JP3404915B2 - Disk unit - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk device, and more particularly to an automatic loading type disk device for loading and unloading a disk by a loading motor.

[0002]

2. Description of the Related Art A conventional automatic loading type disk device is a disk emergency eject for manually ejecting a disk when a failure occurs in which a loading motor stops working while the disk is mounted. No mechanism was provided.

[0003]

Conventionally, when the loading motor does not move while the disc is mounted, the cover of the disc device is removed and the disc is taken out.

This work is very time-consuming.

Therefore, an object of the present invention is to provide a disk device that solves the above problems.

[0006]

According to a first aspect of the invention, an automatic loading means for loading and unloading a disc, which is operated by a loading motor via a rotation deceleration transmission mechanism, is provided for loading and unloading the disc. On the other hand, in a disk device having at least a reproducing means for reproducing information, it is operated by being operated from the outside in an emergency and cuts the rotation transmission path of the rotation deceleration transmission mechanism at an intermediate position, and at the same time, the rotation deceleration rotation transmission mechanism. The configuration has an emergency unloading means for rotating the rotating body on the output side.

According to a second aspect of the present invention, the rotating body on the output side of the rotation decelerating rotation transmitting mechanism is provided so as to be displaceable along the fixed shaft, and is meshed with the rack of the automatic loading means. Is composed of a spur gear that meshes with the second gear from the output side, and the emergency unloading means is a shaft that is moved in the longitudinal direction by a pushing operation and that is rotated by a turning operation, and is fixed to the shaft. When the shaft moves in the longitudinal direction, the tip of the shaft displaces the spur gear along the fixed shaft to disengage it from the second gear, and the crown gear. Is configured to mesh with the spur gear.

[0008]

In the invention of the disk device according to the first aspect, the structure provided with the emergency unloading means acts so as to allow the automatic loading means to be operated manually.

The structure in which the rotation transmission path is cut off acts so that the manual operation force is not transmitted to the loading motor.

In the invention of the disk device of claim 2,
The structure in which the shaft displaces the spur gear and the crown gear meshes with the spur gear serves to make the structure of the emergency unloading means small and simple.

[0011]

2 to 6 show a mini disk device 10 according to an embodiment of the present invention.

The mini disk device 10 has a structure in which a mini disk device main body 11 is incorporated in a box 12.

The box body 12 has a front bezel 13.

The front bezel 13 has a mini disk cartridge insertion slot 14, a screwdriver insertion slot 15, and an eject button 16.

The mini disk unit body 11 is a chassis 2
0, a mini disk cartridge holder 21, a lifting cam plate 22, and a pull-in / push-out rack plate 2
3, a hook lever support plate 24, a hook lever 25, a loading motor 26, a disk motor 27, an optical head 28, and an auxiliary magnetic field coil 29.
And a gear mechanism 30 as a rotation deceleration transmission mechanism.

Mainly, as shown in FIG. 6, the holder 21, the plates 22, 23, 24 and the lever 25 constitute a mini disk cartridge loading mechanism 40.

The mini disk cartridge loading mechanism 40, the loading motor 26, and the gear mechanism 3
0 constitutes a mini disk cartridge automatic loading means.

Optical head 28 and auxiliary magnetic field coil 29
Then, the disk motor 27 constitutes recording / reproducing means.

The lifting cam plate 22 is provided on the chassis 20 so as to be slidable in the Y ₁ and Y ₂ directions.

The pull-in push-out rack plate 23 is provided on the elevating cam plate 22 so as to be slidable in the Y ₁ and Y ₂ directions.

The hook lever support plate 24 is provided on the mini disk cartridge holder 21 so as to be slidable in the Y ₁ and Y ₂ directions.

A hook lever 25 is supported on the lower surface side of the support plate 24 by a shaft 31 so as to be rotatable in the A ₁ and A ₂ directions.

The A ₁ direction is the direction in which the hook 25a is displaced in the X ₁ direction, and the A ₂ direction is the direction in which the hook 25a is displaced in the X ₂ direction.

A pin 32 penetrates and is fixed to the tip of the hook lever 25.

The portion of the pin 32 protruding above the hook lever 25 is X ₁ ,
It is fitted into a long hole 24a elongated in the X ₂ direction and an L-shaped hole 21b of the projecting portion 21a of the holder 21.

The portion of the pin 32 that protrudes downward from the hook lever 25 has a hole 23a in which the crank shape of the rack plate 23 is extended, an L-shaped hole 22a in the cam plate 22, and the chassis 20. Hole 20
It is fitted with a.

The tilted portion 23a- _{1 of the} hole 23a functions to rotate the hook lever 25.

Of the hole 23a, the bent portion indicated by the reference numeral 23a- ₂ plays an important role in the pushing operation described later.

The support plate 24 has a tension coil spring 3
It is urged in the Y ₁ direction by 3. The spring force of the coil spring 33 is larger than the force required to pull in the cartridge 60 described later.

The rack plate 23 has a rack 23b, and the cam plate 22 has a rack 22b.

The cam plate 22 includes a pair of inclined cam grooves 2
It has 2c, 22d and a fork portion 22e.

One convex portion 21c on the side surface of the holder 21 is fitted in the above-mentioned inclined cam groove 22c and the fork portion 20b on the chassis 20.

Another convex portion 21d on the side surface of the holder 21 is fitted into the inclined cam groove 22d.

As shown in FIGS. 2 and 3, the chassis 20
A lifting cam plate 34 is also provided on the left end side of the.

A link 35 is provided on the top plate of the holder 21 so as to be rotatable in the B ₁ and B ₂ directions.

The pin 36 at one end of the link 35 is fitted to the fork portion 22e of the cam plate 22, and the pin 37 at the other end is fitted to the fork portion 34a of the cam plate 34.

The cam plate 22 has a tension coil spring 3
It is biased in the Y ₂ direction by 8.

In general, the pin 32 and the tilted portion 23a _-1 are responsible for the locking operation and the unlocking operation described later.

In general, the rack plate 23 and the support plate 24 are responsible for the pulling-in operation and the pushing-out operation described later.

In general, the cam plate 22 takes charge of the descending operation and the ascending operation which will be described later.

As shown in FIG. 2, the mini disc cartridge 60 has a magneto-optical disc 62 housed in a cartridge body 61, and a shutter 63 in the cartridge body 61.
Is attached.

Next, the automatic loading and unloading operations of the mini disk cartridge will be described.

The automatic loading operation is started when the operator inserts the mini disk cartridge 60, and as shown in FIG.
Then, the pull-in operation 71 and the descending operation 72 are performed.

The operator uses the mini disk cartridge 60.
Is inserted into the insertion opening 14 in the direction shown in FIG. 2 in the Y ₁ direction to a predetermined position.

In the process of this insertion, the shutter 63 is unlocked and the hole 63a is click-locked by the hook member 80 so that the shutter 63 slides relative to the cartridge body 61 in the Y ₂ direction. Open, opening 6
From 5, the magneto-optical disk 62 is exposed.

Further, when the insertion of the mini disk cartridge 60 is detected, the loading motor 26
Starts and rotates forward.

As a result, the rack plate 23 moves in the Y ₁ direction via the gear mechanism 30, as indicated by the line 90 _-1 in FIG. 8 (A).

During the movement of the rack plate 23 in the Y ₁ direction, as shown in FIG.
0, a pull-in operation 71, and a descending operation 72 are sequentially performed.

Locking Operation 70 During the initial movement of the rack plate 23, the pin 32 is moved in the X ₂ direction by the oblique portion 23a _-1 of the hole 23a, and the hook lever 25 is rotated in the A ₂ direction. Figure 8
The line 91 _{-1 in} (B) represents this.

As a result, the hook 25a enters the recess 66 of the cartridge body 61 and locks the recess 66.

Retracting operation 71 When the rack plate 23 further moves in the Y ₁ direction, the hook lever 25 and the support plate 24 are moved by the spring 33.
Following the movement of the rack plate 23, it moves in the Y ₁ direction. The pin 32 moves in the Y ₁ direction while being held by the bent corner portion 23a _-2 of the hole 23a, and the hook lever 25 moves to A ₂
Move in the Y ₁ direction while still rotating in the direction.

As a result, the mini disk cartridge 60 whose shirt is opened is pulled into the holder 21 to a predetermined position.

Lowering Operation 72 When the rack plate 23 moves in the Y ₁ direction in the final stage, the cam plate 22 is pushed by the rack plate 23, and as shown by a line 92 _-1 in FIG. 8C, in the Y ₁ direction. Move to.

At this time, the cam grooves 22c and 22d form the convex portions 2
1c and 21d, and the cartridge holder 21 is moved to Z ₂
Descend in the direction.

As a result, the mini disk cartridge 6
0 descends in the Z ₂ direction and is mounted at a predetermined position, and the magneto-optical disk 63 is mounted on the turntable 81.

Subsequently, the magneto-optical disk 63 is rotated by the disk motor 27, and the auxiliary magnetic field coil 29 is generated.
Is close to the upper surface of the magneto-optical disk 63, and the optical head 28
Moves in the X ₁ and X ₂ directions together with the auxiliary magnetic field coil 29, information is recorded on the magneto-optical disk 63, and information is reproduced from the magneto-optical disk 63.

When the eject button 16 is pressed during the recording / reproducing mode, the loading motor 26 is started and reversely rotated.

As a result, the rack plate 23 moves in the Y ₂ direction via the gear mechanism 30, as indicated by the line 90 _-2 in FIG. 8 (A).

As the rack plate 23 moves in the Y ₂ direction, as shown in FIG.
The pushing operation 74 and the unlocking operation 75 are sequentially performed.

Lifting Action 73 The cam plate 22 as well as the rack plate 23 are assisted by the spring force of the spring 38 to line 90 in FIG. 8B.
_-Move as shown by _-2 .

At this time, the cam grooves 22c and 22d are formed in the convex portion 2
1c, 21d, and the cartridge holder 21 is Z ₁
Rise in the direction.

The mini disk cartridge 60 rises together with the cartridge holder 21, and the magneto-optical disk 63 is separated from the turntable 81.

Pushing Operation 74 Subsequently, the cam plate 22 stops moving, and only the rack plate 23 moves in the Y ₂ direction.

The bent portion 23a of the hole 23 pushes the pin 32.

As a result, the hook lever 25 moves in the Y ₂ direction together with the plate 24, and the mini disk cartridge 60 is pushed out of the holder 21 in the Y ₂ direction.

Lock release operation 75 When the rack plate 23 moves at the final stage, the pins 32
Diagonal portion 23a of hole 23a_-1By X₁In the direction
Then, the hook lever 25 moves to the line 91 of FIG. _-2Indicated by
Like A₁Is rotated in the direction.

As a result, the hook 25a comes out of the recess 66, and the locking is released.

After this, the operator pulls out the mini disk cartridge 60 that has been ejected halfway.

Next, the gear mechanism 30 will be described with reference to FIG.
And FIG. 9 will be described.

FIG. 1 is a view seen from the lower surface side of the mini disk device 10.

The gear mechanism 30 is a mechanism for decelerating, and in the direction in which the rotation is transmitted, the loading motor 26 is sequentially arranged.
Worm 100 fixed to the motor shaft 26a, a gear 101 in which a worm wheel 101a and a spur gear 101b are integrated, a stepped spur gear 102, and a stepped spur gear 10
3, having a spur gear 104.

Worm 100-Gear 101-Gear 102
-Gear 103-Gear 104 form the rotation transmission path 109.

Worm 100 and worm wheel 101
a and the worm gear mechanism 110.

The spur gear 103 is the second gear from the output side.

The spur gear 104 on the output side is the spur gear portion 104.
It has a and the taper part 104b.

The spur gear 104 is rotatably and slidably fitted on the shaft 106 on the bracket 105.

The spur gear 104 is urged in the X ₂ direction by the compression coil spring 107 on the shaft 106 and is in contact with the washer 108 on the shaft 106, and in the X ₁ and X ₂ directions, at the position P. Located in ₁ .

Of the spur gear portion 104a, the tapered portion 104
The portion near b is meshed with the spur gear 103.

The substantially central portion of the spur gear portion 104a meshes with the rack 23b of the rack plate 23.

The spur gear 104 is decelerated and rotated by the motor 26, and the rack plate 23 is moved in the Y ₁ and Y ₂ directions.

Next, the emergency unloading mechanism 120, which is an essential part of the present invention, will be described with reference to FIGS.

The emergency unloading mechanism 120 includes the shaft 1
21, a crown gear 122, a bracket 123,
It has a compression coil spring 124 and the above-mentioned slidable spur gear 104.

The shaft 121 is supported by a bracket 123 fixed to the lower surface of the chassis 20 and extends in the Y ₁ and Y ₂ directions.

The shaft 121 is rotatable and slidable in the Y ₁ direction.

At the end of the shaft 121 in the Y ₁ direction, the crown gear 1
22 is fixed.

At the Y ₂ direction end of the shaft 121, the split groove 121
a.

At the end of the shaft 121 in the Y ₁ direction, the hemispherical portion 1
21b.

The shaft 121 is provided at a position where the hemispherical portion 121b faces the tapered portion 104b of the spur gear 104 located at the position P ₁ .

In the normal state, as shown in FIG.
Is moved in the Y ₂ direction by the spring force of the compression coil spring 124 on the shaft 121.

Crown gear 122 and hemispherical portion 121
b is located away from the spur gear 104.

The split groove 121a is located at the position of the insertion port 15.

Next, in the state where the mini disk cartridge is installed, the mini disk device 10
The operation and operation of unloading the mini disc cartridge when the disc has stopped operating will be described.

As shown in FIG. 9, the operator inserts the minus screwdriver 130 into the screwdriver insertion opening 15 of the front bezel 13 and inserts the tip of the screwdriver 130 into the split groove 121.
Fit it to a and rotate it counterclockwise while pressing it in the Y ₁ direction.

By pressing in the Y ₁ direction, the axis 1
21 is displaced in the Y ₁ direction against the spring 124, and _first , the hemispherical portion 121b abuts the tapered portion 104b,
The spur gear 104 resists the compression coil spring 107 and moves X ₁
It is pushed in the direction and displaced to the position P ₂ .

As a result, the spur gear portion 104b becomes the spur gear 1
03, the rotation transmission path 109 is disconnected between the spur gear 103 and the spur gear 104.

Secondly, the crown gear 122 meshes with the spur gear portion 104a.

By rotating in the counterclockwise direction, the crown gear 122 rotates, this rotation is transmitted to the spur gear portion 104b, and the spur gear 104 is rotated in the direction of arrow C.

The hemispherical portion 121b of the shaft 121 is the shaft 10.
Then, the position of the shaft 121 in the Y ₁ and Y ₂ directions is determined. At this time, the crown gear 122
Optimally meshes with the spur gear portion 104a.

Therefore, the operator does not have to worry about how much the screwdriver 130 is pressed, and only needs to rotate the screwdriver 130 while keeping it in contact with the screwdriver 130, and the operation is easy.

The rotation of the spur gear 104 is transmitted to the rack 23b, the rack plate 23 moves in the Y ₂ direction, and the lifting operation 7 is performed in the same manner as the above automatic unloading operation.
3, the pushing operation 74 and the unlocking operation 75 are performed, and the mini disk cartridge 60 is projected from the insertion opening 14 of the front bezel 13.

The operator uses the mini disk cartridge 60.
The mini disk cartridge 60 is taken out by grasping and pulling.

Here, the rotation transmission path 109 is the spur gear 10.
3 and the spur gear 104 are broken, so that the spur gear 1
The rotation of 03 is not transmitted to the spur gear 104, and the motor 26
Does not reach.

Therefore, although the worm gear mechanism 110 is provided at the position of the motor shaft 26a of the motor 26 so that the rotation cannot be transmitted from the worm wheel 101a to the worm 100, the emergency unloading operation can be performed without any trouble. Be seen.

That is, the emergency unloading mechanism 120 of this embodiment is suitable for an apparatus having a structure in which a worm gear mechanism capable of achieving a large reduction ratio is provided in the gear mechanism to downsize the loading motor 26.

The emergency unloading mechanism 120 of this embodiment is also effective when the gear mechanism has a structure in which a normal gear is provided instead of the worm gear mechanism described above. This is because the motor does not become a load during the emergency unloading operation and the screwdriver 130 can be lightly turned.

It is also possible to use a dedicated turning member instead of the screwdriver.

Further, the present invention includes not only a mini disk device but also a device for automatically loading a CD, a CD-ROM and a magnetic disk.

A device for automatically loading a CD and a CD-ROM has a reproducing means, not a recording / reproducing means.

[0109]

As described above, the invention of claim 1 has the following features.

In an emergency, by manual operation,
You can unload the disc.

Since the loading motor does not become a load during the manual operation, the manual operation can be performed with a light force.

Even if the rotation reduction mechanism has a worm gear mechanism, it can be applied without any trouble. Therefore, by using the worm gear mechanism, it may be suitable for a device having a small loading motor.

According to the invention of claim 2, the structure of the emergency unloading means can be miniaturized and simplified, and the disc device can be miniaturized.

[Brief description of drawings]

FIG. 1 is an enlarged view of a rear surface of an emergency unloading mechanism which is a main part of a disk device according to an embodiment of the present invention.

FIG. 2 is a perspective view of a disk device according to an embodiment of the present invention.

FIG. 3 is a plan view of the disk device shown in FIG.

FIG. 4 is a front view of the disk device shown in FIG.

5 is a side view of the disc device shown in FIG. 2. FIG.

FIG. 6 is an exploded perspective view of a disk loading mechanism portion in FIGS. 2 to 5;

FIG. 7 is a diagram for explaining a disc loading operation and a disc unloading operation of the disc device shown in FIGS. 1 to 5;

FIG. 8 is a diagram for explaining the operations of the rack plate, the hook lever, and the cam plate during the disk loading and unloading operations.

9 is a diagram showing a state during operation of the emergency unloading mechanism of FIG. 1. FIG.

[Explanation of symbols]

10 Mini disk device 11 Mini disk device body 12 boxes 13 front bezel 14 Mini disk cartridge insertion slot 15 Screwdriver insertion port 16 eject button 20 chassis 21 Mini disc cartridge holder 22 Lifting cam plate 23 Pull-in / push-out rack plate 22b and 23b racks 24 Hook lever support plate 25 hook lever 26 Loading Motor 27 Disk motor 28 Optical head 29 Auxiliary magnetic field coil 30 gear mechanism 31 axis 32 pins 33 tension coil spring 34 Lifting cam plate 35 links 36, 37 pin 38 Tension coil spring 40 Mini disk cartridge loading mechanism 60 mini disc cartridge 61 Cartridge body 63 magneto-optical disk 64 shutters 65 openings 66 recess 70 Locking action 71 Pull-in operation 72 Lowering motion 73 Lifting motion 74 Push-out operation 75 Lock release operation 80 Hook member 81 turntable 100 warm 101 gears 101a worm wheel 102, 103, 104 spur gears 104a Spur gear part 104b taper 105 bracket 106 axis 109 rotation transmission path 110 Worm gear mechanism 120 Emergency unloading mechanism 121 axis 121a split groove 121b Hemispherical portion 122 crown gear 123 bracket 124 Compression coil spring 130 screwdriver

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yoshinori Tanki 1601 Sakai, Atsugi, Kanagawa Mitsumi Electric Co., Ltd. Atsugi Plant (56) References JP-A-5-182333 (JP, A) (58) Field (Int.Cl. ⁷ , DB name) G11B 17/04 413

Claims (2)

(57) [Claims] 1. An automatic loading unit that is operated by a loading motor through a rotation deceleration transmission mechanism to load and unload a disc, and a reproducing unit that reproduces at least information from the loaded disc. In the disk device having the above-mentioned structure, an emergency operation is performed by operating from the outside in an emergency, cutting the rotation transmission path of the rotation reduction transmission mechanism at an intermediate position, and rotating the rotating body on the output side of the rotation reduction transmission mechanism. A disk device comprising a loading means. 2. A rotating body on the output side of the rotation deceleration rotation transmitting mechanism is provided so as to be displaceable along a fixed shaft, meshes with a rack of the automatic loading means, and an output is provided near one end. The emergency unloading means is a spur gear that meshes with the second gear from the side, and the emergency unloading means is a shaft that moves in the longitudinal direction by a pushing operation and that rotates by a turning operation, and a crown gear that is fixed to the shaft. When the shaft moves in the longitudinal direction, the tip of the shaft displaces the spur gear along the fixed shaft and disengages it from the second gear, and the crown gear becomes the spur gear. The disk device according to claim 1, wherein the disk device is configured to mesh with each other.