JP4185244B2 - Disc player - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a disc playback apparatus for playing back a disc such as a DVD-RW (DVD Re-recordable) or a CD-RW.
[0002]
[Prior art]
A disc recording / reproducing apparatus for recording / reproducing a disc such as a DVD-RW uses a resin-molded tray when the disc is placed on a turntable in the apparatus. The disc recording / reproducing apparatus transports a disc placed on a tray to a turntable that is driven to rotate by a spindle motor, and places the disc on the turntable. When the disk recording / reproducing apparatus detects that the disk is placed on the turntable, the disk recording / reproducing apparatus rotates the turntable at a high speed and performs tracking control so that the information reading light beam follows the information track on the disk. At the same time, focus control is performed so that the beam spot is accurately formed on the information track, and information is recorded and reproduced reliably.
[0003]
The tray of the disk recording / reproducing apparatus is configured to be movable between an attachment / detachment position for attaching / detaching the disk and a storage position for storing the disk in the apparatus through an opening formed in the apparatus front panel. In recent years, high-density recording / reproduction of discs has progressed in disc recording / reproducing apparatuses. Along with this, problems such as wind noise generated by high-speed rotation of the disk leaking out from the gap between the front panel and the tray have newly occurred.
[0004]
In order to solve this problem, Japanese Utility Model Publication No. 3-61691 proposes a method for preventing wind noise generated by high-speed rotation of a disk. According to Japanese Utility Model Laid-Open No. 3-61691, the disc recording / reproducing apparatus 1 is provided with an opening 3 in the front panel 2 as shown in FIG. 10, and the disc is attached to and detached from the tray 4 through the opening 3. The disk is supported so as to be movable between a detachable position and a storage position (shown position) where the disk is stored in the apparatus. The disc recording / reproducing apparatus 1 has a tray panel 5 on the front surface of the tray 4. The tray panel 5 includes a protruding portion 6 on the back side thereof, and the protruding portion 6 is inserted into an insertion hole 8 provided in the tray 4 and attached with a spring 7 so that the tray panel 5 is attached in a direction approaching the tray 4. It is energized.
[0005]
When the tray 4 of the disc recording / reproducing apparatus 1 is located at the attachment / detachment position, the tray 4 is disposed in close contact with the tray panel 5 by the spring 7. When the tray 4 is located at the storage position, the tray panel 5 and the front panel 2 contact each other. Thus, it is supported in a state separated from the tray panel 5. Therefore, the disc recording / reproducing apparatus 1 can close the opening 3 of the front panel 2 with the tray panel 5 and prevent the noise caused by the wind noise of the disc generated inside the apparatus from leaking out from the opening 3. .
[0006]
[Problems to be solved by the invention]
On the other hand, in the disk recording / reproducing apparatus, it is very important to take vibration measures to prevent the tracking loss due to an externally applied impact. However, in the disk recording / reproducing apparatus 1 described above, the protruding portion 6 of the tray panel 5 is always in contact with the insertion hole 8 formed in the tray 4. Therefore, when an impact is applied to the tray panel 5 from the outside when the tray 4 is in the stowed position, the vibration is directly transmitted to the tray 4 through the protruding portion 6, and is transmitted to the disk and the optical head. There was a problem that caused untracking.
[0007]
The present invention has been made in view of the above problems, and prevents noise such as wind noise generated by high-speed rotation of the disk, and also applies the impact to the disk or optical head even when an external impact is applied to the tray panel. It is an object of the present invention to provide a disc reproducing apparatus configured so as not to be transmitted.
[0008]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, a disc reproducing apparatus according to the invention described in claim 1 is provided with an attaching / detaching position for attaching / detaching a disc and an accommodating position for accommodating the disc in the device through an opening formed in the device front panel. In a disk reproducing apparatus having a disk reproducing mechanism for movably supporting the tray between and reproducing the disk, elastic support means for elastically supporting the disk reproducing mechanism with respect to the apparatus, and being able to contact with and separate from the front surface of the tray A tray panel to be arranged, a biasing means for biasing the tray panel in a direction close to the front surface of the tray, and a first positioning means for positioning the tray panel with respect to the tray when the tray is in the attachment / detachment position; When the tray is brought into the storage position, the positioning by the first positioning means is released against the biasing means, and the tray panel is B and the second positioning means for positioning a position not in contact has a second positioning means includes an inclined surface formed on the edge of the opening, the tray panels to engage the inclined surface It is the inclined surface formed in the back surface edge part .
[0009]
According to a second aspect of the present invention, there is provided a disk reproducing apparatus according to the first aspect, wherein the disk reproducing apparatus has a detachable tray holder on the front surface of the tray, and the urging means includes the tray holder, the tray panel, When the tray holder is mounted on the tray, the tray panel is urged in the direction approaching the front surface of the tray. Further, the first positioning means is characterized in that a convex part having an inclined surface formed on the front side of the tray holder and a concave part having an inclined surface formed on the rear side of the tray panel are characterized.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Next, the disc recording / reproducing apparatus 100 according to the first embodiment of the present invention will be described with reference to the drawings. In this embodiment, a disc recording / reproducing apparatus 100 for recording / reproducing a recordable disc 10 such as a DVD-RW or a CD-RW will be described. However, the present embodiment is recorded on a disc such as a DVD-Video or a CD-DA. The present invention can also be applied to a disk playback device that plays back information. The overall configuration of the disk recording / reproducing apparatus 100 will be described below with reference to FIGS. 1 is an exploded perspective view showing the entire disc recording / reproducing apparatus 100, and FIG. 2 is a side view of the main part of the disc recording / reproducing apparatus 100.
[0013]
The disc recording / reproducing apparatus 100 stores the disc 10 in the apparatus and carries out a transport operation for taking out the disc 10 from the apparatus by the tray 40. The disc recording / reproducing apparatus 100 is a disc recording / reproducing mechanism 12 composed of an optical component for recording / reproducing information with respect to the disc 10, a rotating mechanism for rotating the disc 10, and carrying in / out the tray 40. Is provided in the apparatus 11. The disc recording / reproducing mechanism 12 includes a turntable, an optical head, a clamper, a tray, a tray driving mechanism, and the like, and is elastically supported on the chassis 11 by four dampers 13 serving as elastic supporting means. In the drawing, the two dampers 13 on the left side of the apparatus are hidden and cannot be seen.
[0014]
In the disc recording / reproducing apparatus 100, an opening 51 for carrying in and out the tray 40 is provided on the front panel 50, and an inclined surface 52 described later is provided on the inner peripheral edge of the opening 51. The tray 40 of the disk recording / reproducing apparatus 100 has a tray panel 20 and a tray holder 30 detachably disposed on the front surface thereof, and an attachment / detachment position for attaching / detaching the disk 10 and an opening of the disk 10 into the apparatus via the opening 51 of the front panel 50. The disc recording / reproducing mechanism 12 is supported so as to move between the storing positions. The tray panel 20 of the disc recording / reproducing apparatus 100 is disposed so as to cover the opening 51 of the front panel 50 when the tray 40 is in the storage position, and is supported in a state of being separated from the tray 40 including the tray holder 30. It is configured.
[0015]
When the tray 40 is in the storage position so that the impact is not transmitted to the disc recording / reproducing mechanism 12 through the tray 40 even when an external impact is applied to the tray panel 20, the disc recording / reproducing apparatus 100 is in the tray panel 20. Are supported in a state of being separated from the tray 40. Hereinafter, these structures will be described in detail with reference to FIGS.
[0016]
3 is a top view showing the positional relationship between the tray panel 20 and the tray holder 30 disposed on the front surface of the tray 40 at the attachment / detachment position, FIG. 4 is an exploded perspective view of the main part, and FIG. FIG. 3 is a top view of the disc recording / reproducing apparatus 100 when in a position.
[0017]
As shown in FIGS. 3 and 4, the tray panel 20 has a recess 21 and a holding plate 22 formed on the back side thereof. The recess 21 is formed with an inclined surface 21a (see FIG. 7) that is recessed in a mortar shape, and serves as one of first positioning means for the tray holder 30 described later. On the other hand, the holding plate 22 is a plate-like protruding plate having a rectangular hole 23 formed in the center, and a projection 24 that holds a spring 26 described later is formed inside the rectangular hole 23 facing the back surface of the tray panel 20. Yes. In addition, the tray panel 20 has an inclined surface 25 that engages with an inclined surface 52 of an opening 51 formed in the front panel 50 at the rear edge that is an edge on the rear surface side. Together with the inclined surface 52, it serves as a second positioning means.
[0018]
Next, the tray holder 30 is provided with a conical convex portion 31 formed with an inclined surface 31 a that engages with the concave portion 21 of the tray panel 20 on the front side thereof, and the other of the first positioning means with respect to the tray panel 20 is provided. I'm in charge. Further, the tray holder 30 is provided with an insertion hole 32 through which the holding plate 22 of the tray panel 20 passes. In addition, the tray holder 30 has an annular projecting wall 33 that holds the spring 26 on the back side where the insertion hole 32 is provided. The annular projecting wall 33 is formed in a pair of fan shapes by removing the center in order to penetrate the holding plate 22 of the tray panel 20.
[0019]
Further, the tray holder 30 is formed with a fixing plate 34 for fixing to a tray 40 described later on the back side. The fixing plate 34 has a U-shaped notch on the inner side, thereby forming a lock arm 35 at the center thereof, and an inclined surface 36 (FIG. 4) is formed on the lower surface of the distal end of the lock arm 35. .
[0020]
On the other hand, the tray 40 has an opening 41 and a fixing hole 42 formed on the front surface thereof. The opening 41 is formed at a position facing the holding plate 22 of the tray panel 20 and is larger than the outer shape of the holding plate 22 and the spring 26. The fixing hole 42 of the tray 40 is formed at a position facing the fixing plate 34 of the tray holder 30, and an escape groove 43 is provided at the center thereof so that elastic deformation upward of the lock arm 35 can be inserted. .
[0021]
Next, an assembly procedure of the tray panel 20 and the tray holder 30 and a mounting procedure on the tray 40 will be described.
[0022]
First, the holding plate 22 of the tray panel 20 is inserted into the insertion hole 32 of the tray holder 30. Then, the convex portion 31 of the tray holder 30 is inserted into the concave portion 21 formed in the tray panel 20, and the holding plate 22 is inserted into the tray panel 20 by the contact between the inclined surface 21 a and the inclined surface 31 a of the convex portion 31. It is positioned at a position where it does not engage with the hole 32. In this state, the spring 26 is inserted between the protrusion 24 of the holding plate 22 and the annular projecting wall 33 to integrate the tray panel 20 and the tray holder 30 together.
[0023]
Subsequently, the holding plate 22 to which the spring 26 is attached is inserted into the opening 41 of the tray 40, and the fixing plate 34 is inserted into the fixing hole 42 of the tray 40, and the tray holder 30 that biases and supports the tray panel 20 is installed. Mount on the front of the tray 40.
[0024]
As described above, the tray 40 has the tray panel 20 and the tray holder 30 mounted on the front surface thereof, and the attachment / detachment position where the disk 10 is attached / detached via the opening 51 of the front panel 50, and the disk 10 is stored in the apparatus. It is supported so as to be movable between the storage positions.
[0025]
FIG. 5 is a cross-sectional view of the main part showing the positional relationship between the tray panel 20, the tray holder 30, and the tray 40 when in the detaching position. 6 is a cross-sectional view taken along line AA in FIG. As shown in FIGS. 5 and 6, when the tray panel 20 is in the attachment / detachment position, the spring mounted between the protrusion 24 formed on the holding plate 22 and the annular projecting wall 33 formed on the tray holder 30. 26, the urging force in the direction indicated by the arrow in FIG.
[0026]
Next, a state where the tray 40 is in the storage position will be described with reference to FIGS. 8 is a cross-sectional view taken along line AA in FIG.
[0027]
When the disc 10 is loaded by the user and, for example, a “PLAY” button (not shown) is pressed by the user, the disc recording / reproducing device 100 is moved from the above-mentioned mounting position by the tray driving mechanism on the disc recording / reproducing mechanism 12. Transfer to the storage position inside. In the process of transferring the tray 40 to this position, first, the inclined surface 25 of the tray panel 20 is engaged with the inclined surface 52 of the front panel 50. Therefore, the tray panel 20 is accurately positioned at a position where the holding plate 22 is not engaged with the insertion hole 32 by the inclined surface 25 of the tray panel 20 and the inclined surface 52 of the front panel 50 as second positioning means. The
[0028]
As described above, the tray 40 is fixed to the tray holder 30 by the lock arm 35. The tray panel 20 is urged and supported by the spring 26 with respect to the tray holder 30. Therefore, when the tray 40 moves further to the inside of the apparatus than the position where the inclined surface 25 of the tray panel 20 and the inclined surface 52 of the front panel 50 are engaged and brought to the storage position, the convex portion of the tray holder 30 is formed. The positioning of the tray panel 20 by 31 is released, and the tray panel 20 is brought into a non-contact state.
[0029]
As described above, according to the disk recording / reproducing apparatus 100 of the present embodiment, when the tray 40 is in the storage position, that is, when the information recording operation or the information reproducing operation is performed on the disk 10, On the other hand, since the tray panel 20 is held in a non-contact state, even when an impact is applied to the tray panel 20 from the outside, the impact is not transmitted to the disc recording / reproducing mechanism 12 via the tray 40.
[0030]
Further, the disk recording / reproducing apparatus 100 elastically supports the disk recording / reproducing mechanism 12 including the tray 40 driving mechanism with respect to the chassis 11 by the damper 13 which is an elastic supporting means. Even in such a case, no shock is transmitted to the disk recording / reproducing mechanism 12. Therefore, the disc recording / reproducing apparatus 100 of this embodiment can record and reproduce information stably.
[0031]
Further, when the tray 40 is in the storage position, the disc recording / reproducing apparatus 100 has an inclined surface 25 formed on the rear edge of the tray panel 20 and an inclined surface formed on the inner peripheral edge of the opening 51 of the front panel 50. Since the 52 is arranged in close contact, noise such as wind noise generated when the disk 10 is rotated at high speed is not leaked to the outside through the insertion hole 32.
[0032]
Next, a disc recording / reproducing apparatus 110 according to the second embodiment of the present invention will be described with reference to FIG. The difference between the second embodiment and the first embodiment is the difference in the mounting structure of the springs 28, and the other points are the same as in the first embodiment. The disc recording / reproducing apparatus 110 forms an L-shaped holding member 27 on the back side of the tray panel 20 in place of the holding plate 22, and newly forms an L-shaped holding member 37 on the back side of the tray holder 30. A spring 28 is disposed between the holding member 27 and the holding member 37. With this configuration, the tray panel 20 of the disk recording / reproducing device 110 can exert the same urging force as pulling toward the tray holder 30 and can exhibit the same effect as the spring 26 of the first embodiment.
[0033]
【The invention's effect】
According to the present invention, noise such as wind noise generated by high-speed rotation of a disc is prevented, and even when an impact is applied to the tray panel from the outside, the impact is transmitted to the disc and the optical head via the tray. Can be prevented.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view of a disc recording / reproducing apparatus 100 according to a first embodiment of the present invention.
FIG. 2 is a side view of the main part of the disc recording / reproducing apparatus 100. FIG.
3 is a diagram showing a positional relationship between the tray panel 20 and the tray holder 30 with respect to the tray 40. FIG.
4 is a developed perspective view of the tray panel 20 and the tray holder 30. FIG.
FIG. 5 is a cross-sectional view of the main part showing the positional relationship between the tray panel 20, the tray holder 30, and the tray 40 when the tray 40 is in the attachment / detachment position.
6 is a cross-sectional view taken along line AA in FIG.
7 is a cross-sectional view of the main part showing the positional relationship between the tray panel 20, the tray holder 30, and the tray 40 when the tray 40 is in the storage position. FIG.
8 is a cross-sectional view taken along line AA in FIG.
FIG. 9 is a cross-sectional view of a main part of a disc recording / reproducing apparatus 110 according to a second embodiment.
FIG. 10 is a cross-sectional view of main parts of a disk recording / reproducing apparatus 1 in a conventional example.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 ... Disk 11 ... Chassis 12 ... Disk recording / reproducing mechanism 13 ... Damper 20 ... Tray panel 21 ... Recessed part (1st positioning means)
25 ... Inclined surface (second positioning means)
26, 28 ... Spring (biasing means)
27, 37 .. Holding member 30 ... Tray holder 31 ... Projection (first positioning means)
36 ... inclined surface 40 ... tray 43 ... escape groove 50 ... front panel 51 ... opening 52 ... inclined surface (second positioning means)
100, 110... Disk recording / reproducing apparatus

Claims (2)

There is provided a disc playback mechanism for supporting the tray in a movable manner between an attachment / detachment position for attaching and detaching the disc and an accommodation position for accommodating the disc in the device and reproducing the disc through an opening formed in the apparatus front panel. In a disc player,
Elastic support means for elastically supporting the disk reproduction mechanism with respect to the device;
A tray panel that is detachably disposed on the front surface of the tray;
Urging means for urging the tray panel in a direction approaching the front surface of the tray;
First positioning means for positioning the tray panel with respect to the tray when the tray is in the attachment / detachment position;
When the tray is brought to the storage position, the positioning by the first positioning means is released against the biasing means, and the tray panel is positioned at a position where it is not in contact with the tray. Two positioning means ,
The disc is characterized in that the second positioning means is an inclined surface formed at an edge of the opening and an inclined surface formed at a rear edge of the tray panel so as to be engaged with the inclined surface. Playback device. The disc player further has a detachable tray holder on the front surface of the tray,
The biasing means is disposed between the tray holder and the tray panel, and when the tray holder is attached to the tray, the tray panel is biased in a direction close to the front surface of the tray,
The first positioning means is a convex portion having an inclined surface formed on the front surface side of the tray holder and a concave portion having an inclined surface formed on the back surface side of the tray panel. 2. The disk reproducing apparatus according to 1.

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