JP2001184764A - Disk device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable the emergency ejection of a disk in a disk loading state. SOLUTION: A rack lever 34 which is a member to be driven of a disk tray drive mechanism 55 is manually operated via an emergency lever 141 by a metal wire-like operating member 153 inserted from an operating hole 152 formed at a front panel 1b of the main body of the disk device, by which the ejection of the disk tray by a specified length to the outside of the main body of the disk device 1 by a disk tray drive mechanism is made possible after the disk table is lowered by a disk table lifting mechanism.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a CD player and a C player.
The present invention relates to a disk device such as a D-ROM drive, and more particularly to a technical field of a disk device in which a recording and / or reproducing disk is placed on a disk tray and loaded into a disk device main body.

[0002]

2. Description of the Related Art Conventionally, CD players and CD-ROMs have been used.
In a disk device such as a drive, as shown in FIGS. 40 and 41A, a horizontally long opening 1a is formed in the front surface of a disk device main body 1 formed in a flat box shape, and a disk tray is formed from this opening 1a. 2 is attached horizontally so as to be freely taken in and out in the directions of arrows a and a '. Then, a substantially circular recess 3 is formed on the horizontal top plate 2a of the disc tray 2 formed of a synthetic resin or the like, and a recording and / or reproducing disc 4 such as a CD or CD-ROM is inserted into the recess. 42, the disc 4 is loaded horizontally by the disc tray 2 into the disc apparatus main body 1 from the direction of arrow a, as shown in FIG. Have been.

At this time, as shown in FIGS. 43 and 44,
A notch 5 is formed from the center of the recess 3 of the disc tray 2 to the end in the loading direction (the direction of arrow a), and a disc table 6 and an optical pickup 7 are provided above and below in the disc device main body 1. A disc clamper 8 is provided.

As shown in FIG. 43, when the disk tray 2 is ejected out of the disk device main body 1 in the direction of arrow a ', the disk table 6 and the optical pickup 7 in the disk device main body 1 and the disk clamper 8 are retracted by the pair of upper and lower support frames 9 and 10 in the directions of arrows b and c, which are the up and down directions of the disk tray 2 around the fulcrum shafts 11 and 12.

As shown in FIG. 44, when the loading of the disk tray 2 into the disk device main body 1 from the direction of arrow a is completed, a pair of upper and lower support frames 9, 1
0 is simultaneously driven to rotate around the fulcrum shafts 11 and 12 in the directions of arrows b 'and c'. Then, the disc table 6 and the optical pickup 7 are inserted into the notch 5 of the disc tray 2 from below in the direction of arrow b ', and the disc table 6 is fitted into the center hole 4a of the disc 4 from below.
The disk 4 is lifted upward from the disk mounting surface 3a of the recess 3 of the disk tray 2. Then, the disc 4 is chucked between the disc clamper 8 and the disc table 6, which are lowered from the direction of arrow c ', and the optical pickup 7 is brought close to the lower surface of the disc 4.

Thereafter, the disk 4 is driven to rotate by the disk table 6, and the recording and / or reproduction of the disk 4 is performed by the optical pickup 7.

[0007]

By the way, in this kind of conventional disk drive, the loading drive of the disk tray 2 into the disk drive main body 1 and the disk drive main body 1
The motor is driven to eject ejecting to the outside, and to drive the disc table 6 and the optical pickup up and down between a raised position and a lowered position.

On the other hand, in a disk loading state such as when recording and / or reproducing the disk 4, in an emergency such as when the power is suddenly cut off, the disk tray 2 is removed from the disk device main body 1 for the purpose of protecting the motor of the disk 4 and the like. It is necessary to perform an emergency eject operation for urgently ejecting the disc 4 and quickly take out the disc 4 from the disc apparatus body 1.

However, as in the prior art, the disk tray 2
In the conventional disk drive, in which the loading and ejecting of the disk table 6 and the lifting and lowering of the disk table 6 are performed by the motor drive, the motor does not operate when the power is turned off, so that the emergency eject operation cannot be performed. Was.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problem, and has as its object to provide a disk device capable of easily performing an emergency eject operation by manual operation.

[0011]

According to the present invention, there is provided a disk apparatus for loading a disk tray on which a recording and / or reproducing disk is mounted into a disk apparatus body and externally loading the disk tray. A disk tray drive mechanism driven by a motor for ejecting the disk, a disk table lifting mechanism driven by the disk tray drive mechanism to drive the disk tray up and down between a raised position and a lowered position, and a disk drive body. An operation hole formed in the front panel, into which the operation member for emergency ejection is inserted, and an operated member of a disk tray driving member manually operated by the operation member inserted into the operation hole, wherein After the mechanism lowers the disk table from the raised position to the lowered position, It is obtained by a the operated member to eject a predetermined length amount the disk tray into the disk device body outside the Kutore drive mechanism.

[0012]

The disk apparatus of the present invention having the above-described structure has a disk tray driving mechanism, a disk tray elevating mechanism driven by the disk tray driving mechanism,
A disk tray drive mechanism, and a disk table elevating mechanism by manually operating the operated member by inserting an emergency eject operation member into an operation hole formed in a front panel of the disk device main body. After the disk table has been lowered from the raised position to the lowered position, the disk tray can be ejected by a predetermined length by the disk tray drive mechanism to the outside of the disk device main body.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a disk drive according to the present invention will be described below with reference to FIGS. In addition, FIG.
The same components as those in FIG. 44 are denoted by the same reference numerals, and the description will not be repeated.

[Explanation of Disc Tray] First, FIG.
The disc tray will be described with reference to FIG.

[Explanation of Disc Tray Shape] First, FIG.
As shown in FIGS. 4 to 28, the outer periphery of the recess 3 of the disc tray 2 includes a loading direction and an ejecting direction (arrows a and a ′ direction) and a horizontal direction (arrows a and a).
Four grooves 14 are formed at four corners in a direction perpendicular to the a 'direction). These grooves 14 are formed along two radiations P from the center O of the recess 3. Four lock arms 15 serving as disk holding means are mounted in these four grooves 14.

[Description of Lock Arm] Next, as shown in FIG. 22, FIG. 23, and FIG.
Is formed of a synthetic resin or the like, and has a tip 15a
Is inserted loosely into the groove 14 toward the center O of the recess 3, and the tip 15 a of the recess 3 is inserted upward from below through the groove 14 to move from the tapered surface 3 b of the recess 3 to the position above the disk mounting surface 3 a. It is projected to. Then, the other end 1 of the lock arm 15
5b is disposed below the top plate 2a of the disc tray 2, and a pair of guide pins 16 integrally formed on both sides of the other end 15b are integrally formed on both sides of the groove 14 on the lower surface of the top plate 2a of the disc tray 2. It is slidably and rotatably held by a pair of substantially U-shaped sliding guides 17.

Therefore, the lock arm 15 is held by the groove 14 and the pair of sliding guides 17, and the pair of guide pins 16 are moved along the pair of sliding guides 17 by arrows e,
e 'is slidable in the direction e'.
The lock arm 15 is configured to be rotatable in the directions indicated by arrows f and f '.

As a result, the lock arm 15 is
a, protruding above the groove 14, arrows e and e 'in the direction parallel to the disk mounting surface 3a along the radiation P.
The lock arm 15 is configured so as to be freely movable in the horizontal direction, and the tip end 15a of the lock arm 15 is configured to be rotatable in directions indicated by arrows f and f ', which are directions substantially perpendicular to the disk mounting surface 3a.

At the free end of the groove 14, the spring support pin 18a of the spring receiving plate 18 integrally formed on the lower surface of the top plate 2a of the disc tray 2 and the lower part of the other end 15b of the lock arm 15 are integrally formed. A compression coil spring 19, which is urging means, is mounted between the spring support pin 15c and the lock arm 15 is moved and urged by the compression coil spring 19 in the direction of arrow e which is the center O side of the recess 3. The tip 15a of the lock arm 15 is
It is urged to rotate in a direction indicated by an arrow f, which is a direction separating upward from a.

The forward position of the lock arm 15 in the direction of arrow e is regulated by a pair of sliding guides 17 which also serve as a stopper, and the rotational position of the lock arm 15 in the direction of arrow i is regulated by a release means described later.

The distal end 15a of the lock arm 15 has a first and a second bent substantially in the shape of arrows f and f 'which are perpendicular to the disk mounting surface 3a.
Slopes 20 and 21 are formed.

A release arm sliding surface 2 to be described later is provided on the upper surface between the distal end 15a and the other end 15b of the lock arm 15.
The release arm sliding surface 22 is formed with a horizontal step 22a formed on the tip 15a side and the step 2
The slope 22b is formed so as to gradually decrease from 2a toward the other end 15b.

[Description of Release Lever] Next, FIGS. 27 and 3
As shown in FIGS. 5 to 39, a pair of left and right release levers 24 constituting the release means is formed of a synthetic resin or the like.
At the lower part of a, it is attached in parallel and symmetrically at both left and right positions. A pair of release arms 25 extending symmetrically in the longitudinal direction from both ends 24 a of the pair of release levers 24 in the longitudinal direction along the longitudinal direction are provided on the release arm sliding surfaces 22 of the pair of lock arms 15. It is placed on the top in a substantially orthogonal state. A vertical cam follower pin 26 integrally formed on the upper part of the central part in the longitudinal direction of the pair of release levers 24 is formed on the lower surface of the top plate 2a of the disk tray 2 in the left-right direction (arrows g, g '). Direction) in the pair of elongated holes 27.

The lengthwise ends 24a of the pair of release levers 24 are arranged between a pair of four bosses 28 integrally formed on the lower surface of the top plate 2a of the disc tray 2, and these bosses 28 Each pair screwed on the lower surface,
It is supported from below by a total of four washers 29.

Accordingly, the pair of release levers 24 are mounted movably in the directions of arrows g and g ', which are the left and right directions, along the lower surface of the top plate 2a of the disk tray 2.

A wide U-shaped end portion 31a of the cam lever 31 formed in a substantially U-shape with a sheet metal or the like is provided at the center in the length direction of the pair of release levers 24 and the top plate 2 of the disc tray 2.
a is interposed horizontally with the lower surface of the a.

A pair of cam follower pins 26 of a pair of release levers 24 penetrate through substantially crank-shaped cam grooves 32 formed symmetrically at these wide end portions 31a. A cam mechanism 33 is constituted by the cam groove 32.

[Explanation of Rack Lever] A rack lever 34 formed in a substantially L shape by a synthetic resin or the like is horizontally mounted on one side of the lower surface of the top plate 2a of the disk tray 2. Reference numeral 34 is a member to be operated of the disc tray drive mechanism 55 in the emergency eject mechanism 140 described later. The rack lever 34 has a guide groove (not shown) formed on the lower surface of the top plate 2a and parallel to the front-rear direction (arrow a, a 'direction side) which is the loading direction and the eject direction.
Are slidable in the directions of the arrows a and a 'along with the pair of washers 29 from below. And
On one side surface of the rack lever 34, a rack 35 parallel to the directions of arrows a and a 'is formed.
A pinion 36, which is rotatably driven by a motor of a disk tray drive mechanism described later, mounted inside the rack 3,
5 is engaged.

Then, the rack lever 34 is bent vertically downward from the longitudinal center of the cam lever 31 to the distal end of a distal end arm 34a integrally formed at right angles in the horizontal direction from the distal end of the rack lever 34 in the direction of arrow a '. The connecting portion 31b is inserted from above to be integrally connected.

A rack lever biasing means is provided between a spring locking portion 34b formed integrally with the rack lever 34 and a spring locking portion 37 formed integrally with the lower surface of the top plate 2a of the disk tray 2. A tension coil spring 38 is provided, and the rack lever 34 is
Is urged against the top plate 2a of the disc tray 2 in the direction of the arrow a ', and is brought into contact with a stopper 39 integrally formed on the lower surface of the front plate 2a on the front end side in the direction of the arrow a'.

On the lower surface of the top plate 2a of the disk tray 2, four stoppers 40 and a cam lever 31 are provided, each pair for positioning the pair of release levers 24 in the direction of arrow g.
Guide pins 41 for guiding both end portions 31a having a wide width.
Etc. are integrally formed.

[Explanation of Vertical Use] Next, according to the disk tray 2 configured as described above, as shown in FIGS.
Can be used vertically.

At this time, first, as shown in FIG. 24, when the disk tray 2 is ejected from the disk device main body 1 in the direction of arrow a ', as shown in FIG. It is slid in the direction a 'and is in contact with the stopper 39.

Then, the cam lever 31 is moved in the direction of the arrow a 'integrally with the rack lever 34, and the pair of cam mechanisms 3 are moved.
A pair of cam driven pins 26 is formed by a pair of cam grooves 32
Is driven in the direction of arrow g along the pair of long holes 27.

Accordingly, the pair of release levers 24 are moved in parallel in the direction of arrow g to abut against each pair of stoppers 40, and as shown in FIGS. Is moved in the direction of the arrow j on the release arm sliding surface 32 of FIG.

Thus, as shown in FIGS. 31 and 32, the four lock arms 15 are pressed by the four release arms 25 against the four compression coil springs 19 in the direction of arrow f ', and Will be retained. In this horizontal state, the four lock arms 15 are positioned at the holding positions advanced by the four compression coil springs 19 in the direction of arrow e.

Therefore, as shown in FIG.
In the vertical position, the recess 3 of the vertical disc tray 2
As shown in FIGS. 22 and 25, the recess 3 is kept in the vertical position by a simple one-touch mounting method of simply inserting in parallel from the horizontal arrow h direction toward the center O of the inside.
The four locations of the outer periphery 4b of the disk 4 inserted therein are simultaneously held by the four lock arms 15, so that the disk 4 is stably and accurately positioned at the center O in the recess 3 without rattling.

That is, as shown in FIGS. 31 and 32, when the disk 4 is inserted into the recess 3 from the direction of the arrow h, the outer circumference 4b of the disk 4 is The tip 15a is pressed against the four first slopes 20.

Then, the four lock arms 15 are retracted in the direction of arrow e 'against the four compression coil springs 19 as indicated by the dashed line, by the guiding action of the four first slopes 20, and the disk 4 Of the four lock arms 15 slides from the first slope 20 to the second slope 21 side.

At this moment, the four lock arms 15 are advanced by the four compression coil springs 19 toward the center O of the recess 3 in the direction of arrow e. Then, this time,
The outer periphery 4b of the disk 4 is pressed in the direction of arrow h by the guiding action of the four second slopes 21 of the tips 15a of the four lock arms 15 so that the disk 4 becomes parallel to the disk mounting surface 3a in the recess 3. It is crimped.

As a result, as shown in FIGS. 22 and 25, the disk 4 is stably held in the recess 3 by the four lock arms 15 without rattling, while maintaining the vertical posture. Then, an arrow e is directed toward the center O of the recess 3.
Since the four lock arms 15 moving forward in the directions can press the outer periphery 4b of the disk 4 evenly in the direction of arrow e, the disk 4 can be accurately positioned at the center O of the recess 3.

[Explanation of Disc Loading Operation] Next, when the front panel 2b of the disc tray 2 is pushed in the direction of arrow a after the loading of the disc, an eject switch described later is operated, and as shown in FIG. The pinion 36 is driven by the arrow i by the motor of the driving mechanism.
The rack 35 of the rack lever 34 is driven forward in the
Is driven in the direction of arrow a.

Then, the disk tray 2 is pulled together with the rack lever 34 in the direction of the arrow a via the tension coil spring 38, and as shown in FIG. Is loaded in the direction of arrow a.

The disk tray 2 that has been completely loaded into the disk device main body 1 in the direction of arrow a comes into contact with a later-described tray loading stopper in the disk device main body 1 and stops. At this time, since the disk 4 can be stably held vertically without rattling and can be loaded, the disk 4 can be used even if the vertical posture of the disk device main body 1 shown in FIG. is there.

After the disc tray 2 is stopped, as shown in FIG. 36, the motor of the disc tray driving mechanism causes the pinion 36 to continue the overstroke rotation in the direction of arrow i.

Then, as shown in FIG. 36, the rack lever 34 with respect to the disc tray 2 moves from the reverse position shown by the dashed line to the forward position shown by the solid line against the extension coil spring 38 by the overstroke S in the direction of arrow a. To the cam lever 31 by the tip arm 34a of the rack lever 34.
Is moved by the overstroke S in the direction of arrow a with respect to the disc tray 2 while being guided by the pair of guide pins 41.

The pair of cam follower pins 2 are formed by the pair of cam grooves 32 of the pair of cam mechanisms 33 of the cam lever 31.
6 is driven in the direction of arrow m along a pair of long holes 27,
The pair of release levers 24 are moved in parallel in the direction of the arrow g ', and as shown in FIGS. 33 and 34, these release arms 25 move on the release arm sliding surface 22 of the lock arm 15 from the step portion 22a on the slope. 22b is moved in the direction of arrow j '.

Then, as shown in FIGS. 33 and 34,
The four lock arms 15 are rotated by the four compression coil springs 19 around the four guide pins 16 to the non-holding position in the direction of the arrow f, and the second slopes 21 at the tips 15 a of the four lock arms 15 are The disk 4 is released from the outer periphery 4b in the direction indicated by the arrow f, and the holding of the disk 4 is released.

At about the same time, as shown in FIG. 23, the disk table 6 is fitted into the center hole 4a of the disk 4 from the direction of the arrow b 'as shown in FIG. Magnet 6a
As a result, the chucking plate 8a of the disc clamper 8 is attracted, and the disc clamper 8 magnetically chucks the outer periphery of the center hole 4a of the disc 4 on the disc table 6 in the direction of the arrow c '. The recess 3 is floated in the direction of the arrow h 'from the disk mounting surface 3a.

At this time, as described above, since the disk 4 is loaded with the four lock arms 15 accurately positioned at the center O of the recess 3 of the disk tray 2, the disk table 6 is placed on the disk 4. The center hole 4a can be smoothly fitted in the direction of the arrow b ', so that the disk table 6 and the disk clamper 8 can smoothly perform the magnetic chucking operation of the disk 4. Therefore, no chucking mistake of the disk 4 occurs.

When the disk chucking is completed, a gap G ₁ is formed between the disk 4 and the disk mounting surface 3 a of the recess 3 of the disk tray 2, as shown in FIGS. 33 and 34. , the gap G ₂ is formed between the distal end 15a of the outer circumference 4b and four locking arms 15 of the disk 4.

Therefore, after that, the disk table 6 is driven to rotate by the spindle 45 of the spindle motor 44 shown in FIG. 23, and the disk 4 is driven to rotate integrally with the disk table 6, so that recording and / or reproducing of the disk 4 is performed. At this time, the disc 4 can rotate stably with no contact with the disc tray 2 and the four lock arms 15.

[Explanation of Disc Eject Operation]
At the time of ejection, when an eject button 43 attached to the front panel 1b of the disk device main body 1 shown in FIG. 26 is pressed, an eject switch described later is operated, and the pinion 36 shown in FIG. The motor is driven in reverse rotation in the direction of arrow i '.

Then, as described later, the disk table 6 and the disk clamper 8 are disengaged from the disk 4 in the directions indicated by the arrows b and c by the reverse operation during the loading, as shown in FIG. Thus, after the outer periphery 4a of the disk 4 is held by the four lock arms 15, the disk 4 is moved by the disk tray 2 as shown in FIG.
As shown in the figure, the disc is ejected out of the disk device main body 1 in the direction of arrow a '.

Incidentally, if the disk 4 is pulled in the direction of arrow h 'after the ejection shown in FIG.
As indicated by a one-dot chain line in FIG. 2, the leading end 15 a of the four lock arms 15 is guided by the second slope 21,
Since the four lock arms 15 escape in the direction of the arrow e 'against the four compression coil springs 19, the disk 4 can be easily removed from between the tips 15a of the four lock arms 15 in the direction of the arrow h' with a single touch.

[Explanation of Disk Device Body] Next, FIGS.
The main body of the disk device will be described with reference to FIG.

[Description of Box-shaped Configuration of Disk Device Body] First, as shown in FIG. 5, the disk device body 1 is formed of a synthetic resin or the like, and is combined with a front panel 1b having a horizontally long opening 1a. The chassis 1c is formed in a flat box shape by a horizontal chassis 1c formed of resin or the like, and a cover 1d formed of a stainless thin plate or the like that covers the upper, lower, left, right, and rear portions of the chassis 1c. The printed circuit board 1d is horizontally mounted below the chassis 1c.

[Explanation of Disc Tray Guide]
As shown in FIGS. 1 to 6, the disk tray 2 is guided by a pair of left and right tray guides 51 formed at both left and right positions on the chassis 1c, and the disk tray 2 is inserted into the disk device main body 1 through the opening 1a. Chassis 1c
It is mounted on the top so as to be able to move in and out horizontally from the directions of arrows a and a '.

[Explanation of Stopper of Disk Tray] Then, a tray loading stopper 52 for regulating the loading completion position of the disk tray 2 loaded into the disk device main body 1 in the direction of arrow a and an arrow a 'out of the disk device main body 1. A tray eject stopper 53 for regulating the ejection completion position of the disc tray 2 ejected in the direction is integrally formed on the chassis 1c.

[Explanation of Tray Driving Mechanism] Then, on one side of the chassis 1c, the disc tray 2 is loaded and ejected in the directions of arrows a and a 'at a position close to the front panel 1a. A disk tray drive mechanism 55 is attached.

This disk tray drive mechanism 55 is similar to that shown in FIG.
As shown in FIGS. 4 to 17, the motor 56 includes a motor 56, a pinion 36 that is an output gear for driving the rack lever 34, and a gear train 57 that connects the motor 56 and the pinion 36. In the gear train 57, a worm 58 fixed to a motor shaft 56a of a motor 56, and a clutch movable gear 60 integrated with a worm wheel 59 constantly meshed with the worm 58 are provided.
And a clutch fixed gear 61 that is rotated at a fixed position so that the clutch movable gear 60 is engaged and disengaged. Note that all gears from the clutch fixed gear 61 to the pinion 36 in the gear train 57 are the chassis 1
It is rotatably attached to the outer periphery of the plurality of gear support shafts 62 on the position c.

[Explanation of Clutch] The clutch 63 incorporated in the gear train 57 holds the worm wheel 59 and the clutch movable gear 60 so as to be rotatable, and the arrow k around the fulcrum shaft 64 on the chassis 1c. Clutch driven lever 65 rotatably mounted in k 'direction
And arrows m and m 'around the fulcrum shaft 66 on the chassis 1c.
And a clutch lever 67 rotatably mounted in the direction.

Then, the leading ends of the clutch driven lever 65 and the clutch lever 67 intersect at a substantially right angle, and
A cam driven pin 68 attached to the tip of the clutch driven lever 65 is engaged from above into a cam groove 69 which is an arc-shaped elongated hole provided at the tip of the clutch lever 67,
A cam mechanism 70 is formed by the cam follower pins 68 and the cam grooves 69. The cam groove 69 is formed approximately in an arc around the fulcrum shaft 64, and the radius of curvature of the cam groove 69 is larger than the radius of rotation of the cam follower pin 68.

The clutch lever 67 is rotationally urged in the direction of arrow m by a torsion coil spring 71, which is a clutch lever urging means attached around the fulcrum shaft 66, and is brought into contact with the stopper 72 on the chassis 1c. .
And, the clutch lever 67 by the torsion coil spring 71
With the rotational force in the direction of arrow m, the clutch driven lever 65 is rotationally urged in the direction of arrow k by the cam action of the cam mechanism 70, and the clutch movable gear 60 is meshed with and urged by the clutch fixed gear 61. ing.

The gear train 57 and the clutch 63 in the tray drive mechanism 55 are arranged in a recess 73 formed on the chassis 1c, and as shown in FIG.
The upper portions of the gear train 57 and the clutch 63 are covered with a gear train cover 74 such as a thin stainless plate.

[Explanation of Eject Spring] Next, as shown in FIG. 1, FIG. 2, FIG. 13 and FIG.
A downward projection 75 is integrally formed at a position deviated in the direction of the arrow a at one side of the lower surface of the slider, and the eject slider 7 pushed in the direction of the arrow a by this projection 75 is formed.
6 is slidably mounted in the directions of arrows a and a 'along a guide groove 77 formed in the chassis 1c and parallel to the directions of arrows a and a'.

A tension coil spring 80 as an eject spring is provided between a pair of spring locking portions 78 and 79 integrally formed at the lower end of the eject slider 76 and the lower portion of the chassis 1c. 8
The ejection slider 76 is urged to slide in the direction of arrow a 'by 0.

[Description of Disk Tray Locking Mechanism] Next, as shown in FIGS. 1, 2, 13 and 19, one side of the lower surface of the disk tray 2 is displaced in the direction of arrow a. A downwardly directed projection 82 is integrally formed, and a disc tray lock mechanism 83 for locking and unlocking the projection 82 is mounted on the chassis 1c at a position deviated in the direction of arrow a.

The disk tray lock mechanism 8
3 is an arrow n on the chassis 1c via a fulcrum shaft 84;
Lock lever 85 rotatably mounted in n 'direction
And a projection 82 on the top of the tip of the lock lever 85.
Is integrally formed with a lock portion 85a for locking the lock. A tension coil spring 88 serving as a lock lever urging means is provided between a pair of spring engagement portions 86 and 87 integrally formed on the tip of the lock lever 85 and the chassis 1c. The lock lever 85 is urged to rotate in the direction of the arrow n and is in contact with the stopper 82 on the chassis 1c.

The cam follower pin 89 integrally formed at the end of the lock lever 85 on the fulcrum shaft 84 side, and the rack lever 34 attached to the lower surface of the disk tray 2
A cam mechanism 91 for rotating the lock lever 85 in the directions of arrows n and n 'is constituted by a cam 90 integrally formed on the side opposite to the rack 35 at the end in the direction of arrow a.

[Description of Rack Lever Lock Mechanism]
As shown in FIGS. 1, 2, 13, and 18 to 20, the rack lever 3 attached to the lower surface of the disk tray 2
A rack lever lock mechanism 93 that is locked and unlocked by a push-push method is mounted between the end of the chassis 4 in the direction of the arrow a in FIG.

The push-push type rack lever lock mechanism 93 includes a leaf spring 95 fitted in a shallow recess 94 formed on the chassis 1c and a screw integrally formed on the chassis 1c in the recess 94. A lock lever 97 loosely fitted on the outer periphery of the stop boss 96 and disposed on the leaf spring 95; a lock pin 98 fixed vertically on the tip of the lock lever 97; A horizontal plate portion 99 integrally formed on a side of the rack 35 side at an end thereof in a state of being displaced above the rack 35;
A lock groove 100 is formed on the lower surface of the horizontal plate 99.

The lock lever 97 is fixed to the boss 9 by a flanged screw 101 screwed to the boss 96 from above.
6 and the lock lever 97 is
Are supported so as to be rotatable in horizontal directions indicated by arrows q and q 'and vertical directions indicated by arrows r and r'. Then, the leaf spring 95 urges the lock lever 97 to rotate in the direction of the arrow r. The free end 97a of the lock lever 97 is formed in a small width recess 10 formed on the chassis 1c.
2 and is configured such that the swing width of the lock lever 97 in the directions of arrows q and q ′ is regulated by the concave portion 102.

The lock groove 100 formed on the lower surface of the horizontal plate portion 99 is provided with a wide entrance 100a opened at the end of the horizontal plate portion 99 in the direction of arrow a, and the entrance 10a.
0a, a linear path 100b extending linearly in a direction parallel to the rack lever 34 in the direction of the arrow a ', and a zigzag path 100c extending laterally in a zigzag manner from the end of the linear path 100b in the direction of the arrow a'. , This zigzag path 1
Detour route 10 detoured from 00c to a straight route 100b
0d. A lock portion 100e for locking the lock pin 98 is formed in the middle of the zigzag path 100c. Further, between the straight path 100b and the lock portion 100e of the zigzag path 100c, a slope 100f gradually descending in the direction of the arrow a 'and a reverse running prevention step 100g are provided, and the lock section 100e of the zigzag path 100c is provided. A reverse running prevention step 100h is also provided between the detour route 100d and the detour route 100d, and the straight route 100b and the detour route 100d are connected at the same height and flush.

[Description of Disc Table Lifting Mechanism] Next, as shown in FIGS. 1, 2, 5, and 8 to 10, two large and small openings 1 formed substantially in the center of the chassis 1c.
A disk table elevating mechanism 106 for driving the disk table 6 up and down in the directions of arrows b and b ', which are the up and down directions, is mounted in the heads 04 and 105.

This disk table elevating mechanism 106
Large opening 10 formed in the direction of arrow a of chassis 1c
4, the main movable frame 107 and the chassis 1
and a sub-movable frame 108 disposed in the small opening 105 formed on the side of the arrow a ′ in FIG. In addition,
The main movable frame 107 and the sub movable frame 108
Is formed of a synthetic resin or the like.

A pair of left and right ends 107a of the main movable frame 107 on the side opposite to the sub movable frame 108 in the direction of arrow a are moved to the chassis 1c by a pair of left and right fulcrum parts 109 so that arrows b, b ′ Direction. Also, an end 108a of the sub movable frame 108 on the side of the arrow a 'opposite to the main movable frame 107 is directed vertically to the chassis 1c by a pair of left and right fulcrum shafts 110 integrally formed on both left and right sides thereof. It is mounted so as to be rotatable in s and s' directions.
The tip 107b at the center of the main movable frame 107 in the direction of the arrow a 'and the bifurcated tip 108b of the sub movable frame 108 in the direction of the arrow a are opposed to each other from the directions of the arrows a and a'. , These tips 107b, 10
8b are connected to each other by a connecting portion 111 so as to be freely rotatable in the directions of arrows b and b 'and arrows s and s', which are vertical directions.

As shown in FIG. 8A, the connecting portion 111 is a bifurcated tip 108 of the auxiliary movable frame 108.
b, a generally upward U-shaped connecting arm 112 disposed between
And a pair of left and right fulcrum shafts 113 parallel to the pair of left and right fulcrum shafts 110 are integrally formed on both left and right sides of the connecting arm 112. The connecting arm 112 is rotatably mounted between the forked ends 108b of the sub movable frame 108 by a pair of left and right fulcrum shafts 113.

A screwing boss 114 is formed vertically and integrally at substantially the center of the connecting arm 112 in the left-right direction, and a vibration drum formed of rubber or the like on the outer periphery of the boss 114 is formed as a hollow drum. Insulator 115 for absorption
Are fitted. The leading end 107a of the main movable frame 107 is fitted into an annular groove 116 formed on the middle outer periphery of the insulator 115 in the vertical direction.
Note that the insulator 115 is pressed from above by a flanged screw 117 screwed to the boss 114 from above, and is held on the outer periphery of the boss 114.

As shown in FIG. 8 (B), a pair of left and right fulcrum portions 109 are formed by rubber or the like on the outer periphery of a screw boss 118 which is integrally formed vertically on the chassis 1c. The insulator 119 for vibration absorption formed into a shape is fitted, and the arrow a of the main movable frame 107 is fitted.
A pair of left and right ends 107a on the left and right sides is fitted in an annular groove 120 formed on the outer periphery of the insulator 119 in the vertical direction, and the insulator 119 is screwed to the boss 118 from above by a flanged screw 121.
Are pressed from above and held on the outer periphery of the boss 118.

As shown in FIGS. 1, 2, 11 and 12, the spindle motor 44 is provided with a plurality of screws 1 at a position offset from the main movable frame 107 in the direction of arrow a '.
Disk table 6 fixed by a pin 23 to the upper end of its spindle 45
Are arranged above the main movable frame 107.

[Explanation of the cam mechanism of the disk table elevating mechanism] Next, as shown in FIGS. 1, 2, 7, 9, and 10, the disk table elevating mechanism 106 is A cam mechanism 126 is provided which drives the main movable frame 107 to rotate in the directions of arrows b and b 'by rotating and driving the disk table 6 in the directions of arrows b and b'. I have.

The cam mechanism 126 includes a pair of left and right guide rails 1 integrally formed on one side of the small opening 105 of the chassis 1c on one side of the recess 73 of the chassis 1c.
27, a slider slidable on the chassis 1c in the directions of arrows a and a ', a cam groove 129 formed on the side of the sub-movable frame of the cam slider 128, and a sub-movable frame. Arrow a,
The cam groove 1 is integrally formed on one side surface of the intermediate portion in the a 'direction.
29 and a cam driven pin 130 which is loosely fitted in the cam 29. The cam slider 128 is formed of a synthetic resin, and the cam slider 128 slides in the direction of arrow a 'by a tension coil spring 131 which is a cam slider biasing means provided between the cam slider 128 and the chassis 1c. It is urged and is in contact with the stopper 132 on the chassis 1c. The cam groove 129 has a low portion 129a, an inclined portion 129b, and a high portion 129c.

The driving means of the cam slider 128 is constituted by the tip arm 34a of the rack lever 34, and the cam slider 128 is configured to be pushed and slid in the direction of arrow a by the tip arm 34a. .

[Explanation of Disk Table] Next, FIG.
As shown in FIG. 12 and FIG. 12, the disk table 6 has an annular disk mounting surface 6b on which the disk 4 is mounted on the outer peripheral upper surface, and the center hole 4
A centering hub 6c having a truncated cone shape into which a is fitted is formed, and an annular chucking magnet 6a is embedded in the center of the upper surface of the centering hub 6c.

[Explanation of Disk Clamper] As shown in FIGS. 3 to 5, 11 and 12, the disk clamper straddles the upper position of the disk tray 2 which is horizontally moved in and out from the directions of arrows a and a 'on the chassis 1c. Then, a clamper holder 134 is horizontally mounted on the upper part of the chassis 1c. As shown in FIG. 2, the clamper holder 134 is attached to a pair of left and right clamper holder mounting portions 135 integrally formed at the upper ends of both right and left sides of the chassis 1c at intermediate positions in the directions of arrows a and a 'by using a pair of left and right screws 136. Screwed from above.

A circular hollow portion 137 is formed horizontally just above the disk table 6, which is the central portion of the clamper holder 134, and a circular hole 138 is formed in the lower central portion of the hollow portion 137. I have. Then, a disk clamper 8 formed into a disk shape by a synthetic resin or the like is loosely fitted into the circular hollow portion 137 by a flange 8b integrally formed on the outer periphery of the upper end thereof, and the disk clamper 8 projects downward from the circular hole 138. Then, the flange 8b is in contact with the lower flange 137a of the circular hollow portion 137. An annular disk pressing surface 8c is formed on the lower surface of the outer periphery of the disk clamper 8, a truncated cone-shaped recess 8d is formed on the lower surface of the center, and a magnetic plate such as an aluminum plate is formed on the upper portion of the recess 8d. The chucking plate 8a is buried horizontally.

[Description of Emergency Eject Mechanism] Next, as shown in FIGS. 1, 4, 14, 15, and 17, one side of the gear train 57 of the chassis 1c, near the front panel 1b. At the position, an emergency eject mechanism 140 that operates the clutch 63 and the rack lever 34 that is the operated member of the disk tray drive mechanism 55 is attached.

This emergency eject mechanism 14
0 has an emergency lever 141 which is an emergency eject operation means formed of a sheet metal or the like;
This emergency lever 141 is attached to the lower part of the chassis 1c. Then, a linear guide groove 143 formed in the emergency lever 141 is loosely fitted to a guide pin 142 integrally formed at a lower portion of the chassis 1c, and the end of the emergency lever 141 in the direction of the arrow a is placed on the end. The formed guide pin 143 is formed in the substantially crank-shaped guide groove 14 formed in the chassis 1c.
5 is loosely fitted.

Then, an arrow a is formed by the guide pin 144.
A projection 146 pushed in one direction is integrally formed on one side surface of the rack lever 34. Further, a projection 67a integrally formed on one side of the clutch lever 67 of the clutch 63 is provided with a notch 14 formed on one side of the recess 73 of the chassis 1c.
7, a cam follower pin 148 formed on the projecting piece 67a and an emergency lever 141.
A cam mechanism 150 is formed by the cam surface 149 formed on the side surface on the clutch 63 side.

The emergency lever 141 includes a pair of guide pins 142 and 144 and a guide groove 143,
The guide pin 144 and the cam surface 149 are disengaged from the protrusion 146 and the cam follower pin 148 as shown in FIG. And the cam surface 149 is the projection 1
Between the emergency lever 46 and the cam driven pin 148 in the engaged state (forward movement position).
41 is configured to be movable in the directions of arrows t and t '.
The emergency lever 141 is mounted on the chassis 1
(c) is biased backward to a disengaged position (return position) in the direction of arrow t 'by a tension coil spring 151 which is an emergency lever biasing means provided between the cam follower pin 68 of the clutch lever 67. And the projection 1 of the rack lever 34
Unexpected interference of the emergency lever 141 with respect to 46 is prevented.

Then, the emergency lever 14
When the emergency lever 1 is returned to the non-engagement position (return position), the operated portion 141a integrally formed at the end of the emergency lever 141 in the direction of the arrow a 'is moved to the front panel 1.
It is configured to be located immediately behind the emergency operation hole 152 formed in FIG.

[Description of Switches] Next, as shown in FIGS. 1 to 3, the front panel 1b of the disk drive body 1
To have eject button 43 is attached, the direction of the arrow a 'end of the eject button 43 and a disk eject switch SW ₁ is a printed circuit board 1e is a micro switch which is ON-OFF operation by a front panel 2b of the tray 2 Mounted on the department. The arrow a of the ejection completion detection switch SW ₃ is the printed circuit board 1e by the loading completion switch SW ₂ and the disk tray 2 by the rack lever 34 is a micro switch which is ON-OFF operation is a micro switch which is ON-OFF operation and The switches SW ₂ and SW ₃ are mounted on the end on the side of the a ′ direction, and project through the through hole 155 formed in the chassis 1 c and protrude above the chassis 1 c.

[Description of Optical Pickup] Next, FIGS.
As shown in FIG. 5, an opening 157 is formed in the main movable frame 107 on the side of the disk table 6 in the direction of arrow a, and a carriage 7b having the objective lens 7a of the optical pickup 7 is provided in the opening 157 with the arrow a. It is movably mounted in the direction a '.

At this time, the carriage 7b is driven by a pair of guide shafts 158 attached to the lower part of the main movable frame 107 on the left and right sides of the opening 157 in parallel with the directions of arrows a and a '.
Are guided to be movable in the directions of arrows a and a '. Then, a rack 163 in which a pinion 162 driven forward and reverse via a gear train 161 and a stepping motor 160 which constitutes an example of a linear motor 159 attached to the main movable frame 107 is attached to one side of the carriage 7b. By driving, the carriage 7b is driven at a predetermined pitch in the directions of arrows a and a '.

The spindle motor 44 and the stepping motor 159 mounted on the main movable frame 107 are electrically connected to the printed board 1e via a flexible printed board (not shown).

[Explanation of Operation of Disk Device Body] Next, the disk tray drive mechanism 55, the disk table elevating mechanism 106 of the disk device body 1 configured as described above,
The operation of driving the disk tray 2 by the emergency eject mechanism 140 and the like will be described in order.

[Ejection completion state of disk tray]
First, as shown in FIGS. 24 and 27, when the disk tray 2 is completely ejected from the inside of the disk device main body 1 in the direction of arrow a ', the abutted portion 2c of the disk tray 2 shown in FIG. The tray-eject stopper 53 of the chassis 1c is stopped by being abutted from the direction of arrow a ', and the eject completion detection switch 155 shown in FIG. 1 is turned off.

When the ejection is completed, as shown in FIG. 9, the cam slider 128 is moved backward in the direction of arrow a 'by the tension coil spring 131, and the cam follower pin 130 of the sub movable frame 108 is moved to the cam groove 129.
Is lowered to the lower part 129a.

As a result, as shown in FIG.
The sub movable frame 108 is rotated in the direction of arrow s about the fulcrum shaft 110, and the main movable frame 107 is rotated in the direction of arrow b about the fulcrum 109 by the load of the disk table 6, the spindle motor 44, the optical pickup 7, and the like. Thus, the disk table 6 is lowered below the position where the disk tray 2 is inserted.

In this ejection completed state, FIG.
As shown in FIG. 5, the clutch movable gear 60 constituting the clutch 63 in the gear train 57 of the disk tray drive mechanism 55 is engaged with the clutch fixed gear 61 by the urging force of the torsion coil spring 71, and the clutch 63
Is held in the transmission state.

[Disk Loading Operation by Disk Tray] Next, in this ejection completed state, as shown in FIGS. 25 and 28, the disk 4 is inserted into the recess 3 of the disk tray 2 in the direction of arrow h. After the outer periphery 4b of the disk 4 is held by the four lock arms 15 as shown in FIG. 1, the front panel 2b of the disk tray 2 is lightly pushed in the direction of arrow a.

Then, the eject switch S shown in FIG.
W ₁ is OFF operated, the disc tray driving mechanism 55
Motor 56 is driven to rotate forward.

Then, as shown in FIG.
As a result, the pinion 36 is driven to rotate forward in the direction of the arrow i through the gear train 57 including the worm 58, the worm wheel 59, the clutch movable gear 60 and the clutch fixed gear 61, and the pinion 36 drives the rack 35 in the direction of the arrow a. .

When the rack lever 34 integrated with the rack 35 is driven in the direction of arrow a, the tension coil spring 38 is moved by the rack lever 34 as described above.
1, the disk tray 2 is pulled in the direction of arrow a, and as shown in FIGS. 1 and 3B, the disk tray 2 is automatically loaded into the disk device body 1 from the direction of arrow a. Is done.

Then, as shown in FIGS. 1 and 2, the abutted portion 2d of the disk tray 2 after loading is brought into contact with the tray loading stopper 52 of the chassis 1c and stopped. loading completion detection switch SW ₂ is turned ON, the loading completion of the disc tray 2 is detected.

Immediately before the disc tray 2 comes into contact with the tray loading stopper 52, the projection 75 of the disc tray 2 comes into contact with the eject slider 76 as shown in FIG.
Along the guide groove 77 in the direction of arrow a.

Then, the extension coil spring 80 is pulled in the direction of arrow a by the eject slider 76, and the ejection force of the disk tray 2 is automatically charged to the extension coil spring 80.

On the other hand, the loading completion detection switch SW
After completion of loading the disc tray 2 is detected by _2, carried out continuously a positive rotational drive to the motor 56 of the disk tray drive mechanism 55 has passed a predetermined time, after its predetermined time, once slightly reverse rotation A sequence that automatically stops after that is incorporated in the software (F / W).

Then, the drive operation of the overstroke S of the rack lever 34 as described with reference to FIG. 36 is performed by the forward rotation of the motor 56 after the completion of the loading of the disk tray 2 is detected. The disk tray lock mechanism 83 is moved by the movement of the rack lever 34 in the direction of arrow a due to the overstroke S.
, The locking operation of the rack lever 34 by the rack lever locking mechanism 93, the releasing operation of the holding state of the disk 4 on the disk tray 2, and the lifting operation of the disk table 6 by the disk table lifting mechanism 106. The operation of mounting (chucking) the disk 4 on the disk 6 is performed.

That is, first, the disc tray 2 comes into contact with the tray loading stopper 52 from the direction of arrow a.
After the disc tray 2 is stopped, the motor 56 is continuously rotated forward, as shown in FIG.
The rack lever 34 is moved in the direction of the arrow a with respect to the disk tray 2 against the tension coil spring 38 by the overstroke S.

At this time, the disk tray lock mechanism 83 shown in FIG. 19 is provided with the lock lever 85 at almost the same time when the disk tray 2 is brought into contact with the tray loading stopper 52, as shown by the one-dot chain line in FIG. The cam follower pin 89 rides on the cam 90 of the rack lever 34,
The lock lever 85 rotates in the direction of the arrow n ′ against the extension coil spring 88 and escapes, and the protrusion 8 of the disc tray 2
2 indicates an arrow a with respect to the lock portion 85a of the lock lever 85.
Go into the direction side.

Next, at the moment when the rack lever 34 starts to move in the direction of the arrow a due to the overstroke S, as shown by the solid line in FIG. Is disengaged in the direction of arrow a, the lock lever 85 is rotated in the direction of arrow n by the tension coil spring 88, and the lock portion 85a enters the projection 82 of the disc tray 2 in the direction of arrow a '.

As a result, the lock portion 8 of the lock lever 85
5a prevents the protrusion 82 of the disk tray 2 from moving in the direction of the arrow a ', and the disk tray 2 is locked at the position where it abuts against the tray loading stopper 52.

Next, the rack lever lock mechanism 93 shown in FIGS. 18 to 20 is moved by the overstroke S of the rack lever 34 in the direction of the arrow a and by a slight return operation in the direction of the last arrow a '. As shown in FIGS. 19 and 20, while the lock lever 97 rotates in the directions of arrows q and q 'and in the directions of arrows r and r', the lock pin 98 is inserted into the lock groove 100 as shown in FIGS. Inserted relatively from the direction of arrow a '. At this time, the lock pin 98 is moved from the entrance 100a of the cam groove 100 to the straight path 1
00b and the slope 100f of the zigzag path 100c and the stepped portion 100g, and travels in the directions of arrows u ₁ and u ₂ to reach the lock portion 100e. And the lock part 100e
, The lock pin 98 is automatically locked.

At this time, the lock operation of the lock pin 98 of the rack lever lock mechanism 93 is a so-called push-push type lock operation.
It will be locked at the position moved in the direction.

When the overstroke S of the rack lever 34 moves in the direction of arrow a, the pair of left and right release levers 24 shown in FIG. 36 is driven in the direction of arrow g ', as shown in FIG. , Four lock arms 1
5, the holding state of the outer periphery of the disk 4 on the disk tray 2 is automatically released.

On the other hand, in the disk table elevating mechanism 106 shown in FIGS. 5, 7 to 10, the tip arm 34a of the rack lever 34 is moved in the direction of the arrow a by the overstroke S of the rack lever 34 so that the cam mechanism 12 is moved.
The cam slider 128 of No. 6 is pushed out in the direction of arrow a against the tension coil spring 131 from the backward movement position shown in FIG. 9 to the forward movement position shown in FIG.

Then, as shown in FIG. 10, the cam follower pin 130 of the sub movable frame 108 is
8 cam groove 129 from the lower part 129a to the inclined part 129b.
The movable sub-frame 108 is pushed up to a high place 129c through the shaft, and the auxiliary movable frame 108 is moved from the lowered position shown in FIG. 5A to the raised position shown in FIG. Is driven to rotate.

The tip 107b of the main movable frame 107 is driven upward by the tip 108b of the sub movable frame 108 via the connecting portion 111, and the main movable frame 107 is also moved from the lowered position shown in FIG. The main movable frame 107 is driven to rotate in the direction of the arrow b 'to the raised position shown in FIG.

As a result, the disc table 6 and the optical pickup 7 are driven to move upward from the lowered position shown in FIG. 5A to the raised position shown in FIG. The objective lens 7a of the optical pickup 7 is inserted into the notch 5 of the disc tray 2 by an arrow b '.
Inserted from the direction.

Then, as shown in FIG. 12, the centering hub 6c of the disk table 6 is fitted into the center hole 4a of the disk 4 on the disk table 6 from the direction of the arrow b '. Surface 6
The disk 4 is pushed up in the direction of arrow b 'by b.

At this time, the disk pressing surface 8c of the disk clamper 8 is pushed up by the disk 4 in the direction of the arrow c, and the flange 8b of the disk clamper 8 is pressed.
Is pushed up to an intermediate position in the vertical direction of the circular hollow portion 137 of the clamper holder 134, and the disk clamper 8 is brought into a non-contact state with the clamper holder 134.

At this time, the disc clamper 8 is operated by the chucking magnet 6a of the disc table 6.
The chucking plate 8a is sucked in the direction of arrow c ', and the disk 4 is magnetically chucked on the disk table 6 by the disk clamper 8.

Then, as shown in FIG. 23, the disk 4 is automatically mounted on the disk table 6 by the series of disk mounting operations, and the mounted disk 4 is mounted on the disk tray 2 as shown in FIG. Surface 3a
Is automatically lifted in the direction of the arrow c, which is above.

By the movement of the rack lever 34, which is one drive source, in the direction of arrow a due to the overstroke S, the disk 4 by the four lock arms 15 is moved.
The disk 4 is mounted on the disk table 6 by mechanically releasing the holding state of the outer periphery of the disk 4 and mechanically driving the disk table 6 upward. Can be accurately obtained.

As a result, as shown in FIG.
At the moment when the centering hub 6c of the disk table 6 that is raised in the direction is loosely and shallowly fitted into the center hole 4a of the disk 4 from the direction of the arrow b ', the holding state of the outer periphery of the disk 4 by the four lock arms 15 is released. can do. This operation timing is determined by the cam slider 12.
The shape can be easily and accurately set by the shape of the cam groove 129 which is the cam No. 8.

As a result, when the disk 4 is mounted on the disk table 6, the state in which the outer periphery of the disk 4 is held by the four lock arms 15 and the magnetic chucking operation of the disk 4 by the disk clamper 8 interfere with each other. There is no. Therefore, while the outer periphery of the disk 4 is held by the four lock arms 15, the disk 4
The center hole 4a of the disk table 6 is forcibly fitted into the centering hub 6c of the disk table 6, and no inconvenience such as damaging the disk 4 occurs.
The magnetic disk can be smoothly chucked on the disk table 6 while the disk 4 is smoothly and accurately fitted to the outer peripheral taper surface of the disk.

After the disk 4 is automatically mounted on the disk table 6, as shown in FIG. 5B, the objective lens 7a of the optical pickup 7 is
Is brought close to the lower surface.

Therefore, after this, the spindle motor 44
Disk table 6 and disk clamper 8
The rack 163 of the carriage 7b is driven via the gear train 162 by the stepping motor 160 of the linear motor 159 of the optical pickup 7 shown in FIG.
Are driven in the directions of arrows a and a 'along a pair of guide shafts 158 to move the objective lens 7a in the directions of arrows a and a', thereby performing desired recording and / or reproduction of the disk 4. it can.

[Ejecting Operation of Disc by Disc Tray] After recording and / or reproduction of the disc 4, FIG.
And by pressing the eject button 43 shown in FIG. 4, or ON operation of the ejection switch SW _1, or the eject command signal from a host computer is output, 14 to
The motor 56 of the disk tray drive mechanism 55 shown in FIG.
Is a reverse operation at the time of disc loading, and is a sequence in which the disk is driven once in the normal rotation direction and then driven in the reverse rotation direction.

Then, the rack lever 34 is returned slightly in the direction of the arrow a once and then moved in the direction of the arrow a 'by the reverse operation at the time of disc loading, and the rack lever 34 at this time is moved in the direction of the arrow a. 18 to 20, the rack lever lock mechanism 93 shown in FIGS. 18 to 20 performs a push-push type lock release operation.

That is, as shown in FIGS. 19 and 20,
The lock pin 98 of the lock lever 97 moves from the lock portion 100e in the lock groove 100 to the step portion 1 of the zigzag path 100c.
Proceed through 00h to detour path 100d in the arrow u ₃ direction, the locking of the rack lever 34 is automatically released.
Then, by the movement of the arrow a 'direction of the rack lever 34 after this, the lock pin 98 is advanced in the arrow u ₄ directions from the detour path 100d to the linear path 100b, doorway 10
0a exits in the direction of arrow a.

When the lock of the rack lever 34 by the rack lever lock mechanism 93 is released, the disk tray lock mechanism 83 holds the locked state of the disk tray 2. As shown at 36, the pinion 36 is driven to rotate in the reverse direction in the direction of the arrow i ', and the rack lever 34 is moved from the position shown by the solid line to the position shown by the dashed line in FIG. The disk tray 2 is moved in the direction of arrow a 'by the overstroke S.

Then, as shown in FIG. 5A, the disk table 6 and the optical pickup 7 are lowered in the direction of the arrow b by the disk table lifting / lowering mechanism 106 as shown in FIG. As described above, while the disk table 6 and the disk clamper 8 are separated from the disk 4 in the directions of the arrows b and c,
As shown in FIG. 22, the outer periphery of the disk 4 is automatically held again by the four lock arms 15. That is,
At this time, as shown in FIGS. 7 and 9, the movement of the rack lever 34 in the direction of the arrow a 'causes the cam slider 12 of the cam mechanism 126 of the disc table elevating mechanism 106 to move.
8 is pulled back in the direction of the arrow a ′ by the extension coil spring 131, and the cam driven pin 130 of the sub movable frame 108 is moved.
Is pushed down from the high portion 129c of the cam groove 129 to the low portion 129a through the inclined portion 129b. Then, the sub movable frame 108 is driven to rotate around the fulcrum shaft 110 from the raised position shown in FIG. 5B to the lowered position shown in FIG.
07 from the rising position shown in FIG. 5B,
Is lowered in the direction of arrow b to the lowering position shown in FIG. Then, the disk table 6 and the optical pickup 7 mounted on the main movable frame 107 are moved from the raised position shown in FIG. 5B to the lowered position shown in FIG.
Down in the direction.

When the rack lever 34 is moved in the direction of the arrow a 'to the position shown by the one-dot chain line in FIG. 36, as shown by the one-dot chain line in FIG. Is the cam 9 of the rack lever 34
When the lock lever 85 rides on the disk tray 2, the lock lever 85 is rotated in the direction of arrow n 'against the tension coil spring 88, and the lock of the disk tray 2 is released.

As shown in FIG. 36, the pinion 3
6 is continuously driven in the reverse direction in the direction of arrow i ', whereby the tip arm 34a of the rack lever 34 pushes the stopper 39 of the disk tray 2 in the direction of arrow a'.
The disk tray 2 is automatically ejected from the disk device main body 1 in the direction of the arrow a 'together with the rack lever 34.

Then, as shown in FIGS. 24 and 27, the disc tray 2 is completely ejected in the direction of the arrow a ', and the abutted portion 2c of the disc tray 2 is moved to the eject stopper 53 shown in FIG. When the disc tray 2 is stopped by abutting from the direction a ', the ejection completion detection switch 155 is turned off again, and the motor 56 is automatically stopped.

[Emergency Ejection Operation] The disk device main body in an emergency such as when the power is turned off due to a power failure or some failure in the loading state of the disk tray 2 shown in FIGS. 1 and 3 to 5B. When the emergency eject for taking out the disk 4 from the inside of the disk drive 1 is performed, an emergency eject operation member is inserted into an emergency operation hole 152 formed in the front panel 1b of the disk device main body 1 as shown in FIG. Is pushed in the direction of the arrow a.

Then, the operated portion 141a of the emergency lever 141 is pushed in the direction of the arrow a by the wire-like operating member 153, and the emergency lever 141 is guided while being guided by the guide pins 142, 144 and the guide grooves 143, 145. It is pushed in the direction of arrow t against the tension coil spring 151 from the non-engaged position (return position) shown in FIG. 15 to the engaged position (forward position) shown in FIG.

Then, as shown in FIG. 17, first, the cam follower pin 148 of the clutch lever 67 is pushed in the direction of the arrow m 'by the cam surface 149 of the emergency lever 141, and the clutch lever 67 is pressed. Is driven to rotate in the direction of arrow m '.

Then, as shown in FIG.
0, the clutch driven lever 65 is rotated in the direction of arrow k ', the clutch movable gear 60 of the clutch 63 is disengaged from the clutch fixed gear 61 in the direction of arrow k', and the clutch 63 is switched to the non-transmission state, and the pinion 36 Can rotate freely.

When the emergency lever 141 is further pushed in the direction of the arrow t, the guide pin 144 of the emergency lever 141 is moved to the rack lever 34 while the clutch 63 is kept in the non-transmission state, as shown in FIG. Is pushed in the direction of arrow a, and the rack lever 34 is pushed out in the direction of arrow a against the extension coil spring 38.

Then, the lock of the rack lever 34 by the rack lever lock mechanism 93 is released as in the case of the normal ejection.

Then, when the wire-like operation member 153 is pulled out from the emergency operation hole 152 in the direction of arrow a ',
The emergency lever 141 is pulled back in the direction of arrow t 'by the tension coil spring 151 from the engagement position (forward position) shown in FIG. 17 to the non-engagement position (return position) in FIG. 38 pulls the disc tray 2 back in the direction of arrow a '. At this time, since the clutch 63 has already been switched to the non-transmission state, the pinion 36
Spins lightly.

When the rack lever 34 is pulled back from the position indicated by the solid line in FIG. 36 to the position indicated by the alternate long and short dash line in the direction of the arrow a ', as in the normal ejecting operation, the disc eject operation by the disc tray is performed. 7 and FIG. 9, the cam slider 128 of the cam mechanism 126 of the disk table elevating mechanism 106 is pulled back in the direction of the arrow a 'by the extension coil spring 131, and the sub-movable frame 129 is moved. Is the fulcrum shaft 11
The main movable frame 107 is rotated in the direction of the arrow s from the raised position shown in FIG. 5B to the lowered position shown in FIG. 5A with the main movable frame 107 shown in FIG. It is lowered in the direction of arrow b from the raised position to the lowered position shown in FIG. And the main movable frame 10
7 is mounted on the disk table 6 shown in FIG.
Is lowered in the direction of arrow b from the raised position shown in FIG. 5 to the lowered position shown in FIG. And this disk table 6
, The disc tray lock 83 is unlocked.

At the moment when the lock of the disk tray 2 is released, as shown in FIG.
The eject slider 76 is slid along the guide groove 77 along the guide groove 77 from the position shown by the dashed line to the position shown by the solid line in FIG. Is pushed in the direction of arrow a '.

As a result, the disk tray 2 is automatically ejected from the disk device main body 1 by a predetermined length (about 15 mm to about 20 mm) in the direction of arrow a '. Therefore,
Thereafter, the user can easily eject the disk tray 2 in the direction of the arrow a 'by easily putting the hand on the front panel 2b of the disk tray 2, so that the disk 4 can be easily removed from the disk tray 2.

According to the emergency eject mechanism 140 shown in FIGS.
The clutch movable gear 60 of the clutch 63 provided therein is always meshed with the worm 58 by a worm wheel 59 integrated therewith, and the clutch movable gear 60 meshes with the clutch fixed gear 61 in the directions of arrows k and k '. The clutch driven lever 65 to which the clutch movable gear 60 is attached and the tip of the clutch lever 67 intersect at a substantially right angle, and the cam driven pin 68 of the clutch driven lever 65 is connected to the cam driven pin. Clutch lever 67 having a radius of curvature larger than the turning radius of 68
The tip of the clutch driven lever 65 and the tip of the clutch lever 67 are directly connected by the cam mechanism 70 engaged in the arc-shaped cam groove 69.

The cam mechanism 70 can lightly rotate the clutch driven lever 65 in the directions of arrows k and k 'by rotating the clutch lever 67 in the directions of arrows m and m'. The function of the clutch lever 67 is to restrict the free rotation in the directions indicated by the arrows k and k ', and the cam mechanism gives priority to the operation from the clutch lever 67 side.

Therefore, according to the structure of the clutch 63, during normal operation, the clutch movable gear 60 is unlikely to be disengaged from the clutch fixed gear 61, and the transmission state of the gear train 57 can be maintained stably. At the time of sea ejection, there is a feature that the clutch movable gear 60 can be easily disengaged from the clutch fixed gear 61 with a relatively light force (weak force).

According to the disk table elevating mechanism 106 shown in FIGS. 1, 2, 5 and 7, the main movable frame 107 is moved to the chassis 1c by a pair of fulcrum portions 109.
And three insulators 11 interposed in the connecting portion 111
The insulators 115 and 119 can reliably absorb vibrations applied from the outside during recording and / or reproduction of the disk 4 because the elastic members 5 and 119 support the disk 4 elastically.

Therefore, it is possible to prevent a data error or the like of the disk 4 due to the vibration beforehand, and it is possible to remarkably improve the recording and / or reproducing characteristics and reliability.

As described above, one embodiment of the present invention has been described.
The present invention is not limited to the embodiments described above, and various modifications can be made based on the technical idea of the present invention.

[0155]

The disk apparatus of the present invention having the above-described structure includes a disk tray driving mechanism, a disk tray lifting / lowering mechanism driven by the disk tray driving mechanism, and a member to be operated of the disk tray driving mechanism. Have
By manually operating the operated member by inserting the operation member for emergency eject into the operation hole formed in the front panel of the disk device main body, after the disk table elevating mechanism lowers the disk table from the raised position to the lowered position, The disk tray drive mechanism allows the disk tray to be ejected by a predetermined length out of the disk device main body.
Alternatively, in a disk loading state such as during reproduction or the like, in a case where power is suddenly cut off, the disk can be quickly and safely ejected by a manual operation in an emergency.

[Brief description of the drawings]

FIG. 1 is a plan view illustrating the inside of a disk device main body and a rack lever in an example of a disk device to which the present invention is applied.

FIG. 2 is a perspective view illustrating the inside of a disk device main body.

FIG. 3 is a plan view illustrating a state where loading of a disk into a disk device main body by a disk tray is completed.

FIG. 4 is a perspective view of FIG.

5 (A) is a cross-sectional side view taken along the line EE of FIG. 3 for explaining the middle of loading and ejecting, and FIG. 5 (B) is a diagram for explaining a loading completed state. It is sectional drawing in the EE arrow.

FIG. 6 is a perspective view showing a disk tray, a rack lever, and a cam lever.

FIG. 7 is a perspective view showing a main part of a disk table elevating mechanism.

8 (A) is an enlarged cross-sectional view taken along line FF of FIG. 1 and illustrates an insulator.
FIG. 8B is an enlarged cross-sectional view taken along line GG of FIG.

FIG. 9 is an enlarged cross-sectional view taken along the line HH of FIG. 1 for explaining the lowering operation of the disk table by the disk table lifting mechanism.

FIG. 10 is an enlarged cross-sectional view taken along the line HH of FIG. 1 for explaining the operation of the disk table elevating mechanism.

FIG. 11 is an enlarged cross-sectional view taken along the line II of FIG. 1 for explaining the process of mounting the disk on the disk table.

FIG. 12 is an enlarged cross-sectional view taken along the line II of FIG. 1 and illustrating the completion of mounting the disk on the disk table.

FIG. 13 is a plan view illustrating a positional relationship of a disk tray drive mechanism, a disk tray lock mechanism, a rack lever lock mechanism, and an emergency eject mechanism with respect to a rack lever.

FIG. 14 is an exploded perspective view of a disk tray drive mechanism.

FIG. 15 is an enlarged plan view of a disk tray drive mechanism and an emergency eject mechanism.

FIG. 16 is an enlarged sectional view taken on line JJ of FIG. 1;

FIG. 17 is an enlarged plan view of the disk tray drive mechanism and the emergency eject mechanism, illustrating an emergency eject operation.

18A is an enlarged side view of the rack lever lock mechanism as viewed from the direction of arrows KK in FIG. 1, and FIG. 18B is an enlarged side view of L-L in FIG. FIG. 4 is a plan view as viewed from the arrow L.

FIG. 19 is a partially cutaway plan view illustrating a disk tray lock mechanism and a rack lever lock mechanism.

FIG. 20 is an exploded cross-sectional view illustrating a lock operation and an unlock operation of the rack lever lock mechanism.

FIG. 21 is an enlarged sectional view taken along the line MM of FIG. 1;

FIG. 22 is a cross-sectional view of the holding state of the disk on the disk tray taken along line AA of FIG. 28;

FIG. 23 is a sectional view showing a chucking state of the disk by the disk table of FIG. 22;

FIG. 24 is a perspective view showing an ejected state of the disc tray when the disc tray is used vertically.

FIG. 25 is a perspective view showing a state where a disk is vertically mounted on the disk tray of FIG. 24;

26 is a perspective view showing a state in which loading of the disk into the disk device main body of FIG. 24 is completed.

FIG. 27 is a side view of the disc tray of FIG. 24.

FIG. 28 is a side view of the disk tray of FIG. 25.

FIG. 29 is a perspective view of the same lock arm.

30A is a plan view showing a state in which the lock arm of FIG. 29 is mounted on a disk tray, and FIG.
(B) of FIG. 30 is a cross-sectional view taken along line BB of (A) of FIG. 30.

FIG. 31 is a cross-sectional view taken along the line CC of FIG.

FIG. 32 is a cross-sectional view taken along line DD in FIG.

FIG. 33 is a cross-sectional view showing a released state of the disk holding shown in FIG. 31.

FIG. 34 is a cross-sectional view showing a released state of the disk holding shown in FIG. 32;

FIG. 35 is a plan view showing a mutual relationship among the lock arm, a pair of release levers, a cam lever, and a rack lever.

36 is a plan view showing a driving state of a pair of release levers by a cam lever at the time of an overstroke of the rack lever of FIG. 35.

FIG. 37 is a cross-sectional view illustrating a structure for attaching a release lever to the disk tray of the above.

FIG. 38 is a perspective view showing a cam mechanism provided between a release lever and a cam lever of the above.

FIG. 39 is a perspective view showing a rack lever and a pinion according to the third embodiment.

FIG. 40 is a perspective view of an ejected state of a disk when the conventional disk device is used horizontally.

FIG. 41 is a cross-sectional view showing a horizontal use and a vertical use as viewed from arrows EE in FIG. 40;

FIG. 42 is a perspective view showing a completed loading state of a disk when the conventional disk device is used horizontally.

FIG. 43 is a side view illustrating a disk table in the disk device body and a state in which the disk is released from chucking by the disk clamper.

FIG. 44 is a side view for explaining a disk chucking state of a disk by a disk table and a disk clamper in the disk device main body.

[Explanation of symbols]

1 is a disk device main body, 1b is a front panel of the disk device main body, 2 is a disk tray, 4 is a disk, 6 is a disk table, 34 is a rack lever as an operated member, 55 is a disk tray drive mechanism, 56 is a motor, 1
06 is a disk tray elevating mechanism, 107 is a main movable frame, 108 is a sub movable frame, 126 is a cam mechanism, 14
0 is an emergency eject mechanism, 141 is an emergency lever which is an emergency eject drive member, 152 is an operation hole, and 153 is an emergency eject operation member.

Claims (1)

[Claims] A disc tray driving mechanism driven by a motor for loading a disc tray on which a recording and / or reproducing disc is placed into a disc device main body and ejecting the disc tray outside the disc device; A disk table lifting mechanism driven by a driving mechanism to drive the disk tray up and down between a raised position and a lowered position; formed on a front panel of the disk device main body;
An operation hole into which an operation member for emergency eject is inserted; and an operated member of the disk tray driving member manually operated by the operation member inserted into the operation hole, wherein the disk is moved by the disk table elevating mechanism. An operating member for ejecting the disk tray by a predetermined length from the disk device main body by the disk tray drive mechanism after the table is lowered from the raised position to the lowered position.