JPH07153161A - Disk device - Google Patents

Abstract

PURPOSE:To perform the operation of emergency eject in the disk device loading the disk while holding it on a disk tray, by a simple mechanism and comparatively slight operating force. CONSTITUTION:In the disk device loading the disk while holding it on the disk tray by four lock arms, a rack lever 34 loading the disk tray and releasing the hold of disk made by the lock arms is provided. A clutch 63 is provided in a gear train 57 of a disk tray driving mechanism 55 driving the rack lever 34, and the clutch 63 is changed over to the non-transmitting state by an emergency lever 141, then the disk tray is automatically ejected by an eject spring.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a CD player and a CD-recorder.
The present invention relates to a disk device such as a ROM drive, and more particularly, to a device for mounting a recording and / or reproducing disk on a disk tray and loading it in the disk device main body.

[0002]

2. Description of the Related Art Conventionally, CD players and CD-ROMs
In a disk device such as a drive, as shown in FIGS. 40 and 41 (A), a horizontally elongated opening 1a is formed on the front surface of a disk device main body 1 formed in a flat box shape, and a disk tray is opened from this opening 1a. 2 is attached horizontally in the directions of arrows a and a ′ so that it can be freely taken in and out. 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 the disc 4 for recording and / or reproducing such as CD and CD-ROM is formed in this recess. 42, the disc 4 is horizontally loaded on the disc mounting surface 3a, and then the disc 4 is horizontally loaded by the disc tray 2 into the disc device main body 1 from the direction of arrow a as shown in FIG. Has been done.

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

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

Then, as shown in FIG. 44, when the disc tray 2 is completely loaded into the disc device main body 1 in the direction of the arrow a, a pair of upper and lower support frames 9 and 1 are provided.
0 is driven to rotate simultaneously about the fulcrum shafts 11 and 12 in the directions of the arrows b'and c '. Then, the disc table 6 and the optical pickup 7 are inserted in the notch 5 of the disc tray 2 from below in the direction of the arrow b ', and the disc table 6 is fitted into the center hole 4a of the disc 4 from below,
The disc 4 is floated upward from the disc mounting surface 3 a of the recess 3 of the disc 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 the arrow c ′, and the optical pickup 7 is brought close to the lower surface of the disc 4.

After that, the disk 4 is rotationally driven by the disk table 6, and recording and / or reproduction of the disk 4 is performed by the optical pickup 7.

[0007]

By the way, in the conventional disc apparatus of this type, as shown in FIGS. 40 and 41 (A), the disc mounting surface 3a of the recess 3 of the disc tray 2 is mounted.
It is a dedicated machine for horizontal use in which the disk 4 is horizontally placed and loaded, and it is not suitable for vertical use.

That is, as shown in FIG. 41 (B), when the disc tray 2 is used while standing vertically with the disc device main body 1, the recess 3 becomes vertical, so that the disc 4 is placed vertically in the recess 3. However, there is a problem in that the disc 4 cannot be placed on the disc tray 2 because the disc 4 slides down in the direction of the arrow d due to its own weight at the tapered surface 3b portion of the outer periphery of the recess 3 even if it is intended to be placed on the disc tray 2.

On the other hand, in particular, in the CD-ROM drive industry, there is an increasing demand for vertical use of the disk device for the purpose of installing the disk device in a narrow space as the computer becomes smaller.

The present invention has been made to meet the above-mentioned demand, and one disk device can be used both horizontally and vertically, and even when vertically used,
For a disc device that can be loaded stably and vertically without disc rattling, especially for an emergency eject operation with a simple mechanism and with a relatively light operating force. It is an object.

[0011]

DISCLOSURE OF THE INVENTION To achieve the above object, a disk device of the present invention is a disk for loading and ejecting a disk for recording and / or reproducing into a main body of the disk device by inserting the disk into the recess. A tray, a disc holding means attached to the disc tray for holding the outer periphery of the disc inserted into the recess, and a disc holding means attached to the disc tray to release the holding state of the disc by the disc holding means. In the disc device, the disc device is provided with the releasing means and a disc table which is provided in the disc device main body and on which the disc loaded by the disc tray is mounted. In contrast, it moves in the loading direction and the eject direction. A rack lever for driving the releasing means by moving the disk tray in the loading direction, a rack lever urging means for urging the rack lever in the eject direction with respect to the disk tray, and the disk. A disk tray drive mechanism that is attached to the device body and drives the rack lever in the loading direction and the eject direction, a disc tray drive mechanism including a gear train and a pinion, and the rack lever that is attached to the disk device body and locks the loaded rack lever. Then, a push-push type rack lever lock mechanism whose lock is released by the rack lever, and an ejecting force which is attached to the disk device main body and is charged by the loaded disk tray. And a clutch that is provided in the gear train of the disc tray drive mechanism and can be switched between a transmission state and a non-transmission state by a clutch lever, and is attached to the front panel side of the disc device body and is attached to the outside of the front panel. And an emergency eject operation means for switching the clutch to the non-transmission state by the clutch lever and unlocking the rack lever lock mechanism by the rack lever.

[0012]

According to the disk device of the present invention constructed as described above, the disk lever mounted on the disk tray is held by moving and urging the rack lever mounted on the disk tray in the eject direction by the rack lever urging means. The means is biased to the holding state to hold the disk inserted in the recess of the disk tray by the disk holding means. The loading and ejecting of the disc tray are performed by a disc tray drive mechanism including a motor attached to the main body of the disc device and driving a rack lever, a gear train, and a pinion. At that time, at the time of loading, the eject force of the loaded disc tray is charged in the eject spring, and the rack lever is locked by the push-push type rack lever lock mechanism attached to the disc apparatus main body. During the emergency eject,
The clutch lever of the clutch provided in the gear train of the disc tray drive mechanism is operated by the emergency operating means operated from the outside of the front panel of the disc device main body to switch the clutch to the non-transmission state, and the rack lever The rack lever lock mechanism is unlocked by and the disc tray is automatically ejected by the eject spring.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a disk device to which the present invention is applied will be described below with reference to FIGS. 40-
The same reference numerals are given to the same structural parts as in FIG. 44, and duplicated description will be omitted.

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

[Description of Shape of Disc Tray] First, referring to FIG.
4 to 28, on the outer periphery of the recess 3 of the disc tray 2, the front-rear direction (arrow a, a'direction) and the left-right direction (arrow a, a) which are the loading direction and the eject direction.
Four grooves 14 are formed at four corners of the direction (perpendicular to the a'direction). These grooves 14 are formed along the two radiations P from the center O of the recess 3. Further, four lock arms 15 which are disk holding means are mounted in these four grooves 14.

[Description of Lock Arm] Next, as shown in FIG. 22, FIG. 23, and FIG. 29 to FIG.
Is formed of synthetic resin or the like, and has a tip 15a.
Is loosely fitted into the groove 14 toward the center O side of the recess 3, and the tip 15a thereof is inserted through the groove 14 from the lower side to the upper side so as to extend from the tapered surface 3b of the recess 3 to the upper side of the disk mounting surface 3a. Is projected to. And the other end 1 of the lock arm 15
5b is arranged under 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 arranged along the pair of sliding guides 17 by the arrow e,
A pair of guide pins 16 that are slidable in the e'direction
The lock arm 15 is configured to be rotatable in the directions of the arrows f and f ′ around the center.

As a result, the lock arm 15 has the tip 15
In the state where a is projected above the groove 14, arrows e, e'that are parallel to the disk mounting surface 3a along the radiation P are shown.
The lock arm 15 is configured to be horizontally movable in the horizontal direction, and the tip end 15a of the lock arm 15 is configured to be rotatable in the directions of arrows f and f'which are directions substantially perpendicular to the disk mounting surface 3a.

The spring support pin 18a of the spring receiving plate 18 and the lower end of the other end 15b of the lock arm 15 are integrally formed on the lower surface of the top plate 2a of the disc tray 2 at the free end of the groove 14. A compression coil spring 19 which is an urging means is attached between the spring support pin 15c and the spring support pin 15c, and the compression coil spring 19 urges the lock arm 15 to move in the direction of the arrow e, which is the center O side of the recess 3. , The tip 15a of the lock arm 15 is the disk mounting surface 3
It is rotationally biased in the direction of arrow f, which is a direction away from a in the upward direction.

The forward movement 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 stoppers, and the rotational position of the lock arm 15 in the direction of arrow i is regulated by a releasing means which will be described later.

The tip end 15a of the lock arm 15 is bent into a chevron shape in the directions of arrows f and f'which are directions perpendicular to the disk mounting surface 3a.
Slopes 20 and 21 are formed.

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

[Explanation of Release Lever] Next, referring to FIG. 27 and FIG.
As shown in FIGS. 5 to 39, the pair of left and right release levers 24 forming the release means are formed of synthetic resin or the like, and the pair of release levers 24 are used as the top plate 2 of the disc tray 2.
It is attached in parallel and symmetrically at the left and right sides at the bottom of a. Then, the pair of release arms 25 symmetrically extending diagonally in the front-rear direction from both ends 24a in the longitudinal direction along the front-rear direction of the pair of release levers 24 are the release-arm sliding surfaces 22 of the pair of lock arms 15. It is placed in a state of being substantially orthogonal to the top. Then, a vertical cam follower pin 26 integrally formed on the upper part of the longitudinal center of the pair of release levers 24 is formed on the lower surface of the top plate 2a of the disc tray 2 in the left-right direction (arrows g, g '). Direction) and is loosely fitted in the pair of elongated holes 27.

Both ends 24a of the pair of release levers 24 in the longitudinal direction 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 in total. Each pair screwed to the bottom surface,
It is supported from below by a total of four washers 29.

Therefore, the pair of release levers 24 are attached along the lower surface of the top plate 2a of the disc tray 2 so as to be movable in the left and right directions of arrows g and g '.

The wide ends 31a of the cam lever 31 formed of a sheet metal or the like in a substantially U-shape have central portions in the longitudinal direction of the pair of release levers 24 and the top plate 2 of the disc tray 2.
It is horizontally interposed between the lower surface of a.

A pair of cam driven pins 26 of the pair of release levers 24 penetrate through a substantially crank-shaped cam groove 32 symmetrically formed at both ends 31a of these wide widths. A cam mechanism 33 is configured by the cam groove 32.

[Description of Rack Lever] Then, a rack lever 35 formed of synthetic resin or the like in a substantially L shape is horizontally attached to one side of the lower surface of the top plate 2a of the disc tray 2. The rack lever 34 has arrows a, a'along a guide groove (not shown) parallel to the front-rear direction (arrow a, a'direction side) which is the loading direction and the eject direction formed on the lower surface of the top plate 2a. And is supported by a pair of washers 29 from below. Then, the arrow a,
A rack 35 that is parallel to the a'direction is formed, and the pinion 3 is rotationally driven by a motor of a disc tray drive mechanism, which will be described later, mounted in the disc device body 1.
6 is meshed with the rack 35.

The tip end of the tip arm 34a integrally formed at a right angle in the horizontal direction from the tip of the rack lever 34 on the arrow a'direction side is vertically bent downward from the center of the cam lever 31 in the longitudinal direction. The connecting portion 31b is inserted from above and connected integrally.

A rack lever urging means is provided between a spring engaging portion 34b integrally formed on the rack lever 34 and a spring engaging portion 37 integrally formed on the lower surface of the top plate 2a of the disc tray 2. A tension coil spring 38 is installed, and the tension coil spring 38 causes the rack lever 34 to move.
Is urged toward the top plate 2a of the disc tray 2 in the direction of the arrow a ', and abuts against the stopper 39 integrally formed on the lower surface of the top plate 2a on the front end side from the direction of the arrow a'.

On the lower surface of the top plate 2a of the disc tray 2, a pair of release levers 24 for positioning in the direction of arrow g, a total of four stoppers 40 and cam levers 31 are provided.
Pair of guide pins 41 for guiding both ends 31a of the wide width of the
Etc. are integrally molded.

[Description of Vertical Use] Next, according to the disc tray 2 configured as described above, as shown in FIGS.
It can be used vertically by standing upright.

At this time, first, as shown in FIG. 24, when the disc tray 2 is ejected from the disc device main body 1 in the direction of arrow a ', the rack lever 34 is moved by the tension coil spring 38 as shown in FIG. It is slid in the a'direction and abuts on the stopper 39.

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

Therefore, the pair of release levers 24 are moved in parallel with each other in the direction of the arrow g so as to abut against the pair of stoppers 40, and as shown in FIGS. It is moved in the direction of arrow j on the release arm sliding surface 32 and reaches the step 22a.

As a result, as shown in FIGS. 31 and 32, the four lock arms 15 are pressed against the four compression coil springs 19 by the four release arms 25 in the direction of the arrow f ', and are horizontally formed. Retained. Then, in this horizontal state, the four lock arms 15 are positioned by the four compression coil springs 19 in the holding position advanced in the arrow e direction.

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

That is, as shown in FIGS. 31 and 32, when the disc 4 is inserted into the recess 3 from the direction of the arrow h, the outer periphery 4b of the disc 4 has four lock arms 15 as shown by the alternate long and short dash line. It is pressed against the four first slopes 20 of the tip 15a.

Then, due to the guiding action of these four first slopes 20, the four lock arms 15 are retracted in the direction of the arrow e'against the four compression coil springs 19 as shown by the alternate long and short dash lines, and the disc 4 is moved. The outer periphery 4b of the four slides from the first slope 20 to the second slope 21 side of the tips 15a of the four lock arms 15.

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

As a result of the above, as shown in FIG. 22 and FIG. 25, the disk 4 is held in a vertical position and stably held by the four lock arms 15 so that there is no rattling in the recess 3. Then, the arrow e points toward the center O of the recess 3.
The four lock arms 15 that move forward in the direction can evenly press the four locations on the outer circumference 4b of the disk 4 in the direction of the arrow e, so that 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 mounting the disc, the eject switch described later is operated, and as shown in FIG. The pinion 36 is moved to the arrow i by the motor of the drive mechanism.
Is driven to rotate in the positive direction, and the rack 35 of the rack lever 34 is driven.
Is driven in the direction of arrow a.

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

The disc tray 2 which has been completely loaded into the disc device body 1 in the direction of the arrow a comes into contact with a tray loading stopper, which will be described later, in the disc device body 1 and stops. At this time, since the disk 4 can be stably held vertically without any rattling and can be loaded, it can be used even if the vertical posture of the disk device body 1 shown in FIG. 25 is turned upside down. is there.

After the disc tray 2 is stopped, as shown in FIG. 36, the pinion 36 continues to rotate in the direction of arrow i for an overstroke by the motor of the disc tray drive mechanism.

Then, as shown in FIG. 36, with respect to the disc tray 2, the rack lever 34 resists the tension coil spring 38 from the backward movement position of the one-dot chain line to the forward movement position of the solid line, and only the over stroke S is in the direction of the arrow a. To the cam lever 31 by the tip arm 34a of the rack lever 34.
Is guided by the pair of guide pins 41, and is moved by the overstroke S in the direction of arrow a with respect to the disc tray 2.

Then, the pair of cam driven 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 the pair of elongated holes 27,
The pair of release levers 24 are translated 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 22a to the sloped surface. 22b in the direction of arrow j '.

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

At about the same time, as will be described later, as shown in FIG. 23, the disc table 6 is fitted into the central hole 4a of the disc 4 from the direction of the arrow b ', and the chucking of the disc table 6 is performed. Magnet 6a
The chucking plate 8a of the disc clamper 8 is attracted by the disc clamper 8, and the disc clamper 8 magnetically chucks the outer periphery of the center hole 4a of the disc 4 onto the disc table 6 from the direction of the arrow c ', and the disc 4 of the disc tray 2 is moved. It is floated in the direction of arrow h ′ from the disk mounting surface 3 a of the recess 3.

At this time, as described above, the disk 4 is loaded while being accurately positioned in the center O of the recess 3 of the disk tray 2 by the four lock arms 15, so that the disk table 6 of the disk 4 is loaded. The central hole 4a can be smoothly fitted in the direction of the arrow b ', and the magnetic chucking operation of the disc 4 by the disc table 6 and the disc clamper 8 can be smoothly performed. Therefore, a chucking error of the disk 4 does not occur.

In the completed state of the disc chucking, as shown in FIGS. 33 and 34, a gap G ₁ is formed between the disc mounting surface 3a of the recess 3 of the disc tray 2 and the disc 4. A gap G ₂ is formed between the outer periphery 4b of the disk 4 and the tips 15a of the four lock arms 15.

Accordingly, thereafter, the disk table 6 is rotationally driven by the spindle 45 of the spindle motor 44 shown in FIG. 23, and the disk 4 is rotationally driven integrally with the disk table 6 to record and / or reproduce the disk 4. When performing, the disc 4 can be stably rotated in a non-contact state with respect to the disc tray 2 and the four lock arms 15.

[Explanation of Disc Eject Operation]
When the eject button 43 attached to the front panel 1b of the disc apparatus main body 1 shown in FIG. 26 is pressed at the time of ejection, an eject switch described later is operated, and the pinion 36 shown in FIG. 36 causes the disc tray drive mechanism to operate. The motor is driven to rotate in the reverse direction in the arrow i'direction.

Then, in the reverse operation at the time of loading described above, as will be described later, substantially simultaneously with the disc table 6 and the disc clamper 8 being separated from the disc 4 in the directions of arrows b and c, as shown in FIG. As shown in FIG. 25, 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. 7, the disc is ejected out of the main body 1 in the direction of arrow a '.

It should be noted that if the disk 4 is pulled in the direction of the arrow h'after the ejection shown in FIG.
As shown by the chain double-dashed line in FIG. 2, by the guiding action of the second inclined surface 21 of the tips 15a of the four lock arms 15,
Since the four lock arms 15 escape in the arrow e'direction 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 arrow h'direction with one touch.

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

[Explanation of Box-shaped Structure of Disk Device Main Body] First, as shown in FIG. 5, the disk device main body 1 is made of synthetic resin or the like, and is combined with a front panel 1b having a horizontally elongated opening 1a formed therein. A flat chassis is formed by a horizontal chassis 1c formed of resin or the like and a cover 1d formed of a stainless thin plate or the like covering the top, bottom, left and right, and the rear part of the chassis 1c. The printed circuit board 1d is horizontally attached to the bottom of the chassis 1c.

[Explanation of Guide for Disc Tray] Next,
As shown in FIGS. 1 to 6, the disc 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 disc tray 2 is inserted through the opening 1a into the disc device main body 1. Chassis 1c
It is mounted on the top so that it can be inserted and removed horizontally from the directions of arrows a and a '.

[Description of Stopper of Disc Tray] Then, the tray loading stopper 52 for controlling the loading completion position of the disc tray 2 loaded in the disc device main body 1 from the direction of arrow a and the arrow a'outside the disc device main body 1 are shown. A tray eject stopper 53 that regulates the eject completion position of the disc tray 2 ejected in the direction is integrally formed on the chassis 1c.

[Explanation of Tray Drive 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 disc tray drive mechanism 55 is attached.

This disc tray drive mechanism 55 is shown in FIG.
As shown in FIGS. 4 to 17, the motor 56, a pinion 36 that is an output gear that drives the rack lever 34, and a gear train 37 that connects the motor 56 and the pinion 36 are configured. In the gear train 57, a worm 58 fixed to the motor shaft 56a of the motor 56, and a worm wheel 59 constantly meshed with the worm 58, and a clutch movable gear 60 integrated with the worm wheel 59.
And a clutch fixed gear 61 which is rotated at a fixed position so that the clutch movable gear 60 is engaged and disengaged. All the 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 circumference of a plurality of gear support shafts 62 on c.

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

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

The clutch lever 67 is rotationally biased in the direction of arrow m by a torsion coil spring 71, which is a clutch lever biasing means mounted around the fulcrum shaft 66, and abuts against the stopper 72 on the chassis 1c. .
Then, the clutch lever 67 by the torsion coil spring 71
The clutch driven lever 65 is rotationally biased in the arrow k direction by the cam action of the cam mechanism 70 by the rotational force in the arrow m direction, and the clutch movable gear 60 is meshed with 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 gear train 57 and the upper portion of the clutch 63 are covered with a gear train cover 74 such as a stainless thin plate.

[Explanation of Eject Spring] Next, as shown in FIGS. 1, 2, 13 and 21, the disc tray 2
A downward projection 75 is integrally formed at a position deviated to the arrow a direction side at a position on one side of the lower surface of the eject slider 7 which is pushed in the arrow a direction side by the projection 75.
6 is slidably attached in the directions of the arrows a and a ′ along a guide groove 77 formed in the chassis 1c and parallel to the directions of the arrows a and a ′.

A tension coil spring 80, which is an eject spring, is installed 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 eject slider 76 is urged to slide in the direction of arrow a'by 0.

[Explanation of Disc Tray Lock Mechanism] Next, as shown in FIGS. 1, 2, 13 and 19, one side portion of the lower surface of the disc tray 2 is displaced to the arrow a direction side. A downward projection 82 is integrally formed with the disk tray lock mechanism 83 that locks and unlocks the projection 82, and is attached to the chassis 1c at a position deviated to the arrow a direction side.

The disc tray lock mechanism 8
3 is an arrow n on the chassis 1c via a fulcrum shaft 84,
Lock lever 85 rotatably mounted in the n'direction
Has a protrusion 82 on the upper end of the tip of the lock lever 85.
A lock portion 85a that locks is formed integrally. A tension coil spring 88, which is a lock lever urging means, is installed between a pair of spring locking portions 86, 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 arrow n and abuts on the stopper 82 on the chassis 1c.

Then, the cam driven pin 89 integrally formed at the end of the lock lever 85 on the side of the fulcrum shaft 84 and the rack lever 34 attached to the lower surface of the disc tray 2.
A cam mechanism 91 that rotationally drives the lock lever 85 in the directions of the arrows n and n'is formed by the cam 90 integrally formed on the opposite side surface of the rack 35 at the end portion on the arrow a direction side.

[Explanation of Rack Lever Lock Mechanism] Next,
As shown in FIGS. 1, 2, 13, and 18 to 20, the rack lever 3 attached to the lower surface of the disc tray 2
A rack lever lock mechanism 93, which is locked and unlocked by a push-push method, is attached between the end of arrow 4 on the arrow a direction side and the top of the chassis 1c.

This push-push type rack lever lock mechanism 93 is composed of 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, which is loosely fitted to the outer periphery of the stopping boss 96 and arranged on the leaf spring 95, a lock pin 98 vertically fixed to the tip of the lock lever 97, and a side of the rack lever 34 in the direction of arrow a. A horizontal plate portion 99 integrally formed on the side portion on the rack 35 side at the end portion of the
It is constituted by a lock groove 100 formed on the lower surface of the horizontal plate portion 99.

The lock lever 97 is attached to the boss 9 by the flanged screw 101 screwed to the boss 96 from above.
The lock lever 97 is locked to the boss 96.
Is used as a fulcrum and is rotatable in the horizontal directions q and q'and in the vertical directions r and r '. The leaf spring 95 urges the lock lever 97 to rotate in the direction of arrow r. The free end portion 97a of the lock lever 97 has a narrow recess 10 formed on the chassis 1c.
The lock lever 97 is loosely fitted in the lock lever 2, and the swing width of the lock lever 97 in the directions of the arrows q and q'is restricted by the recess 102.

The lock groove 100 formed on the lower surface of the horizontal plate 99 has a wide entrance 100a opened at the end of the horizontal plate 99 on the arrow a direction side, and the entrance 10
A straight path 100b linearly extending in parallel with the rack lever 34 from one side of 0a, and a zigzag path 100c extending laterally in a zigzag shape from the end of the straight path 100b in the arrow a'direction. , This zigzag route 1
Detour route 10 detoured from 00c to straight route 100b
And 0d. A lock portion 100e that locks the lock pin 98 is formed in the middle of the zigzag path 100c. A slope 100f that gradually descends in the direction of the arrow a'and a reverse run preventing step 100g are provided between the straight path 100b and the lock portion 100e of the zigzag path 100c, and the lock portion 100e of the zigzag path 100c is provided. The reverse running prevention step portion 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 in the same height and in the same plane.

[Description of Disk Table Lifting Mechanism] Next, as shown in FIGS. 1, 2, 5, and 8 to 10, two large and small openings 1 formed in the substantially central portion of the chassis 1c.
A disc table elevating mechanism 106 for vertically moving the disc table 6 in the directions of the arrows b and b ′, which are the up-and-down directions, is installed in the units 04 and 105.

This disk table lifting mechanism 106
Large opening 10 formed on the side of the chassis 1c in the direction of arrow a
4, the main movable frame 107 and the chassis 1
It has a sub movable frame 108 arranged in a small opening 105 formed on the arrow a'direction side of c. In addition,
The main movable frame 107 and the sub movable frame 108
Is molded of synthetic resin or the like.

The pair of left and right ends 107a of the main movable frame 107 on the side of the arrow a, which is opposite to the side of the auxiliary movable frame 108, is vertically directed to the chassis 1c by the pair of left and right fulcrums 109. It is mounted so that it can rotate in the'direction. In addition, an end 108a of the sub movable frame 108 on the arrow a'direction side opposite to the main movable frame 107 is a vertical arrow on the chassis 1c by a pair of left and right fulcrum shafts 110 integrally formed on both left and right sides thereof. It is attached rotatably in the s and s'directions.
The tip 107b of the central portion of the main movable frame 107 on the arrow a'direction side and the bifurcated tip 108b of the auxiliary movable frame 108 on the arrow a direction side are opposed to each other in the arrow a, a'direction. , These tips 107b, 10
8b are rotatably connected to each other by a connecting portion 111 in the up and down directions of arrows b and b'and arrows s and s'.

As shown in FIG. 8A, the connecting portion 111 has a bifurcated tip 108 of the auxiliary movable frame 108.
a substantially upwardly U-shaped connecting arm 112 disposed between b
A pair of left and right fulcrum shafts 113 that are 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 pair of left and right fulcrum shafts 113 rotatably attach the connecting arm 112 between the forked ends 108 b of the auxiliary movable frame 108.

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

Further, as shown in FIG. 8B, the pair of left and right fulcrums 109 are hollow drums made of rubber or the like on the outer circumference of the screwing boss 118 which is vertically integrally formed on the chassis 1c. The vibration absorbing insulator 119 shaped like a ring is fitted into the main movable frame 107, and the arrow a of the main movable frame 107 is inserted.
The pair of left and right ends 107a on the direction side are fitted into an annular groove 120 formed in the outer periphery of the middle of these insulators 119 in the vertical direction, and the insulator 119 is formed by a flanged screw 121 screwed to the boss 118 from above.
Are held from above and are held on the outer periphery of the boss 118.

Then, as shown in FIGS. 1, 2, 11, and 12, the spindle motor 44 is provided with a plurality of screws 1 at a position deviated to the arrow a'direction side of the main movable frame 107.
Disc table 6 fixed by a pin 124 to the upper end of the spindle 45 thereof.
Are arranged above the main movable frame 107.

[Description of Cam Mechanism of Disc Table Lifting Mechanism] Next, as shown in FIGS. 1, 2, 7, 9, and 10, the disc table lifting mechanism 106 has an auxiliary movable frame 108 as an arrow. A cam mechanism 126 is provided for rotating and driving the main movable frame 107 in the directions of arrows b and b'by rotating and driving the disk table 6 in the directions of arrows b and b'by rotating and driving in the directions s and s'. There is.

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.
The sum slider 128 configured to be slidable on the chassis 1c along arrow 27 in the directions of arrows a and a ', the cam groove 129 formed on the auxiliary movable frame 108 side of the cam slider 128, and the auxiliary movable frame 108. 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 follower pin 130 loosely fitted in 29. The cam slider 128 is formed of 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 urging means installed between the cam slider 128 and the chassis 1c. It is biased and abuts against the stopper 132 on the chassis 1c. Further, the cam groove 129 is formed with a low portion 129a, an inclined portion 129b and a high portion 129c.

The driving means for the cam slider 128 is constituted by the front end arm 34a of the rack lever 34, and the front end arm 34a is constructed so that the cam slider 128 is pushed and slid in the direction of arrow a. .

[Description of Disk Table] Next, FIG.
As shown in FIG. 12, the disc table 6 is formed with an annular disc mounting surface 6b on which the disc 4 is mounted on the upper surface of the outer periphery, and the central hole 4 of the disc 4 is formed on the upper surface of the central portion.
A truncated cone-shaped center ring hub 6c into which a is fitted is formed, and an annular chucking magnet 6a is embedded in the center of the upper surface of the center ring hub 6c.

[Explanation of Disc Clamper] As shown in FIGS. 3 to 5, 11 and 12, straddle the upper position of the disc tray 2 which is horizontally taken in and out on the chassis 1c in the directions of arrows a and a '. Then, the clamper holder 134 is horizontally attached to the upper portion 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 the left and right sides of the chassis 1c at intermediate positions in the directions of arrows a and a'by a pair of left and right screws 136. It is screwed from above.

A circular hollow portion 137 is horizontally formed right 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. There is. Then, a disk clamper 8 formed in a disk shape by a synthetic resin or the like is loosely fitted in 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. The flange 8b is brought into 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 frustoconical recess 8d is formed on the lower surface of the central portion, and a magnetic plate such as an aluminum plate is formed on the upper portion of the recess 8d. The chucking plate 8a is embedded horizontally.

[Explanation of the 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 and the vicinity of the front panel 1b. An emergency eject mechanism 140 for operating the clutch 63 and the rack lever 34 is attached to the position.

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

Then, the guide pin 144 causes the arrow a
A protrusion 146 pushed in the direction is integrally formed on one side surface of the rack lever 34. In addition, a protrusion 67a integrally formed on one side surface of the clutch lever 67 of the clutch 63 has a notch 14 formed on one side surface of the recess 73 of the chassis 1c.
7 and the cam driven pin 148 formed on the protruding piece 67a and the emergency lever 141.
The cam mechanism 150 is formed by the cam surface 149 formed on the side surface of 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 guided by 145, and the guide pin 144 and the cam surface 149 are disengaged from the protrusion 146 and the cam follower pin 148 (non-engaging position (returning position)), and the guide pin 144. And the cam surface 149 has the protrusion 1
46 and the cam driven pin 148, and the emergency lever 1 between the engagement position (the forward movement position) in which the cam is driven.
41 is movable in the directions of arrows t and t '.
The emergency lever 141 is the chassis 1
A tension coil spring 151, which is an urging means for urging an emergency lever, is urged back to the non-engaging position (returning position) in the direction of the arrow t ', and the cam follower pin 68 of the clutch lever 67 is urged. And the protrusion 1 of the rack lever 34
The unexpected interference of the emergency lever 141 with respect to 46 is prevented.

Then, this emergency lever 14
When 1 is returned to the non-engaging position (returning position), the operated portion 141a integrally formed at the end portion of the emergency lever 141 on the arrow a'direction side is the front panel 1.
It is configured so as to be located immediately behind the emergency operation hole 152 formed in b.

[Description of Switches] Next, as shown in FIGS. 1 to 3, the front panel 1b of the disk device main body 1 is described.
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 in 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 portion on the side of the a ′ direction, and the switches SW ₂ and SW ₃ are projected through the through hole 155 formed in the chassis 1c and projected onto the chassis 1c.

[Explanation of Optical Pickup] Next, FIGS.
As shown in FIG. 5, an opening 157 is formed in the main movable frame 107 on the arrow a direction side of the disk table 6, and the carriage 7b having the objective lens 7a of the optical pickup 7 in the opening 157 has an arrow a, It is attached so as to be movable in the a'direction.

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

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

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

[Completed ejection status of disc tray]
First, as shown in FIGS. 24 and 27, in the state where the disc tray 2 is completely ejected from the inside of the disc device main body 1 in the direction of the arrow a ', the contacted portion 2c of the disc tray 2 shown in FIG. The tray eject stopper 53 of the chassis 1c is brought into contact with and stopped from the direction of the arrow a ', and the eject completion detection switch 155 shown in FIG. 1 is turned off.

In this eject completed state, as shown in FIG. 9, the cam slider 128 is moved back by the tension coil spring 131 in the arrow a'direction, and the cam follower pin 130 of the auxiliary movable frame 108 is moved into the cam groove 129.
Has been lowered to the lower part 129a.

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

Further, in this eject completion state, as shown in FIG.
As shown in FIG. 5, the clutch movable gear 60 that constitutes the clutch 63 in the gear train 57 of the disc tray drive mechanism 55 is meshed with the clutch fixed gear 61 by the biasing force of the torsion coil spring 71.
Is being held in transmission.

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

Then, the eject switch S shown in FIG.
When W ₁ is turned off, the disc tray drive mechanism 55
The motor 56 is driven to rotate forward.

Then, as shown in FIG.
Causes the pinion 36 to rotate forward in the direction of 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 arrow a. .

Then, as the rack lever 34 integrated with the rack 35 is driven in the direction of the arrow a, as described above, the tension coil spring 38 is moved by the rack lever 34.
The disk tray 2 is pulled in the direction of the arrow a through the disk tray 2, and the disk tray 2 is automatically loaded in the disk device main body 1 from the direction of the arrow a as shown in FIGS. 1 and 3 to 5B. To be done.

Then, as shown in FIGS. 1 and 2, the abutted portion 2d of the disk tray 2 that has been loaded abuts against the tray loading stopper 52 of the chassis 1c and is stopped. The loading completion detection switch SW ₂ is turned on and 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 protrusion 75 of the disc tray 2 comes into contact with the eject slider 76, as shown in FIG.
Slide in the direction of arrow a along the guide groove 77.

Then, the eject slider 76 pulls the tension coil spring 80 in the direction of arrow a, and the tension coil spring 80 is automatically charged with the ejection force of the disc tray 2.

On the other hand, 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 The software (F / W) has a built-in sequence that automatically stops after that.

Then, the drive operation of the overstroke S of the rack lever 34 as described with reference to FIG. 36 is performed by the normal rotation drive of the motor 56 after the completion of loading the disc tray 2 is detected. The disc 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 disk table 2 is locked by the disk tray 2, the rack lever lock mechanism 93 locks the rack lever 34, the holding state of the disk 4 on the disk tray 2 is released, and the disk table lifting mechanism 106 moves the disk table 6 upward. The operation of mounting (chucking) the disk 4 on the disk 6 is performed.

That is, first, the disc tray 2 is brought 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 in the forward direction, so that as shown in FIG.
The rack lever 34 is moved in the direction of arrow a against the disc tray 2 against the extension coil spring 38 by the amount of overstroke S.

At this time, in the disc tray lock mechanism 83 shown in FIG. 19, almost at the same time when the disc tray 2 is brought into contact with the tray loading stopper 52, the lock lever 85 of the lock lever 85 is moved as shown by the chain line in FIG. The cam driven pin 89 rides on the cam 90 of the rack lever 34,
The lock lever 85 rotates in the direction of arrow n ′ against the tension 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.
Enter 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. 19, the rack lever 34 moves to the cam follower pin 89 of the lock lever 85. Since the cam 90 is disengaged in the arrow a direction, the lock lever 85 is rotated in the arrow n direction by the tension coil spring 88, and the lock portion 85a enters the protrusion 82 of the disc tray 2 on the arrow a'direction side.

As a result, the lock portion 8 of the lock lever 85 is
5a prevents the protrusion 82 of the disc tray 2 from moving in the direction of the arrow a ', and the disc tray 2 is locked at the position where it abuts on 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 the slight return movement in the direction of the last arrow a '. As shown in FIGS. 19 and 20, the lock lever 97 rotates in the directions of arrows q and q'and in the directions of arrows r and r ', and as shown in FIGS. It is inserted relatively in the direction of arrow a '. At this time, the lock pin 98 moves from the doorway 100a of the cam groove 100 to the straight path 1
Through the inclined surface 100f and the stepped portion 100g of 00b and zig-zag path 100c reaches the locking portion 100e proceeds to arrow u _1, u ₂ directions. And the lock part 100e
Then, the lock pin 98 is automatically locked.

The lock operation of the lock pin 98 of the rack lever lock mechanism 93 at this time is a so-called push-push type lock operation, and the rack lever 34 moves with respect to the disc tray 2 by an overstroke S by an arrow a.
It will be locked at the position moved in the direction.

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

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

Then, as shown in FIG. 10, the cam follower pin 130 of the auxiliary movable frame 108 is connected to the cam slider 12.
8 of the cam groove 129 from the lower portion 129a to the inclined portion 129b
The auxiliary movable frame 108 is pushed up to the high part 129c through the ridge, and the auxiliary movable frame 108 moves from the lowered position shown in FIG. 5A to the raised position shown in FIG. Is driven to rotate.

Then, the tip 108b of the auxiliary movable frame 108 drives the tip 107b of the main movable frame 107 to rise through 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 becomes horizontal by being rotationally driven in the direction of arrow b ′ to the raised position shown in FIG. 5B.

As a result, the disc table 6 and the optical pickup 7 are driven up in the direction of arrow b'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 disc table 6 is fitted into the center hole 4a of the disc 4 on the disc table 6 from the direction of the arrow b ', and the disc mounting of the disc table 6 is performed. Surface 6
The disk 4 is pushed up in the direction of arrow b'by b.

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

Further, at this time, the disk clamper 8 is moved by the chucking magnet 6a of the disk table 6.
The chucking plate 8a is sucked in the direction of the arrow c ', and the disc clamper 8 magnetizes the disc 4 onto the disc table 6.

By this series of disc mounting operations, the disc 4 is automatically mounted on the disc table 6 as shown in FIG. 23, and the mounted disc 4 is mounted on the disc tray 2. Table 3a
It will be automatically floated in the direction of arrow c which is upward from.

By the way, by the movement of the rack lever 34, which is one drive source, in the direction of the arrow a by the overstroke S, the disk 4 by the four lock arms 15 is moved.
The holding state of the outer periphery of the disk is mechanically released, and the disk table 6 is mechanically driven to be lifted to mount the disk 4 on the disk table 6. Can be taken accurately.

As a result, as shown in FIG. 11, the arrow b '
When the centering hub 6c of the disc table 6 which is lifted in the direction is loosely fitted in the center hole 4a of the disc 4 in the direction of the arrow b ', the holding state of the outer periphery of the disc 4 by the four lock arms 15 is released. can do. Note that this operation timing is determined by the cam slider 12
The shape of the cam groove 129, which is a cam of No. 8, can be set easily and accurately.

As a result, when the disc 4 is mounted on the disc table 6, the holding state of the outer periphery of the disc 4 by the four lock arms 15 and the magnet chucking operation of the disc 4 by the disc clamper 8 interfere with each other. There is no Therefore, while holding the outer periphery of the disc 4 by the four lock arms 15,
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 of damaging the disk 4 occurs.
It is possible to smoothly magnetically chuck the disk 4 on the disk table 6 while fitting the disk 4 onto the taper surface of the disk without difficulty.

After the disc 4 is automatically mounted on the disc table 6, the objective lens 7a of the optical pickup 7 is moved to the disc 4 as shown in FIG. 5B.
Being close to the underside of.

Therefore, after this, the spindle motor 44
Depending on the disc table 6 and the disc clamper 8
While rotating the disk 4 integrally with it, the stepping motor 160 of the linear motor 159 of the optical pickup 7 shown in FIG. 1 drives the rack 163 of the carriage 7b via the gear train 162 to drive the carriage 7b.
Is driven along the pair of guide shafts 158 in the directions of arrows a and a ', the objective lens 7a can be moved in the directions of arrows a and a', and desired recording and / or reproduction of the disk 4 can be performed. it can.

[Disc Ejecting Operation by Disc Tray] After recording and / or reproducing of the disc 4, FIG.
And when the eject button 43 shown in FIG. 4 is pushed to turn on the eject switch SW ₁ or when an eject command signal is output from the host computer, FIG.
The motor 56 of the disc 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 once driven slightly forward and then reversely driven.

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

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.
After going through 00h to the detour path 100d in the direction of arrow u ₃ , the rack lever 34 is automatically unlocked.
Then, by the subsequent movement of the rack lever 34 in the direction of the arrow a ′, the lock pin 98 advances from the detour path 100d to the straight path 100b in the direction of the arrow u ₄ , and the entrance 10
Exit from 0a in the direction of arrow a.

At the time when the rack lever 34 is unlocked by the rack lever lock mechanism 93, the disk tray lock mechanism 83 holds the locked state of the disk tray 2. As shown by 36, the pinion 36 is reversely rotated in the direction of the arrow i ′, and the rack lever 34 is moved from the position shown by the solid line in FIG. 36 to the position shown by the alternate long and short dash line by the cooperation of the biasing force of the tension coil spring 38. The disc tray 2 is moved in the direction of the arrow a ′ by the amount of the overstroke S.

Then, in the reverse operation at the time of loading the disc, as shown in FIG. 5A, the disc table lifting mechanism 106 lowers the disc table 6 and the optical pickup 7 in the direction of the arrow b, as shown in FIG. As described above, the disc table 6 and the disc clamper 8 are separated from the disc 4 in the directions of the arrows b and c, and
As shown in FIG. 22, the outer periphery of the disk 4 is automatically held again by the four lock arms 15.

Then, 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, the cam driven pin 89 of the disc tray lock mechanism 83 is shown by the one-dot chain line in FIG. Is the cam 9 of the rack lever 34
0, the lock lever 85 rotates in the direction of arrow n ′ against the tension coil spring 88, and the disc tray 2 is unlocked.

Then, as shown in FIG. 36, the pinion 3
6 is driven to rotate in the direction of arrow i'in the reverse direction, whereby the tip arm 34a of the rack lever 34 pushes the stopper 39 of the disc tray 2 in the direction of arrow a '.
The disc tray 2 and the rack lever 34 are automatically ejected from the inside of the disc device main body 1 in the arrow a'direction.

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

[Emergency Eject Operation] The disk device body in an emergency such as when the power is cut 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 performing an emergency eject for taking out the disc 4 from the inside of the disc 1, as shown in FIG. 17, a wire-like operation such as a sem clip is performed in the emergency operating hole 152 formed in the front panel 1b of the disc device main body 1. The member 153 is pushed in the direction of arrow a.

Then, the wire-like operating member 153 pushes the operated portion 141a of the emergency lever 141 in the direction of arrow a, and the emergency lever 141 is moved while being guided by the guide pins 142, 144 and the guide grooves 143, 145. From the disengaged position (returning position) shown in FIG. 15 to the engaging position (forward moving position) shown in FIG. 17, it is pushed in the direction of arrow t against the extension coil spring 151.

As shown in FIG. 17, first, the cam surface 149 of the emergency lever 141 pushes the cam follower pin 148 of the clutch lever 67 in the direction of the arrow m ', causing the clutch lever 67 to twist. It is driven to rotate in the direction of the arrow m'against.

Then, as shown in FIG. 17, the cam mechanism 7
By 0, the clutch driven lever 65 is rotated in the arrow k'direction, the clutch movable gear 60 of the clutch 63 is disengaged from the clutch fixed gear 61 in the arrow k'direction, the clutch 63 is switched to the non-transmission state, and the pinion 36 is released. Will be able to rotate freely.

Then, 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 as shown in FIG. 17 while the clutch 63 is held in the non-transmission state. The protrusion 146 is pushed in the direction of arrow a, and the rack lever 34 is pushed out in the direction of arrow a against the tension 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 a normal eject.

Therefore, when the wire-like operating member 153 is pulled out from the emergency operating hole 152 in the direction of arrow a ',
The emergency lever 141 is pulled back from the engagement position (forward position) shown in FIG. 17 to the non-engagement position (return position) shown in FIG. 15 by the tension coil spring 151 in the direction of arrow t ′, and the rack lever 34 is pulled by the tension coil spring. By 38, the disk tray 2 is pulled back in the direction of the arrow a ′. At this time, since the clutch 63 has already been switched to the non-transmission state, the pinion 36 moves to the rack 35.
Idle lightly by.

When the rack lever 34 is pulled back from the position shown by the solid line in FIG. 36 to the position shown by the alternate long and short dash line in the direction of arrow a ', the disk tray lock mechanism 83 is locked, as in the normal ejecting operation. It will be canceled.

At the moment the disc tray 2 is unlocked, as shown in FIG. 21, the tension coil spring 8
By the ejecting force charged to 0, the eject slider 76 is slid along the guide groove 77 in the direction of the arrow a ′ from the position indicated by the alternate long and short dash line to the position indicated by the solid line in FIG. The projection 75 of is pushed in the direction of arrow a '.

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

According to the emergency eject mechanism 140 shown in FIGS. 15 to 17, the gear train 57
The clutch movable gear 60 of the clutch 63 provided therein is always meshed with the worm 58 by the worm wheel 59 integrated therewith, and the clutch movable gear 60 is meshed 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 tips 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 greater than the turning radius of 68
By the cam mechanism 70 engaged in the arc-shaped cam groove 69, the tips of the clutch driven lever 65 and the clutch lever 67 are directly connected.

The cam mechanism 70 allows the clutch driven lever 65 to be lightly driven to rotate in the directions of the arrows k and k'by rotating the clutch lever 67 in the directions of the arrows m and m ', while the clutch driven lever 65 can be rotated. The clutch lever 67 has a function of restraining the free rotation in the directions of 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, the clutch movable gear 60 is not easily disengaged from the clutch fixed gear 61 during the normal operation, and the transmission state of the gear train 57 can be kept stable, but the emergency At the time of the sea eject, the clutch movable gear 60 can be easily disengaged from the clutch fixed gear 61 with a relatively light force (weak force).

Further, according to the disc table lifting mechanism 106 shown in FIGS. 1, 2, 5 and 7, the main movable frame 107 is supported by the pair of fulcrum portions 109 with respect to the chassis 1c.
And three insulators 11 interposed in the connecting portion 111
Since they are elastically supported by 5, 5 and 119, it is possible to surely absorb the vibration applied from the outside during recording and / or reproducing of the disk 4 by these insulators 115 and 119.

Therefore, it is possible to prevent the data error of the disk 4 due to the vibration, 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 above embodiments, and various modifications can be made based on the technical idea of the present invention.

[0155]

The disk device of the present invention constructed as described above has the following effects.

According to the first aspect of the present invention, the rack lever attached to the disc tray is urged to move in the eject direction by the rack lever urging means to urge the disc holding means attached to the disc tray to the holding state. A disk inserted in the recess of the disk tray is held by the disk holding means, and loading and ejecting of the disk tray is mounted on the disk apparatus body and is a motor for driving a rack lever,
A disc tray drive mechanism consisting of a gear train and a pinion is used, and at the time of loading, the eject spring is charged with the ejecting force of the loaded disc tray, and the rack lever is attached to the push / push mechanism attached to the disc device body. It is locked by the rack lever lock mechanism of the system, and at the time of emergency eject, the clutch lever of the clutch provided in the gear train of the disc tray drive mechanism is operated by the emergency operating means operated from the outside of the front panel of the disc device body. This clutch is switched to the non-transmission state by operating, the rack lever lock mechanism is unlocked by the rack lever, and the disc tray is automatically ejected by the eject spring. Since one rack lever is used, the driving means for loading and ejecting one disc lever, the driving means for holding and releasing the disc by the disc holding means, and the driving means for unlocking the rack lever at the time of emergency eject Can be used as both. Therefore, the emergency eject operation can be performed with a simple mechanism.

According to a second aspect of the present invention, the emergency eject operating means is configured to be movable between an engaging position and a non-engaging position with respect to the rack lever and the clutch lever, and the emergency eject operating means is not engaged. Since the urging means for urging the disk tray to return to the combined position is provided, during the normal loading and ejecting operations of the disc tray, the emergency eject operating means does not get in the way and the loading and ejecting operations of the disc tray can be performed lightly.

According to a third aspect of the present invention, a clutch movable gear of the clutch is attached, and a clutch driven lever for engaging and disengaging the clutch movable gear with respect to the clutch fixed gear is provided, and the tip of the clutch driven lever and the clutch lever. A cam mechanism that prioritizes operation from the clutch lever side is provided between the tip of the clutch lever and the clutch movable gear during the normal disc tray loading and eject operations, making it difficult for the clutch to move. Even though the state is maintained in a stable state, the clutch movable gear can be easily disengaged from the clutch fixed gear during the emergency eject, so that the emergency eject operation can be easily performed with a comparatively light force.

According to a fourth aspect of the present invention, the cam mechanism comprises a cam follower pin provided at the tip of the clutch follower lever and a cam groove provided at the tip of the clutch lever and into which the cam follower pin is loosely fitted. Since the cam groove is constituted by an arc-shaped elongated hole having a radius of curvature larger than the rotation radius of the cam driven pin, a cam mechanism in which operation from the clutch lever side is prioritized can be realized with a simple structure. Cost reduction can be achieved.

[Brief description of drawings]

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

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

FIG. 3 is a plan view illustrating a loading completion state of a disc into a disc device main body by a disc tray.

FIG. 4 is a perspective view of FIG.

5A is a sectional side view taken along the line EE of FIG. 3 for explaining the middle of loading and ejecting, and FIG. 5B is a view for explaining a loading completion state. FIG. 7 is a sectional view taken along line EE of FIG.

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

FIG. 7 is a perspective view showing a main part of a disc table lifting mechanism.

8 is a view for explaining the insulator, and FIG.
8A is an enlarged sectional view taken along the line FF of FIG. 1, and FIG. 8B is an enlarged sectional view taken along the line GG of FIG.

9 is an enlarged cross-sectional view taken along line HH of FIG. 1 for explaining the descending operation of the disc table by the disc table elevating mechanism.

10 is an enlarged sectional view taken along line HH of FIG. 1 for explaining the operation of the disc table lifting mechanism.

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

FIG. 12 is an enlarged sectional view taken along the line I-I of FIG. 1 for explaining the completion of mounting the disc on the disc table.

FIG. 13 is a plan view illustrating a positional relationship of a disc tray drive mechanism, a disc 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 disc tray drive mechanism.

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

16 is an enlarged sectional view taken along the line JJ of FIG.

FIG. 17 is an enlarged plan view of the disc tray drive mechanism and the emergency eject mechanism, which illustrates the emergency eject operation.

18 (A) is an enlarged side view taken along the line KK of FIG. 1 for explaining the rack lever lock mechanism.
FIG. 8B is a plan view taken along the line LL of FIG.

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

FIG. 20 is a developed sectional view for explaining a lock operation and a lock release operation of the rack lever lock mechanism.

21 is an enlarged cross-sectional view taken along the line MM of FIG.

FIG. 22 is a sectional view taken along the line AA of FIG. 28 for explaining the holding state of the disc on the disc tray.

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

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

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

FIG. 26 is a perspective view showing a state where the loading of the disc into the disc device main body of FIG. 24 is completed.

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

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

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

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

31 is a cross-sectional view taken along the line CC of FIG. 30 (A).

32 is a cross-sectional view taken along the line DD of FIG. 30 (A).

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

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

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

FIG. 36 is a plan view showing how the pair of release levers are driven by the cam levers when the rack lever of FIG. 35 is overstroked.

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

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

FIG. 39 is a perspective view showing the rack lever and the pinion of the above.

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

41 is a cross-sectional view showing a horizontal use and a vertical use taken along the line EE of FIG.

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

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

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

[Explanation of symbols]

1 disk device main body 1b front panel of disk device main body 1c chassis of disk device main body 2 disk tray 3 recess of disk tray 3a disk mounting surface of recess of disk tray 4 disk 4a center hole of disk 4b outer circumference of disk 6 disk Table 8 Disc clamper 15 Lock arm (disc holding means) 24 Release lever (release means) 34 Rack lever 34a Rack arm tip arm 35 Rack lever rack 36 Pinion 38 Extension coil spring (rack lever biasing means) 52 Tray loading stopper 55 Disc tray drive mechanism 56 Motor 57 Gear train 60 Clutch movable gear 61 Clutch fixed gear 63 Clutch 65 Clutch driven lever 67 Clutch lever 68 Cam driven pin 6 Cam groove 70 Cam mechanism 71 Torsion coil spring (clutch lever urging means) 75 Disc tray protrusion 76 Eject slider 80 Elongation coil spring (ejection spring) 82 Disc tray protrusion 93 Rack lever lock mechanism 97 Lock lever 98 Lock pin 100 Lock groove 140 Emergency eject mechanism 141 Emergency lever (Emergency eject operation means) 142, 144 Guide pin 143, 145 Guide groove 151 Tension coil spring (Emergency lever biasing means) 152 Emergency operation hole 153 Wire-like operation member

Claims (4)

[Claims] 1. A disc tray for loading and ejecting a recording and / or reproducing disc into the recess to load and eject the disc device body; and the disc tray attached to the disc tray and inserted into the recess. A disc holding means for holding the outer circumference of the disc; a releasing means attached to the disc tray for releasing the holding state of the disc by the disc holding means; In a disc device having a disc table on which the loaded disc is mounted, the disc device is attached to the disc tray and is configured to be movable in a loading direction and an eject direction with respect to the disc tray, and to load the disc tray. Move in direction A rack lever for driving the releasing means, a rack lever urging means for urging the rack lever in the eject direction with respect to the disk tray, and a rack lever attached to the disk device main body for loading the rack lever in the loading direction. And a disk tray drive mechanism including a motor for driving in the eject direction, a gear train, and a pinion, and a push mechanism that is attached to the disk device body and locks the loaded rack lever, and the lock is released by the rack lever. -A push type rack lever lock mechanism, an eject spring that is attached to the main body of the disc device and is charged with an eject force by the disc tray that is loaded, and a gear train of the disc tray drive mechanism. Was, the clutch is switched to the non-transmission state and the power transmission state by the clutch lever, mounted on the front panel of the disk device body is operably configured from its outer front panel,
A disk device comprising: an emergency eject operation means for switching the clutch lever to a non-transmission state by the clutch lever and unlocking the rack lever lock mechanism by the rack lever. 2. The emergency eject operating means is configured to be movable between an engaging position and a non-engaging position with respect to the rack lever and the clutch lever, and the emergency eject operating means is moved to the non-engaging position. 2. The disk device according to claim 1, further comprising an urging means for urging back. 3. A clutch movable gear of the clutch is attached, and a clutch driven lever for engaging and disengaging the clutch movable gear with a clutch fixed gear is provided, and a tip of the clutch driven lever and a tip of the clutch lever are provided. 3. The disk device according to claim 1, further comprising a cam mechanism provided between the two, which gives priority to the operation from the clutch lever side. 4. The cam mechanism comprises a cam follower pin provided at a tip end of the clutch follower lever and a cam groove provided at a tip end of the clutch lever into which the cam follower pin is loosely fitted. 4. The disk device according to claim 3, wherein said disk drive device comprises an arc-shaped elongated hole having a radius of curvature larger than the radius of rotation of said cam driven pin.