JP2000339950A - Optical disk unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain an optical disk unit which prevents a flexible board from being sandwiched when a disk tray advances into a unit enclosure and in which a loading action can be performed safely and surely. SOLUTION: A wiper member 12 which is installed at a disk tray 3 so as to be displaceable is interlocked with the retreat action of the disk tray 3 when the disk tray 3 is retreated from a unit enclosure 2, it levels the surface of a flexible board 7 which connects the disk tray 3 to a control circuit board 6, and it prevents the flexible board 7 from being loosened. A guide member 13 which is arranged and installed on the course of the wiper member 12 mechanically guides the wiper member 12 so as to match the advance and retreat action of the disk tray 3. Thereby, the disk tray 3 can be guided smoothly to a disk driving position, and the flexible board 7 can be protected.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wiper member which acts on a flexible board which electrically connects a disk tray side and an apparatus housing side when the disk tray is moved forward and backward with respect to the apparatus housing, and the flexible board runs or bites. The present invention relates to an optical disk device that prevents the recording from being performed.

[0002]

2. Description of the Related Art CD-ROM, CD-R / RW or D-ROM
An optical disk device for reproducing or recording a disk state recording medium of an optical disk such as a VD-ROM or a DVD-RAM needs to improve space efficiency in consideration of being incorporated in a portable personal computer or the like. Is being developed. FIG. 4 is a perspective view showing an example of a conventional optical disk device as viewed from the bottom side. The optical disk device 1 shown in FIG. 1 has a flat box-shaped device housing 2 having an open front surface, and a disk tray 3 incorporated into and out of the device housing 2 to move the optical disk 4 in and out. The guide is provided between a disk mounting position and a disk drive position. A push button 5 for manually unlocking the disk tray 3 locked at the disk drive position is provided on the front surface of the disk tray 3. Further, a control circuit board 6 is provided in the apparatus housing 2, and a flexible board 7 connecting the control circuit board 6 and the disk tray 3 has a slack margin corresponding to a draw-out distance (retreat distance) of the disk tray 3. It is folded so that the parts are double overlapped.

When the push button 5 on the front of the disc tray 3 is pressed to reproduce the optical disc 4, the lock on the disc tray 3 is released, and the front edge of the disc tray 3 projects slightly forward of the apparatus housing 2. Therefore, the disc tray 3 can be pulled out by sandwiching the protruding portion between the thumb and the index finger and pulling the disc tray 3 toward the user as it is. As shown in FIG. 5, when the disk tray 3 is pulled out to the most protruding position (disk mounting position), a space for mounting the optical disk 4 is opened above the disk tray 3. FIG. 1 is a perspective view of the disk tray 3 as viewed from the bottom side. Therefore, a disk clamper for clamping the optical disk 4, an optical pickup that scans a signal recording surface of the optical disk 4 to read a recording signal, or an optical disk 4. Although a disk motor or the like for rotating the disk drive is not shown, all of these main components are integrated into the disk tray 3 in order to thoroughly reduce the size and thickness of the apparatus. For this reason, a power supply line or a control signal line for a disk motor or an optical pickup or a read signal read by the optical pickup from the optical disk 4 is transferred to the flexible substrate 7 connecting the control circuit substrate 6 and the disk tray 3. A signal line and the like are provided, and are drawn out of the apparatus housing 2 while extending in accordance with the retreat operation of the disk tray 3.

The optical disk 4 is mounted on the disk tray 3 with the center hole engaged and latched by a disk clamper. Thereafter, when the disk tray 3 is pushed into the inside of the apparatus housing 2 while pushing the front edge of the disk tray 3 with a fingertip, the optical disk 4 reaches the disk drive position in the apparatus housing 2. In this example, rail guides 8 are formed on the left and right inner side surfaces of the apparatus housing 2 in order to transport and guide the optical disk 4 from the disk mounting position to the disk driving position in the apparatus housing 2. The guide rail 9 is guided so that both side edges of the disc tray 3 are engaged and guided. The guide rail 9
The disk tray 3 itself moves in and out of the apparatus housing 2 in conjunction with the disk tray 3, and its moving distance is set to about half of the transport distance of the disk tray 3.

[0005]

In the above-mentioned conventional optical disk apparatus 1, the disk tray 3 is pulled out from the disk driving position to the disk mounting position, and the optical disk 4 is clamped on the disk tray 3 to move the disk from the disk mounting position to the disk driving position. When pushed in, the flexible substrate 7 is bent back while being double-folded in accordance with the approach operation of the disk tray 3 and accommodated in the apparatus housing 2. Therefore, when the disk tray 3 is pulled out of the apparatus housing 2, For example, the frictional force received from the inner wall of the ceiling of the device housing 2 may be damaged, and the flexible substrate 7 may be slightly loosened outside the device housing 2 as shown in FIG. However, since the state of the flexible substrate 7 cannot be seen from above the disk tray 3, even if the flexible substrate 7 is loosened and the disk tray 3 is slightly violently pushed, the flexible substrate 7 As shown in FIG. 7, the wire may not be bent properly inside the housing 2, may be caught by the opening of the device housing 2, and form a slack on the front side thereof, and may protrude outside the opening. In such a case, it is physically impossible to move the disk tray 3 to the regular disk drive position, and most users do not notice such a problem, so that the disk tray 3 is forcibly removed while the flexible substrate 7 is caught. There is a problem that the flexible substrate 7 may be damaged due to an attempt to be accommodated.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to prevent a flexible substrate from being pinched when a disk tray enters a device housing, and to assure a safe and reliable loading operation. is there.

[0007]

To achieve the above object, the present invention provides a box-shaped device housing having a disk drive space having an open front surface and a control circuit board disposed in the disk drive space. And a disk tray supported so as to be able to enter and retreat from the device housing through the opening, and transporting the optical disk between a disk mounting position and a disk drive position; and a double-folded bending in the device housing. A flexible substrate that is housed so as to be extendable and contractable and connects the disk tray and the control circuit board, and is displaceably provided on the disk tray, and is displaced in conjunction with the withdrawal operation when the disk tray withdraws from the device housing; And a wiper member for leveling the surface of the flexible substrate together with the displacement.

The present invention further comprises a guide member disposed on the path of the wiper member and mechanically guiding the wiper member in accordance with the approach and retreat operations of the disk tray. It is.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a perspective view showing one embodiment of the optical disk device of the present invention viewed from the bottom side, and FIG.
Is a cross-sectional view of the wiper member shown in FIG. 1, and FIG.
FIG. 7 is a bottom view for explaining the operation of the wiper member shown in FIG.

In an optical disk device 11 shown in FIG. 1, a wiper member 12 for leveling the bottom surface of a flexible substrate 7 and preventing it from protruding is provided on a disk tray 3 and a guide member is provided on the path of the wiper member 12. 13
Is arranged, and the wiper member 12 is mechanically guided in accordance with the approaching and retreating operation of the disc tray 3. The wiper member 12 shown in the present embodiment has a short arm 12
a and the long arm 12b are integrally formed at an angle of about 120 degrees with each other, and the short arm 12a and the long arm 12b are formed.
Are rotatably supported on the support shaft 14 and assembled to the disc tray 3. As shown in FIG. 2, the support shaft 14 is integrally formed with a central portion of a boss 15 planted on the lower surface of the bottom surface of the disk tray 3. A torsion spring 16 fitted around the boss 15 urges the wiper member 12 counterclockwise in FIG. The guide member 13 shown in the present embodiment is disposed along the inner side wall of the device housing 2, and the short arm portion 12 of the wiper member 12 is provided.
curved guide surface 1 for guiding the tip of a inward along the arc surface
3a.

The wiper member 12 is displaced to a position where the long arm portion 12b obliquely intersects with the flexible substrate 7 in conjunction with the withdrawal operation of the disk tray 3 when the disk tray 3 exits from the apparatus housing 2. It works to even out the surface and prevent loosening. In addition, disk tray 3
When entering the device housing 2, the long arm portion 12b is displaced to a position orthogonal to the flexible substrate 7 in conjunction with the entering operation, and functions to facilitate the accommodation of the flexible substrate 7 in the disk drive space. I do.

More specifically, when the disc tray 3 is withdrawn from the apparatus housing 2, the short arm 12 a of the wiper member 12 is
Is guided downward by the curved guide surface 13a of the guide member 13, and the wiper member 12 rotates counterclockwise in FIG. As a result, FIG.
The long arm portion 12b located at the position indicated by the middle dotted line is rotationally displaced so as to level the lower surface of the flexible substrate 7, thereby preventing the flexible substrate 7 from being loosened. Thus, the flexible substrate 7 extends toward the disk mounting position together with the disk tray 3 while the lower surface is leveled by the long arm portion 12b.

After the optical disk 4 is mounted at the disk mounting position and the disk tray 3 is pushed toward the disk driving position, the short arm of the wiper member 12 is adjusted according to the operation of the disk tray 3 entering the apparatus housing 2 at this time. The tip of the portion 12a is guided upward by the curved guide surface 13a of the guide member 13. That is, the wiper member 12 rotates clockwise in FIG. 3 against the urging force of the torsion spring 16. As a result, the long arm portion 12b which has been at the position shown by the solid line in FIG. 3 is rotated to the position shown by the dotted line. Thus,
The flexible substrate 7 is fed into the apparatus housing 2 with the long arm portion 12b attached from below, and is returned and stored together with the disk tray 3 to the disk drive position.

As described above, according to the optical disk device 11, when the disk tray 3 is withdrawn from the device housing 2, the wiper member 12 can press the flexible substrate 7 to prevent the flexible substrate 7 from being loosened. When the disk tray 3 is moved from the position to the disk drive position, for example, unlike the conventional optical disk device 1, the flexible substrate 7 does not turn up and protrude from the front opening of the device housing 2. . Therefore, the disc tray 3 cannot be completely accommodated in the apparatus housing, or the flexible board 7 is damaged by trying to accommodate the disc tray 3 without noticing that the flexible board 7 is protruding. In addition, it is possible to smoothly guide the disk tray 3 to the disk drive position and protect the flexible substrate 7.

Further, since the guide member 13 is provided on the path of the wiper member 12 and the wiper member 12 is mechanically guided in accordance with the movement of the disk tray 3 into and out, the wiper member 12 is driven. No special driving means is required at all, and the wiper member 12 that is displaced in accordance with the approaching and retreating operation of the disk tray 3 is moved by the guide member 1
By mechanically guiding the flexible substrate 7 according to the same displacement pattern repeatedly, the flexible substrate 7 can be safely and reliably guided into the device housing 2.

[0016]

As described above, according to the present invention,
Since the wiper member displaceably provided on the disk tray interlocks with the withdrawal operation of the disk tray when the disk tray withdraws from the apparatus housing, the surface of the flexible board connecting the disk tray and the control circuit board is leveled. The wiper member presses the flexible substrate when the disk tray exits from the apparatus housing to prevent the flexible substrate from being loosened, so that the disk tray can be moved from the disk mounting position to the disk drive position as in the conventional optical disk apparatus. In addition, the flexible board is not turned up and does not protrude from the front opening of the apparatus housing, so that the disc tray cannot be completely accommodated in the apparatus housing or the flexible board protrudes. Flexible board trying to accommodate disk tray without force Never like it may be damaged, an excellent effect such as can be protected smooth guiding the flexible board to the disk drive position of the disk tray.

Further, according to the present invention, since the guide member is provided on the path of the wiper member, and the wiper member is mechanically guided in accordance with the movement of the disk tray in and out.
There is no need for any special driving means just to drive the wiper member, and the guide member repeatedly guides the wiper member, which is displaced in accordance with the approach and retraction of the disc tray, mechanically according to the same displacement pattern. There are effects such as that the board can be guided safely and securely into the apparatus housing.

[Brief description of the drawings]

FIG. 1 is a perspective view showing one embodiment of an optical disk device of the present invention as viewed from a bottom surface side.

FIG. 2 is a sectional view of the wiper member shown in FIG.

FIG. 3 is a bottom view for explaining the operation of the wiper member shown in FIG. 1;

FIG. 4 is a perspective view showing an example of a conventional optical disk device viewed from a bottom surface side.

5 is a perspective view showing the optical disk device shown in FIG. 4 in a state where a disk tray is pulled out.

FIG. 6 is a side view showing a state of the optical disk device shown in FIG. 4 when the disk tray exits.

FIG. 7 is a side view showing a state of the optical disk device shown in FIG. 4 when the disk tray enters.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Optical disk device 2 Device housing 3 Disk tray 4 Optical disk 5 Push button 6 Control circuit board 7 Flexible substrate 8 Rail guide 9 Guide rail 11 Optical disk device 12 Wiper member 12a Short arm portion 12b Long arm portion 13 Guide member 13a Curved guide surface 14 Support Shaft 15 Boss part 16 Torsion spring

Claims (2)

[Claims] 1. A box-shaped device housing having a disk drive space having an open front surface, and a control circuit board disposed in the disk drive space, and being capable of entering and leaving the device housing via the opening. A disk tray that transports an optical disk between a disk mounting position and a disk drive position, and is accommodated in the device housing so as to be double-folded and expandable, and that the disk tray and the control circuit board are And a wiper member that is displaceably provided on the disc tray, and that is displaced in conjunction with the retreat operation when the disc tray retreats from the apparatus housing, and that displaces the surface of the flexible board together with the displacement. An optical disk device comprising: 2. The apparatus is disposed on a path of the wiper member,
2. The optical disk device according to claim 1, further comprising a guide member that mechanically guides the wiper member in accordance with the approach and retreat operations of the disk tray.