JP2002298380A - Skew adjusting mechanism of pickup in disk device and disk device having the same skew adjusting mechanism - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide skew adjusting mechanism of optical pickup by which skew is easily performed even after the optical pickup is incorporated in two guide lots and a disk device having the skew adjusting mechanism. SOLUTION: In the disk device 1 having the pickup provided to be freely moved back and forth in the radius direction of a disk along two of a first guide rod 371 and a second guide rod 372 arranged in parallel and to reproduce information recorded in the disk or to record the information in the disk and to reproduce the recorded information, it is provided with the skew adjusting mechanism 42 formed by providing a guide rod pressurizing spring 421 to displace the second guide rod 372 after incorporating the first guide rod 371 and the optical pickup 351 in a holding member 340, a guide rod holding member 430 and a screw 436 to be screwed with the guide rod holding member 430 and to adjust the skew of the optical pickup 351 by displacing the second guide rod 372 upward and downward by adjusting tightening of a screw 436.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a skew adjustment mechanism for an optical pickup of a disk drive and a disk drive having the skew adjustment mechanism.

[0002]

2. Description of the Related Art FIG. 56 is an exploded perspective view showing an example of a pickup base of a conventional disk drive.

As shown in FIG. 56, a pickup base 772 of a conventional disk device reciprocates in the radial direction of a disk by two guide rods 773a and 773b fixed to a holding member for supporting the pickup base 772. You will be guided freely. The pickup base 772 is provided with an actuator base 774, a damper base 775 attached to the actuator base 774, and an objective lens 771 attached to the damper base 775.

The objective lens 77 having the above configuration
In order to accurately read the information recorded on the recording surface of the disk by the optical disc 1, the optical axis of the beam emitted from the optical pickup 771 to the disk is irradiated in a direction perpendicular to the recording surface of the disk, and the recording surface of the disk is It is necessary to accurately condense the reflected light from.

Therefore, in this conventional disk drive, the actuator base 774 is rotated and displaced in the direction of Ta in FIG. 56 in order to adjust the optical axis of the beam emitted from the optical pickup to the recording surface of the disk. A skew adjustment mechanism for adjusting tangential skew is provided.

[0006]

However, in the skew adjusting mechanism of the conventional disk drive, the pickup base 772 is connected to the two guide rods 773a and 773.
3b, the optical pickup 771 is connected to the two guide rods 773a and 773a.
It was difficult to adjust the tangential skew after assembling to 3b.

In view of the above problems, the present invention provides a skew adjustment mechanism for an optical pickup that can easily adjust tangential skew even after the optical pickup is assembled to two guide rods, and the skew adjustment mechanism. It is an object of the present invention to provide a disk device provided with:

[0008]

This and other objects are achieved by the present invention which is defined below as (1) to (10).

(1) Along the two first guide rods and the second guide rod arranged side by side, the disc is reciprocally movable in the radial direction of the disc, and records and / or reproduces information recorded on the disc. And a skew adjusting means for adjusting the skew of the pickup by displacing the second guide rod with respect to the fixed first guide rod. Skew adjustment mechanism of pickup in disk device.

(2) The pickup has a pickup base slidably connected at one end to the first guide rod and at the other end to the second guide rod. The skew adjustment mechanism of the pickup in the disk device according to the above (1), further comprising a displacement means capable of rotating and displacing the pickup base about the axis of the first guide rod.

(3) The skew adjustment mechanism of the pickup in the disk device according to (2), wherein the displacement means is for displacing at least one end of the second guide rod.

(4) The skew adjustment mechanism of the pickup in the disk device according to (3), wherein the displacement means is for displacing both ends of the second guide rod.

(5) The first guide rod is fixed to one frame body, and the second guide rod is displaceably positioned on the frame body according to any of (1) to (4). A skew adjustment mechanism for a pickup in the disk device according to any one of the above.

(6) The second guide rod is in contact with a guide rod pressing spring that presses the peripheral surface of the second guide rod, and on the opposite side of the peripheral surface of the second guide rod from the guide rod pressing spring. The skew adjustment mechanism of the pickup in the disk device according to the above (5), wherein the skew adjustment mechanism is positioned on the frame by the guide rod holding member.

(7) The disk device according to (6), wherein the guide rod holding member has adjusting means for adjusting a distance between a peripheral surface of the guide rod holding member and a mounting surface of the frame. Skew adjustment mechanism of the pickup.

(8) The adjusting means is provided with a screw hole provided in the guide rod holding member, a screw screwed into the screw hole, and an insertion hole provided on the mounting surface of the frame, and through which the screw is inserted. The skew adjustment mechanism of the pickup in the disk device according to the above (7), wherein the skew adjusting mechanism comprises a hole, and adjusts a distance between a head of the screw and the screw hole by tightening the screw.

(9) The holding member has the screw hole, and has an upper piece abutting on the second guide rod; a lower piece facing the upper piece and having a mounting hole for mounting the screw; The above (8), which is a member having a substantially U-shaped cross section having the upper piece and the connecting piece for connecting the lower piece.
A skew adjustment mechanism of the pickup in the disk device described in (1).

(10) A disk device according to any one of (1) to (9), further comprising a pickup skew adjustment mechanism.

Other objects, functions and effects of the present invention will become more apparent from the following description of embodiments with reference to the drawings.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment according to the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a perspective view showing the overall structure of a disk drive according to the present invention, and FIG. 2 is a top view of the apparatus main body of the disk drive.

As shown in FIG. 1, the disk drive 1
An optical disk device for reproducing or recording / reproducing a disk 10 such as D or DVD, which moves in a front-rear direction (horizontal direction) with respect to the device main body 30 (see FIG. 2) housed in a casing 20. And a disc tray 51 for carrying the disc 10 to be transported.

As shown in FIG. 2, this device main body 30
It has a printed circuit board (not shown) and a chassis 31 provided on the printed circuit board. Also,
The device main body 30 is housed in the casing 20 formed of a thin metal plate as described above.

The printed circuit board (not shown)
Mounted thereon are interface connectors for connecting to a computer main body and the like, various ICs such as a microprocessor, a memory, and a motor driver, and various electronic components such as resistors, capacitors, and switches. And
Via these, control of a spindle motor, a loading motor, a thread motor, an optical pickup, and the like, which will be described later, is performed.

In the front part of the casing 20,
A front bezel 46 is attached.

FIG. 3 is a front view of the front bezel 46, FIG. 4 is a sectional view taken along line AA of FIG. 3, and FIGS. 5 (a) and 5 (b) show concave portions 470a and 470b and a guide groove portion 471a, respectively. And FIG. 471b is an enlarged view of FIG. Also,
FIGS. 6A and 6B are a sectional view taken along the line BB and a line CC of FIGS. 5A and 5B, respectively.

The front bezel 46 is formed of a resin or the like, and has an opening 463 for taking the disk tray 51 out of the apparatus main body 30 as shown in FIGS. I have. A jig insertion hole 48 into which a thin rod-shaped jig is inserted when the eject button 480 of the disc tray 51 or an emergency discharge mechanism described later is used.
1 and the like are provided.

The opening 463 of the front bezel 46
Is provided with a shutter 49 which has substantially the same shape as the opening 463 and covers the opening 463 when the disc tray 51 is housed inside the apparatus main body 30.

FIGS. 7 and 8 are a front view and a right side view of a shutter according to the disk drive of the present invention, and FIG. 9 is an enlarged view of a shaft portion of the shutter. FIG. 10 is an explanatory diagram showing a positional relationship between the shutter and the front bezel when the shutter is attached to the front bezel.

The shutter 49 is, as shown in FIG.
It is almost plate-shaped, extending in the left-right direction. Further, the shutter 49 is attached to the front bezel 46 at both ends in the longitudinal direction of the shutter 49, that is, at the lower portions on both left and right sides, and when the shutter 49 is opened and closed,
Shafts 491a, 4 serving as the rotation center of the shutter 49
91b are provided.

The shaft portions 491a and 491b are
When the shutter 49 is attached to the front bezel 46, the shutter 49 is positioned below the opening 463, so that the shutter 49 rotates around the lower portion of the opening 463 provided in the front bezel 46. Has become.

As shown in FIG. 9, a pair of plane portions 492a and 492b parallel to each other and the plane portions 492a and 492b are formed on the outer peripheral surfaces of the shaft portions 491a and 491b.
Circumferential parts 493a, 493b connecting the ends of 92b
Are provided, and the shaft portions 491a and 491b are provided.
Has a substantially oval cross-sectional shape in the axial direction.

In the present embodiment, the flat portions 492a and 492b have a positional relationship parallel to the upper surface 500 and the lower surface 501 of the shutter 49. The reason will be described in detail later.

The interval between the flat portions 492a and 492b is formed to be substantially the same as the width of guide grooves 471a and 471b described later provided in the front bezel 46.

As shown in FIGS. 4 and 5, the front bezel 46 has a shaft portion 491 of the shutter 49.
a and 491b, and has recesses 470a and 470b for rotatably attaching the shutter 49 to the front bezel 46.

The recesses 470a and 470b are provided at left and right edges 464a and 464b of the opening 463 of the front bezel 46 as shown in FIGS. 3 and 4, and as shown in FIG. The shaft portion 491 has a substantially cylindrical recess having the same central axis as the shaft portions 491a and 491b.

The shutter 49 is provided above the recesses 470a and 470b.
When attaching to the recess 49, the shaft portions 491a and 491b provided at the left and right ends of the shutter 49 are
Guide grooves 471a and 471b for guiding to 70a and 470b are provided.

As shown in FIGS. 5A and 5B, the guide grooves 471a and 471b
And approximately 470b. The guide grooves 471a and 471b are provided with a front surface 472 and a rear surface 473 facing each other, and a connection surface 474.
And the distance between the front part 472 and the rear part 473 is substantially equal to the distance between the flat parts 492a and 492b provided on the shaft parts 491a and 491b. I have.

The guide grooves 471a and 471b
The upper portions of the connection surface portions 474a and 474b of FIG.
As shown in (a) and (b), the upper surface is an inclined surface 475 that is inclined so that the upper end is located on the outside in the left-right direction and the lower end is located on the inside in the left-right direction. The guide groove 47
The shaft portions 491a and 491b of the shutter 49 inserted from the upper side of 1a and 471b are guided by the inclined surfaces 475 to the connection surfaces 474a and 474b, and further guided to the concave portions 470a and 470b, and the concave portions 470a and 470b. 470b and the shaft portions 491a and 491b
70a and 470b, the recess 4
70a and 470b.

The procedure for attaching the shutter 49 to the front bezel 46 will be described below.

First, the opening 46 of the front bezel 46
3 is inserted with the shutter 49. At this time, as shown in FIG. 10, the upper surface 500 of the shutter 49 is
So that the lower surface 501 of the shutter 49 is positioned on the rear surface 462 side of the front bezel 46,
Is horizontally moved, and the shaft portion 491 of the shutter 49 is moved.
a and 491b are positioned above the guide grooves 471a and 471b of the front bezel 46.

As described above, by setting the front surface 461 of the front bezel 46 and the front surface 502 of the shutter 49 to be substantially perpendicular, the front portions 472 of the guide grooves 471a and 471b provided in the front bezel 46 are provided. The rear surface portion 473 and the flat portions 492a and 492b provided on the shaft portions 491a and 491b of the shutter 49 have a parallel positional relationship. Then, the shaft portions 491a and 491b can be inserted into the concave portions 470a and 470b through the guide groove portions 471a and 471b.

Next, the shutter 49 is inserted into the front bezel 46 by applying an external force directed downward from above to the shutter 49. That is, the shutter 49 is slightly deformed by pressing substantially the center of the rear surface of the shutter 49 in the longitudinal direction, thereby narrowing the interval between the end faces of the shaft portions 491a and 491b, and the recess 47 of the front bezel 46.
The shutter 49 is attached to the front bezel 46 by engaging the shutter 49 with the front bezel 46.

As described above, in the shutter mounting structure according to the present embodiment, when the shutter 49 is mounted on the front bezel 46, the mounting operation is completed only by pressing substantially the central portion of the rear surface 503 of the shutter 49. Therefore, the conventional shutter mounting structure, that is, the shutter 720 is flexed by pressing a total of three places near the center of the rear surface 723 of the shutter 720 and near both ends of the front surface 722 of the shutter 720, and then mounted on the front bezel. The installation work is much easier than the structure.

In this embodiment, as described above,
The guide grooves 471a and 471b are
a and 470b. Also, the flat portion 492 provided on the shaft portions 491a and 491b
a and 492b are the upper surface 500 of the shutter 49.
And are formed substantially parallel to the lower surface 501. By using such a structure, even if the shutter 49 is intentionally pulled by a user using the disk device 1, the front bezel 4
The structure in which the shutter 49 is less likely to come off from 6 is provided.

In the present embodiment, the front bezel 46 is used as a support member for the shutter 49 according to the present invention. It is also possible to use it as a member. Also, the guide groove 471a
And 471b are not limited to the present embodiment,
It is also possible to provide not only above but also below 0a and 470b.

As shown in FIGS. 2 and 14, the apparatus main body 30 housed in the casing 20 has a chassis 31 formed of a hard resin or the like. The chassis 31 includes a bottom 311 having a substantially rectangular opening 312 formed therein, and a wall 313 standing upright in a substantially U-shape along the left, right and rear edges of the bottom 311.

The wall portion 313 is not formed on the front side of the chassis 31 and is open. When the device main body 30 is incorporated into the casing 20, the open portion of the chassis 31 is aligned with an opening 463 of a front bezel 46 described later attached to the casing 20, and the opening 463 is formed.
The disc tray 51 can be taken in and out via the. The details of the chassis 31 will be described later.

FIGS. 11 to 13 are a top view, a bottom view, and a plan view, respectively, of a disk tray according to the disk drive of the present invention.
FIG. 12 is a sectional view taken along line DD in FIG. 11.

As shown in FIG. 11, the disk tray 51 has a disk mounting portion 511 having a shallow concave shape. Then, the disk 10 is mounted on the disk mounting portion 511 of the disk tray 51, and is conveyed to a disk loading position (disk reproducing position) in a state where the position of the disk 10 is regulated at a predetermined position.

Here, as shown in FIG. 13, the disk mounting portion 511 has a guide slope 512 for guiding the outer edge portion 102 of the disk 10 when the disk 10 is mounted on the disk tray 51, and It is formed continuously at the lower end of the guide slope 512 and faces the outer peripheral surface 103 of the disk 10 when the disk 10 is placed on the disk tray 51, and is substantially parallel to the thickness direction of the disk 10. It has an inner wall surface 513.

The lower end of the inner wall surface 513 contacts the lower surface 101 of the disk 10,
The support surface 514 supporting the O. 0 is formed so as to be substantially perpendicular to the inner wall surface. When the disk tray 51 is slid or when the disk device is placed vertically, the disk 1 is placed on the upper end of the inner wall surface from the disk mounting portion 511 of the disk tray 51.
A disc detachment preventing member 515 is provided in order to prevent a trouble such as the detachment of the disc 0 and the remaining inside the apparatus main body 30. The disk detachment preventing member 515 is effective if provided at a part of the upper end of the inner wall surface 513. However, as shown in FIG. Is provided. A portion indicated by reference numeral 519 is a mounting hole for mounting a holding member (not shown) for preventing the disk 10 from jumping out when the disk device 1 is placed vertically.

These guide slopes 512, inner wall surfaces 513,
The support surface 514 and the disk detachment preventing member 515
The disks 10 are provided substantially concentrically with respect to the center of rotation of the disk 10 mounted on the disk mounting portion 511, and each is located near the outer edge 102 of the disk 10.

More specifically, the guide slope 51
2 is a position where the disk 10 is slightly shifted from the inner wall surface 513 when the disk 10 is mounted on the disk mounting portion 511, that is, as shown in FIG. When the outer edge 102 of the lower surface 101 contacts the guide slope 512, the disk 10
The lower surface 101 of the disk 10 is guided downward along the guide slope 512, and the lower surface 101 of the disk 10 is
4 has a function of reliably reaching the position.

On the other hand, the inner wall surface 513 is in a state where the disk 10 is mounted on the disk mounting portion 511,
When the disk tray 51 moves between the disk take-out position and the disk loading position, the disk tray 51 has a function of suppressing rattling of the disk 10 in the disk mounting portion 511.

More specifically, when the disk tray 51 is moved between the disk take-out position and the disk loading position, the disk 10 mounted on the disk mounting portion 511 moves. Disc 1
The disk is slightly moved in the disk mounting portion 511 by an inertia force of zero. At this time, the inner wall surface 513 holds the outer peripheral surface 103 of the disk 10 and the disk 10
Is stopped at the position of the inner wall surface 513.

At this time, if the inner wall surface 513 is not in a positional relationship substantially parallel to the outer peripheral surface 103 of the disk 10 like the disk tray 51 of the present embodiment,
If the guide slope 737 of the disk tray 730 of the conventional disk device 70 shown in FIG. 55 is inclined, the guide slope 7 is moved with the movement of the disk tray 730.
The lower surface of the disk 10 is guided upward along the inclination of 37, and in some cases, the disk 10 jumps out of the disk mounting portion 735 of the disk tray 730, and the recording surface of the disk 10 is damaged. Or the disk 10 may be left inside the disk device, making the disk 10 unremovable.

As described above, the inner wall surface 513 of the disk mounting portion 511 of the present embodiment has a positional relationship parallel to the outer peripheral surface 103 of the disk 10 mounted on the disk support surface 514. Therefore, when the disk 10 is moved by sliding of the disk tray 51, the disk 10 abuts not only near the lower end but also near the upper end of the outer peripheral surface 103 of the disk 10, and the disk 1
The movement of 0 can be restricted. Therefore, in the disc tray 51 of the present embodiment, the disc tray 73 used in the above-described conventional disc device is used.
As shown by 0, the outer edge portion 102 of the disk 10 is lifted upward by the guide slope 737 due to the movement of the disk 10 due to the sliding of the disk tray 730, and does not separate from the disk tray 730.

As shown in FIG. 11, the support surface 514 is provided substantially concentrically with respect to the center of rotation of the disk 10, and when the disk 10 is mounted, it is located near the outer periphery of the disk 10. It comes into contact only with the non-recording surface located. The recording surface is prevented from being damaged by the lower surface 101 of the disk 10 coming into contact with the bottom surface 517 of the disk mounting portion 511.

Further, the disc tray 51 has
As shown in FIGS. 1 and 12, the disk mounting portion 511
A substantially rectangular opening 516 from substantially the center to the rear of the
Are formed. Then, a turntable 321 to be described later is lifted through the opening 516, and scanning of an optical pickup 351 to be described later is performed.

As shown in FIG. 12, a slider movement restricting rib 520 for restricting the movement of a slider 680, which will be described later, protrudes from the rear part of the opening 516 and the lower surface 518 of the disk tray 51. . The slider movement restricting rib 520 has a front guide slope 521 and a rear guide slope 522 for guiding a slider 680 described later. The slider movement restricting rib 5
20 functions will be described later in detail.

As shown in FIG. 12, the chassis 31 is provided on both left and right sides of the lower surface 518 of the disc tray 51.
Guide grooves 530L, 53 respectively engaging with guide members 323 (see FIG. 14) protruding left and right of the bottom 311
0R is formed in the front-back direction.

The lower surface 51 of the disc tray 51
8 further includes a linear rack gear 541 extending in the front-rear direction of the disk tray 51, and an approximately 180-degree linear shaft gear 541 formed so as to be continuous with the front end (the front side of the disk tray 51) of the linear rack gear 541. A rack gear 540 having an arc-shaped rack gear 542 at an angle; and a linear guide groove 551 provided along the linear rack gear 541 and arranged along the rack gear 540, and provided along the arc-shaped rack gear. Arc-shaped guide groove 5
A guide groove 550 having 52 is provided.

Further, the lower surface 51 of the disc tray 51
8, on the opposite side of the arc-shaped rack gear 542 at the front, as shown in FIG. 12, provided is a rib for an emergency discharge mechanism used when the disc tray 51 is pressed forward by an emergency discharge mechanism described later. I have.

Incidentally, a disc tray movement restricting rib (projection) indicated by reference numeral 561 in the figure engages with a disc tray lock 316 formed on the chassis 31 described later via a first projection 582 of the cam member 572. This is for restricting the movement of the disk tray 51 in the horizontal direction (front-back direction).

FIG. 14 is a top view of the chassis 31 according to the disk drive of the present invention. FIG. 16 is a top view of a base frame of a mechanism unit according to the disk drive of the present invention, and FIGS. 17 and 18 are a top view and a bottom view of a holding member of the mechanism unit.

As shown in FIG. 2, a turntable 321 on which the disk 10 is mounted is mounted on the chassis 31.
A mechanism unit 32 provided with an optical pickup 351 for reproducing or recording / reproducing the disc 10 is provided.

The mechanism unit 32 is disposed so as to fit into a substantially rectangular opening 312 formed in the bottom 311 of the chassis 31 shown in FIG. 14, and the rear portion is rotatably supported by the chassis 31. Have been. Then, the front portion of the mechanism unit 32 can be displaced between a raised position (upper position) where the disk 10 is supported on the turntable 321 and a lowered position (lower position) below the raised position. Has become.

More specifically, as shown in FIG. 2, the mechanism unit 32 is supported by a base frame 330 preferably made of a hard resin, and the base frame 330 via an elastic member 450 (insulator). And a holding member 340.

As shown in FIG.
Is formed in a substantially rectangular frame shape having a front portion and a rear portion. The base frame 330 has a rectangular outer frame portion 331 and a substantially rectangular shape which is located inside the outer frame portion 331 and has a size slightly smaller than the outer frame portion 331 and has a corner formed in a C-plane shape. An inner frame portion 332, a connecting portion 333 for integrally connecting the outer frame portion 331 and the inner frame portion 332 substantially at an intermediate position in the height direction, and a predetermined interval over the connecting portion 333 over the entire circumference. The base frame includes a plurality of reinforcing portions 334 provided integrally with each other. As a result, the base frame includes the connecting portion 3 between the outer frame portion 331 and the inner frame portion 332.
It is configured as a so-called ladder frame in which 33 and reinforcing portions 334 are alternately positioned.

As shown in FIG. 16, shafts 335 are formed on both left and right sides behind the base frame 330 (back of the apparatus main body 30) as rotation supporting portions of the mechanism unit 32 with respect to the chassis 31. Have been.
These shafts 335 are inserted into shaft holes 319, 319 formed on the chassis 31 side shown in FIG. Thus, the rear portion of the mechanism unit 32 is rotatably supported by the chassis 31 so as to be rotatable. When the mechanism unit 32 (base frame 330) rotates about the shaft 335, the front part of the mechanism unit 32 is displaced up and down with respect to the chassis 31 between a raised position and a lowered position. Has become.

As shown in FIG. 16, one guide pin 336 protrudes in front of the base frame 330. The guide pin 336 is connected to a cam mechanism 5 described later.
The cam member 572 engages with the cam groove 591 of the cam member 572, and the front portion of the base frame 330 is guided in the vertical direction by the displacement of the cam member 572.

A predetermined gap 337 is formed between the base frame 330 configured as described above and the chassis 31 defining the opening 312, as shown in FIG. The gap 337 is formed over substantially the entire circumference of the base frame 330, and its width is set so that the rotation of the base frame 330 is not hindered even when the chassis 31 is deformed to the maximum.

A tab 338 is provided substantially at the center of the rear portion of the inner frame portion 332 of the base frame 330, and tabs 338 and 338 are provided at the front left and right corners of the inner frame portion 332. . These tabs 338 are provided on the holding member 3.
It is provided to support 40.

As shown in FIG. 17, the holding member 340 includes a substantially rectangular bottom portion 341 and a wall portion 342 formed therearound. As shown in FIG. 2, the wall portion 342 is attached to the base frame 33 such that the wall portion 342 fits within a frame of the base frame 330 with a predetermined gap 344 therebetween.
It is formed in a size one size smaller than the 0 inner frame portion 332.

The holding member 340 is supported by the base frame 330 via elastic members 450 (insulators) provided on the three tabs 338 of the base frame 330, respectively. That is, the holding member 340
Are supported by the base frame 330 via the elastic member 450 at three points forming a substantially isosceles triangle. Thus, the vibration generated by the rotation of the disk 10 and the spindle motor causes the elastic member 450 to rotate.
And is not transmitted to the chassis 31.

As shown in FIG. 19, the holding member 340 includes a turntable rotating spindle motor (not shown), a turntable 321 fixed to a rotary shaft 322 of the spindle motor, and a disk. An optical pickup 351 for reading data from or writing data to the disk 10 and an optical pickup moving mechanism 35 as a slide feed mechanism for moving the optical pickup 351 in the radial direction of the disk 10 are provided.

The spindle motor is mounted on the holding member 3
It is attached to a substrate 440 fixed to 40. Further, as shown in FIGS. 17 and 18, the weight of the holding member 340 is increased at the right front part, the right rear part, and almost the center of the back surface of the holding member 340, thereby causing the rotation of the disk 10 and the spindle motor. A weight 345 for suppressing the vibration of the holding member 340 is provided. FIG. 19 is a top view of the optical pickup moving mechanism 35 according to the disk device of the present invention. FIG. 20 is an enlarged view of an engagement portion provided at the right end of the optical pickup.

The optical pickup moving mechanism 35 is shown in FIG.
As shown in detail in FIG. 9, a forward / reverse rotation thread motor 360 having a rotating shaft 362 having a worm (lead screw) 361 formed with screw-like teeth.
And the worm wheel 36 meshing with the worm 361
3, a small diameter pinion gear 364 integrally formed coaxially with the upper surface of the worm wheel 363, a rack gear 365 meshing with the pinion gear 364, the rack gear 365 is fixed, and the optical pickup 351 is mounted. Pickup base 370 and first guide rod 3 for guiding the movement direction of pickup base 370
71 and a second guide rod 372.

The worm 361, the worm wheel 363, the pinion gear 364, and the rack gear 365 are
Each is made of plastic. As shown in FIG. 19, the rack gear 365 has a structure in which both ends are supported by two bearing portions 373 provided on the pickup base 370.

As shown in FIG. 19, the rack gear 365 is composed of an upper rack gear 366 and a lower rack gear 367 having teeth of the same size, and the upper rack gear 366 is a lower rack gear. 36
7 is attached so as to be movable in the front-rear direction. Further, as shown in FIG. 19, the upper rack gear 366 is urged forward by a coil spring 368 which expands and contracts in the front-rear direction, whereby the teeth provided on the upper rack gear 366 and the lower rack gear The position of the teeth 367 is slightly shifted in the front-rear direction. When the rack gear 365 meshes with the pinion gear 364, regardless of the meshing state of the rack gear 365 and the pinion gear 364, the upper rack gear 366 is connected to the rear teeth of the pinion gear 364 by the lower rack gear 3.
67 reliably comes into contact with the front teeth of the pinion gear 364. And the rack gear 365
The play between the pinion gear 364 and the pinion gear 364 is prevented.

The worm 361, the first guide rod 371, and the second guide rod 372
As shown in FIG. 19, the first guide rod 371 is disposed in parallel with the pickup base such that each longitudinal direction is in the front-rear direction of the disk device 1.
The second guide rod 372 is provided near the right end and the left end of the pickup base 370, respectively.

The combination of the worm 361, the worm wheel 363, the pinion gear 364, and the rack gear 365 forms a reduction gear mechanism in the optical pickup moving mechanism 35, and the rotation of the thread motor 360 causes the optical pickup 351 to move linearly. The optical pickup 351 can reciprocate in the radial direction of the disk 10 by rotating the sled motor 360 in either the forward or reverse direction.

FIGS. 40 and 41 are a right side view and a sectional view showing a main part of a skew adjusting mechanism of the optical pickup according to the disk device of the present invention. 42 and 43 are a top view and a side view of the guide rod pressing spring of the skew adjustment mechanism, and FIGS. 44 to 46 are a top view, a bottom view, and a side view of the guide rod holding member of the skew adjustment mechanism. is there. FIG. 47 is an explanatory diagram showing a procedure for attaching the guide rod holding member of the skew adjusting mechanism according to the disk device of the present invention to the holding member of the mechanism unit.

Hereinafter, the optical pickup 351 will be described with reference to FIG. 19 and FIGS.

As shown in FIG. 19, the optical pickup 351 is a pickup base slidably connected to the first guide rod 371, similarly to the optical pickup 771 used in the above-mentioned conventional disk drive. 3
70. Note that the pickup base 370 is provided with an actuator base, a damper base, and the like, similarly to the conventional disk device 70.

The pickup base 370 is similar to that shown in FIG.
As shown in FIG. 3, the bearing portion 3 having a pair of bearings provided at an interval through which the first guide rod 371 is inserted.
73, and a main body 374 formed integrally with the bearing portion 373 and extending to the left end of the holding member 340 at right angles to the first guide rod 371. The bearing portion 373 and the main body portion 374 are integrally formed from a metal such as die cast.

Although not shown in the drawing, the main body 374 has a laser diode (LD) for emitting a laser beam and directs the beam from the laser diode to a mirror, as in the above-described conventional example. A beam splitter for reflecting the beam from the beam splitter toward the objective lens, and a beam reflected from the disc through the objective lens, the mirror and the beam splitter, and receiving the beam. A photodiode that generates an electric signal based on a change in light intensity.

The outer peripheral surface of the second guide rod 372 is provided on the end of the pickup base 370 opposite to the end on the first guide rod 371 side, that is, on the end on the second guide rod 372 side. There is provided an engagement portion having a substantially U-shaped cross section for supporting the left end of the pickup base 370.

The skew adjustment mechanism of the optical pickup 351 provided on the pickup base 370 will be described below.

The right end and the left end of the pickup base 370 are supported by the first guide rod 371 and the second guide rod 372 as described above.

The skew adjusting mechanism 42 of the disk device of the present invention fixes the first guide rod 371 to the holding member 340 and the second guide rod 372.
Is configured to be able to move up and down with respect to the holding member 340, and the right end of the pickup base 370 is moved to the first position.
The tangential skew of the optical pickup 351 is adjusted by rotating the guide rod 371 about the central axis.

That is, as shown in FIGS. 40 and 41, the skew adjustment mechanism 42
Mounting portion 34 of the holding member 340 to be a frame for supporting
3, a guide rod pressing spring 421 mounted on the mounting portion 343 and pressing the lower side of the peripheral surface of the second guide rod 372, and a guide rod contacting the upper side of the peripheral surface of the second guide rod 372 It has a holding member 430 and a screw 436 screwed to the guide rod holding member 430.

The mounting portion 343 is provided with the holding member 340.
And has an insertion hole 346 at each of the left and right ends for inserting the screw 436.

The guide rod pressing spring 421 is formed of a metal plate, and extends obliquely upward from both ends of the support piece 422 and the longitudinal direction of the support piece 422 as shown in FIGS. And a spring piece 423.

The guide rod holding member 430 is the same as that shown in FIG.
4 to 46, an upper piece 431 having a screw hole 432 to be screwed into the screw 436;
A lower piece 433 having a mounting hole 434 for inserting a tool when mounting the screw 436, and a connecting piece 4 for connecting the upper piece 431 and the lower piece 433.
35, and a vertical U-shaped member.

The procedure for positioning the second guide rod 372 on the holding member 340 using these members will be described below.

First, the support piece 422 of the guide rod pressing spring 421 is mounted on the mounting portion 343, and the second guide rod 372 is mounted on the two spring pieces 423 of the guide rod pressing spring 421. . Next, the guide rod holding member 430 is engaged with the end of the holding member 340, as shown in FIG.

Further, as shown in FIGS. 40 and 41, the screw 436 is screwed into the screw hole 432 of the holding member 430. At this time, the tightening of the screw 436 is adjusted, and the head of the screw 436 and the guide rod holding member 4 are adjusted.
By adjusting the distance between the mounting portion 343 and the peripheral surface of the second guide rod 372, that is, the height of the right end of the pickup base 370, the distance between the mounting portion 343 and the screw hole 432 is changed. Pickup 351
The tangential skew can be adjusted.

As described above, the skew adjusting mechanism 42 of this embodiment has a structure in which the tangential skew of the optical pickup 351 is adjusted by changing the height of the second guide rod 372 with respect to the holding member 340. Therefore, the optical pickup 351 is connected to the first guide rod 371 and the second guide rod 37.
The tangential skew can be easily adjusted even after attaching the skew to the tangential skew.

The operation of the optical pickup moving mechanism 35 will be described below. When the rotation shaft 362 of the thread motor 360 rotates clockwise as viewed from the distal end side, the worm wheel 363 rotates counterclockwise through the worm 361 when viewed from above in the axial direction, and the rack gear 365 is sent backward. As a result, the optical pickup 351
The optical disk moves from the inner circumference to the outer circumference. On the other hand, when the rotation shaft 362 of the thread motor 360 rotates in the opposite direction, that is, counterclockwise, the optical pickup 351 moves from the outer circumference to the inner circumference of the optical disc by the reverse operation. The present invention is not limited to this embodiment, and the worm 361 may be formed with left-handed teeth.

Incidentally, the rotation shaft 362 of the thread motor 360 is provided with a slight play in the axial direction so that the rotation of the rotation shaft 362 can be performed smoothly. The rotation shaft 362 is slightly displaced forward or backward within the range of the play. Therefore, when the thread motor 360 rotates clockwise (in the direction in which the optical pickup 351 moves to the outer peripheral side of the disk) or counterclockwise as viewed from the tip end of the rotating shaft 362, the rotation of the worm wheel 363 causes Rotating shaft 36
2 is displaced such that it is pulled distally (forward) and proximally (rearward) within the range of play.

Therefore, in the present embodiment, the rotation shaft 362 of the thread motor 360 is
In order to prevent movement in the axial direction within the range of play due to the rotation of the rotation shaft 1, the rotation shaft 3
A thrust load pressing mechanism 38 for urging the head 62 from the distal end toward the proximal end is provided.

FIG. 21 is a top view showing the main part of the thrust load pressing mechanism 38 of the optical pickup moving mechanism according to the disk drive of the present invention.

As shown in FIG. 21, the thrust load pressing mechanism 38 includes a pressing member 381 in contact with the distal end of the rotating shaft 362, and a pressing member 381 which is connected to the rotating shaft 362 from the distal end side. Compression spring 400 for pressing to the side
And the pressing member 381 and the compression coil spring 40
And a support member 410 for supporting the C.O.

FIGS. 22 and 23 are a top view and a side view of the pressing member of the thrust load pressing mechanism according to the disk device of the present invention.

The pressurizing member 381 is similar to that shown in FIGS.
3, the front frame 382, the rear frame 383, the left frame 38
5, the right frame 384, and the front frame 382 and the rear frame 38
3 is a substantially rectangular frame having two middle frames 386a, 386b. Movement restricting portions 387a and 387b are provided at rear portions of the front frame 382 and the middle frames 386a and 386b, and a front end of the middle frame 386a is engaged with a rear end of the compression coil spring 400. A sliding surface 390 is provided at the rear portion of the rear frame 383 so that the mating engagement projection 389 comes into contact with the tip of the rotating shaft 362.

The movement restricting portions 387a and 387b are provided along the left frame 385 and the right frame 384, as shown in FIG.
88. The groove 388 engages with the support member 410 described later in detail, and regulates the movement of the pressure member 381.

The engaging projection 389 is provided in FIGS.
As shown in the figure, the front portion of the middle frame 386 extends forward. The engagement projection 389 engages with a center hole at the rear end of the compression coil spring 400 to position the compression coil spring 400. The engagement protrusion 389 is provided so that the center of the rotation shaft 362 and the center axis of the pressing member 381 substantially coincide with the center axis of the engagement protrusion 389. The reason will be described later.

As shown in FIG. 23, the sliding surface 390 is a curved surface protruding rearward from the rear surface of the rear frame 383. Then, the contact area between the sliding surface 390 and the tip of the worm gear 361 becomes as small as possible,
The friction generated on the contact surface is reduced.

As shown in FIG. 19, the compression coil spring 400 is formed by processing a metal wire into a coil shape.
It has a center hole (not shown) at the center in the longitudinal direction.
This center hole engages with an engagement protrusion 389 provided on the pressure member 381 and an engagement protrusion 415 provided on a support member 410 described later. By this engagement, the compression coil spring 400 is positioned by the pressing member 381 and the support member 410.

FIG. 24 is a top view of the support member of the thrust load pressing mechanism according to the disk drive of the present invention. Also,
25 and 26 are sectional views taken along line EE of FIG.
It is an F line sectional view.

The support member 410 is shown in FIGS.
As shown in FIG. 26, the guide part 4 is formed integrally with the bottom part 341 of the holding member 340, and is provided two in front and back, and each of the guide parts 4 has a substantially T-shaped cross section as shown in FIG.
11, 411, an engaging portion 414 located between the two guide portions 411, 411, and support portions 416, 416 located on both left and right sides of the guide portions 411, 411.

The guide part 411 is provided in FIGS.
, The movement restricting portion 3 of the pressing member 381
87 is engaged with the groove 388 formed in the pressing member 3.
A regulating portion 412 for regulating the movement of the pressure member 81 in the left-right direction, and is attached to the upper end of the regulating portion 412 substantially perpendicularly to the regulating portion. And an upper surface portion 413 for restricting the upward movement of the pressure member 381.

As shown in FIG. 24, the engaging portion 414 extends rearward from the rear surface, and engages with the front end of the compression coil spring 400.
Five. The engagement protrusion 415 is connected to the sled motor 3 whose center axis is fixed to the holding member 340.
It is provided so as to substantially coincide with the central axis of the 60 rotation shaft 362. The reason will be described later.

As shown in FIGS. 24 to 26, each of the support portions 416 and 416 has a sliding surface on its upper surface, and the left frame of the pressing member 381 in contact with these sliding surfaces. 385 and the lower surface of the right frame 386 are slidable in the front-rear direction along the sliding surface.

The rotation shaft 362 of the thread motor 360 is arranged so as to substantially coincide with the center lines of the pressing member 381 and the compression coil spring 400. The center line of the engaging protrusion 389 of the pressing member 381 is provided so as to substantially coincide with the center line of the pressing member 381.
The center axis of the engagement protrusion 415 of the thread motor 3
Since the rotation shaft 362 is provided so as to substantially coincide with the center axis of the rotation shaft 362, the rotation shaft 362, the center line of the pressing member 381, and the center line of the compression coil spring 400 substantially match. It has become.

Since only the axial component of the restoring force of the compression coil spring 400 is transmitted to the rotation shaft 362 of the thread motor 360, rattling when the optical pickup 351 moves can be prevented. The smooth operation of the pickup 351 can be realized, and the accuracy of the thrust load applied to the rotating shaft 362 can be improved.

The optical pickup 351 is moved in the radial direction of the disk 10 by the optical pickup moving mechanism 35 described above. This optical pickup 351 is
Is a horizontal optical pickup having a configuration in which the reflected light from the light is bent at a substantially right angle by a mirror (or prism) or the like and guided to a light receiving element, and an objective lens and an actuator (not shown)
have.

The above-described optical pickup moving mechanism 3
The thread motor 360 of No. 5 is controlled by control means provided on a printed circuit board together with the spindle motor and a loading motor 601 described later.

As shown in FIG. 2, the mechanism unit 32
The mechanism unit 32 is moved downward (FIG. 27).
(A) and a loading drive mechanism 57 for displacing between the raised position (see FIG. 27 (b)) and transporting the disc tray 51 is provided.

The loading drive mechanism 57 includes a cam mechanism 57 provided so as to interlock with the mechanism unit 32.
1, a drive mechanism 60 for driving the cam mechanism 571 and the disc tray 51, a disc tray position detection mechanism 670 and an emergency discharge mechanism 56 interlocked with the cam mechanism 571.

FIGS. 27A and 27B are top views showing the loading drive mechanism and the cam member of the cam mechanism according to the present invention in the first position and the second position, respectively. FIGS. 28 (a) to 28 (c)
FIG. 3 is a top view, a front view, and a left side view of the cam member.

The cam mechanism 571 moves the mechanism unit 32 to the lowered position in the first position shown in FIG. 27A, and moves the mechanism unit 3 in the second position shown in FIG.
2 is positioned at a raised position, whereby the turntable 321 is moved up and down.

More specifically, the cam mechanism 57
1, as shown in FIGS. 27A and 27B, the cam member 572 is located on the left side of the chassis 31 in the left-right direction (the direction orthogonal to the moving direction of the disc tray 51) with respect to the chassis 31. A first position (FIG. 27A);
It has a cam member 572 slidably provided between a second position (FIG. 27B) located on the right side.

This cam member 572 is made of resin, and as shown in FIGS. 28A to 28C, a rack gear 581, a first projection 582, and a second projection 583.
An upper portion 580 having an upper portion formed therein, and a cam groove 591 and the cam member 572 which are provided substantially perpendicularly to the lower surface of the upper portion 580 from the rear end of the upper portion to move the mechanism unit 32 up and down. And a lower portion 590 having a mounting portion 597 for mounting on the chassis 31.

As shown in FIG. 28 (a), a rack gear 581 and a first projection 58
2 and the second protrusion 583 are formed to extend forward.

As shown in FIGS. 28A and 28B, the rack gear 581 is provided substantially linearly in the left-right direction from the right end of the upper portion 580, and is provided on a gear arm 650 described later. It meshes with the gear portion 653 and converts the rotational movement of the gear arm 650 into a horizontal linear movement of the cam member 572.

The first projection 582 and the second projection 583 are connected to the upper part 5 as shown in FIG.
The front portion 80 extends forward from substantially the center and left end of the front surface.

[0130] The first projection 582 is
When the 72 moves from the second position to the first position, it contacts the slider 680 described later, and moves the slider to the left side of the chassis 31.

When the cam member 572 moves from the first position to the second position, the second protrusion 583 presses a detection lever 673 of a disc tray position detection switch 671 described below. By pressing an emergency cam 562 described later, the cam member 57 is pressed.
2 for moving the second member 2 from the second position to the first position, that is, from the right side to the left side of the chassis 31.

As shown in FIG. 28B, a cam groove 591 for guiding the guide pin 336 provided in the mechanism unit 32 and the cam member 572 are formed in the lower portion 590. 2 for attaching to 31
Two attachment portions 597, 597 are provided.

When the cam groove 591 is mounted on the chassis 31, the upper groove 592 located on the left side of the chassis 31 and the right side of the chassis 31 are open at the right end. It has a lower groove 593, an inclined groove 594 connecting these two, and a gap 595 connected to an end of the upper groove 592. The upper groove 592
The lower surface of the inclined groove 594 is
5 is an upper surface of the elastic portion 596 formed by providing the elastic member 5 and is capable of being displaced up and down. Thus, the mechanism unit 32 is smoothly guided up and down by the cam member 572.

A guide pin (driven member) 336 provided on the front surface of the base frame 330 of the mechanism unit 32 described above is inserted into the cam groove 591. The guide pin 336 slides along the cam groove 591 with the movement of the cam member 572 between the first position and the second position, and moves up and down.

That is, when the cam member 572 is located at the first position, the guide pin 336 is engaged with the lower groove 593 (FIG. 29A), and the front part of the mechanism unit 32 is located at the lowered position. When the cam member 572 moves from the first position to the second position, the guide pin 336 rises along the inclined groove 594, and accordingly, the front part of the mechanism unit 32 moves from the lowered position to the raised position. Lifted. When the cam member 572 reaches the second position, the guide pin 336 engages with the upper groove 592 (FIG. 29B), and the front part of the mechanism unit 32 is displaced to the raised position.

As shown in FIG. 28 (b), the mounting portions 597 are provided one by one on the left and right sides of the front surface of the lower portion 590, and as shown in FIG. Are formed so as to have a hook shape. These mounting portions 597 are formed by two rails 317 (FIG. 1) having a substantially T-shaped vertical cross section formed in front of the opening 312 of the chassis 31.
4 and 15).
72 is attached to the chassis 31 and guided in the left-right direction of the chassis 31.

The disc tray position detecting mechanism 6
70 presses a disc tray position detection switch 671 described later by a first projection 582 and a second projection 583 provided on an upper portion 580 of the cam member 572 and a slider 680 sliding on the chassis 31. And
Thereby, the position of the disc tray 51 is detected.

FIGS. 30A and 30B are front and side views of the disc tray position detecting switch, respectively, and FIGS. 31A and 31B are diagrams in which the detecting lever of the disc tray position detecting switch is on the left side, respectively. And FIG.

The disk tray position detection switch 67
As shown in FIGS. 30A and 30B, reference numeral 1 denotes a support portion 672 and a detection lever 6 attached to the support portion 672.
73. The detection lever 673 is attached to a center shaft 674 of the support portion 672 so as to be rotatable left and right about the center shaft 674. When no external force is applied to the detection lever 673, the detection lever 673 is substantially perpendicular to the upper surface of the support portion 672 as shown in FIG. It is urged by a spring. In this state, a first contact and a second contact, which will be described later, are turned off.

When an external force is applied from the left side, the detection lever 673 tilts to the right side as shown in FIG. 31 (a) and turns on the first contact. In addition, when an external force is applied from the right side, as shown in FIG. 31 (b), it is tilted to the left and the second contact is turned on. Note that the first contact and the second contact are
When the disk tray 51 is turned on, one of them indicates that the disk tray 51 has reached the loading position, and the other indicates that the disk tray 51 has reached the discharging position. (Not shown).

FIGS. 32A to 32C are a top view, a front view, and a side view of the slider of the disk tray position detecting mechanism according to the disk device of the present invention, respectively.

The slider 680 is made of resin, and has a plate-shaped main body 681 and a pressing member extending upward from the upper surface of the main body 681 as shown in FIGS. 32 (a) to 32 (c). A piece 682, a projecting opening 683 for projecting the detection lever 673 of the disc tray position detection switch 671, and a mounting section 684 having a substantially T-shaped vertical section extending downward from the lower surface of the main body 681. are doing. When the disc tray 51 is loaded, the pressing piece 682 uses the leftward force transmitted from the cam member movement restricting rib 520 provided at the rear of the lower surface of the disc tray 51 so that the disc tray 51 The position detection switch 671 is pressed to the left. The mounting piece 68
4 engages with a slide groove 318 (see FIG. 14) provided in the chassis 31 to guide the slider 680 in the left-right direction of the chassis 31.

Hereinafter, the disc tray position detecting mechanism 6
The operation of 70 will be described. When the cam member 572 is at the first position (FIG. 27A), that is, when the disc tray 51 is at the ejection position, the pressing piece 682 of the slider 680 is
The slider 680 presses the detection lever 673 of the disk tray position detection switch 671 to the left by the slider movement restricting rib 520. In this state, the first contact of the disc tray position detection switch 671 is turned on, thereby detecting that the disc tray 51 is at the ejection position.

In this state, when the disk tray 51 is moved backward by the loading operation of the disk tray, the slider 680 pressed to the left by the slider movement restricting rib 520 moves to the detection lever of the disk tray position detection switch 671. It moves to the right due to the restoring force of 673.

Further, when the cam member 572 moves from the first position to the second position as the disc tray 51 moves rearward, the upper portion 5 of the cam member 572 moves upward.
The second protrusion 583 provided at 80 presses the detection lever 673 of the disc tray position detection switch 671 to the right. Then, the second contact is turned on by this pressing, and it is detected that the disc tray 51 is at the loading position.

When the disc tray 51 moves forward from this state, the cam member 572 moves from the second position to the first position with this movement. Then, at this time, the second protrusion 583 moves to the left, and the disc tray position detection switch 671 pressed leftward by the second protrusion 583 is moved by the restoring force of the spring as shown in FIG. At the same time as returning to the state of (a), the slider 680 moves to a predetermined position in the left direction by the first projection 582.

Further, the disc tray 51 moves forward, and the front guide slope 5 of the disc tray movement regulating rib 561 provided on the lower surface of the disc tray 51.
When the slider 21 contacts the pressing piece 682 of the slider 680, the slider 680 moves to the left. That is, since the front guide slope 521 is inclined leftward from the longitudinal direction of the disc tray 51 as shown in FIG. 12, the pressing piece 682 moves leftward along the front guide slope 521. Moving. When the slider 680 moves to the left, the detection lever 673 of the disc tray position detection switch 671 is pressed to the left, the first contact turns on, and the ejection position of the disc tray 51 is detected.

As described above, the disc tray position detecting mechanism of this embodiment has a structure in which the displacement of the cam member is not used to detect the ejection position of the disc unlike the conventional disc device. The rear portion of the guide groove of the disc tray engaging with the pin can be formed linearly. Therefore, unlike the conventional disk tray in which a curve is used at the rear of the guide groove of the disk tray, there is no possibility that the movement of the disk tray may be disturbed due to the locking of the pin of the cam member and the guide groove. Can smoothly load the disc tray into the main body.

The above-mentioned loading drive mechanism 57 is
As shown in (a) and (b), a loading motor 601 which is a forward / reverse rotatable DC motor provided on the back surface of the front part of the chassis 31 and a rotating shaft 602 of the loading motor 601 are attached. The pinion gear 610 is rotatably provided on a first rotating shaft 314 integrally formed with the chassis 31.
10. A first gear 630 having a large gear 631 meshing with the first gear 10 and a small gear coaxially fixed on the upper part of the large gear 631.
And the first rotating shaft 314 together with the first gear 630.
And the rack gear 5 of the cam member 572
81 and a second gear 640 to be described later.
A gear arm 650 having a second rotating shaft 315 for rotatably mounting the first gear 63 is attached to a second rotating shaft 315 integrally formed with the gear arm 650.
A lower gear 643 having a middle diameter meshing with the small gear 632 of 0, and a second gear 640 integrally formed coaxially with the lower gear 643 and having an upper gear 641 smaller in diameter than the lower gear 643. are doing.

FIGS. 33A and 33B are a top view and a side view of a pinion gear of a loading drive mechanism according to the disk drive of the present invention. FIG. 34 is an enlarged perspective view of a main part of the pinion gear.

The pinion gear 610 is a drive gear for transmitting the torque of the loading motor 601 to the large gear 631 of the first gear 630, and has a substantially cylindrical shape as shown in FIGS. 33 (a) and 33 (b). The main body 61
1 and a plurality of teeth 612 provided on the outer peripheral surface of the main body 611 and having two opposing contact surfaces 613 and 613.

The teeth 612 correspond to FIG. 33 (b) and FIG.
As shown in FIG. 4, the two opposing contact surfaces 613, 6
13, a guide surface 614 formed continuously on the upper end of each of
614.

The guide surfaces 614, 614 are provided for guiding the teeth of the large gear 631, which is the other gear engaged with the pinion gear 610, and are shown in FIG.
As shown in (b), the two contact surfaces 613, 613
, So that the ends of the teeth of the large gear 631 are smoothly guided from the guide surfaces 614, 614 to the contact surfaces 613, 613.

As shown in FIG. 34, the ends of the guide surfaces 614, 614 on the central axis side are connected between the guide surfaces 614, 614, and the large gear 631 is connected to the pinion gear 610. At the time of attachment, a guide groove 615 for guiding the teeth of the large gear 631 is provided.

Further, a chamfered portion 616 is provided at each end of the teeth 612 so as to form an acute angle with the outer peripheral surface of the main body 611. The chamfer 616
Is the large gear 6 meshed with the pinion gear 610.
This is to prevent projections such as burrs at the end of the gear 31 and prevent obstacles such as breakage and rotation failure of both gears.

In the present embodiment, the guide surface 61
4. Although the chamfered portion 616 is formed by a flat surface, the present invention is not limited to this embodiment, and these surfaces may be formed by curved surfaces. Also, since the pinion gear 610 is formed of a material having a higher hardness than the large gear 631, the large gear 631 is connected to the pinion gear 610.
When the gears are meshed with each other, breakage due to projections such as burrs generated at the ends of the large gear 631 is less likely to occur.

When the pinion gear 610 is engaged with the large gear 631, the large gear 631 is inserted through the first rotating shaft 314 because the pinion gear 610 is fixed to the loading motor 601. And
By moving the rotating shaft 314 downward along the central axis thereof, the large gear 6 moves relative to the pinion gear 610.
31 is engaged.

In this embodiment, the guide surface 614, the guide groove 615, and the chamfer 616 are provided at the end of the pinion gear 610, but may be provided at the end of the large gear 631.

The first gear 630 and the gear arm 65
0 is provided on the first rotation shaft 314 as shown in FIGS.

FIGS. 35 and 36 are a top view and a side view of the first rotating shaft of the loading drive mechanism according to the disk drive of the present invention.

The first rotating shaft 314 is provided in each of FIGS.
As shown in FIG. 5, the rotating shaft 621 has a small-diameter upper rotating shaft 621 and a large-diameter lower rotating shaft 622 located below the upper rotating shaft 621. A support surface 6 for supporting the gear arm 650 attached to the upper rotation shaft 621 is provided between the upper rotation shaft 621 and the lower rotation shaft 622.
23a is provided. Also, the lower rotation shaft 622
A support surface 623b that supports the first gear 630 attached to the lower rotation shaft 622 is provided at a lower portion of the lower rotation shaft 622.

On the other hand, the first gear 630 is provided with a center hole having substantially the same diameter as the lower rotation shaft 622.
As shown in FIG. 37, the upper rotating shaft 621
And a center hole 652 having substantially the same diameter as the center hole 652. And
Since the first gear 630 is supported on the support surface 623b and the gear arm 650 is supported on the support surface 623a, the first gear 630 attached to the first rotation shaft 314, The gear arm 650 can rotate smoothly without contacting or interfering with each other when rotating.

FIG. 37 is a bottom view of the gear arm of the loading drive mechanism according to the disk drive of the present invention. FIG. 38 is a sectional view taken along line GG of FIG.

The gear arm 650 is formed of a plastic, as shown in FIGS. 37 and 38, is formed substantially in a disk shape, and has a main body 651 having a protruding portion 654 on the outer peripheral portion, and the first rotating shaft. A center hole 652 for attaching the main body 651 to the first rotation shaft 314 with the center of rotation 314 as a center of rotation, and the protrusion 654 is opposed to the center hole 652 with the center hole 652 interposed therebetween. A gear portion 653 provided in an arc shape on a lower surface of the gear 651;
A second rotation shaft 315 extending substantially vertically from the upper surface of the protrusion 654.

Also, the center hole 65 of the main body 651
A lower portion of the housing 2 has a housing 664 for housing a small gear located above the first gear 630, and a small gear projecting opening for projecting the small gear from the housing 664 to the upper surface of the main body 651. 663 are provided.

The second rotating shaft 315 is connected to the second gear 6
A shaft portion 661 for attaching the shaft 40;
The guide groove 55 of the disc tray 51
0, and has a pin portion 662 for rotating the gear arm 650 by the guide of the guide groove 550.

In the present embodiment, each of these gears is constituted by a spur gear, and all the rotating shafts have a positional relationship parallel to each other. The combination of these gears constitutes a speed reduction mechanism of the loading motor 601 in the loading drive mechanism 57.

In the present embodiment, the guide surface 614 is a flat surface. However, the present invention is not limited to this embodiment, and may be a curved surface. Further, in this embodiment, spur gears are used as the respective gears. However, the present invention is not limited to this embodiment, and other gears such as bevel gears can be used.

FIGS. 39 (a) and (b) show, respectively,
It is the top view and side view of the 2nd gear of the loading drive mechanism concerning the disk device of the present invention.

The second gear 640 is formed of plastic, and as shown in FIGS. 39 (a) and (b), the lower gear 643 of a medium diameter meshing with the small gear 632 of the first gear 630. And an upper gear 641 integrally formed coaxially with the lower gear 643 and having a smaller diameter than the lower gear 643.

On the upper surface of the upper gear 641, FIG.
As shown in (a) and (b), a ring-shaped contact portion 642 that protrudes upward from the upper surface of the upper gear 641 is provided.

The contact portion 642 has a second gear 640 attached to the second rotation shaft 315 of the gear arm 650, and a pin 662 of the second rotation shaft 315 of the gear arm 650 guides the disc tray 51. Groove 550
When it is engaged with the guide groove 550, it faces the end face of the guide groove 550. When the second gear 640 moves upward, the contact portion 642 abuts on the end face of the guide groove 550, and the second gear 640 is prevented from being detached from the second rotation shaft 315. It has become.

As described above, the disk device 1 of the present embodiment
Since the rack gear 540 and the guide groove 550 of the disc tray 51 are arranged in parallel, the second gear 640 meshed and engaged with the rack gear 540 and the guide groove 550 and the gear arm 650 The disc tray 51 is smoothly linked to each other, so that the manual movement of the disc tray 51 can be smoothly performed.

The upper surface 642 of the second gear 640 and the end face of the guide groove 550 of the disc tray 51 face each other, and when the second gear 640 moves upward, the end face of the guide groove 550 causes The movement is restricted, and the second gear 640 can be prevented from being detached from the second rotation shaft 315 without providing a fixing means such as a screw at the upper end of the second rotation shaft 315. As a result, a loading drive mechanism with a small number of parts and an easy mounting operation is realized.

Further, at the lower end of the lower gear 643,
Like the pinion gear 610, a guide surface, a guide groove, and a chamfer (not shown) are provided.
3 can smoothly mesh with the small gear 632 of the first gear 630.

The second gear 640 is a planetary gear that rolls along the rack gear 540 of the disk tray 51 using the first rotation shaft 314 as a revolving shaft, the second rotation shaft 315 as a rotation shaft, and the rotation shaft. The small gear of the first gear 630 functions as a sun gear.

Also, the main body 65 of the gear arm 650 is provided.
37, a small gear projecting opening 663 for projecting the small gear 632 to the upper surface of the main body 651 is provided on the upper surface of the first gear 630, as shown in FIGS. Are exposed from the small gear projection 663, and mesh with the lower gear 643 of the second gear 640 at that portion.

With the above configuration, the upper gear 641 of the second gear 640 and the linear rack gear 541 of the disc tray 51 engage with each other.
When the pin portion 662 of the gear arm 650 is engaged with the linear guide groove 551 of the disc tray 51, as shown in FIGS. 27 (a) and 29 (a), the gear portion of the gear arm 650 is engaged. The cam member 572 engaged with the gear 653 is located at the first position by the guidance of the gear arm 650, and the disc tray 51 is moved to the second gear 640.
Is transported from the disk discharge position to the disk loading position by the rotation of.

Also, the upper gear 64 of the second gear 640
1 and the arc-shaped rack gear 5 of the disc tray 51
42 and the pin portion 662 of the gear arm 650 and the arc-shaped guide groove 5 of the disc tray 51.
52 (b) and FIG. 27 (b).
As shown in FIG. 9B, by the guide of the gear arm 650 and the second gear 640, the cam member 572 engaged with the gear portion 653 of the gear arm 650 moves from the first position to the second position.

More specifically, as described above,
The cam member 572 keeps the pin portion 662 of the second rotating shaft 315 of the gear arm 650 in the linear guide groove of the disc tray 51 while the disc tray 51 moves between the disc ejection position and the disc loading position. 551
And the gear arm 650 cannot rotate. Therefore, the second gear 640 is held at the first position while the pin portion 662 of the gear arm 650 is engaged with the linear guide groove 551 of the disc tray 51. In this state, the second gear 640 is connected to the linear rack gear 541 of the disc tray 51 as shown in FIGS. 27 (a) and 29 (a).
The drive gear of the disc tray 51 that moves the disc tray 51 between a disc ejection position and a disc loading position by the rotation of the loading motor 601 transmitted via the first gear 630. Function as

On the other hand, when the disc tray 51 moves to just before the disc loading position, the pin portion 662 of the second rotation shaft 315 of the gear arm 650 engages with the arc-shaped guide groove 552 of the disc tray 51, and Guide groove 5
The gear arm 650 rotates along the arc of 52.
In this state, as shown by a dotted line in FIGS. 27B and 29B, the second gear 640 is engaged with the arc-shaped rack gear 542 of the disk tray 51,
It functions as a planetary gear that moves along the arc of the arc-shaped rack gear 542 as the loading motor 601 rotates. And, with the rotation of the gear arm 650,
The cam member 572 engaged with the gear portion 653 of the gear arm 650 moves rightward by the guidance of the gear arm 650, and the mechanism unit engaged with the cam groove 591 of the cam member 572 with the movement. 32 rises from the lowered position to the raised position.

The above-described disk device 1 further includes
Has a disc tray emergency discharge mechanism indicated by reference numeral 56. The disc tray emergency discharge mechanism 56 is provided with the disc tray 51.
When the loading motor 601 stops operating due to a power failure or the like in a state where is located at the playback position, a jig is inserted from the jig insertion hole 481 of the front bezel 46 and the emergency cam 562 is rotated. 27A and 27B, the cam member 572 is moved from the second position to the first position, thereby discharging the tip of the disc tray 51 from the inside of the apparatus main body 30 to the outside. It is.

Next, the operation of the disk drive 1 of the present invention will be described. When the disk device 1 is not used, the empty disk tray 51 is in a state (disk loading position) housed in the casing 20 (in the apparatus main body 30). In this state, the mechanism unit 32 is in the raised position, and the cam member 572 is moved to the position shown in FIGS.
It is in the second position shown in FIG. Further, the second gear 640 of the loading drive mechanism 57 is engaged with the arc-shaped rack gear 542 at the left end of the arc-shaped rack gear 542 of the disc tray 51.

When an eject operation is performed in this state, the loading motor 601 rotates clockwise, and the gear arm 650 and the second gear 6
Reference numeral 40 rotates clockwise around the first rotation shaft 314 in the drawing. In this state, the second gear 640 is connected to the first gear 640.
It functions as a planetary gear having the rotating shaft 314 as a revolving shaft, and moves rightward along the arc of the arc-shaped rack gear 542 with its rotation. According to the rotation of the gear arm 650, the cam member 572 meshed with the gear portion 653 of the gear arm 650 moves as shown in FIGS. 27 (b) and 29 (b).
From the second position shown in FIG. 27A to the first position shown in FIGS.
Also moves from the raised position to the lowered position.

At this point, the second gear 640 and the pin portion 662 of the second gear 640 are
Are moved from the arc-shaped rack gear 542 and the arc-shaped guide groove 552 to the linear rack gear 541 and the linear guide groove 551. Thus, when the pin portion 662 moves to the linear guide groove 551, the cam member 572 is restricted from moving in the lateral direction. In addition, the gear arm 650 cannot rotate as well, and the second gear 640
Operates as a drive gear of the disc tray 51 at that position. Therefore, the second gear 640 engages with the linear rack gear 541 of the disk tray 51 to move the disk tray 51 from the disk loading position (reproduction position) to the disk discharge position.

When the disc 10 is placed on the disc placing portion 511 of the disc tray 51 drawn out of the opening 463 of the front bezel 46 and a loading operation is performed, the loading motor 601 is turned in the opposite direction.
That is, it rotates counterclockwise, and the second gear 640 rotates counterclockwise in FIG. 27A (reverse rotation) via the above-described reduction mechanism. Accordingly, the disc tray 5
1 moves backward (to the rear of the apparatus main body 30) and moves to the disk loading position. Thereby, the disk tray 5
Disk 10 placed in a state positioned on 1
Is also transported to the disk loading position (reproduction position) in the apparatus main body 30.

The second gear 640 is engaged with the linear rack gear 541 of the disc tray 51 during the loading of the disc tray 51, that is, during the backward movement. Therefore, the cam member 572 is held at the first position and cannot move toward the second position.
As a result, the gear arm 650 also cannot be rotated and is held at a predetermined position, and the second gear 640 rotates at the predetermined position and functions as a drive gear for the disc tray 51. And the mechanism unit 32
The front part is maintained in the lowered position.

When the disc tray 51 approaches the disc reproducing position, the pin portion 66 of the gear arm 650 is moved.
2, the second gear 640 is connected to the linear guide groove 551 and the linear rack gear 541 to the arc guide groove 55;
2. Move to the arc-shaped rack gear 542, and rotate along the arc of the arc-shaped guide groove 552 and the arc-shaped rack gear 542. In this state, the second gear 6
40 is an arc-shaped rack gear 54 of the disc tray 51
2 and functions as a planetary gear that moves along the arc of the arc-shaped rack gear 542 as the loading motor 601 rotates. Then, with the rotation of the gear arm 650, the cam member 572 meshing with the gear portion 653 of the gear arm 650 moves leftward by the guidance of the gear arm 650, and the cam of the cam member 572 moves with the movement. The mechanism unit 32 engaged with the groove 591 rises from the lowered position to the raised position.

When the optical disk 10 loaded in the disk device 1 is taken out, a predetermined switch or the like is operated to unload (eject) the optical disk. At the time of this unloading, the above operation is performed in reverse.

The embodiments of the disk device of the present invention have been described above. However, the present invention is not limited to the above embodiments, and various improvements and modifications can be made within the scope described in the claims. It is. The present invention also provides a CD,
It goes without saying that the present invention can be applied not only to an optical disk device such as a DVD but also to other optical disk devices, magnetic disk devices and the like.

[0191]

As described above, according to the skew adjusting mechanism of the present invention, the skew of the optical pickup is adjusted by changing the height of the second guide rod with respect to the holding member. The skew can be easily adjusted even after the pickup is attached to the first guide rod and the second guide rod.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an overall configuration of a disk drive according to the present invention.

FIG. 2 is a top view of an apparatus main body of the disk device according to the present invention.

FIG. 3 is a front view of a front bezel according to the disk drive of the present invention.

FIG. 4 is a sectional view taken along line AA of FIG. 3;

FIGS. 5A and 5B are enlarged views of a concave portion and a guide groove portion of a front bezel according to the disk device of the present invention, respectively.

FIGS. 6 (a) and 6 (b) are FIGS.
It is the BB line sectional view and the CC sectional view taken on the line of (a) and (b).

FIG. 7 is a front view of a shutter according to the disk device of the present invention.

FIG. 8 is a right side view of a shutter according to the disk device of the present invention.

FIG. 9 is an enlarged view of a shaft portion of a shutter according to the disk device of the present invention.

FIG. 10 is an explanatory diagram showing a positional relationship between the shutters according to the disk device of the present invention when the shutters are mounted on a front bezel.

FIG. 11 is a top view of a disk tray according to the disk device of the present invention.

FIG. 12 is a bottom view of a disk tray according to the disk device of the present invention.

13 (a) is a sectional view taken along the line DD in FIG. 11, and FIG. 13 (b) shows a state where the lower surface of the disk is in contact with the guide slope of the disk tray of FIG. 13 (a). FIG.

FIG. 14 is a top view of a chassis according to the disk drive of the present invention.

FIG. 15 is a longitudinal sectional view of the vicinity of a rail provided on a chassis according to the disk drive of the present invention.

FIG. 16 is a top view of a base frame of a mechanism unit according to the disk drive of the present invention.

FIG. 17 is a top view of a holding member of a mechanism unit according to the disk drive of the present invention.

FIG. 18 is a bottom view of the holding member according to the disk device of the present invention.

FIG. 19 is a top view of an optical pickup moving mechanism according to the disk device of the present invention.

FIG. 20 is an enlarged view of an engaging portion provided at the right end of the optical pickup base according to the disk device of the present invention.

FIG. 21 is a top view showing a main part of a thrust load pressing mechanism of the optical pickup moving mechanism of the disk device of the present invention.

FIG. 22 is a top view of a pressing member of a thrust load pressing mechanism according to the disk device of the present invention.

FIG. 23 is a side view of a pressing member of a thrust load pressing mechanism according to the disk device of the present invention.

FIG. 24 is a top view of a support member of the thrust load pressing mechanism according to the disk device of the present invention.

FIG. 25 is a sectional view taken along line EE of FIG. 24;

FIG. 26 is a sectional view taken along line FF of FIG. 24;

FIGS. 27A and 27B are top views showing a state where the cam members of the loading drive mechanism and the cam mechanism according to the disk device of the present invention are at the first position and the second position, respectively. .

FIGS. 28 (a) to (c) are a top view, a front view, and a right side view of a cam member of a cam mechanism according to the disk device of the present invention, respectively.

29 (a) and 29 (b) are front views showing main parts of a loading drive mechanism and a cam mechanism according to the disk device of the present invention, respectively.

FIGS. 30A and 30B are a front view and a side view of a disk tray position detection switch of the disk tray position detection mechanism according to the disk device of the present invention.

FIGS. 31A and 31B are front views showing a state where a detection lever of a disk tray position detection switch according to the disk device of the present invention is tilted left and right.

FIGS. 32A to 32C are a top view, a front view, and a side view of a slider of the disk tray position detecting mechanism according to the disk drive of the present invention, respectively.

FIGS. 33 (a) and (b) are a top view and a side view of a pinion gear of a loading drive mechanism according to the disk drive of the present invention.

FIG. 34 is an enlarged perspective view of a main part of a pinion gear of a loading drive mechanism according to the disk drive of the present invention.

FIG. 35 is a top view of a first rotation shaft of the loading drive mechanism according to the disk device of the present invention.

FIG. 36 is a side view of the first rotation shaft of the loading drive mechanism according to the disk device of the present invention.

FIG. 37 is a bottom view of the gear arm of the loading drive mechanism according to the disk drive of the present invention.

38 is a sectional view taken along line GG of FIG. 37.

FIGS. 39 (a) and 39 (b) respectively show a second example of the loading drive mechanism according to the disk drive of the present invention.
It is the top view and side view of a gear.

FIG. 40 is a right side view showing a main part of a skew adjusting mechanism of the optical pickup according to the disk device of the present invention.

FIG. 41 is a sectional view showing a main part of a skew adjusting mechanism of the optical pickup according to the disk device of the present invention.

FIG. 42 is a top view of a guide rod pressing spring of the skew adjusting mechanism according to the disk device of the present invention.

FIG. 43 is a side view of a guide rod pressing spring of the skew adjusting mechanism according to the disk device of the present invention.

FIG. 44 is a top view of a guide rod holding member of the skew adjustment mechanism according to the disk device of the present invention.

FIG. 45 is a bottom view of the guide rod holding member of the skew adjustment mechanism according to the disk device of the present invention.

FIG. 46 is a side view of a guide rod holding member of the skew adjustment mechanism according to the disk device of the present invention.

FIG. 47 is an explanatory view showing a procedure for attaching the guide rod holding member of the skew adjustment mechanism to the holding member of the mechanism unit according to the disk device of the present invention.

FIG. 48 is a front view of a front bezel of a conventional disk device.

FIG. 49 is a front view of a shutter of the conventional disk device.

FIG. 50 (a) is a top view of a shutter of a conventional disk device, and FIG. 50 (b) schematically shows an external force applied when the shutter is mounted on a front bezel by arrows. It is a top view.

FIG. 51 is a bottom view of a disk tray of a conventional disk device.

FIG. 52 is a top view of a disk tray of a conventional disk device.

FIGS. 53 (a) and 53 (b) show a state in which a cam member of a disk tray position detecting mechanism provided in a device body of a conventional disk device is at a first position and a second position, respectively. FIG.

FIG. 54 is a sectional view taken along line HH of FIG. 52.

FIG. 55 is an explanatory diagram showing a state where a disk is placed on the disk tray of FIG. 54;

FIG. 56 is an exploded perspective view showing an example of a pickup base of a conventional disk device.

FIGS. 57 (a) and (b) are a top view and a side view, respectively, of a conventional drive gear.

FIG. 58 is an explanatory diagram showing a positional relationship between conventional drive gears when the drive gears are attached to a counterpart gear.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Disk device 10 Disk 101 Lower surface 102 Outer edge 103 Outer peripheral surface 20 Casing 30 Device main body 31 Chassis 311 Bottom 312 Opening 313 Wall 314 First rotating shaft 315 Second rotating shaft 316 Disk tray lock portion 317 Rail 318 Sliding groove 319 Shaft Hole 32 Mechanism unit 321 Turntable 322 Rotation shaft 323 Guide member 330 Base frame 331 Outer frame 332 Inner frame 333 Connection 334 Reinforcement 335 Axis 336 Guide pin 337 Gap 338 Tab 340 Holding member 341 Bottom portion 342 Wall mounting portion 343 344 Gap 345 Weight 346 Insertion hole 35 Optical pick-up moving mechanism 351 Optical pick-up 360 Thread motor 361 Worm 362 Rotation shaft 363 Worm wheel 364 Pinion gear 3 65 Rack gear 366 Upper rack gear 367 Lower rack gear 368 Coil spring 370 Pickup base 371 First guide rod 372 Second guide rod 373 Bearing part 374 Body part 38 Thrust load pressing mechanism 381 Pressurizing member 382 Front frame 383 Rear frame 384 Right frame 385 Left frame 386a, 386b Middle frame 387a, 387b Movement regulation part 388 Groove part 389 Engagement projection 390 Sliding surface 400 Compression coil spring 410 Support member 411 Guide part 412 Regulation part 413 Top surface part 414 Engagement part 415 Engagement projection 416 Support part 42 Skew adjustment mechanism 421 Guide rod pressing spring 422 Support piece 423 Spring piece 430 Guide rod holding member 431 Upper piece 432 Screw hole 433 Lower piece 434 Mounting hole 435 Connection piece 436 Screw 440 Board 4 0 Elastic member 46 Front bezel 461 Front surface 462 Rear surface 463 Opening 464a, 464b Edge 470a, 470b Concave portion 471a, 471b Guide groove 472 Front part 473 Rear part 474a, 474b Connection surface part 475 Slant surface 480 Eject button 480 Eject button 480 491a, 491b Shaft portion 492a, 491b Flat portion 493a, 493b Circumference portion 500 Top surface 501 Lower surface 502 Front surface 503 Rear surface 51 Disk tray 511 Disk mounting portion 512 Guide inclined surface 513 Inner wall surface 514 Support surface 515 Disk detachment preventing member 516 Opening 518 Lower surface 519 Mounting hole 520 Slider movement restricting rib 521 Front guide slope 522 Rear guide slope 530L, 530R Guide groove 540 Rack gear 541 Linear latch Claw gear 542 Arc-shaped rack gear 550 Guide groove 551 Linear guide groove 552 Arc-shaped guide groove 56 Emergency ejection mechanism 560 Emergency ejection mechanism rib 561 Disk tray movement regulation rib 562 Emergency cam 57 Loading drive mechanism 571 Cam mechanism 572 Cam member 580 Upper part 581 Rack gear 582 First protrusion 583 Second protrusion 590 Lower part 591 Cam groove 592 Upper groove 593 Lower groove 594 Inclined groove 595 Gap 596 Elastic part 597 Mounting part 60 Driving mechanism 601 Loading motor 602 Rotating shaft 610 Pinion gear 611 Body part 611 Tooth 613 Contact surface 614 Guide surface 615 Guide groove 616 Chamfered portion 621 Upper rotation shaft 622 Lower rotation shaft 623a, 623b Support surface 630 First gear 631 Large Gear 640 Second gear 641 Upper gear 642 Contact part 643 Lower gear 650 Gear arm 651 Body part 652 Center hole 653 Gear part 654 Projection part 661 Shaft part 662 Pin part 663 Small gear protrusion 664 Storage part 670 Disk tray position detection mechanism 671 Disc tray position detection switch 672 Support section 673 Detection lever 674 Center axis 680 Slider 681 Body section 682 Pressing piece 683 Projection port 684 Mounting piece 710 Front bezel 711 Opening 712 Concave part 720 Shutter 721 Shaft part 722 Front face 723 Rear disc guide 730 Groove 732 First guide groove 733 Second guide groove 734 Third guide groove 735 Disk mounting portion 736 Support surface 737 Guide slope 738 Rack gear 740 Device body 741 First rotation shaft 742 First Rotating shaft 743 Third rotating shaft 75 Loading drive mechanism 750 Loading motor 751 Pinion gear 752 First gear 753 Second gear 754 Fan-shaped gear 755 Engagement pin 756 Cam member 757 Rack gear 758a, 758b Press projection 76 Disc tray position detection mechanism 760 Position detecting switch 761 First contact 762 Second contact 763 Flexible contact 770 Mechanism unit 771 Optical pickup 772 Pickup base 773a, 773b Guide rod 774 Actuator base 775 Damper base 78 Drive gear 781 Body 782 Teeth 79 Opponent gear

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Satoru Shinbe 1601 Sakai, Atsugi-shi, Kanagawa F-term in Atsugi Works, Mitsumi Electric Co., Ltd. 5D068 AA02 BB01 CC01 EE17 GG06 5D117 AA02 CC07 KK08 KK09

Claims (10)

[Claims] 1. A disk is provided so as to be reciprocally movable in a radial direction of a disk along two first guide rods and a second guide rod arranged in parallel, and records and / or reproduces information recorded on the disk. A disc device provided with a pickup, wherein a skew adjusting means capable of adjusting a skew of the pickup by displacing the second guide rod with respect to the fixed first guide rod is provided. Skew adjustment mechanism of the pickup in the device. 2. The pickup has a pickup base slidably connected at one end to the first guide rod and at the other end to the second guide rod. 2. A skew adjustment mechanism for a pickup in a disk drive according to claim 1, further comprising a displacement means capable of rotating and displacing the base about the axis of said first guide rod. 3. The skew adjustment mechanism of a pickup in a disk device according to claim 2, wherein said displacement means is for displacing at least one end of said second guide rod. 4. The skew adjustment mechanism of a pickup in a disk device according to claim 3, wherein said displacement means displaces both ends of said second guide rod. 5. The frame according to claim 1, wherein the first guide rod is fixed to one frame, and the second guide rod is positioned so as to be displaceable on the frame. Skew adjustment mechanism of the pickup in the disk device. 6. A guide rod pressing spring for pressing a peripheral surface of the second guide rod, and a guide abutting on a side of the peripheral surface of the second guide rod opposite to the guide rod pressing spring. The skew adjustment mechanism of the pickup in the disk device according to claim 5, wherein the skew adjustment mechanism is positioned on the frame by a rod holding member. 7. The pickup device according to claim 6, wherein the guide rod holding member has an adjusting means for adjusting a distance between a peripheral surface of the guide rod holding member and a mounting surface of the frame. Skew adjustment mechanism. 8. The adjusting means includes: a screw hole provided in the guide rod holding member; a screw screwed into the screw hole; and an insertion hole provided on a mounting surface of the frame body and through which the screw is inserted. The skew adjustment mechanism for a pickup in a disk device according to claim 7, wherein a distance between a head of the screw and the screw hole is adjusted by tightening the screw. 9. The holding member having the screw hole, an upper piece abutting on the second guide rod, a lower piece facing the upper piece and having a mounting hole for mounting the screw, 9. The skew adjustment mechanism for a pickup in a disk drive according to claim 8, wherein the skew adjustment mechanism is a substantially U-shaped member having an upper piece and a connection piece for connecting the lower piece. 10. A disk device provided with a pickup skew adjusting mechanism in the disk device according to claim 1. Description: