JP2002230921A - Tray incorporating type disk device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify a connection structure between a pickup part and a flexible substrate in a tray incorporating type disk device and also to prevent such a hindrance that the pickup part is caught by the flexible substrate when the pickup part is moved without enlarging clearance between the pickup part and the flexible substrate. SOLUTION: When the nearly half of the flexible substrate 73 connected to an optical pickup part 23 is bent to the other side of a paper surface by 180 deg., its state is changed from (a) to (b). When the optical pickup part is moved to an outer side in a prescribed disk radius direction in this state, the projecting part 77 of the optical pickup part 23 is moved on a part with a wide width B in the flexible baseboard all the time. Thus, such hindrance that the projecting part 77 of the optical pickup part 23 is caught by the flexible substrate is prevented from occurring.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk drive, and more particularly to a connection structure between a pickup unit and a flexible substrate in a disk drive with a built-in tray incorporated in a notebook personal computer or the like.

[0002]

2. Description of the Related Art Disk drives of this type can be roughly classified into the following two types in terms of structure. The first type of disk drive is a type in which a disk drive / playback mechanism such as an optical pickup, a disk motor, and a turntable is incorporated (mounted) in a tray, and the second type of disk drive is a type in which only an optical disk is loaded into a tray. And the disk drive / playback mechanism is built in the unit (housing) side.

[0003] The present invention relates to a disk device with a built-in tray. Such a disk device with a built-in tray is described, for example, in Japanese Patent Application Laid-Open No. 9-44955 (hereinafter referred to as "prior art document").

[0004] A conventional disk device with a built-in tray as described in the prior art includes a main chassis capable of storing the tray, a sub-chassis supporting the tray,
It has a base mounted on the upper part of the sub-chassis, a pickup unit movably mounted on the base, and a turntable mounted on the base. As described above, since the pickup section and the turntable are attached to the base, the base vibrates when the pickup section slides or the turntable is driven to rotate. In order to prevent the vibration of the base from being transmitted to the sub-chassis, a plurality of vibration isolating members for absorbing the vibration of the base are provided between the sub-chassis and the base.

On the other hand, in the disk drive described in the prior art document, the motor base member has a function equivalent to that of the conventional printed circuit board, thereby eliminating the need for the conventionally required printed circuit board. As a result, it is possible to reduce the thickness of the drive unit, thereby reducing the thickness of the disk device, and to reduce the number of components.

Here, if a configuration that does not require a printed circuit board is adopted, wiring for connecting the connector of the flexible board and each electric component (pickup unit, disk motor and pickup driving motor) becomes a problem. Therefore,
In the disk device described in the prior art document, a connector of the flexible substrate is connected to each electric component using a flexible substrate for connection within the unit.

[0007]

In the disk device described in the prior art document, the connection between the connector of the flexible substrate and each electric component is complicated. Also, in order to prevent the occurrence of a problem that the flexible board is caught when the pickup section moves, the clearance between the pickup section and the flexible board has to be increased, so that the thickness of the disk device must be reduced. It is difficult to achieve enough.

Accordingly, an object of the present invention is to improve the disadvantages of the disk device described in the prior art document and to simplify the connection structure between the pickup unit and the flexible substrate in a disk device with a built-in tray, and furthermore, to simplify the connection between the pickup unit and the flexible substrate. It is an object of the present invention to prevent a problem in which a flexible substrate is caught when a pickup unit moves without increasing a clearance between the flexible substrate and the substrate.

[0009]

According to the present invention, there is provided a disk drive (10) with a built-in tray in which a disk drive / playback mechanism is built in a tray (12), wherein a main chassis capable of storing the tray is provided. (11) the tray comprising: a base (25) attached to the tray; a pickup section (23) movably attached to the base; and a turntable (24) attached to the base. In the embedded disk device, a flexible board (73) is connected to the pickup section (23), the flexible board is bent at 180 °, and when the pickup section moves, the pickup section is bent at all times. , A disk device with a built-in tray is obtained.

[0010] The reference numerals in the parentheses are provided to facilitate understanding of the present invention, and are merely examples, and the present invention is not limited to these.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a first embodiment of the present invention will be described in detail with reference to the drawings.

A disk drive 10 according to a first embodiment of the present invention will be described with reference to FIGS.
The illustrated disk device 10 is a CD-ROM drive device, which is a device built in a housing of a notebook personal computer (not shown). The illustrated disk device 10 is a disk device with a built-in tray in which a disk drive / playback mechanism such as an optical pickup, a disk motor, and a turntable is mounted (mounted) on the tray 12 as described later. FIG. 1 shows a state in which the tray 12 has been moved to a disk device position stored in the main chassis (outer case) 11, and FIG. 2 shows a state in which the tray 12 has been pulled out of the main chassis (outer case) 11 in the disk replacement position. Shows the state of movement.

The disk device 10 includes a disk (CD-R).
OM) (not shown)
2 and a tray sliding mechanism 14 that slidably supports the tray 12.

The tray 12 is formed such that a width of the disk (not shown) is smaller than the outer shape of the disk so that a part of the disk protrudes from the tray 12. The tray 12 is configured to be slidable in the front-rear direction with respect to the main chassis 11 as indicated by arrows A and B in the figure by manual operation by the tray sliding mechanism 14. In FIG. 1, the tray 12 is inserted in the direction of arrow B, is located at the disk device position, and is pulled out in the direction of arrow A in FIG.
Is located at a disk replacement position for replacing a disk with respect to the tray 12.

As shown in FIG. 2A, the tray 12 has a disk facing surface 12a for forming a space for the disk to face, and an optical pickup and a turntable for the turntable provided in the disk facing surface 12a. And an opening 12b. The disk facing surface 12a has a width smaller than the outer diameter of the disk, and is formed so as to cover an area of about ２ of the disk. This allows
The size of the disk device 10 can be reduced.

A front bezel (panel) 15 is fixed to the front end of the tray 12. The front bezel 15 slides integrally with the tray 12 in the front-rear direction indicated by arrows A and B.
The tray 12 is located slightly to the right of the center of the front bezel 15.
Is provided with a switch button 16 for releasing the lock by a lock mechanism described later when the user pulls out. Therefore, when the switch button 16 is turned on in the state shown in FIG. 1, the front bezel 15 projects a predetermined amount in the A direction with respect to the main chassis 11 as described later. This facilitates the operation of pulling out the tray 12.

At the rear (back) of the main chassis 11,
A circuit board 17 is provided, and a drive unit 18 described below is attached to the tray 12. As described above, since the tray 12 moves in the directions of arrows A and B together with the drive unit 18, the connection between the drive unit 18 and the circuit board 17 is performed using the flexible board 19. The circuit board side end of the flexible board 19 is connected to a connector 20 provided on the circuit board 17. The drive unit side end of the flexible substrate 19 is connected to a connector (terminal part) 22 provided on the motor base 21.

Next, the drive unit 18 will be described with reference to FIG. 3 in addition to FIGS. The drive unit 18 is provided with an optical pickup unit 23, a turntable 24, and the like. The drive unit 18 includes a turntable 24, a base 25 mounted on the upper part of the sub-chassis 13, an optical pickup unit 23 movably mounted on the base 25, and an optical pickup unit 2.
An optical pickup driving unit 26 for moving the optical disc 3 in a predetermined disc radial direction, a disc motor 27 for rotating the turntable 24, and the like are provided.

As shown in FIG. 1, the tray 12 has a plurality (three in this example) of bosses 131 for positioning the drive unit 18. On the other hand, as shown in FIG. 2A, the sub-chassis 13 has a boss receiving portion 121 having a through-hole 121a at a position corresponding to the three bosses 131. That is, during assembly, the boss 131 of the sub-chassis 13
Is inserted into the through hole 121a of the boss receiving portion 121.

On the other hand, as shown in FIG.
Is fitted into the opening 12b of the tray 12,
Between the sub-chassis 13 and the base 25, a plurality of anti-vibration members 60 (in this example, 3
Pieces) are arranged. This vibration isolating member 60 is also called an insulator. On the other hand, the base 25 has three insulator mounting portions 28 for mounting the three insulators 60, respectively, and these three insulator mounting portions 28 correspond to the boss 131 of the sub-chassis 13 described above.
Is provided at a position corresponding to.

In any case, the optical pickup section 23 and the turntable 24 attached to the base 25 are absorbed by the vibration isolator (insulator) 60, so that the turntable 24 and the disk on the turntable rotate. The effects of vibration are reduced.

Referring also to FIG. 4, the optical pickup driving section 26 has a function of moving the optical pickup section 23 in the directions of arrows C and D in the figure, and is provided on the lower surface of the base 25. . More specifically, the optical pickup driving unit 26 includes an optical pickup driving motor 29 in which a gear 30 is disposed on a driving shaft, a gear 31 that engages with the gear 30,
An optical pickup driving mechanism 33 provided with a lead screw 32, a lead screw 34 driven through the optical pickup driving mechanism 33, and a movement of the optical pickup section 23 extending in parallel with the lead screw 34. It comprises a guide portion 35 for guiding.

In the above configuration, the optical pickup unit 23
Is an engaging portion 3 that engages with the thread portion of the lead screw 34.
6. For this reason, the optical pickup driving motor 2
When the lead screw 34 is driven to rotate via the optical pickup driving mechanism 33 due to the rotation force, the optical pickup unit 23 moves in a predetermined disk radial direction (C and D directions). The base 25 has an elongated hole 25a. The position where the elongated hole 25a is formed is configured to correspond to the moving direction of the optical pickup unit 23. Therefore, the optical pickup unit 23
When reading data from the disk, the disk moves so as to face the disk over the moving range (data reading range).

Here, in the present embodiment, in order to release the lock by the lock mechanism described later, the optical pickup unit 23 can be moved further outward in the disk radial direction than this data reading range. In addition, the lead screw 34 and the guide portion 35 are configured to extend slightly (a predetermined distance) outward in the radial direction of the disk.

Next, the lock mechanism 40 will be described in detail with reference to FIG. The lock mechanism 40 is connected to the tray 12.
Is a mechanism for locking the tray 12 with respect to the main chassis 11 when moved to the disk mounting position.
The lock mechanism 40 includes a lock portion 41 protruding inward on the front side of the right wall of the main chassis 11 and a lock plate (lock member) 42 provided near the right front end of the tray 12 and engaged with the lock portion 41. And a biasing means 43 for constantly biasing the lock plate 42 in a direction in which the lock plate 42 is engaged with the lock portion 41.

The lock plate 42 is rotatably supported around a lock shaft 421 erected from the back surface of the tray 12. Further, the lock plate 42 includes an arm 423 having a cylindrical portion 422 at the distal end for engaging with the lock portion 41, and a connecting arm 42 connected to the urging means 43.
And 4. The cylindrical portion 422 is attached so as to be rotatable around a pin 425 erected on the tip (free end) side of the arm 423. The connection arm 424 has a pin 426 erected at the tip (free end) thereof, and the urging means 43 described later is connected to the pin 426.

On the other hand, the lock portion 41 has a substantially rectangular shape, and when the tray 12 moves in the direction of arrow B, the cylindrical portion 422 abuts while rotating while contacting with the cylindrical portion 422; 411 and a locking portion 412 for locking the cylindrical portion 422 so that the tray 1
The tray 12 can be locked with respect to the main chassis 11 when the tray 2 is moved to the disk mounting position.

The urging means 43 includes an arm plate 44,
And a coil spring 45. The lock plate 42 is constantly urged by the urging means 43 in a direction in which the lock plate 42 is engaged with the lock portion 41.

The disk device 10 has a lock release mechanism 50 for releasing the lock by the lock mechanism 40.
The lock release mechanism 50 is disposed between the lock mechanism 40 and the optical pickup unit 23, and releases the lock by the lock mechanism 40 in response to the ON operation of the switch button 16.

The engaging section 36 of the optical pickup section 23 includes
At the time of the lock release operation, an engagement protrusion 36a that engages with the lock release mechanism 50 is formed. Here, the “unlock operation” means that the optical pickup unit 23 once moves outward in the disk radial direction from the data reading range and then moves inward in the disk radial direction by turning on the switch button 16 (unlock operation). Is an operation that performs The lock release mechanism 50 includes a hook arm 51 that engages with the engagement protrusion 36a during the lock release operation, and a guide / regulator 52 that guides and regulates the movement of the hook arm 51.

Although a detailed description of the structure and operation of the lock release mechanism 50 is omitted, the lock release mechanism 50 is disclosed in Japanese Patent Application No. 295114 filed on Oct. 18, 1999 by the present applicant. "Lock release mechanism of disk device incorporated in tray".

Now, the connection structure between the optical pickup section and the flexible substrate, which is the main point of the first embodiment of the present invention, will be described with reference to FIG.

The related structure between the optical pickup section 23 and the flexible substrate 73 is configured as follows. That is,
One end 74 of the flexible substrate 73 is connected to the pickup unit 23, and a connector 75 is provided at the other end of the flexible substrate 73. The flexible board 73 is bent in the middle, and the width of the bent portion and the vicinity thereof is set to b.

When the approximately upper half of the flexible substrate 73 in FIG. 5A is bent 180 ° toward the paper surface, FIG.
(B) is reached. In this state, the optical pickup unit 2
3 is a predetermined (arrow direction) disk radially outer side (FIG. 1).
Move in the direction D).
The protrusion 77 of the side surface corner portion 76 of the flexible substrate 73
And the flexible substrate 73 may be involved. There is no problem if there is sufficient clearance below the optical pickup unit 23, but it is difficult to provide sufficient clearance in a thin CD-ROM drive due to the limited space.

Therefore, a connection structure between the optical pickup unit and the flexible substrate according to the second embodiment of the present invention will be described with reference to FIGS. In the second embodiment,
This is to prevent the optical pickup unit according to the first embodiment from being caught on the flexible substrate.

A rack 71 is fixed to one end of the optical pickup section 23 with screws 72. Further, the lead screw 34 is inserted into a hole (not shown) provided on one side of the optical pickup unit 23. In the optical pickup unit 23,
One end 74 of the flexible substrate 73 is connected. Also,
A connector 75 is connected to one side of the flexible substrate 73 corresponding to the one end 74. The width B in the range from the other end of the flexible substrate 73 in the second embodiment to about half is set to the flexible substrate 7 in the first embodiment.
3 is set to be larger than the width b.

When approximately half of the flexible substrate 73 in FIG. 6 is bent 180 ° toward the paper surface, the state shown in FIG. 7A is changed to the state shown in FIG. 7B. In this state, when the optical pickup unit 23 is moved outward (in the direction D in FIG. 1) in the radial direction of the disc by the optical pickup driving unit 26, the projecting portion 77 of the optical pickup unit 23 Move on the part of.
Therefore, unlike the first embodiment, the projecting portion 77 of the optical pickup unit 23 does not hinder the flexible substrate 73 from being caught.

Although the preferred embodiments of the present invention have been described above, it is needless to say that the present invention is not limited to the above embodiments. For example, in the above-described embodiment, the case where the present invention is applied to a CD-ROM drive device has been described, but the present invention is not limited to this, and a CD-R drive device, a CD-RW drive device, a DVD-RAM drive Of course, the present invention can be applied to an apparatus.

[0039]

As is apparent from the above description, the present invention has the following advantages.

1. The connection structure between the pickup unit and the flexible substrate is simplified.

2. When the pickup unit moves, there is no problem of getting caught on the flexible substrate.

3. In order to realize the above 2, it is not necessary to increase the clearance between the pickup unit and the flexible substrate.

4. The degree of freedom in designing a connector for fixing the flexible substrate is increased.

[Brief description of the drawings]

FIG. 1 is a perspective plan view showing a configuration of a disk device with a built-in tray according to a first embodiment of the present invention.

FIG. 2 shows a disk device with a built-in tray in FIG.
It is the schematic which shows a state which pulled out the tray, (a) is a perspective plan view, (b) is a transparent left side view, (c) is a transparent right side view.

FIGS. 3A and 3B are views showing a drive unit used in the disk device with a built-in tray shown in FIG. 1, wherein FIG. 3A is a perspective plan view and FIG.

FIG. 4 is a perspective plan view showing a state at the time of data reading in the disk device with a built-in tray shown in FIG. 1;

5A and 5B are enlarged plan views of an optical pickup unit and a flexible substrate in the disk device with a built-in tray shown in FIG. 1, wherein FIG. 5A is a state before the flexible substrate is bent, and FIG. The later states are shown respectively.

FIG. 6 is an enlarged plan view of an optical pickup unit, a flexible substrate, and a lead screw in a disk device with a built-in tray according to a second embodiment of the present invention.

7A and 7B are plan views of the optical pickup unit and the flexible substrate in FIG. 6, wherein FIG. 7A shows a state before the flexible substrate is bent, and FIG. 7B shows a state after the flexible substrate is bent.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Tray built-in disk device 11 Main chassis (outer case) 12 Tray 13 Subchassis 23 Optical pick-up part 24 Turntable 25 Base 73 Flexible board 77 Projecting part B Flexible board width b Flexible board width

Claims (1)

[Claims] 1. A tray-incorporated disk device of a type in which a disk drive / playback mechanism is incorporated in a tray, comprising: a main chassis capable of storing the tray; a base attached to the tray; In the disk device with a built-in tray provided with a pickup unit attached to the base and a turntable attached to the base, a flexible substrate is connected to the pickup unit, the flexible substrate is bent 180 °, and the pickup unit is Wherein the pickup unit is positioned on the flexible substrate that is bent all the time.