JPH11149736A - Head moving device for disk apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a tangential skew adjusting device whose structure is simple and which is vey compact. SOLUTION: A screw tube 217 is attached, so as to be freely totatable, to the upper part of a nut 188 which is driven by a lead screw 178. The screw tube 217 is coupled to a screw hole which is formed in the other end 185b of a head moving base 185 so as to be passed through up and down. The screw tube 217 is turned and adjusted. Thereby, the head moving base 185 is turned by using a guide shaft 177 as the rotation center, and a tangential skew is adjusted.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention belongs to the technical field of a head moving device of a disk drive which is most suitable for application to an optical disk drive for recording and / or reproducing an optical disk such as a CD-ROM.

[0002]

2. Description of the Related Art Conventionally, in an optical disk apparatus for recording and / or reproducing an optical disk such as a CD-ROM, a head moving table on which an objective lens of an optical pickup is mounted is guided by a guide shaft while a head moving motor is used. A head moving device is used which is moved along a guide shaft by a lead screw driven in forward and reverse rotations. In a conventional general head moving device, a spindle motor having a disk table formed at an upper end is attached to a mechanical deck, and an object of an optical pickup for an optical disk is interposed between the mechanical deck and a skew adjustment table on which the head moving device is mounted. A tangential skew adjustment device for adjusting the verticality of the optical axis of the lens was incorporated.

[0003]

Therefore, in the conventional head moving device for a disk drive, the skew adjustment is performed because the load of the entire head moving device mounted on the skew adjustment table is applied to the tangential skew adjustment device. It is necessary to increase the strength and vibration resistance of the device, and the structure of the tangential skew adjustment device becomes complicated,
Large size and high cost were incurred.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and provides a head moving device of a disk device capable of realizing a very compact tangential skew adjusting device having a simple structure. It is intended to be.

[0005]

According to a first aspect of the present invention, there is provided a head moving device for a disk drive, wherein one end of a head moving base is guided by a guide shaft and driven by a lead screw. And a head moving table tilt adjusting means for rotating and adjusting the head moving table about a guide shaft between the head moving table and the other end of the head moving table.

[0006] The head moving device of the disk drive of the present invention having the above-described structure is provided with a head moving device provided with a tilt adjusting means disposed between the driving member driven by the lead screw and the other end of the head moving table. Tangential skew adjustment can be performed by adjusting the rotation of the table about the guide shaft at one end thereof.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a disk drive according to the present invention will be described below with reference to the drawings. The disk device described in this embodiment is an optical disk device for recording and / or reproducing an optical disk such as a CD or a CD-ROM, and the optical disk device will be described in the following order. (1) General description of cartridge and optical disk drive (2) Description of chassis (3) Description of cartridge insertion guide (4) Description of cartridge retraction device (5) Description of the mechanical deck and disc loading device (6) Description of the cartridge positioning device (7) Description of the emergency eject device (8) Description of the head moving device (9) Two-axis universal Description of joint (10) Description of tangential skew adjustment device (11) Description of lead screw mounting device (12) Description of thrust bearing device

(1) Outline of Cartridge and Optical Disk Apparatus First, the outline of the cartridge 1 and the optical disk apparatus 10 will be described with reference to FIG. A substantially rectangular and flat cartridge body 2 that is molded
And an upper lid 4 attached to the upper part of the cartridge main body 2 so as to be openable and closable in a vertical direction about a hinge 3. An optical disk 5 such as a CD or a CD-ROM corresponding to a disk-shaped recording medium can be exchanged in the cartridge 1 (the upper cover 4 is opened and the optical disk 5 is opened).
Can be replaced freely). A slot-shaped bottom opening 6 is formed from the center of the cartridge main body 2, which is the bottom 1a of the cartridge 1, to the center of the front end 1b. The cartridge 1 is slidably mounted in the directions of arrows a ₁ and a ₂ along the front end 1b. The shutter 7 is moved by an arrow a to a closed position by a built-in shutter spring (not shown).
_It is slid in _two directions. In addition, a chucking pulley 8 is attached to the inner surface of the central part of the upper lid 4.

The optical disk device main body 11 constituting the optical disk device 10 corresponding to the disk device has 5
It is configured in a flat rectangular shape compatible with the inch form factor, and has a width W of about 146.0 mm, a height H of about 41.4 mm, and a depth D of about 203.0 mm.
Is configured. Then, this optical disk device main body 1
The cartridge 1 is moved from the horizontally long cartridge insertion slot 13 formed on the upper side of the front panel 12 to the arrow b ₁ ,
b It is configured to be able to load and eject from _two directions. The front panel 12
The eject button 1 is located below the cartridge slot 13
4, an emergency eject operation hole 15, a volume knob 16, an earphone jack 17, and the like are provided.

(2) Description of Chassis Next, referring to FIGS.
The chassis constituting the optical disk device main body 11 will be described. First, the optical disk device main body 11 has a dust-proof resin chassis 2 made of synthetic resin.
0, and the resin chassis 20 has a thickness T _1.
= A bottom plate 20a having a substantially uniform thin structure and a pair of left and right side plates 20b and a rear plate 2
0c and a front opening 2
Od and the upper surface opening 20e open two surfaces, the front surface and the upper surface. A front frame 21 and a pair of left and right side frames 22 formed of a sheet metal having a plate thickness T ₂ = about 1.2 mm are assembled in a substantially U-shape in a plan view by a plurality of set screws 23 so as to be detachable. Bottom cover 2 formed by sheet metal
4 is horizontally and detachably assembled by a plurality of set screws 25. A top cover 26 made of sheet metal is horizontally and detachably assembled with a plurality of setscrews 27 on the upper portion of the resin chassis 20, and the upper portion of the resin chassis 20 is closed by the upper cover 26. The thickness T ₃ of the bottom cover 24 and the top cover 26 is a thin plate of about 0.8 mm or less.

By the way, the bottom plate 2 having a substantially uniform thin structure.
When the resin chassis 20 formed in a thin box shape by the pair of left and right side plates 20b and the back plate 20c is injection-molded with synthetic resin, particularly, the pair of left and right side plates 20b having a long span is bent inward. A large molding distortion always occurs. Therefore, the four corners of the top cover 26 are
A pair of left and right deflection prevention ribs 28 integrally formed along the upper edges of the pair of left and right side plates 20b are screwed to the upper end surfaces of the pair of left and right side plates 20b of the resin chassis 20 with the set screws 27. By contacting the left and right side edges 26a of the top cover 26 from the left and right sides, the inward bending of the pair of left and right side plates 20b of the resin chassis 20 is corrected, and the internal effective dimensions of the resin chassis 20 (particularly, Width dimension) is accurately specified. A pair of left and right locking pieces 29 bent vertically downward from both left and right side edges 26 a of the top cover 26 are attached to the resin chassis 20.
Are inserted into a pair of left and right insertion holes 30 formed in the pair of left and right side plates 20b. And 2 of front and top
The resin chassis 20 having the open surface can be easily formed by a simple mold having a normal split structure.

The resin chassis 20, the upper part of which is sealed by the top cover 26, is inserted into the pair of left and right side frames 22 from above and is horizontally disposed.
It is elastically supported by two insulators 31. At this time, a total of four substantially C-shaped insulator mounting pieces 32 that are horizontally bent inside two front and rear portions of each of the pair of left and right side frames 22 are formed into a cylindrical shape by an elastic member such as rubber. Three insulators
1 are fitted by annular grooves 33 formed on the outer periphery thereof, and a total of four insulator mounting bosses 34 integrally formed on the lower surface of the bottom plate 20a of the resin chassis 20 are lightly pressed into the centers of the insulators 31 from above. Then, a total of four setscrews with flanges 35 inserted into these insulators 31 from below are screwed into these insulator mounting bosses 34 from below so as to be fixed, so that the total of four insulators 31 are formed as a pair of left and right side frames. 22 are interposed between a total of four insulator mounting pieces 32 and the bottom plate 20 a of the resin chassis 20. A clearance 36 for vibration resistance is secured between the front frame 21 and the pair of left and right side frames 22 on the outer periphery of the resin chassis 20.

A front panel 12 made of a synthetic resin is detachably attached to a front surface of the front frame 21 by a locking claw (not shown) so as to be detachable and parallel. An opening 38 is provided on the inside of the cartridge insertion opening 13 of the front panel 12. The cartridge insertion slot 12 is opened and closed from the inside by an inner lid 40 rotatably mounted in the front-rear direction (arrows c and d) via a pair of left and right fulcrum pins 39 inside the front frame 21. Have been. And the back of the front frame 21 (the side opposite to the front panel 12)
The U-shaped front end face 20f of the resin chassis 20 is lightly pressure-bonded to the dustproof sponge member 41 adhered to the outer peripheral portion of the inner lid 38, so that the dustproof property inside the resin chassis 20 is ensured. .

The optical disk apparatus main body 11 is configured as described above. When the optical disk apparatus main body 11 is mounted inside a computer or the like, a pair of left and right side frames 22 are screwed to a chassis of the computer or the like, and the front panel 1 is mounted.
2 is exposed outside the front panel of the computer or the like. A dust-proof resin chassis 20 having a substantially uniform thin-walled structure is formed on the optical disk device main body 11.
By using this, it is possible to configure the optical disk device main body 11 to have a compact external dimension compatible with a 5-inch form factor while ensuring high dustproofness inside the optical disk device main body 11 and increasing the effective internal size. it can. Then, a pair of left and right side plates 20b is formed by a top cover 26 that closes an upper portion of the resin chassis 20.
Of the resin chassis 20 is accurately defined.

By the way, inside the resin chassis 20, a cartridge insertion guide, a cartridge retraction device, a mechanical deck and its elevation drive device, a cartridge positioning device, an emergency eject device, a head moving device, a tangential skew adjustment device, and a thrust bearing, which will be described later, are provided. Although all devices such as devices are incorporated, the resin chassis 20 is elastically supported by a total of four insulators 31 with respect to the pair of left and right side frames 22, so that high vibration resistance can be secured.
That is, by incorporating all the above-described devices into the resin chassis 20, the resin chassis 20 becomes a heavy component. Since the inertia force can be increased in proportion to the increase in the weight of the resin chassis 20, unlike the case where only light components such as the head moving device 170 described later are elastically supported by the insulator 31, The vibration of the resin chassis 20 in the X direction, the Y direction and the Z direction shown in FIG.
0 can be realized.

However, the resin chassis 20 is moved in three directions of the X direction, the Y direction, and the Z direction by vibration or impact applied from the outside.
A stopper for preventing the insulator 31 from being damaged or the like is formed on the pair of left and right side frames 22 so as not to vibrate more than a predetermined amount in the direction. That is, the pair of left and right side frames 22 themselves serves as a stopper against a certain amount or more of vibration of the resin chassis 20 in the X direction. A total of four notches 42 formed at two positions before and after the upper end edge of the pair of left and right side frames 22 have front and rear ends 2 at the upper end of the pair of left and right side plates 20 b of the resin chassis 20.
A total of four protrusions 43 formed outside the portion are loosely fitted with a gap, and receive these protrusions 43 when a certain amount or more of vibration of the resin chassis 20 in the X direction and the Y direction is received. These notches 42 serve as stoppers. A pair of left and right stopper pieces 44 bent substantially inward from the upper end edges of the pair of left and right side frames 22 are overlapped with a gap above the top cover 26, and The stopper screw 45 screwed to the frame 21 is
The stopper piece 44 and the stopper screw 45 are disposed above the front end of the bottom plate 20a of the resin chassis 20.
Is configured to be a powerful stopper.

(3) Description of Cartridge Insertion Guide Next, referring to FIGS. 5, 7, 9, 10 and 14,
Describing the cartridge insertion guide 50, the cartridge insertion guide 50 is formed of a sheet metal having a relatively large thickness, and is bent vertically upward from the horizontal guide body 51 and the left and right side edges of the guide body 51. It is composed of a pair of left and right parallel guide pieces 52. A pair of left and right entrance guides 53, which are substantially U-shaped and symmetrically formed at the front ends (front panel 12 side) of the pair of left and right guide pieces 52, are integrally formed. The guide 50 is also formed on a highly rigid chassis reinforcing member.

The high-rigidity cartridge insertion guide 50 is horizontally inserted into the resin chassis 20, and the cartridge insertion guide 50 is detachably mounted at the same height as the cartridge insertion slot 13 in the resin chassis 20. It is screwed in a shape. That is, the four mounting pieces 54 bent downward from the four corners of the cartridge insertion guide 50 into a substantially Z shape are attached to the bottom plate 20 a of the resin chassis 20.
In addition, a total of four mounting screws 55 are detachably screwed on a total of four mounting bases 55 integrally formed on the inner corner portions of the left and right side face plates 20b. Therefore,
The highly rigid cartridge insertion guide 50 made of sheet metal is also used as a reinforcing member of the resin chassis 20 having a substantially uniform thin structure, and rigidity such as planar strength and torsional rigidity of the resin chassis 20 can be secured. That is, by using the resin chassis 20 for the disk device main body 11, the dust resistance inside the disk device main body 11 is ensured, and by forming the resin chassis 20 into a substantially uniform thin structure, the outer shape of the disk device main body 11 is reduced. The effective internal size of the resin chassis 20 is enlarged while the size is reduced. The reduction in the rigidity of the resin chassis 20 due to the substantially uniform thin structure of the resin chassis 20 is reinforced by a highly rigid cartridge insertion guide 50 made of sheet metal, and the rigidity of the resin chassis 20 is also ensured. ,
It is intended to realize a high-precision optical disc device 10 in which all devices incorporated in the resin chassis 20 can operate with high precision.

A shutter opening / closing lever 57 also serving as an eject lever is provided on one side of the rear end of the guide main body 51 of the cartridge insertion guide 50 (the side opposite to the front panel 12). Are mounted so as to be rotatable in the directions of arrows c ₁ and c ₂ . A roller 59 for opening and closing the shutter is rotatably attached to the tip of the shutter opening and closing lever 57. The shutter opening and closing lever 57 is a rotation urging means composed of a torsion coil spring attached around a fulcrum pin 58. is rotated biased in the arrow c ₂ direction by a certain ejector spring 60 is stopped in contact with the stopper 62. In addition, an opening 61 for inserting a disk table and an optical pickup, which will be described later, is formed at a substantially central portion of the guide main body 51.

(4) Description of Cartridge Retracting Apparatus Next, referring to FIGS. 5, 7, 8, 12, and 13,
Describing the cartridge retracting device 65, the cartridge retracting device 65 is mounted on the rear end side of the cartridge insertion guide 50 on the guide main body 51 and on the side opposite to the shutter opening / closing lever 57. The cartridge retraction device 65 has a hook 67 that is engaged with a retraction recess 66 formed on each of the left and right sides of the front end 1 b of the cartridge 1. A slider 68 that drives the hook 67, a rotary lever 69 and a motor 70 for retracting the cartridge.

At this time, first, a slider 68 formed of a synthetic resin is engaged with a plurality of guide pins 71a mounted on the guide body 51 by a guide groove 71b. It is configured to be slidable in the directions of the arrows b _{1 and} b ₂ . A gear train 75 having a worm gear 74 composed of a worm 72 and a worm wheel 73 driven by a cartridge retraction motor 70 and a pinion 76 at the output end of the gear train 75 are mounted on the guide body 51. A rack 77 meshed with the pinion 76 is formed on one side edge of the slider 68.

On the other hand, the rotation lever 69 is located on the guide body 51.
Arrow d about the fulcrum pin 78 attached to₁ , D_Two 
The guide body 51 is rotatably mounted in the
Tension coil bridged between the upper spring locking part 79
Ejection spring 80 which is a rotation urging means made of a spring
By arrow d_Two Direction. And
An interlocking projection 81 integrally formed on the slider 68 is provided.
An interlocking hole 82 formed at the tip end of the rotary lever 69
It is loosely fitted inside. And the tip of this rotating lever 69
Interlocking link 84 is rotatable via fulcrum pin 83 at the end
Attached and molded with synthetic resin
Is connected to the tip of the link 84 via a fulcrum pin 85.
It is rotatably mounted. And that foot
The lower end of the fulcrum pin 85 of the shaft 67 is formed on the guide body 51.
Arrow b along the guide groove 86₁ , B_Two Sliding in the direction
The hook 67 is supported by the fulcrum pin 8
Arrow e on the left and right sides around 5₁ , E_Two Rotate in direction
Free and arrow b ₁ , B_Two Slide freely in any direction
Is configured. Then, the hook 67 and the link
Consisting of a tension coil spring bridged between
The hook 6 is rotated by a hook spring 87 serving as a rotation urging means.
7 is an arrow e about the fulcrum pin 85_Two Biased in the direction
ing.

The operation of inserting and retracting the cartridge 1 into the cartridge insertion guide 50 together with the shutter opening / closing operation will now be described. in the state, the shutter actuating lever 57 is rotated back to the arrow c ₂ direction by the eject spring 60 to the position shown in solid lines in FIG. In addition, as shown by a solid line in FIG. 5 and as shown in FIG. 12, the slider 68 and the rotation lever 69 are slid and returned in the directions of arrows b ₂ and d ₂ , respectively, and the hook 67 is slid in the direction of the arrow b _2. It has been restored.

Therefore, as shown in FIGS. 1 and 3, when loading the cartridge 1,
Arrow from the front end 1b side in the cartridge insertion opening 13 a b ₁
The cartridge 1 inserts the inner lid 40 horizontally.
5 and 9, a pair of left and right guide pieces 5 on the guide body 51 of the cartridge insertion guide 50 as shown by a dashed line in FIGS.
Inserting horizontally from the arrow b ₁ direction between 2. When the cartridge 1 is inserted from the arrow b ₁ direction to a position P ₁₁ shown by the dotted line in FIG. 5 in the cartridge insertion guide 50 abuts the front end 1b is at the tip of the roller 59 of the shutter opening lever 57, hereinafter, as the shutter actuating lever 57 by the cartridge 1 is rotated in the arrow c ₁ direction against the center eject spring 60 to the pivot pin 58 is pushed.

[0025] When the cartridge 1 is inserted in the arrow b ₁ direction to a retraction start position P ₁₂ shown by the two-dot chain line in FIG. 5 in the cartridge insertion guide 50, as shown by the one-dot chain line in FIG. 12 the hook 67 The tip 67a of the slope 6
7b relatively rides on one side surface 1c of the cartridge 1. At this time, the hook 67 is once fulcrum pin 85
After escaping the arrow e ₁ direction against the hook spring 87 around the, by the hook spring 87 is rotated back to the arrow e ₂ direction, the tip 67a is formed on one side surface 1c of the cartridge 1 Is engaged with the drawing recess 66.

When the cartridge 1 is slightly pushed in the direction of arrow b ₁ after the engagement of the hook 67, the rotation lever 69 is moved via the hook 67 and the interlocking link 84 to the fulcrum pin 7.
8 center is slightly rotated in the arrow d ₁ direction, and the cartridge-in switch SW ₁ which is mounted on the guide body 51 is turned ON by the rotation. Then, Figure 1
As shown in FIG. 2, the cartridge retraction motor 70 is driven to rotate forward, the pinion 76 is driven to rotate forward in the direction of arrow f ₁ through a gear train 75 having a worm gear 74, and the slider 68 is moved through arrow b ₁
It is slid in the direction. Then, the slider 68 is driven to rotate the rotation lever 69 by the driving projection 81 in the direction of arrow d ₁ against the ejection spring 80, and the hook 67 is pulled in the direction of arrow b ₁ via the interlocking link 84.

[0027] That is, the normal rotation driving of the cartridge retracting motor 70 after the cartridge-in switch SW ₁ is turned ON, the retracted starting position P ₁₂ where the hook 67 is indicated by a solid line in FIG. 5 and FIG. 12, in FIG. 5 1 with indicated by dash-dotted automatically retracted in the arrow b ₁ along the guide groove 86 to the retraction end position P ₁₃ shown by the solid line in FIG. 13, the pull-in recess 66 is pulled by the hook 67, the cartridge 1 is drawn automatically in the arrow b ₁ direction from the retraction start position P ₁₂ to the retraction end position P _13. Then, with the pull-in operation in the arrow b ₁ direction of the cartridge 1, the fulcrum pin 5 shutter actuating lever 57 until the shutter lid opening position indicated by the chain line in FIG. 5
8 is rotated in the arrow c ₁ direction against the eject spring 60 in the center and press the shutter 7 relatively arrow a ₁ direction roller 59 at the tip along the front end 1b of the cartridge 1, the shutter 7 is automatically opened, and the bottom opening 6 of the cartridge 1 is opened.

[0028] Then, as shown in FIG. 13, when retracted in the arrow b ₁ direction the cartridge 1 until retraction end position P _13, the cartridge stopper 88 the front end 1b of the cartridge 1 is formed on the rotary lever 69 At the same time the stop abuts against, the rack 77 of the slider 68 is a cartridge in completion switch SW ₂ is oN which is mounted on the cartridge body 51 by a cam 89 which is integrally formed on the opposite side, cartridge retracting motor 70 is stopped, the hook 67 is directly locked in the retracted end position P ₁₃ by a reverse rotation preventing function by the worm gear 74 in the gear train 75.

Next, recording and / or
Alternatively, at the time of ejecting the cartridge 1 after the reproduction, the cartridge retraction motor 70 is driven to rotate in the reverse direction in the state shown in FIG.
Arrow f ₂ slider 68 by the pinion 76 which is reverse rotation direction is slidably driven in the arrow b ₂ direction, is rotated in the arrow d ₂ direction by rotating the lever 69 is the eject spring 80 about the fulcrum pin 78, Hook 6
7 is automatically pushed along the guide groove 86 in the arrow b ₂ direction from a retracted end position P ₁₃ shown in FIG. 13 to the retracted starting position P ₁₂ shown in FIG. 12. And the hook 67
Is pushed forward 1b of the cartridge 1 is the cartridge pressing portion 67c which is formed on, the cartridge 1 is automatically pushed out in the arrow b ₁ direction from the retraction end position P ₁₃ to the retracted starting position P _12. At this time, since the shutter actuating lever 57 is rotated from the shutter lid opening position indicated by the chain line in FIG. 5 by the eject spring 60 around the fulcrum pin 58 in the arrow c ₂ direction, the cartridge 1 is two Eject springs 80 and 6
By the spring force of 0 will be pushed out in the arrow b ₁ direction. The arrow c of the shutter opening / closing lever 57
The shutter 7 of the cartridge 1 with the rotation in _two directions
There is automatically closed in the arrow a ₂ direction by the internal spring.

[0030] Then, the cartridge 1 with indicated by a two-dot chain line in FIG. 5, when extruded in the arrow b ₂ direction until retraction start position P ₁₂ shown by the one-dot chain line in FIG. 12, the cartridge-in switch SW by the rotary lever 69 ₁ is OFF
Then, the cartridge retraction motor 70 is stopped.
Then, at this time, the rear end 1d of the cartridge 1 is projected by the arrow b ₂ direction a certain amount to the outside of the cartridge insertion opening 13, after which, by pinching the rear end 1d from the outside of the cartridge insertion opening 13 cartridge When pulling out the 1 to the outside of the optical disc apparatus 10 in the arrow b ₂ direction, the hook 67 escapes rotated in the arrow e ₁ direction against the hook spring 87 around the fulcrum pin 85 from the state shown in FIG. 12, the cartridge 1 can be pulled out easily in an arrow b ₂ direction. Then, as the cartridge 1 is pulled out, the shutter opening / closing lever 57 finally reaches the shutter closing position indicated by a solid line in FIG.
0 is rotated by, while closing the shutter 7 to closed position of the arrow a ₂ direction, it is possible to pull out the cartridge 1 to the outside the optical disk device 10.

(5) Description of mechanical deck and disk loading device Next, FIGS. 6, 7, 8, 9, 15, 15, 26, and 2
The mechanical deck 91 and the disc loading device 100 will be described with reference to FIGS. 9 to 32. First, the mechanical deck 91 formed of sheet metal or the like is attached to the resin chassis 20.
Inside the cartridge insertion guide 50. A pair of left and right fulcrum pins 92 horizontally mounted at the same center on the left and right sides of the rear end 91a of the mechanical deck 91 are integrally formed inside a pair of left and right side plates 20b on the rear end side of the resin chassis 20. A pair of left and right fulcrum pin holding plates 93 and set screws 94 are detachably screwed onto a pair of left and right mounting tables 93. Therefore. The mechanical deck 91 is attached to the inside of the resin chassis 20 so as to be able to move up and down by rotational movement in the directions of arrows g ₁ and g ₂ , which are vertical directions, about a pair of left and right fulcrum pins 92. A spindle motor 95 is mounted above the mechanical deck 91 at a position offset toward the front end 91b.
The disk table 9 integrated with the spindle 96
7 are arranged. Then, at the top of this mechanical deck 91, the rear side of the spindle motor 95 (arrow b ₁ direction side) is equipped with a head moving device 170 which will be described later, the spindle motor 95 is a spindle and the head center P ₁ of the mechanical deck 91 Is placed on top.

Then, the disc loading device 100
Drives the mechanical deck 91 from the lowered position shown in FIG. 7 to the raised position shown in FIG.
And is equivalent to a mechanical deck lifting / lowering drive mechanism for relatively loading (mounting) the optical disk 5 therein on the disk table 97.
On the bottom plate 20a of the “0”, the electronic component is mounted at a position in front of the mechanical deck 91 (position on the front panel 12 side). The disc loading device 100 has a slide cam 101 formed of a synthetic resin. The slide cam 101 is provided with a plurality of guide pins 102 integrally formed on a bottom plate 20 a of the resin chassis 20. have been loosely fitted by the guide groove 103, mounted for the slide cam 101 cartridge inserting direction (arrow b ₁ direction) slid in the arrow h _1, h ₂ direction is a direction perpendicular to on its bottom plate 20a Have been. Then, the back side of the slide cam 101 (arrow b)
_A pair of left and right cam grooves 104 are formed on the left side (in _one direction) so as to be inclined in parallel in the vertical direction.
A pair of left and right cam follower pins 105 attached to the front end 91b side are freely slidably fitted into the pair of left and right cam grooves 104.

[0033] Then, the bottom plate 20 of the resin chassis 20 than the slide cam 101 in the front side (arrow b ₂ direction side)
A gear train 110 having a disk loading motor 106, a worm gear 109 including a worm 107 and a worm wheel 108 driven by the loading motor 106, and a pinion 111 which is an output end of the gear train 110 are mounted on a. And the front side of the slide cam 101 (arrow b ₂ direction side)
The rack 112 integrally formed with the pinion 111 is engaged with the pinion 111.

[0034] The disc loading device 100 is not configured as described above, in the unloading state, have been slid in the arrow g ₂ direction slide cam 101 to the unloading position P ₂₁ shown in FIG. 32, the mechanical deck 91 by a pair of left and right cam follower pin 105 is lowered into parallel form in the arrow g ₂ direction to the lower end 104a of the pair of left and right cam grooves 104, the mechanical deck 91 7
The arrow g ₂ around the pair of left and right fulcrum pins 92 as shown in FIG.
Has been lowered in the direction. The disk table 97 of the spindle motor 95 mounted on the mechanical deck 91 is connected to the guide body 5 of the cartridge insertion guide 50.
It has been lowered to a position below 1.

[0035] Then, in the unloading state, as shown in FIG. 8, the cartridge 1 is inserted horizontally in the arrow b ₁ direction into the cartridge insertion guide 50 from the cartridge insertion opening 12 in the manner described above, and the cartridge retracting cartridge 1 is locked is drawn automatically until retraction end position P ₁₃ shown by the one-dot chain line in FIG. 5 by the apparatus 65.

[0036] Then, as described above, the cartridge in completion switch SW ₂ is turned ON, as shown in FIG. 26, the disk loading motor 106 is normally rotated, the gear train 1 having a worm gear 109
10 the pinion 76 via the driven positively rotate in the arrow i ₁ direction, the slide cam 101 in FIG. 3 via the rack 112
From the unloading position P ₂₁ shown in 2 to the loading position P ₂₂ is slidably driven in the arrow h ₁ direction. Then, a pair of left and right cam follower pins 105 of the mechanical deck 91 are moved by the pair of left and right cam grooves 104.
O is driven upward in the arrow g ₁ direction from the lower end 104a to the upper end 104b, as shown in FIG. 6, the loading switch SW ₁₁ which is mounted on the bottom surface 20a of the resin chassis 20 by the projections 113 of the slide cam 101
N, the disc loading motor 106 is stopped. Then, a pair of left and right cam follower pin 105 is directly locked in the raised position of the arrow g ₁ direction by the reverse rotation preventing function by the worm gear 109 in the gear train 110.

[0037] Then, by a pair of left and right cam follower pin 105 is driven raised in the arrow g ₁ direction by the slide cam 101, FIG from the lowered position to the mechanical deck 91 is shown in FIG. 7 around the pair of right and left support pins 92 8 It is raised by the rotational movement in the arrow g ₁ direction to a raised position shown in,
At the raised position shown in FIG. Then, the disk table 97 of the spindle motor 95 mounted on the mechanical deck 91 driven upwardly moves the opening 61 of the cartridge insertion guide 50 and the cartridge 1.
The optical disk 5 in the cartridge 1 is inserted vertically into the cartridge 1 through the bottom opening 6 and is chucked horizontally on the disk table 97 by the chucking pulley 8. Then, as will be described later, the optical disk 5 is rotated in the cartridge 1 by the spindle motor 95, and the recording and / or reproduction of the optical disk 5 is performed.

Then, at the time of unloading after recording and / or reproduction of the optical disk 5, in the state of FIG.
Disk loading motor 106 is driven reversely rotated, the reverse operation at the time of loading, the slide cam 101 by the pinion 111 which is driven reversely rotated in the arrow i ₂ direction
There is slid back to the arrow h ₂ direction from a loading position P ₂₂ shown in FIG. 32 to the unloading position P _21,
The pair of left and right cam follower pins 105 is
4 of the upper end 104b to the lower end 104a is lowered in the arrow g ₂ directions. The mechanical deck 91 is lowered in the arrow g ₂ direction by the rotational movement from the raised position shown in FIG. 8 around the pair of right and left support pins 92 to the lowered position shown in FIG. 7, the disc table 97 of the spindle motor 95 is a cartridge from the optical disc 5 in 1 is detached in the arrow g ₂ direction to the lower position of the cartridge 1 is pulled in the arrow g ₂ directions. Accordingly, thereafter, as described above, the arrow b of the cartridge 1 by the cartridge retraction device 65
Pushing operation in _two directions becomes possible.

(6) Description of Cartridge Positioning Apparatus Next, the cartridge positioning apparatus 117 will be described with reference to FIGS. 14 to 25.
When the optical disk 5 in the cartridge 1 is horizontally loaded onto the disk table 97 by the 00, the cartridge 1 is positioned on the mechanical deck 91 as a pair of left and right reference pins 118 and height regulating pins 1 which are cartridge positioning pins.
It is mounted horizontally on the top 19 for positioning.

That is, a pair of left and right height control tables 120 are integrally formed at the left and right sides of the front end 91b of the mechanical deck 91. Mounted vertically. Then, on the mechanical deck 91, the spindle motor 9
5 of the center P ₃₁ pair of reference pins 11 around the
A pair of right and left height regulating pins 119 are vertically mounted at symmetrical positions with respect to the vertical direction.

A horizontal plate-like cartridge pressing member 121 formed of sheet metal is horizontally disposed between the upper portions of a pair of left and right guide pieces 52 of the cartridge insertion guide 50. , A total of six cartridge holding projections 122 are projected downward from the cartridge holding member 121 so as to be projected. A pair of left and right side plates 121a vertically bent from both left and right edges of the cartridge pressing member 121 are inserted from above into the left and right sides of the pair of left and right guide pieces 52 of the cartridge insertion guide 50. A total of four cam driven pins 123 are horizontally mounted on both front and rear ends on both sides of the pair of side plates 121a. A slide plate 124 is provided below the guide body 51 of the cartridge insertion guide 50.
Are slidably mounted in the forward and backward directions of arrows b ₁ and b ₂ via a plurality of guide pins 125 and guide grooves 126. A pair of side plates 12
4a are inserted from below into both sides of a pair of left and right side plates 121a of the cartridge pressing member 121. A total of four cam grooves 127 are formed at the front and rear ends of the pair of left and right side plates 124a so as to be inclined in parallel in the vertical direction. 123 is freely slidably fitted in these four cam grooves 127. A pair of left and right guide pins 132 formed on the left and right sides of a pair of left and right guide pieces 52 of the guide body 51 are vertically slidable in vertical guide grooves 133 formed on the left and right side plates 121a of the cartridge pressing member 121. , And the cartridge pressing member 121 is attached to the guide body 51 so as to be able to move up and down in the directions of arrows g ₁ and g ₂ which are vertical directions.

The [0042] above, the arrows g ₁ is a vertical direction of the cartridge pressing member 121 relative to the cartridge insertion guide 50 by the cam follower pin 123 and the cam grooves 127,
g ₂ cartridge pressing member driving mechanism 134 for vertically driving the parallel movement direction is configured. Then, a pair of left and right positioning springs 128, which are slide urging means formed of a tension coil spring and bridged between the cartridge insertion guide 50 and the pair of left and right side plates 124a of the slide plate 124, are provided on both left and right sides of the cartridge insertion guide 50. Are arranged in parallel with the insertion direction of the cartridge 1 (directions of arrows b ₁ and b ₂ ), and the pair of left and right positioning springs 128 moves the slide plate 124 rearward with respect to the cartridge insertion guide 51. b It is urged to slide in the ₁ direction. Then, the slide plate 124
Cam follower pin 129 in the lower portion of the central portion is attached to the vertical form of the front side, the upper cam follower pin 129 is at the position of arrow b ₂ direction side is a front side of the slide cam 101 of the disc loading device 100 Is inserted from. A cam driven pin 129 is provided on the front side surface of the slide cam 101 by arrows b ₁ , b
A cam 130 driven in _two directions is integrally formed.

The cartridge positioning device 117 is configured as described above. In the unloading state, the cartridge loading device 117 is driven by the disk loading motor 106 as shown in FIG.
By slide cam 101 as shown in 2 is slid in the arrow h ₂ direction until the unloading position P _21, the cam follower pin 129 of the slide plate 124 by the cam 130 is pushed in the arrow b ₂ direction, FIG. 22 As shown in FIG. 16, the slide plate 124 is moved to the unloading position P against the pair of left and right positioning springs 128.
It is slid in the arrow b ₂ direction until _41. A total of four cam follower pins 12 of the cartridge holding member 121 are formed by a total of four cam grooves 127 of the slide plate 124.
3 is pushed up to the parallel form of the arrow g ₁ direction is upward, and is raised by the parallel movement in the arrow g _1-way cartridge pressing member 121 to a position above the cartridge insertion guide 50.

Therefore, in this unloading state,
As shown in FIGS. 18 and 20, a total of six cartridge holding protrusions 122 of the cartridge holding member 121 are positioned at a height H ₁₁ greater than the thickness T _{11 of the} cartridge 1 with respect to the guide body 51 of the cartridge insertion guide 50. Arrow g up to
_As shown in FIG. 8, the cartridge 1 is moved upward from the cartridge insertion opening 12 onto the guide body 51 of the cartridge insertion guide 50 as shown in FIG.
Inserted from _one direction horizontally and by the cartridge retraction device 65 when the cartridge 1 is automatically retracted and locked to the retraction end position P ₁₃ shown by the one-dot chain line in FIG. 5, 18 and 20 As shown in the drawing, the cartridge 1 can be inserted and pulled in smoothly without interfering with the six cartridge holding projections 122 of the cartridge holding member 121.

Then, as described above, the cartridge-in completion switch SW ₂ is turned on, and the disc loading motor 106 of the disc loading apparatus 100 is turned on.
There is normally rotated, as shown in FIG. 30, the slide cam 101 is slidably driven in the arrow h ₁ direction from the unloading position P ₂₁ to the loading position P _22, FIG from the lowered position to the mechanical deck 91 is shown in FIG. 7 8 Once raised to the arrow g ₁ direction to a raised position shown in, as shown in FIGS. 19 and 21, a pair of right and left pair of reference pins 118 are formed on the bottom 1a of the cartridge body 2 of the cartridge 1 positioned The cartridge 1 is inserted into the hole 131 from below in the direction of the arrow g ₁ , and the cartridge 1 is moved by the pair of left and right height regulating tables 120 and the height regulating pins 119.
It is pushed upward from 1 slightly parallel.

[0046] Then, as shown in FIG. 23, by the slide cam 101 is slidably driven in the arrow h ₁ direction from the unloading position P ₂₁ to the loading position P _22, the cam follower pin 129 of the cam 130 the slide plate 124 outside in the arrow h ₁ direction from. Then, as shown in FIGS. 23 and 17, a pair of left and right positioning springs 128 is provided.
The slide plate 124 moves the cartridge insertion guide 5
0 is slidably driven in the arrow b ₁ direction from the unloading position P ₄₁ to the loading position P ₄₂ against a total of four cam follower pin 123 of the cartridge pressing member 121 by a total of four cam grooves 127 of the slide plate 124
There depressed parallel shape of the arrow g ₂ direction is downward.
That is, the pair of the positioning spring 128, is pulled in the arrow g ₂ direction by parallel motion cartridge pressing member 121 from the raised position shown in FIG. 16 to the lowered position shown in FIG. 17, the sum of the cartridge pressing member 121 6 One of the cartridge pressing projection 122 is at the top 1e of the cartridge 1, it is abutting the arrow g ₂ directions a total of 6 places corners of the right and left sides 1c, the cartridge 1
There depressed parallel shape of the arrow g ₂ directions. The bottom 1 a of the cartridge 1 is positioned above the pair of left and right height regulating stands 120 and the height regulating pins 119 of the mechanical deck 91 by the spring force of the pair of left and right positioning springs 128.
_It is crimped in parallel from _two directions and positioned with high precision. At this time, a pair of left and right positioning springs 128 are arranged on both left and right sides of the cartridge insertion guide 50 in parallel with the cartridge insertion direction, so that the effective stroke of the positioning spring 128 can be reduced while the optical disc device 10 is made thinner. It can be made sufficiently large, and the spring force for positioning the cartridge 1 can be effectively exerted.

[0047] At the time of unloading after recording and / or reproducing of the optical disc 5, a reverse operation at the time of loading, from a loading position P ₂₂ of the slide cam 101 in the disk loading apparatus 100 shown in FIG. 30 to the unloading position P ₂₁ by being slid back to the arrow h ₂ direction, arrow g ₂ to the lowered position shown in FIG. 7 from the raised position shown in the mechanical deck 91 is 8 as described above
The pair of reference pins 1 on the left and right
18 together is extracted in an arrow g ₂ direction, which is downward from the cartridge 1, from the loading position P ₄₂ shown in Fig. 17 against the slide plate 124 is a pair of right and left positioning spring 128 again by the cam 130 of the slide cam 101 Figure Arrow b ₂ to the unloading position P ₄₁ shown in FIG.
The cartridge is pressed back in the direction
From the lowered position shown in FIGS. 19 and 21 and FIGS.
To the raised position shown in 0 it is raised returned by parallel motion in the arrow g ₁ direction.

(7) Description of the Emergency Eject Apparatus Next, the emergency eject apparatus 135 will be described with reference to FIGS. 26 to 35. A device for manually ejecting (removing) the cartridge 1 from the optical disk device 10 in an emergency such as when the power is suddenly cut off due to a power failure or the like during recording and / or reproduction of the optical disk 5 described later. It is.

The emergency eject device 135 has the cartridge retraction device 65 described above.
And two clutches 136 and 137 provided in the drive paths of the cartridge retraction motor 70 and the loading motor 106 of the disc loading apparatus 100, respectively.
When both the clutches 136 and 137 are switched to the non-transmission state, the cartridge 1 is removed when both the emergency ejection operation rod 148 and the two clutches 136 and 137 are switched to the non-transmission state. Ejecting means for ejecting the cartridge from the cartridge insertion guide 50 to the outside of the cartridge insertion slot 13 is provided.

The two clutches 136 and 137 are provided in the clutch trains 138 and 139 which are disposed in the gear trains 75 and 110 which constitute the drive paths of the cartridge retraction motor 70 and the disc loading motor 106, respectively. To these clutch gears 13
A structure is adopted in which the input gear and / or the output gear for the gears 8 and 139 are cut off. Here, the clutch gear 138 of the one clutch 136 is configured as an intermediate gear, and is configured to cut into the other intermediate gear 140 disposed on the output side in the gear train 75, and the other. The clutch gear 139 of the clutch 137 is a pinion 1 at the output end of the gear train 110.
11 is cut into the rack 112 (hereinafter, the pinion 111 is connected to the clutch gear 139).
It is described. ). And these clutch gears 13
Numerals 8 and 139 are configured to be able to move up and down along the support shafts 141 and 142 in the vertical directions j ₁ and j ₂ , respectively, and are composed of compression coil springs attached to the outer periphery of the support shafts 141 and 142. These clutch gears 13 are biased by clutch springs 143 and 144 which are urging means.
8, 139 is urged downward to a lower position, which is a position of engagement with the intermediate gear 140 and the rack 112. The two support shafts 141 and 142 are respectively composed of the cartridge insertion guide 50 and the resin chassis 20 to which the respective gear trains 75 and 110 are attached, and the gear train support plate 145 and
146 is supported vertically at both ends.

The emergency eject operation rod 148 is formed of a sheet metal. The emergency eject operation rod 148 includes a plurality of guide pins along the lower portion of the guide body 51 of the cartridge insertion guide 50 on the gear train 75 side. 149 and a guide groove 150 to form a slide member slidably attached in the front and rear directions of arrows b ₁ and b ₂ . And
The emergency eject operation lever 148 is slid biased in the arrow b ₂ direction, which is forward by a slide biasing means is a manipulation扞用spring 151 consisting of bridged the tension coil spring between the guide body 51. The lower end of the clutch gear 138 of one clutch 136 is inserted into an insertion hole 152 formed in the guide main body 51, and is supported together with the clutch gear 138 on the support shaft 1.
Arrow j ₁ along the 41, j ₂ made of synthetic resin is a cam means which is moved up and down in the direction of the clutch cam 153 is attached, the arrow j ₁ by the clutch cam 153 is a boss 153a on the outer periphery of the support shaft 141, vertically movably mounted to the j ₂ direction, the clutch gear 138 is rotatably mounted on the outer periphery of the boss 153a. An operation section 154 for operating the clutch cam 153 is formed at the rear end of the emergency eject operation rod 148.

An operation section 155 made of synthetic resin for operating the clutch gear 139 of the other clutch 137 is fixed to the front end of the emergency eject operation rod 148. Then, at the lower part of the operation unit 155,
An operation conversion lever 156 made of synthetic resin is provided on a bottom plate 20 a of the resin chassis 20 via a fulcrum pin 157 and an arrow k.
_1, k ₂ have rotatably mounted in the direction, the rotation urging means comprising the bridged the tension coil spring between the spring engaging portion 166 integrally formed on the operation changeover lever 156 is a bottom plate 20a Conversion lever spring 158
It is rotationally urged in the arrow k ₂ direction by the bottom surface plate 20a
The stopper 159 is stopped by being brought into contact with a stopper 159 formed integrally with the stopper 159. The other at the lower end of the clutch gear 139 of the clutch 137, the clutch cam 160 made of synthetic resin is a cam means which is moved up and down in the arrow j _1, j ₂ along the support shaft 142 together with its clutch gear 139 The clutch cam 160 is attached to the boss 16
Vertically movably attached to the arrow j _1, j ₂ along the support shaft 142 by 0a, the clutch gear 139 is rotatably mounted on the outer periphery of the boss 160a. The operation conversion lever 156 includes an operation unit 161 operated by the other operation unit 155 of the emergency eject operation rod 148, an operation unit 162 for operating the clutch cam 160, and an operation unit for operating the slide cam 101 described above. 163 are integrally formed. The operation unit 1 at the front end of the emergency eject operation rod 148
A frusto-conical recess 164 is formed on the front end surface of the optical disk device 55, and the frusto-conical recess 164 is disposed immediately opposite the emergency eject operation hole 15 formed in the front panel 12 of the optical disc device 10. Have been.

The emergency ejection device 13
5 is configured as described above. In a normal state, FIG.
As shown in FIG. 3, the emergency eject operation rod 1
48 is slid back to the arrow b ₂ direction by the operation扞用spring 151, as shown in FIG. 27, the arrow b ₂ direction from the clutch cam 153 of the clutch gear 138 in the operation unit 154 is one clutch 136 while Are separated. Therefore, the clutch gear 138 is being lowered in the arrow j ₂ direction to a lowered position which meshes with the intermediate gear 140 by the clutch spring 143, the clutch 1 of this one
36 is in the ON state (refer to transmission state), and as shown in FIG. 33, by emergency eject operation lever 148 is slid back to the arrow b ₂ direction, the operation for conversion lever 156 are rotated back to the arrow k ₂ direction by changeover lever spring 158 is abutted against the stopper 159, as shown in FIG. 31,
The operation unit 162 is spaced from the clutch cam 160 of the clutch gear 139 in the other clutch 137 in the arrow k ₂ direction. Therefore, the clutch gear 139 is made have been lowered in the arrow j ₂ direction to a lowered position to the rack 112 meshed with the clutch spring 144, and the other clutch 136 is also ON state (refer to transmission state). Further, as shown in FIG.
By 6 is rotated back to the arrow k ₂ direction,
It is released to the arrow k ₂ direction the operation unit 163 to a position where it does not interfere with the slide cam 101.

Next, at the time of the emergency eject operation, as shown in FIGS. 34 and 35, an emergency eject operation rod 165 such as a wire is inserted into the emergency eject operation hole 15 from the outside of the front panel 12 of the optical disk device 10. insert in the arrow b ₁ direction, thrusts the tip emergency eject operation lever 148 front face frustoconical recess 164 of the operation扞用spring 15 the emergency eject operation lever 148
Up clutch OFF position shown in FIG. 35 against 1, slid in the arrow b ₁ direction. Then, as shown in FIG. 28, emergency operating portion 154 of the rear end of the ejecting operation lever 148 is pressed from the arrow b ₁ direction clutch cam 153 in one of the clutch 136, the clutch cam 153 itself camming ( by sliding guiding action), the clutch cam 153 is pushed in the arrow j ₁ direction is upward against the clutch spring 143 along the support shaft 141. Then, the clutch gear 138 with the clutch cam 153 is pushed up in the arrow j ₁ direction until withdrawal has been raised position from the intermediate gear 140, is switched clutch 136 of this one is in the OFF state (refer to non-transmission state) .

At this time, as shown in FIGS. 34 and 35, the operation section 151 at the front end of the emergency eject operation rod 148 is connected to the operation section 16 of the operation conversion lever 156.
1 Press the arrow b ₁ direction, the operation for converting lever 15
6 rotating operation in the arrow k ₁ direction against the fulcrum pin 157 converts the center lever spring 158 to a. Then, the operation for conversion lever 156 is operated to rotate in the arrow k ₁ direction to the clutch OFF position shown in FIG. 35, as shown in FIG. 32, the operation unit 162 of the operation for conversion lever 156 is in the other clutch 137 Arrow k on clutch cam 160
Is pressed from _one direction, the clutch cam 160 itself camming by (sliding guiding action) The clutch cam 160 is pushed in the arrow j ₁ direction is upward against the clutch spring 144 along the shaft 142. And
Clutch gear 139 with the clutch cam 160 is pushed up in the arrow j ₁ direction to a raised position that is disengaged from the rack 112, also OFF the other clutch 137
State (non-transmission state).

Further, at this time, as shown in FIGS. 34 and 35, another operating portion 1 of the operating conversion lever 156 is used.
63 abuts the arrow k ₁ direction to one end of the slide cam 101, and drives slide the slide cam 101 in the arrow k ₂ direction from a loading position P ₂₂ shown in FIG. 30 to the unloading position P _21. Then, as described above, the mechanical deck 91 is driven downward in the arrow g ₂ direction from the raised position shown in FIG. 8 to the lowered position shown in FIG. 7, the disk table 97 and the pair of reference pins 118 of the spindle motor 95 is a cartridge The cartridge 1 is pulled down downward, and the cartridge 1 can be ejected.

The cartridge 1 is moved by the spring force of the ejecting spring 60 of the shutter opening / closing lever 57 and the ejecting spring 80 of the cartridge retracting device 65 which are also used as the ejecting means of the cartridge 1 as shown in FIG.
Since the automatically pushed in the arrow b ₂ direction until retraction start position P ₁₂ from the retracted end position P ₁₃ shown in, pinch the rear end 1d of the cartridge 1 in the cartridge insertion opening 12 outside the cartridge 1 the optical disk apparatus 10 outside Can be extracted. Incidentally, at this time, as shown in FIGS. 5, 12 and 13, the shutter opening and closing lever is rotated back to the arrow c ₂ direction by the eject spring 60 57
Arrow slider 68 via the interlocking projections 81 with interlocking hole 82 at the same time pressing the front end 1b of the cartridge 1 in the arrow b ₂ direction, the rotation lever 69 is rotated restored by the eject spring 80 in the arrow d ₂ direction by b ₂
So as to slide back to a direction, the front end 1b of the cartridge 1 even hook 67 so as to press the arrow b ₂ direction, thereby pushing the cartridge 1 in the arrow b ₂ direction.

(8) Description of Head Moving Apparatus Next, the head moving apparatus 170 will be described with reference to FIGS. 6 and 36 to 42. As shown in FIG. the rear side of the position (arrow b ₁ direction) have been relatively large opening 171 formed along the spindle and the head center P _1, skew adjustment base formed by a sheet metal shown in FIG. 36 in the lower portion of the opening 171 172 are arranged horizontally. Then, the skew adjustment base 172 in the vertical direction around the spindle and the left-right pair of horizontal pivot pins 173 arranged in a horizontal skew on adjusting shaft P ₂ perpendicular to the head center P ₁ in the lower portion of the mechanical deck 91 A skew adjustment motor that is rotatably mounted in the directions of the arrows m ₁ and m ₂ , and is provided above the rear end 91 a of the mechanical deck 91 to rotate the skew adjustment table 172 in the directions of the arrows m ₁ and m _2. A skew adjusting device 175 having the 174 is mounted.

[0059] Then, as shown in FIGS. 36 to 42, a relatively large opening 186 along the spindle and the head center P ₁ to skew adjustment base 172 have been formed, parallel to the spindle and the head center P ₁ Guide shaft 177 and lead screw 1 corresponding to a so-called main shaft
78 is a skew adjustment table 17 at both left and right positions of the opening 176.
It is detachably mounted on 2. The guide shaft 177 and the lead screw 178 are made of metal such as stainless steel. And the skew adjustment table 17
The guide shaft 177 is formed by a pair of front and rear positioning members 180 fixed with high precision by a pair of set screws 179 on the upper surface 2.
177a, 177b at the front and rear ends of the
Be fixed to the upper, the guide shaft 177 is mounted with high accuracy into a complete parallel state with respect to the spindle and the head center P _1. And lead screw 1
The front and rear ends 178a and 178b of the 78 are mounted on the skew adjustment table 172 using a pair of front and rear thrust bearings 181 and 182 and a leaf spring 183 so as to be removable.

A head moving base 185 is horizontally disposed between the guide shaft 177 and the lead screw 178, and is formed at the front and rear ends of one end 185a of the head moving base 185 in the left-right direction. A pair of cylindrical thrust receivers 186 are slidably inserted in the directions of arrows b ₁ and b _{2 around the} guide shaft 177. A lead groove 187 is formed in a spiral shape on the outer periphery of the lead screw 178, and a completely cylindrical nut 188 made of metal, abrasion-resistant synthetic resin, or the like is provided with an arrow b _{1 on} the outer periphery of the lead screw 178. , B2 are slidably inserted in _two directions. A lead ridge 189 integrally formed in a spiral shape on the inner periphery 188 a of the nut 188 is formed in the lead groove 1 of the lead screw 178.
87 is slidably engaged over a long area in the circumferential direction. The other end 185b of the head moving base 185 is mounted on the nut 188 via a biaxial universal joint 210 and a tangential skew adjusting device 215 described later.

An objective lens 190 for a CD-ROM constituting the head is provided on the head moving base 185.
A CD objective lens 191 is vertically mounted by a biaxial actuator (not shown), and a laser beam is selectively applied to the objective lenses 190 and 191 inside the head moving base 185. In addition, an optical pickup (not shown) for receiving the reflected light of the laser beam is incorporated. The lead screw 1 is located above the skew adjustment table 172.
A head moving motor 192 is attached to the side of the head 78 in parallel with the lead screw 178, and is rotated via an intermediate gear 194 by a motor gear 193 fixed to a motor shaft 192a of the head moving motor 192. The driven gear 195 to be driven is the lead screw 1
78 is fixed to the outer periphery on the rear end 178b side by press fitting or the like. Then, the outer periphery of the lead screw 178, the front side of the driven gear 195 (arrow b ₂ direction side) of the elastic stopper 196 formed in a cylindrical shape by an elastic member such as rubber is attached at press fitting or the like. The motor shaft 192
The encoder of the motor 174 for moving the head is constituted by the slit disk 197 fixed to the rear end of “a” and the photocoupler 198 attached to the skew adjustment table 172.

[0062] The head moving device 170, be configured as described above, as described above, the mechanical deck 91 by the disc loading device 100 is locked is raised in the arrow g ₁ direction to a raised position shown in FIG. 8 Sometimes, the guide shaft 177 and the lead screw 178 become horizontal, and the objective lenses 190, 1
91 is inserted from below into the bottom opening 6 of the cartridge 1 and approaches the lower surface of the optical disk 5. Then, in a state where the laser beams selectively applied to the objective lenses 190 and 191 by the optical pickup are focused on the optical disk 5 from below, the motor 193, the intermediate gear 194, and the driven gear 195 by the head moving motor 192.
The lead screw 178 is driven to rotate forward and reverse through the lead screw 178 and the nut 188.
Then, the head moving table 185 is moved along the guide shaft 177 in the directions of the arrows b ₁ and b ₂ by the screw feed action.
Then, while seeking along the laser beam to the spindle and the head center P _1, for recording and / or reproducing data of the optical disk 5.

At this time, a completely cylindrical nut 188 is inserted into the outer periphery of the lead screw 178, and the nut 18
The helical lead ridge 189 formed on the inner periphery 188 a of the lead screw 178 is engaged with the helical lead groove 187 formed on the outer periphery of the lead screw 178 over a long circumferential area. Therefore, unlike the related art in which a needle or a half nut is engaged with a lead screw 178 by a leaf spring as in the related art, a head moving motor 19 is used.
2, the lead screw 178 is driven to rotate forward and reverse at high speed, and when the head moving base 185 is reversely moved at high speed in the directions of arrows b ₁ and b ₂ , the lead protrusion of the nut 188 is caused by the inertia of the head moving base 185. Article 189
There is no danger of accidental removal from the lead groove 187 of the lead screw 178. Therefore, lead screw 1
The high-speed rotation drive of the 78
0, 191 can perform high-speed seek of the laser beam. Further, since the nut 188 is engaged with the lead groove 187 of the lead screw 178 over a long area in the circumferential direction by the lead protrusion 189, the lead groove 187 and the lead protrusion are caused by the high-speed rotation of the lead screw 178. The friction load of the head screw 189 is also very small, the wear resistance of the lead screw 178 and the nut 188 is high, and the durability of the head moving device 170 is significantly improved. Note that the elastic stopper 196 is connected to the head moving base 185.
The arrow b serves as a cushion at the time of runaway in the ₁ direction.

(8-1) Description of Apparatus for Preventing Rattle of Nut Next, the apparatus 200 for removing looseness of the nut 188 will be described with reference to FIGS.
In order to engage the lead ridge 189 of the lead screw 178 with the lead groove 187 of the lead screw 178 to smoothly feed the screw, the lead ridge 18
9, the width of the lead groove 187 and the lead ridge 189 must be slightly loose in the directions of the arrows b ₁ and b ₂ . However, this play is caused by the lead screw 178 and the head moving table 18.
Large play occurs due to inertia when the high-speed seek operation 5 is performed in the directions of the arrows b ₁ and b ₂ , thereby deteriorating the accuracy of the high-speed seek operation.

Therefore, in this head moving device 170,
The nut 18 for such a lead screw 178
The play in the directions of the arrows b ₁ and b _{2 of} 8 is removed. That is, in the play removing device 200, a play removing nut 201 corresponding to an auxiliary nut made of a metal, a wear-resistant synthetic resin, or the like is used. Are formed integrally in a spiral shape. The tapered surface 203 is formed on the outer periphery of an end portion of the arrow b ₁ side of the backlash removal nut 201. The nut 188 is configured to be relatively long in the axial direction (the directions of the arrows b ₁ and b ₂ ), and a lead ridge 189 is formed on the inner periphery 188 a of the nut 188 at the end 188 b in the direction of the arrow b _1. And
An arrow b _{2 has} an end portion 188c in the _two directions and a four-way slit 204.
Are formed.

Therefore, as shown in FIG.
8 and the loosening nut 201 are connected to these lead projections 18.
9 and 202, the end 188 of the nut 188 is engaged with the lead groove 187 of the lead screw 178.
Rotate the backlash removal nut 201, for example, in a clockwise direction (arrow n ₁ direction) on the inside of c, go screwed in the arrow b ₁ direction. At this time, the slot 204 formed on the end 188c of the nut 188 is pushed out in the radial direction against the elasticity by the tapered surface 203 on the outer periphery of the play removing nut 201, so that the play removing nut 201 is
Can easily be press-fitted into the end portion 188b.

Then, as shown in FIG. 41, the play removing nut 201 is moved to the maximum tightening position P _{51 with} respect to the nut 188.
After screwing once the arrow b ₁ direction until, 1 ° the backlash removal nut 201 for example in the counterclockwise direction (arrow n ₂ direction)
Returning to 2 °, is moved from the maximum clamping position P ₅₁ backlash removal nut 201 relative to the nut 188 in the arrow b ₂ retracted position P ₅₂ which is retracted by a few microns in the direction, the lead of these nuts 188,201 The lead groove 18 of the lead screw 178 is provided between the inner facing portions of the ridges 189 and 202.
So that the gap G of several micron order is formed for the pitch P ₅₃ 9. Then, in this state, both nuts 1
88 and 201 are combined and used with an adhesive or the like.
As a result, the lead protrusions 189, 202 of these nuts 188, 201 are connected to the lead groove 1 of the lead screw 178.
87 can be engaged with little play, and the head moving base 185 can be moved in the directions of arrows b ₁ and b ₂ by the high-speed forward / reverse rotation drive of the lead screw 178 without play. Thus, the above-described high-speed seek operation can be performed with high accuracy. The nuts 188 and 20 are provided on the outer periphery of the nut 188 and the play removing nut 201.
1 are formed with chamfers 205 and 206 for engaging a wrench for tightening each other.

(9) Description of Two-Axis Universal Joint Next, the two-axis joint 210 will be described with reference to FIGS. 36, 37, 38, 41, 42 and 43. Absorbs the parallelism of the lead screw 178 with respect to the guide shaft 177 so that the head moving base 185 can be smoothly and rapidly sought in the directions of arrows b ₁ and b ₂ along the guide shaft 177 by the lead screw 178. Things. Therefore, on the left and right sides of the substantially central portion of the nut 188 in the axial direction,
Are attached by press-fitting or integrally molding a pair of left and right horizontal rotation center pin 211 on the horizontal rotation center P ₆₂ which is perpendicular to the lead screw center P _61. A pair of left and right legs 212a of a turntable 212 formed in a substantially U shape by a leaf spring or the like are rotatably attached to the outer periphery of the pair of left and right horizontal rotation center pins 211. Then, on top 212b of the turntable 212, the vertical center of rotation perpendicular to the lead screw center P ₆₁ P
_A vertical rotation center pin 213 is attached on the base ₆₃ by caulking or the like, and an end 185 of the head moving base 185 on the nut 188 side is formed.
b is rotatably attached to the outer periphery of the vertical rotation center pin 213 via a tangential skew adjusting device 215 described later.

[0069] Therefore, according to the two-axis universal joint 210, a horizontal rotation center P ₆₂ of the horizontal rotation center pin 211 with respect to the head transfer base 185 of the lead screw 178, a vertical rotational center P ₆₃ of the vertical rotation center pin 213
Arrows o ₁ , o ₂ around two axes orthogonal to
_1, q becomes possible to freely rotate in _two two-axis directions of the direction, both ends of the lead screw 178 178a, 1
Even if the parallelism of the lead screw 178 with respect to the guide shaft 177 is deviated due to aging or the like such as wear of the pair of thrust bearings 181 and 182 supporting both ends 178a and 178b of the lead screw 178, the parallelism is maintained. ₂ perpendicular to the directions of the arrows o ₁ and o ₂ and the arrows q ₁ and q 2
It can be absorbed by the degree of freedom in the axial direction. In other words, even if the parallelism of the lead screw 178 with respect to the guide shaft 177 is deviated due to aging or the like, arrows b ₁ and b ₂ of the nut 188 by the lead screw 178.
The screw feed action in the direction can be performed smoothly without any trouble,
The high-speed seek operation of the head moving base 185 in the directions of the arrows b ₁ and b ₂ can always be performed smoothly.

(10) Description of Tangential Skew Adjustment Device Next, the tangential skew adjustment device 215 will be described with reference to FIGS. 42 to 44. The objective lens 190 for the optical disk 5 which is generated due to the vertical deviation of the spindle motor 95,
In this embodiment, the deviation of the verticality of the optical axis F of the optical axis 191 can be easily adjusted.

Therefore, in the tangential skew adjusting device 215, as shown in FIG. 43, the vertical rotation center pin 213 vertically mounted on the top 212b of the turntable 212 in the biaxial universal joint 210 described above. A flanged sleeve 216 is fixed to the outer periphery by press fitting or the like, and a screw cylinder 217 as a screw is rotatably mounted on the outer periphery of the flanged sleeve 216. A screw hole 218 is formed in an end portion 185b of the head moving base 185 on the nut 188 side so as to vertically penetrate the end portion 185b, and a male screw 217a formed on the outer periphery of the screw cylinder 217 is screwed into the screw hole 218. Are screwed (engaged) with a female screw 218a formed on the inner periphery of the screw. A-(minus) groove 219 for jig engagement is formed at the upper end of the screw cylinder 217. However, the nut 188 corresponds to a driven member.

The tangential skew adjusting device 215 uses a jig 220 as shown in FIG.
Are formed at the lower end of a cylindrical jig body 222 integrally formed,
The small diameter cylindrical portion 223 of the upper end of the inner diameter D ₁ smaller outer diameter D ₁₁ of the screw cylinder 217 is formed integrally with the small-diameter cylindrical portion 223
Both sides are configured smaller outer diameter D ₁₂ than the inner diameter D ₂ of the screw holes 218, and the upper end of the screw cylinder 217 the outer periphery of the - groove 2
A pair of-(minus) projections 224 that can be inserted into the 19 are integrally formed.

Therefore, according to the tangential skew adjusting device 215, as shown in FIG.
0 is inserted vertically into the screw cylinder 217 from above the head moving base 185, and its -projection 224 is formed.
Can be easily engaged in the −groove 219 at the upper end of the screw cylinder 217. Then, the knob 22 of the jig 220
When the finger 1 is rotated and adjusted in the directions of the arrows r ₁ and r ₂ with a finger, a screw hole 218 formed by a male screw 217 a on the outer periphery of the screw cylinder 217 is formed.
The height of the end portion 185a of the head moving base 185 can be adjusted by the screw feeding action of the female screw 218a on the inner circumference of the head. Certain arrows s ₁ , s
_The rotation is adjusted in _two directions. Then, this head moving base 1
The optical axis F of the objective lens 190 and 191 mounted in the 85 is tangential radial arrow t _1, t
_The inclination is adjusted in _two directions, and the perpendicularity of the optical axis F to the optical disk 5, that is, the tangential skew is adjusted. After the tangential skew adjustment, an adhesive is dropped into the screw hole 218 to fix the screw cylinder 217 in the screw hole 218.

(11) Description of Lead Screw Attaching Apparatus Next, referring to FIGS. 36, 37 and 38, a description will be given of the lead screw 178 attaching apparatus 230. The front and rear ends 178a and 178b of the lead screw 178 A pair of front and rear thrust bearings 181 and 1 rotatably supported
Reference numeral 82 is formed of a synthetic resin having wear resistance. The front end thrust bearing 181 is formed substantially in a cap shape, and the rear end thrust bearing 182 is formed in a cylindrical shape. The pair of front and rear thrust bearings 18
Reference numerals 1 and 182 are attached to a pair of front and rear bearing attachment pieces 231 and 232 formed integrally with the skew adjustment table 172. Then, the front and rear ends 17 of the lead screw 178
8a, 178b are a pair of front and rear thrust bearings 181, 18
2 are alternately inserted from the front and rear directions of the arrows b ₁ and b ₂ and are rotatably supported. Then, at the rear end 172a of the skew adjustment table 172, the lead screw 17
The leaf spring 183 has one set screw 2
It is detachably screwed by 34. However, a pair of positioning small pieces 235 that are bent vertically upward from both ends in the length direction of the leaf spring 183 are engaged with a pair of positioning small holes 236 formed in the skew adjustment table 172, and the leaf spring 183 is provided. The detent is done.

An elastic arm 237 is formed integrally on the front end side of the leaf spring 183 in a direction substantially orthogonal to the lead screw 178, and the front end 237 a of the elastic arm 237 causes the rear end 178 b of the lead screw 178 to move forward. by pressing a certain arrow b ₂ direction, resiliently so I pressed the front end 178a of the lead screw 178 on the inner bottom surface 181b of the shaft insertion hole 181a of the front side of the thrust bearing 181. However, the tip 2 of the elastic arm 237
At 37a, a low friction and wear resistant synthetic resin sheet 238 such as an ultra-high molecular weight polyethylene adhesive tape is attached to the contact surface of the lead screw 178. The stopper 239 formed integrally with the leaf spring 183 is connected to the lead screw 1 with the tip 237 a of the elastic arm 237 interposed therebetween.
78 at a position opposite to the rear end 178 b with a gap 240.

Then, the engagement depth of the front end 178a of the lead screw 178 into the shaft insertion hole 181a of the front end thrust bearing 181 is set to A, and the rear end thrust bearing 1
A = B, A> C when the gap between the gear 82 and the driven gear 195 of the lead screw 178 = B and the width of the gap 240 between the tip 237a of the elastic arm 237 and the stopper 239 = C. Has been set.

Therefore, according to the mounting device 230 for the lead screw 178, the elastic arm 2 of the leaf spring 183 can be used.
In a state of being pressed from the constantly arrow b ₂ direction front end 178a of the lead screw 178 on the inner bottom surface 181b of the shaft insertion hole 181a of the front side of the thrust bearing 181 by 37, that for rotating the lead screw 178 constantly stably Can be.

However, as described above, A ≦ B, A
> C, so the lead screw 178
When the lead screw 178 by the inertia at the time of seeking such fast the head transfer base 185 in the arrow b _1, b ₂ direction by the normal and reverse rotation drive is subjected to a thrust force in the arrow b ₁ direction in the fast, although the tip 237a of the elastic arm 237 of the leaf spring 183 is bent in the arrow b ₁ direction,
The tip 237a of the elastic arm 237 is
9 is abutting the arrow b ₁ direction at the time to be stopped,
Since the front end 178a of the lead screw 178 is engaged still engaged in the shaft insertion hole 181a of the front side of the thrust bearing 181, also lead screw 178 is slid maximally arrow b ₁ direction, the front end 178a thrust bearing 181 not the fall out of the shaft insertion hole 181a in the arrow b ₁ direction. Therefore, even with such inertia of the head moving base 185, the lead screw 178 does not accidentally fall off between the pair of thrust bearings 181 and 182, and high reliability can be secured.

On the other hand, at the time of maintenance, inspection, repair, etc., one stopper screw 234 fixing the leaf spring 183 is removed, and the leaf spring 183 is simply removed from the skew adjustment base 172. 239 also leaf spring 18
Since it is removed together with (3), A ≦
Based on the dimensioning of the B, and slide the lead screw 178 in the arrow b ₁ direction arrows b ₁ and the front end 178a of the shaft insertion hole 181a of the front side of the thrust bearing 181
After removing direction, to slide obliquely the lead screw 178 in the arrow b ₂ direction, and the rear end 178b from the rear end side of the thrust bearing 182 to withdraw the arrow b ₂ direction, skew the lead screw 178 It can be easily removed from the adjustment table 172. Note that the lead screw 1 with respect to the skew adjustment table 172
The mounting operation of 78 can be similarly easily performed by the reverse operation at the time of removal.

(12) Description of Thrust Bearing Device Next, referring to FIGS. 45 and 46, the thrust bearing device 2 will be described.
Explaining with respect to 45, the lead screw 178 serving as the rotating shaft is made of a metal such as stainless steel, and the thrust bearing 181 formed substantially in a cap shape is made of a wear-resistant synthetic resin. Therefore,
Compared to the case where the lead screw 178 and the thrust bearing 181 are made of metal or synthetic resin,
These lead screw 178 and thrust bearing 181
Can be kept small.

The inner diameter of the thrust bearing 181 is substantially equal to the diameter D ₂₁ of the front end 178a of the lead screw 178. small projections 246 of diameter D ₂₁ from a sufficiently small diameter D ₂₂ of the front end 178a of is integrally formed with the same center shape. And, the front end 17 of the lead screw 178
The distal end surface of the small diameter projection 246 is formed on the flat surface 248. Then, the resilient arms 237 of the leaf spring 183 the front end 178a is above the lead screw 178 which is inserted from the arrow b ₂ direction in the thrust bearing 181a
Is elastically pressed in the arrow b ₂ direction by the spring force F ₁₁ due to its spherical 247 of the distal end surface is in contact with the plane 248 two-point contact state of the distal end surface of the small-diameter protrusion 246.

Therefore, as shown in FIG. 46, as the use of the lead screw 178 at a high speed rotates for a long time,
Even if the thrust receiving surface of the small diameter projection 246 wears from the initial plane 248 to the spherical surface 248a following the spherical surface 247 of the tip surface of the lead screw 178, the contact area between the lead screw 178 and the thrust bearing 181 due to the progress of the wear. Remains within the small diameter D ₂₁ of the small-diameter projection 246, and the contact area is never expanded to the range of the diameter D ₂₁ of the front end 178 a of the lead screw 178. As a result, even if the thrust receiving surface of the small diameter projection 246 wears and advances to the spherical surface 248a, the lead screw 1
The contact area between the front end 178 a of the first screw 78 and the thrust bearing 181 is hardly increased.
8, the load torque of the rotation of the head 8 can be secured to a minimum state, so that the lead screw 178 can be driven to rotate at a high speed, and the thrust bearing device 245 optimal for performing the high-speed seek of the head moving base 185 can be realized. Since the load torque of the rotation of the screw 178 can be secured to the minimum state, the space factor can be improved by reducing the capacity of the head moving motor 192 for driving the lead screw 178 to rotate, and the size of the optical disk device 10 can be reduced.
Lightening can be promoted.

FIG. 47 shows that the thrust receiving surface 248 of the thrust bearing 181 is connected to the front end 17 of the lead screw 178.
Form than the diameter D ₂₁ of 8a to the plane of the large diameter D _23,
The front end 178 of the lead screw 178 at the plane 248
In this example, the case where a is received in the thrust is considered. In this case, when the thrust receiving surface wears from the initial plane 248 to the spherical surface 248a following the spherical surface 247 which is the distal end surface of the lead screw 178, the contact area between the lead screw 178 and the thrust bearing 181 is increased. There is to be increased significantly to the range of the diameter D ₂₁ of the lead screw 178 at the maximum, so that the load torque of the rotation of the lead screw 178 is significantly increased with the wear progresses. However, according to the configuration of the thrust bearing device 245 shown in FIG. 46, such a significant increase in the load torque of the rotation of the lead screw 178 does not occur.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various changes can be made based on the technical concept of the present invention.

[0085]

The disk drive head moving device of the present invention having the above-described structure has the following effects.

According to a first aspect of the present invention, the head moving base is rotated about a guide shaft at one end thereof by tilt adjusting means disposed between the driven member driven by the lead screw and the other end of the head moving base. The tangential skew can be adjusted by adjusting the skew. The tangential skew can be adjusted using a skew adjustment table that applies a large load to the entire head moving device. Thus, tangential skew adjustment can be performed, and a very compact tangential skew adjustment device with a simple structure can be realized. Therefore, it is possible to provide a small, lightweight, low-cost head moving device for a disk drive.

A second aspect of the present invention provides a screw for rotatably mounting the tilt adjusting means of the head moving base on the driven member, and a screw formed on the other end of the head moving base and engaged with the screw. Since it is constituted by the holes, a tangential skew adjustment device with a simple structure, small size and low cost can be obtained.

In a third aspect of the present invention, a screw hole is formed at the other end of the head moving base so as to vertically penetrate the head moving base.
A screw cylinder rotatably attached to the outer periphery of a pin attached to the upper part of the driven member and engaged with the screw hole is provided. The jig is inserted from above and is engaged with the groove for rotation operation of the screw cylinder, so the structure is very simple and the screw cylinder can be simplified by using the jig from above the head moving table. The tangential skew adjustment operation can be performed very easily.

[Brief description of the drawings]

FIG. 1 is an external perspective view of a cartridge and an optical disk device for explaining an embodiment of an optical disk device to which the present invention is applied.

FIG. 2 is an exploded perspective view illustrating a chassis structure of the optical disc device.

FIG. 3 is a partially cutaway plan view of the optical disc device.

FIG. 4 is a side view of FIG. 3;

FIG. 5: Remove the top cover of the optical disk device,
FIG. 4 is a plan view showing a cartridge insertion guide.

FIG. 6 is a plan view showing a state where a top cover and a cartridge insertion guide of the optical disk device are removed and a mechanical deck is shown.

FIG. 7 is a cross-sectional view taken along the line AA of FIG. 3 showing a lowered state of the mechanical deck.

FIG. 8 is a cross-sectional view taken along the line AA of FIG.

FIG. 9 is a sectional view taken along the line BB of FIG. 3;

FIG. 10 is an exploded front view showing a cartridge insertion guide, a resin chassis, a side frame, and an insulator.

FIG. 11 is a cross-sectional view schematically showing a relationship among a resin chassis, a cartridge insertion guide, a top cover, a side frame, and an insulator.

FIG. 12 is a plan view showing a state where the retraction of the cartridge retraction device is started.

FIG. 13 is a plan view showing a state where the retraction of the cartridge retraction device is completed.

FIG. 14 is an exploded side view of the cartridge positioning device.

FIG. 15 is a side view schematically showing a cartridge positioning state of the cartridge positioning device.

FIG. 16 is a side view showing a non-positioning state of the cartridge positioning device.

FIG. 17 is a side view showing a positioning state of the cartridge positioning device.

FIG. 18 is a front view of FIG.

19 is a plan view of FIG.

20 is an enlarged sectional view of a main part of FIG.

FIG. 21 is an enlarged sectional view of a main part of FIG. 19;

FIGS. 22A and 22B are a plan view and a side view illustrating a relationship between a slide plate and a slide cam when the cartridge positioning device is not positioned.

23A and 23B are a plan view and a side view illustrating a relationship between a slide plate and a slide cam at the time of positioning of the cartridge positioning device.

FIG. 24 is a plan view, a side view, and a front view of a cartridge pressing member of the cartridge positioning device.

FIG. 25 is a perspective view of the cartridge holding member according to the third embodiment.

FIG. 26 is a perspective plan view illustrating the entire emergency eject device.

FIG. 27 is a cross-sectional view showing the ON state of the clutch in the drive path of the cartridge retraction motor of the emergency eject device.

FIG. 28 is a sectional view showing the off state of the clutch.

FIG. 29 is a plan view showing a drive path of a disk loading motor of the disk loading device and a conversion lever of the emergency eject device.

FIG. 30 is a sectional developed view showing an ON state of a clutch in a drive path of the disk loading motor of the above.

FIG. 31 is a sectional developed view showing an off state of the clutch.

FIG. 32 is a rear view illustrating a slide cam of the disc loading device.

FIG. 33 is a perspective plan view showing a state in which the emergency eject operation rod, the conversion lever, and the slide cam of the emergency eject device have returned to their original positions.

FIG. 34 is a perspective plan view illustrating the start of operation of a conversion lever and a slide cam by the emergency eject operation rod of the above.

FIG. 35 is a perspective plan view illustrating the end of the operation of the conversion lever and the slide cam by the emergency eject operation rod.

FIG. 36 is a plan view illustrating a head moving device.

FIG. 37 is a cross-sectional plan view illustrating a lead screw, a nut, and a lead screw attaching device of the head moving device.

FIG. 38 is a sectional view taken along the line CC in FIG. 37.

FIG. 39 is a cross-sectional view illustrating the nut.

40A and 40B are a cross-sectional view and a front view illustrating a play removing nut.

FIG. 41 is a cross-sectional view illustrating an apparatus for removing play of a nut with respect to a lead screw.

FIG. 42 is a front view illustrating a tangential skew adjustment device.

FIG. 43 is a cross-sectional view illustrating a main part of the tangential skew adjusting device and a two-axis universal joint according to the third embodiment.

FIG. 44 is a view for explaining a jig of the tangential skew adjusting device of the above.

FIG. 45 is a cross-sectional view and a front view illustrating a thrust bearing device of a lead screw.

FIG. 46 is an enlarged cross-sectional view showing a main part of FIG. 45;

FIG. 47 is an enlarged cross-sectional view showing a main part of a general thrust bearing device.

[Explanation of symbols]

10 is an optical disk device which is a disk device, 170 is a head moving device, 177 is a guide shaft, 178 is a lead screw, 181 and 182 are thrust receivers, 185 is a head moving base, 185a and 185b are both ends of the head moving base,
188 is a nut which is a driven member, 190 is an objective lens, 192 is a head moving motor, 213 is a vertical rotation center pin, 215 is a tangential skew adjustment device,
216 is a sleeve with a flange, 217 is a screw cylinder which is a tilt adjusting means and a screw, 218 is a screw hole, 219 is a groove for rotation operation, 220 is a jig, 220 is a jig of the jig, and 224 is a projection of the jig.

Claims (3)

[Claims] 1. A head moving table on which an objective lens of an optical pickup is mounted, a guide shaft for guiding one end of the head moving table, a lead screw rotationally driven by a head moving motor, and the lead screw A driving member that is driven and drives the other end of the head moving table along the guide shaft, and is mounted between the driving member and the other end of the head moving member to move the head moving table. A head moving device for a disk drive, comprising: a head moving table tilt adjusting means for adjusting the rotation about the guide shaft. And a screw hole rotatably mounted on said driving member for adjusting the inclination of said head moving table, and a screw hole formed on the other end side of said head moving table and engaged with said screw. 2. The head moving device for a disk drive according to claim 1, wherein the head moving device comprises: 3. A screw hole is formed at the other end of the head moving base so as to penetrate the head moving base in a vertical direction, and is rotatably mounted on an outer periphery of a pin mounted on an upper part of the driving member. Providing a screw cylinder engaged with the screw hole, forming a rotation operation groove on the upper end surface of the screw cylinder, being inserted into the screw hole from above, and engaging with the rotation operation groove of the screw cylinder. The head moving device for a disk drive according to claim 2, further comprising a jig to be used.