk guide 103. The ridge line 103b of the inclined portion 103c is formed so as to narrow toward the back of the main body 101 (see the dotted line in FIG. 16). As shown in FIGS. 18 and 19, the transport roller 104 is formed in a tapered shape whose outer diameter increases toward the outside. Further, since the conveying roller 104 is in contact with the optical disk D, an upward biasing force is applied by a crimp spring (not shown) (see arrow P0 in FIG. 18). The conveying roller 104 presses the optical disk D against the disk guide 103 by the biasing force of the pressure spring, and the optical disk D is conveyed by the frictional force of the conveying roller 104. Here, practically, if dust such as dust or dust adheres to the conveyance roller 104, the frictional force is reduced. Therefore, the biasing force of the crimp spring is set high in consideration of this reduction. .

20 is a front view (part) showing a state in which the optical disc D is in contact with the outside of the disc guide 103. FIG. 21 is a front view showing a state in which the optical disc D is in contact with the central portion of the disc guide 103. It is. In FIG. 21, a state immediately after the optical disc D is inserted or immediately before the completion of ejection is indicated by a dotted line.
As shown in FIG. 20, when the detection arm 106 is most open and the optical disk D of the disk guide 103 is in contact with the outside in the left-right direction in the figure, the urging force by the crimping spring acts on the contact portion P1. As shown in FIG. 21, when the detection arm 106 is slightly opened and the optical disc D is in contact with the central portion of the disc guide 103, the urging force of the pressure spring acts on the contact portion P2. In any case, since the upward biasing force is applied to the disk guide 103 via the optical disk D, the disk guide 103 is bent so as to be convex upward. In particular, when the optical disk D is in contact with the center portion of the disk guide 103, the moment increases and the deformation amount also increases.

If the disc guide 103 bends, the height of the disc guide 103 changes, which causes interference between other components and the optical disc D, loss of the biasing force of the crimp spring, and the like. There is a risk of poor transport.
In order to prevent such deformation of the disc guide 103, a bracket 102 is conventionally stacked on the upper portion of the disc guide 103.

JP 2004-22040 A

By the way, reduction of the number of parts and thickness reduction are desired also in the optical disc apparatus as well as other electronic devices.
Therefore, an object of the present invention is to secure the stability of disk conveyance even if the number of brackets is reduced, and to reduce the number of parts and reduce the thickness.

In order to solve the above problem, an optical disc apparatus according to the invention described in claim 1
A main body having a mechanism for rotating the optical disc and reading data of the optical disc;
A disk guide for guiding the optical disk, which is disposed above the insertion slot of the optical disk in the main body;
A transport roller disposed below the disk guide, sandwiching the optical disk together with the disk guide, and pressing and transporting the optical disk against the disk guide;
A support shaft extending in a direction to block the insertion slot; and a disk guide press provided on the support shaft so as to be positioned above the disk guide. The disc guide includes an arm guide portion that extends along a moving direction of the arm portion to guide the arm portion.

According to a second aspect of the present invention, there is provided the optical disc apparatus according to the first aspect,
The arm guide portion is a long hole along the moving direction,
The support shaft is inserted into the elongated hole.

The invention according to claim 3 is the optical disc apparatus according to claim 1 or 2,
The arm guide portion is characterized in that the height of the central portion of the insertion port is formed higher than the outer portion of the insertion port.

  According to the present invention, even if the number of brackets is reduced, the stability of disk conveyance can be ensured, and the number of parts can be reduced and the thickness can be reduced.

1 is a top view (part) illustrating a schematic configuration of an optical disc apparatus according to an embodiment. FIG. 2 is a front view showing a schematic configuration of the optical disc apparatus of FIG. 1. FIG. 2 is a bottom view (part) illustrating a schematic configuration of the optical disc apparatus of FIG. 1. FIG. 2 is a front view schematically showing a relationship between a disc guide and a transport roller provided in the optical disc apparatus of FIG. 1. FIG. 5 is a side view schematically showing a relationship among the disk guide, the conveyance roller, and the optical disk in FIG. 4. FIG. 6 is a side view schematically showing a state where the disk guide and the transport roller of FIG. 5 are transporting an optical disk. FIG. 2 is a front view illustrating a schematic configuration of a pair of arm units provided in the optical disc apparatus of FIG. 1. FIG. 2 is a front view showing a part of the optical disc apparatus in a state where the optical disc is in contact with a central portion of a disc guide provided in the optical disc apparatus of FIG. 1. FIG. 2 is a front view showing a part of the optical disc apparatus in a state where the optical disc is in contact with the outside of a disc guide provided in the optical disc apparatus of FIG. 1. It is a perspective view which shows the 1st modification of the arm part of FIG. It is a perspective view which shows the 2nd modification of the arm part of FIG. It is a perspective view which shows the modification of the arm guide part with which the disc guide of FIG. 1 is equipped. It is a front view which shows the modification of the disc guide of FIG. It is a top view (part) which shows schematic structure of the conventional optical disk apparatus. It is a front view which shows schematic structure of the optical disk apparatus of FIG. FIG. 15 is a top view (part) illustrating a schematic configuration of a main body portion with a bracket omitted from the optical disk device of FIG. 14. FIG. 17 is a top view (part) showing a state where the disc guide is omitted from the main body of FIG. 16. It is a front view which shows the relationship between the disc guide with which the optical disk apparatus of FIG. 14 is equipped, a conveyance roller, and an optical disk. It is a schematic diagram which shows typically the relationship of FIG. FIG. 15 is a front view (a part) illustrating a state in which the optical disc is in contact with the outside of the disc guide in the optical disc apparatus of FIG. FIG. 15 is a front view showing a state where an optical disc is in contact with a central portion of a disc guide in the optical disc apparatus of FIG. 14.

  The best mode for carrying out the present invention will be described below with reference to the drawings. However, although various technically preferable limitations for implementing the present invention are given to the embodiments described below, the scope of the invention is not limited to the following embodiments and illustrated examples.

  1 to 3 are explanatory views showing a schematic configuration of the optical disc apparatus of the present embodiment. As shown in FIGS. 1 to 3, the optical disc apparatus 1 is provided with a rotation drive unit (turn table) for rotating the optical disc D1 (see FIG. 6), an optical pickup device for reading data on the optical disc D1, and the like. A main body 2 is provided.

  In the vicinity of the insertion slot 21 of the optical disk D1 in the main body 2, the optical disk D1 is sandwiched together with the disk guide 3 for guiding the optical disk D1, and the optical disk D1 is pressed against the disk guide 3 and conveyed. A conveyance roller 4 is provided.

4 is a front view schematically showing the relationship between the disc guide 3 and the transport roller 4, and FIG. 5 schematically shows the relationship between the disc guide 3, the transport roller 4 and the optical disc D1, and FIG. FIG.
As shown in FIGS. 1, 4, and 5, inclined portions 34 that are inclined downward are formed on both sides of the lower surface 31 of the disk guide 3. The ridgeline 32 of the inclined portion 34 is formed toward the inner surface of the insertion port 21 so as to narrow toward the back of the main body portion 2. In addition, a pair of long holes 33 extending in the left-right direction is formed in the insertion slot 21 of the disc guide 3.

  The conveyance roller 4 is driven to rotate by the power from a drive motor (not shown) and a gear connected to the motor being transmitted to the shaft. The transport roller 4 extends in the left-right direction and is disposed below the disk guide 3. The conveyance roller 4 is formed of a tapered portion having an outer diameter that increases toward the shaft and the outside, and both end portions. Since the taper portion 41 is in contact with the optical disc D1, the surface thereof is covered with an elastic body such as rubber. Further, both end portions of the transport roller 4 are supported by the main body portion 2 via a crimp spring 5. The pressure spring 5 applies a biasing force (arrow Y in FIG. 5) to the transport roller 4 so that the transport roller 4 presses the disk guide 3. As shown in FIG. 6, even when the optical disk D <b> 1 is transported, the transport roller 4 presses the optical disk D <b> 1 against the disk guide 3 by the urging force of the pressure spring 5.

  If the optical disk D1 is immediately after being inserted into the insertion slot 21, the optical disk D1 is sandwiched near the center of the transport roller 4 and the disk guide 3 as shown in FIG. 4 (dotted line D1 in FIG. 4). reference). Thereafter, as the conveyance proceeds, the clamping position B1 gradually moves outward. That is, the clamping position B1 at which the urging force of the crimping spring 5 acts on the disc guide 3 is a central portion immediately after insertion, and moves outward as the conveyance proceeds.

  As shown in FIGS. 1 to 3, a pair of arm portions 6 that move in the left-right direction as the optical disc D <b> 1 is inserted or ejected are provided in the vicinity of the insertion port 21 in the main body portion 2.

  FIG. 7 is a front view showing a schematic configuration of the pair of arm portions 6. As shown in FIG. 7, the arm portion 6 includes a plate-like portion 61 and a support shaft 62 that extends in the vertical direction and supports the plate-like portion 61 at the lower end. The pair of arm portions 6 are given urging forces toward the inside by arm springs (not shown).

The plate-like portion 61 is a substantially plate-like member extending in the left-right direction, and a support shaft 62 is attached to the upper part of the outer end portion. The support shaft 62 extends in a direction that blocks the insertion port 21, and is inserted into the elongated hole 33 so that the upper end portion thereof is slidable. Further, a part of the support shaft 62 is in contact with the outer peripheral surface of the optical disc D1 at a portion directly below the disc guide 3. Accordingly, when the optical disc D1 is inserted and the support shaft 62 is pushed by the outer peripheral surface of the optical disc D1, the support shaft 62 slides along the long hole 33. That is, the elongated hole 33 is an arm guide portion that extends along the opening / closing direction (left-right direction) of the arm portion 6 in order to guide the arm portion 6.
A disc-shaped disc guide presser 621 having an outer diameter larger than the width of the long hole 33 is formed at the upper end portion of the support shaft 62. As a result, the disk guide presser 621 extends laterally along the direction orthogonal to the axial direction of the support shaft 62 and faces the upper surface of the disk guide 3, so that the disk guide 3 floats. To prevent.

  As shown in FIG. 3, the main body 2 is provided with a switch 7 for driving a drive motor on an opening / closing track of one arm 6. When one arm portion 6 slides by a predetermined length, this switch 7 is pushed to drive the drive roller.

Next, the operation of this embodiment will be described.
First, when the optical disc D1 is inserted into the insertion port 21 of the main body 2 by the user, the pair of arm portions 6 are pushed outward by the optical disc D1 and slide. When the pair of arm portions 6 move by a predetermined length and press the switch 7, the drive motor is driven and the transport roller 4 is rotationally driven. With this rotational drive, the optical disk D1 is transported toward the back of the main body 2 while being sandwiched between the transport roller 4 and the disk guide 3. Here, “the back of the main body 2” is the side where the rotation driving unit of the main body 2 is disposed as viewed from the insertion port 21. At the time of conveyance, since the urging force by the pressure spring 5 is applied to the conveyance roller 4, the conveyance roller 4 conveys the optical disk D 1 while pressing it against the disk guide 3.

8 is a front view showing a part of the optical disc apparatus 1 in a state where the optical disc D1 is in contact with the central portion of the disc guide 3. FIG. 9 is a state where the optical disc D1 is in contact with the outside of the disc guide 3. It is a front view which shows a part of optical disk apparatus 1 in FIG.
As shown in FIG. 8, when the optical disc D1 is in contact with the center portion of the disc guide 3, the urging force of the crimp spring 5 acts on the contact portion P3. For this reason, the disc guide 3 is acted on by a moment to bend upwardly, but its deformation is restricted by the disc guide presser 621.
On the other hand, when the optical disc D1 is in contact with the outside of the disc guide 3 as shown in FIG. 9, the urging force of the crimp spring 5 acts on the contact portion P4. In this case, although it is smaller than the case where the optical disc D1 is in contact with the central portion, a moment that bends the disc guide 3 upwardly acts. In this case, the deformation of the disk guide 3 is restricted by the disk guide presser 621. By these things, the deformation | transformation of the disk guide 3 is suppressed.

As described above, according to the optical disc apparatus 1 of the present embodiment, the disc guide presser 621 exists above the disc guide 3 and is disposed so as to face the upper surface of the disc guide 3. Deformation in which the disc guide 3 is convex upward can be restricted by the disc guide presser 621. In this way, if the deformation of the disk guide 3 is suppressed, it is possible to prevent interference between other components and the optical disk D1 due to a change in the height of the disk guide 3, loss of the urging force of the crimping spring 5, and the like. In addition, the conveyance of the optical disk D1 can be stabilized.
As described above, in the optical disk device 1 according to the present embodiment, even if the brackets that have been conventionally required are reduced, it is possible to secure the stability of disk conveyance, and to reduce the number of parts and reduce the thickness. .

  Further, since the disc guide presser 621 is slidably engaged with the long hole 33, the disc guide 3 can follow the movement of the point of application of the urging force by the crimping spring 5, and the deformation of the disc guide 3 is effective. Can be regulated.

  And the arm guide part which guides an arm part is the long hole 33, Since the support shaft 62 of the arm part 6 is penetrated by the long hole 33, the support shaft 62 will detach | leave from an arm guide part. Can be prevented.

  Note that the present invention is not limited to the above embodiment, and can be modified as appropriate. In the following description, the same parts as those in the above embodiment are denoted by the same reference numerals and the description thereof is omitted.

  For example, in the present embodiment, the case where the disk guide presser 621 has a disk shape has been described as an example, but any shape may be used as long as the disk guide 3 can be prevented from floating. For example, as shown in the arm portion 6A shown in FIG. 10, as shown in FIG. 11, the disc guide presser 621a extending only one side from the support shaft 62a so as to face the upper surface of the disc guide 3, or the arm portion 6B shown in FIG. Examples thereof include a disk guide presser 621b that extends linearly in two directions around the support shaft 62b so as to face the upper surface of the disk guide 3.

  Further, in the present embodiment, the case where the arm guide portion is the long hole 33 has been described as an example. However, the arm guide portion guides the arm portion 6 and thus extends along the moving direction of the arm portion 6. Any shape is possible as long as it is in shape. For example, like the disc guide 3A shown in FIG. 11, the end 35a on the insertion port 21 side extends in the moving direction, so that the end 35a can be used as an arm guide. In this case, a mold or the like for molding the disc guide 3 can be simplified compared to the disc guide 3 having the long holes 33.

  Further, it is also preferable to form a tapered surface 38c that gradually increases from the outside toward the inside with respect to the portion of the pair of arm portions 6 where the disk guide presser 621 abuts, like the disk guide 3C shown in FIG. . Thus, the arm guide portion of the disc guide 3C is formed such that the height of the central portion of the insertion port 21 is higher than the outer portion of the insertion port 21. As described above, since both ends of the transport roller 4 are supported by the main body 2 via the crimping spring 5, when the optical disc D1 is in contact with the outside of the disc guide 3C (see FIG. 9), The moment acting on the disc guide 3C is reduced. Therefore, the force for suppressing the deformation of the disk guide 3C may be small. On the other hand, when the optical disc D1 is in contact with the central portion of the disc guide 3C (see FIG. 8), since the moment acting on the disc guide 3C is large, it is desirable to increase the force for suppressing the deformation of the disc guide 3C. It is. That is, when the taper surface 38c is formed in the part where the disk guide presser 621 contacts the pair of arm parts 6 as in the disk guide 3C shown in FIG. 12, the pair of arm parts 6 are located in the center part. In this case, the disk guide presser 621 presses a high portion of the tapered surface 38c, and the center portion of the disk guide 3C is bent downward. By this deformation, the urging force by the crimp spring 5 can be increased, and the conveyance stability can be further increased. Note that when the center portion of the disk guide 3C is bent downward, the angle of the ridge line 32 falls, but in this state, the optical disk D1 is not in contact with the outside of the disk guide 3C. Therefore, it does not become a problem on conveyance.

  Further, if the arm portion 6 floats as the disk guide 3 is deformed, the restriction on the disk guide 3 may be weakened. For this reason, it is preferable to provide a regulating mechanism that regulates the lifting of the arm 6 from the main body 2 within a range that does not hinder the sliding in the moving direction with respect to the arm 6.

DESCRIPTION OF SYMBOLS 1 Optical disk apparatus 2 Main-body part 3 Disc guide 4 Conveyance roller 5 Crimp spring 6 Arm part 7 Switch 21 Insertion port 31 Recess 32 Ridge line 33 Slot (arm guide part)
61 Plate-like part 62 Support shaft 621 Disc guide holder D1 Optical disc

Claims (3)

A main body having a mechanism for rotating the optical disc and reading data of the optical disc;
A disk guide for guiding the optical disk, which is disposed above the insertion slot of the optical disk in the main body;
A transport roller disposed below the disk guide, sandwiching the optical disk together with the disk guide, and pressing and transporting the optical disk against the disk guide;
A support shaft extending in a direction to block the insertion slot; and a disk guide press provided on the support shaft so as to be positioned above the disk guide. An optical disc apparatus, comprising: an arm guide portion that extends along a moving direction of the arm portion to guide the arm portion. The optical disc apparatus according to claim 1,
The arm guide portion is a long hole along the moving direction,
The optical disc apparatus, wherein the support shaft is inserted into the elongated hole. The optical disk apparatus according to claim 1 or 2,
The optical disk reproducing apparatus according to claim 1, wherein the arm guide portion is formed such that a height of a central portion of the insertion slot is higher than that of the outer part of the insertion slot.

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