JPH05234210A - Disk driving device - Google Patents

Abstract

PURPOSE:To provide a port opening/closing mechanism of an optical disk driving device capable of getting a dustproof effect without increasing the quantity of parts and to provide a cartridge locking mechanism of the optical disk driving device capable of smoothly ejecting a cartridge without increasing the quantity of parts. CONSTITUTION:By attaching a cam groove 11b for opening/closing the dustproof door to a cam plate 11 for moving a holder, the dustproof effect can be obtained without increasing the quantity of parts. Also by making lock levers 38, 52 for locking the cartridge to provide energizing forces for locking and for cartridge ejecting, a rotating force for locking the cartridge and an ejecting force of cartridge are exerted by one part without increasing the quantity of parts, and a lever spring force for opening the shutter can be reduced, then the cartridge is smoothly ejected.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk drive device, and more particularly to a cartridge insertion opening / closing mechanism, a cartridge lock mechanism, and an emergency eject mechanism.

[0002]

2. Description of the Related Art In a conventional insertion opening opening / closing mechanism such as an optical disk drive, when a recording disk is placed on a spindle motor, the insertion opening arranged on the front surface of the apparatus is closed by a door.

[0003]

However, since the inner surface of the door that acts to close the insertion port comes into contact with the disk cartridge that houses the recording disk therein and does not completely close the insertion port, the door and the insertion port are not closed. The dust in the atmosphere enters the inside of the apparatus through the gap between the mouth and adheres to the surface of the head, which has a drawback that there is a high possibility that a read error will occur during recording and reproduction. In addition, JP-A-2-30476
In No. 7, the cover is moved to the insertion port when loading is completed and the insertion port is closed separately from the door (shutter), but a cover other than the door is required and the number of parts increases and the cost increases. There is a problem such as.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to solve the above problem and to provide an insertion opening opening / closing mechanism of an optical disk drive which can provide a dustproof effect without increasing the number of parts. ..

Further, another object of the present invention will be described. First, a conventional example is shown in FIGS. When the cartridge 31 is inserted into the holder 32 in the direction of arrow A in FIG. 17, the insertion of the cartridge 32 is completed by the stopper (not shown) on the holder 32. At this time, the lock lever 36 on the holder 32 is biased in the direction of arrow B in FIG. 17 by the spring 37, but is prevented from rotating by the lock stopper 35 on the frame 34. Here, when the cartridge 31 is further pushed in the direction of arrow A, the holder 32 moves in the direction of arrow A together with the cartridge 31 because it is a stopper (not shown). Then, the lock stopper 35 and the lock lever 36 are disengaged and rotated in the arrow C direction, the tip of the lock lever 36 is engaged with the groove 31 a of the cartridge 31, and the cartridge 31 is fixed to the holder 32.

When discharging the cartridge, the lock lever 36 contacts the lock stopper 35 when the holder 32 moves in the direction of arrow D in FIG. When the holder 32 further moves in the direction of arrow D against the urging force of the spring 37, the lock lever 36 rotates in the direction of arrow C in FIG. 17, the cartridge 31 is unlocked, and the cartridge 31 is released by the shutter open lever. Due to the spring force (not shown),
It is discharged to the outside of the device.

In the case of this mechanism, the number of parts increases and
There is a problem that the spring force of the lock lever becomes a negative force when the cartridge is ejected. Therefore, an object of the present invention is to solve the above problem, and to provide a cartridge lock mechanism of an optical disk drive that can smoothly eject a cartridge without increasing the number of parts.

[0008]

In order to achieve the above object, the present invention is configured as follows. According to a first aspect of the present invention, there is provided a dustproof door which is provided at an insertion opening for inserting the cartridge into the apparatus and is always urged in a direction to close the insertion opening, and a cartridge which is inserted into the apparatus. A loading mechanism that includes a holder, a cam plate that moves the holder to a predetermined position inside the apparatus, a guide plate that movably supports the cam plate, and a drive mechanism that moves the cam plate. The cam plate is configured to have a cam groove that opens and closes the dustproof door by horizontal movement of the cam plate.

According to a second aspect of the present invention, in the above-mentioned structure, the dustproof door is movably inserted into longitudinal guide grooves provided on both side surfaces of a front panel of the apparatus. On the other hand, a door lever that engages with the shaft portion of the dustproof door and rotates about the guide plate by the movement of the cam plate to move the shaft portion of the dustproof door in the guide groove, and the door lever. And a biasing member that constantly biases the dustproof door to rotate in the direction in which the dustproof door is closed.

According to a third aspect of the present invention, in a cartridge loading / unloading mechanism for moving a holder holding a cartridge back and forth when loading and unloading the cartridge, an engaging pawl for locking the cartridge to the holder is provided. A first elastic arm portion for urging the joint in a direction to lock the cartridge, an abutting portion for abutting on the cartridge, and an abutting portion for abutting the abutting portion on the cartridge at the time of ejecting the cartridge to assist cartridge ejection. A lock lever having a second elastic arm portion that elastically applies force is configured.

According to a fourth aspect of the present invention, there is provided a cartridge loading / unloading mechanism for moving a holder for holding a cartridge back and forth during loading and unloading of the cartridge,
A lock lever having an engagement pawl that locks the cartridge to the holder and an abutment portion that abuts the cartridge; and an abutment portion that biases the engagement pawl of the lock lever in an unlocking direction and ejects the cartridge. And an urging member for abutting against the cartridge to give a force for assisting the ejection of the cartridge to the cartridge.

[0012]

According to the configuration of the invention according to claim 1,
Since the cam plate that moves the holder has a cam groove for opening and closing the dustproof door, the dustproof effect can be obtained without increasing the number of parts, and the position of the cartridge in the holder and the opening and closing of the dustproof door can be prevented. The timing can be surely taken, and the malfunction can be effectively prevented.

According to the third aspect of the invention, since the lock lever is provided with the abutting portion and the first and second elastic arm portions, the cartridge is made up of one component without increasing the number of components. In addition to obtaining the rotating force to lock
Since it also acts as the ejection force when ejecting the cartridge from the holder, the shutter open lever spring force can be weakened and the cartridge can be ejected smoothly. This is because the conventional structure of the shutter open lever has the weakest spring force at the moment when the lock lever is unlocked, so if the spring force is set accordingly, the spring force after that becomes too strong and the cartridge However, if the spring force is set so that smooth ejection can be performed, even if the lock lever is unlocked and the cartridge becomes free, the spring force at this time is This is because it was too weak to eject the cartridge. On the other hand, the contact portion of the lock lever of the present invention has a short elastic stroke, and the strongest spring force can be obtained at the moment when the lock of the cartridge is released. Therefore, if the above two elastic forces are combined, the cartridge can be discharged smoothly. Can be done.

According to the structure of the invention of claim 4, the urging force of the lock lever can also be used as the force for ejecting the cartridge. That is, by providing the biasing member capable of exerting the biasing force in the unlocking direction of the lock lever, the force for unlocking the cartridge can be obtained without increasing the number of parts so much, and the cartridge is ejected from the holder. Since it also serves as the ejection force at the time, the shutter open lever spring force can be weakened and the cartridge can be ejected smoothly.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments according to the present invention will be described below with reference to FIGS.
6 will be described in detail. As shown in FIG. 1, an insertion opening opening / closing mechanism of an optical disk drive according to an embodiment of the present invention includes a cartridge 5 containing a disk recording medium 4.
In a disk drive device which has a loading mechanism for inserting / discharging, and which records and reproduces information by pulling the cartridge 5 into the front panel 2 from the cartridge insertion port 2b by the loading mechanism, the cartridge 5 is provided in the cartridge insertion port 2b. It is characterized in that it further comprises an openable / closable dustproof door 6 and an opening / closing means for opening / closing the dustproof door 6 in conjunction with the cartridge insertion / ejection operation by the loading mechanism.

FIG. 1 is an external view of the optical disk drive device according to the above embodiment, in which a cartridge 5 containing a recording medium 4 is inserted from a cartridge insertion port 2b of a front panel 2. 4 and 5 show a loading mechanism part, and the holder 10 holding the cartridge 5 has four guide rollers 10a, and each roller 10a is shown in FIGS.
As shown in FIG. 6, each groove 11 a of the cam plate 11 and each guide groove 12 a of the guide plate 12 are inserted. Then, the cam plate 11 is moved horizontally and in the front-rear direction with respect to the drive device by the loading motor 13 and the gear train 14 which are loading drive systems, and the holder 10 containing the cartridge 5 performs the loading operation. The cam plate 11 has a door opening / closing groove 11b at the center between the grooves 11a and 11a.
have. The guide plate 12 also has the guide grooves 12a and 12a.
It has a groove 12b in the central portion between and. Guide plate 12
A door lever shaft 12c for rotatably supporting a support shaft 7c of a door lever 7 for vertically moving the dustproof door 6 is crimped at. As shown in FIG. 11, the door lever 7 is rotatable about a central support shaft 7c, and a rear end of the door lever 7 is guided to a door opening / closing groove 11b of a cam plate 11 arranged inside a guide plate 12. Hole 12b in plate 12
It has a pin 7b which enters through it. By the pin 7b and the door opening / closing groove 11b of the cam plate 11, the dustproof door 6 is vertically moved in connection with the loading operation.
Further, the shaft 6a of the dustproof door 6 is inserted into the U-shaped groove portion 7a at the tip of the door lever 7, and is inserted into the elongated hole portion 2a (see FIG. 1) of the front panel 2 outside thereof. Further, the door lever 7 is biased by a spring 8 and a torsion spring 9 (see FIGS. 6 and 7) in a direction in which the dustproof door 6 is always closed.

The operation of the dustproof door 6 will be described in detail below. The dustproof door 6 in this embodiment is shown in FIG. 2 (A) with the insertion port closed, in FIG. 2 (B) when the cartridge is inserted, and in FIG.
FIG. 2D shows a cartridge insertion completed state, and FIG. 2E shows a conventional insertion opening opening / closing mechanism. From this, the dustproof door 6 simply rotates about its rotation shaft 6a when the cartridge 5 is inserted into the insertion port 2b.
As shown in the enlarged view of FIG. 2 (C), the rotary shaft 6 of the dustproof door 6 is inserted from the time when the cartridge 5 is completely inserted into the drive device.
a descends along the back surface of the front panel 2 and the dustproof door 6 is opened by the biasing force of the spring 8 and the torsion spring 9.
In the order of IV to IV, the front panel 2 is rotated along the back surface thereof, and the rotary shaft 6a of the dustproof door 6 is raised to close the insertion opening 2b by the dustproof door 6.

To carry out this operation, as shown in FIG. 12, when the cartridge 5 is inserted through the insertion opening 2b and the dustproof door 6 is opened as shown in FIG. 2B to start the cartridge loading operation, The rollers 10a of the holder 10 are located near the upper ends of the grooves 11a of the cam plate 11 and the bent upper portions 12a _{3 of the} grooves 12a of the guide plate 12. The pin 7b of the door lever 7 is located at the wide end 11b ₄ of the groove 11b of the cam plate 11 and the lower end of the groove 12b of the guide plate 12. At this time, the door lever 7 does not rotate, and thus the rotation shaft 6a of the dustproof door 6 remains positioned at the upper end of the groove 2a of the front panel 2. 12 to 16, the cam plate 11 and the guide plate 12 are shown in a state in which the left and right are reversed from the states shown in FIGS. 9 and 10, respectively.

Then, as shown in FIG. 13, as the cartridge 5 is inserted into the driving device, the cam plate 11 moves in the cartridge insertion direction (leftward in FIG. 13) with respect to the guide plate 12, and the roller 10a. Is each groove 11 above
The cartridges 5 a and 12 a are relatively moved in FIG. The roller 10a remains positioned on the upper end of the groove 11b in the cam plate 11, but moves relative to the horizontal portion 12a ₂ of the groove 12b of the guide plate 12. At this time, the pin 7b of the door lever 7 is located at the same position as the previous position. At this time, the door lever 7 does not rotate, the rotary shaft 6a of the dustproof door 6 does not move, and the dustproof door 6 remains in the state of FIG. 2 (B).

Then, as shown in FIG. 14, when the cartridge 5 is completely inserted into the drive unit, the roller 10a moves from the horizontal portion 12a ₂ of the guide plate 12 to the vicinity of the bent lower portion 12a _1. Move to. At this time,
The pin 7b of the door lever 7 is a groove 11b of the cam plate 11.
Inside, it moves relatively from the wide portion 11b ₄ to the inclined portion 11b ₂ via the narrow portion 11b _{3 and also} to the upper end portion of the groove 12b of the guide plate 12. At this time, the door lever 7 rotates clockwise around the support shaft 7c to rotate the dustproof door 6
Lower the rotating shaft 6a of the above to the lower end position in the groove 2a,
The dustproof door 6 moves as shown in FIGS. 2 (C) and 3.

Then, as shown in FIG. 15, when the cartridge 5 is completely inserted into the drive unit, the roller 1
0a relatively moves from the horizontal portion 12a ₂ of the guide plate 12 to the vicinity of the bent lower portion 12a ₁ . At this time, in the groove 11b of the cam plate 11, the pin 7b of the door lever 7 moves relatively from the wide portion 11b ₄ to the inclined portion 11b ₂ via the narrow portion 11b ₃ and the guide plate 1
It moves to the upper end of the second groove 12b. As a result, the door lever 7 starts to rotate counterclockwise, the rotary shaft 6a of the dustproof door 6 starts to rise from the lower end position, and the dustproof door 6 is moved to the position shown in FIG.
As shown in (D), the insertion opening 2b is closed.

Then, as shown in FIG. 16, when the cartridge 5 is completely inserted into the driving device, the roller 10a is relatively moved from the horizontal portion 12a ₂ of the guide plate 12 into the bent lower portion 12a ₁ . Moving. At this time, in the groove 11b of the cam plate 11, the pin 7b of the door lever 7 relatively moves from the inclined portion 11b ₂ to the horizontal portion 11b _1, and also moves to the lower end of the groove 12b of the guide plate 12. The rotating shaft 6a of the dustproof door 6 moves to the upper end of the groove 2a, but the dustproof door lever 6 keeps the insertion opening 2b closed.

According to the above embodiment, the cam plate 11 for moving the holder 10 is provided with the cam groove 11b for opening and closing the door, so that the dustproof effect can be obtained without increasing the number of parts, and Thus, the position of the cartridge 5 in the holder and the timing of opening and closing the door can be surely taken, and the malfunction can be effectively prevented. Also,
When the cartridge is inserted, the dustproof door 6 is pushed by the cartridge 5 and rotates about the shaft 6a of the dustproof door 6 to prevent the cartridge 5 from being inserted, and then the shaft 6a of the door descends downward. 6a is rotated in the vertical direction and then lifted in a vertical position to close the insertion slot 2b, so that the space from the rear of the cartridge to the front panel 2 may be small, which is very effective for downsizing the entire apparatus. To do. That is, in the prior art, as shown in FIG. 2 (E), the distance M was at least required for the length of the dustproof door, but in the present embodiment, as shown by the distance L in FIG. 2 (D). This is because a distance smaller than the length of the dustproof door 6 is sufficient.

(Cartridge Lock Mechanism) A cartridge loading / unloading mechanism according to an embodiment of the present invention is shown in FIGS.
0 and 21 are shown. A frame 46 is mounted on a drive chassis 40 having a pickup 42 and a spindle motor 41 in a space surrounded by a cover 48 and a front panel 39. The frame 46 has a groove 46a for restricting the movement of the holder 43 in the arrow E and F directions of FIG. 19 and the arrow G and H directions of FIG. Below the holder 43, there is a cam plate 47 having a cam groove, which moves in the directions of arrows E and F in FIG. 19 in order to move the holder 43 when the cartridge is loaded and ejected.
The lock lever 38 is rotatably attached to the holder 43. The lock lever 38 is made of synthetic resin, and has an engaging pawl 38c that locks the cartridge 51 to the holder 43 and a first elastic arm portion 38e that urges the engaging pawl 38c in a direction that locks the cartridge 51.
And a contact portion 38a that contacts the cartridge 51,
A second elastic arm portion 38f that elastically gives a force for assisting the cartridge ejection by abutting the contact portion 38a on the cartridge 51 when the cartridge is ejected. The lock lever 38 may be made of a material in which at least the first and second elastic arm portions 38e and 38f have elasticity.

The operation of the cartridge loading mechanism having the above structure will be described below. When the cartridge 51 is inserted from the front panel 39, the shutter open lever 4
The roller 44a of No. 4 hits. When the cartridge 51 is further inserted, the shutter open lever 44 rotates in the direction of arrow I in FIG. 19 against the shutter open lever spring 45 while the shutter open lever 44 opens the shutter of the cartridge 51. When the insertion of the cartridge 51 is further advanced, the shutter open lever 44 stops rotating by a stopper (not shown). As a result, the cartridge 51 cannot be inserted into the holder 43 any more. At this time, the second elastic arm portion 32f of the contact portion 38a of the lock lever 38 is pushed by the cartridge 51 and elastically deformed (see FIGS. 22 and 23).
If the cartridge 51 is further pushed in the direction of arrow E in FIG. 22, the cartridge 51 cannot be pushed further inward by the shutter open lever 44 on the holder 43, and therefore the holder 43 and the shutter open lever 44 on the holder 43. The cartridge 51 advances in the direction of arrow E along with the lock lever 38. The lock lever 38 tries to rotate in the arrow J direction in FIG. 23 because the contact portion 38a is pushed by the cartridge 51 against the biasing force of the second elastic arm portion 32f. At this time, as shown in FIG. 23, since the one end 38b of the lock lever 38, which is not so elastic, was in contact with the stopper 46c of the frame 46, it could not rotate, but the holder 43 moved in the arrow E direction. , One end 38b of the lock lever 38 as shown in FIG.
23 can rotate without abutting against the stopper 46c of the frame 46, the lock lever 38 rotates in the direction of arrow J in FIG. 23, and the pawl 38c of the lock lever 38 is urged by the first elastic arm portion 32e to urge the cartridge 51 to move. The holder 43 and the cartridge 51 are integrated with each other by engaging with the groove 51a (see FIG. 24).

By the rotation of the lock lever 38, the other end 38d of the lock lever 38, which was in contact with the switch 49, is released, and the switch 49 is turned off. Further, by rotating the shutter open lever 44, another switch 50 shown in FIG. 19 is turned on. When the switch 49 is turned off and the switch 50 is turned on, loading is started, a loading motor (not shown) rotates, the cam plate 47 moves in the direction of arrow E in FIG.
Is further moved in the direction of arrow E to move downward along the groove of the frame 46, and the loading is completed.

At the time of unloading, a loading motor (not shown) rotates in the direction opposite to that at the time of loading,
The cam plate 47 moves in the direction of arrow F in FIG. 19 by a gear train (not shown). This causes the holder 43 to move to the frame 46.
Moves up along the groove and moves in the direction of arrow F. When the holder 43 moves in the direction of arrow F, one end 3 of the lock lever 38
8b hits the stopper 46c of the frame 46, and the lock lever 38 rotates in the direction of arrow K in FIG. 23 against the biasing force of the second elastic arm portion 32f of the contact portion 38a of the lock lever 38 (see FIG. 23).

When the groove 51a of the cartridge 51 and the pawl 38c of the lock lever 38 are released, the cartridge 51 becomes
The urging force of the second elastic arm portion 32f assists the cartridge 51 in the ejection direction via the contact portion 32a, and the urging force of the shutter open lever spring 45 ejects the cartridge 51 to the outside.

According to the above embodiment, since the lock lever 38 is provided with the abutting portion 38a and the first and second elastic arm portions 32e and 32f, the cartridge is a single component without increasing the number of components. In addition to obtaining the rotational force that locks 51, it also acts as the ejection force when ejecting the cartridge 51 from the holder 43, so the shutter open lever spring force can be weakened, and the cartridge 51 can be ejected smoothly. it can. This is because, due to the configuration of the shutter open lever 44, the spring force is weakest at the moment when the lock lever 38 is unlocked. Therefore, if the spring force is determined in accordance with this, the spring force after that becomes too strong, and the cartridge becomes too strong. 51 cannot be discharged smoothly, and conversely, if the spring force is set so as to discharge smoothly, even if the lock lever 38 is unlocked and the cartridge 51 becomes free, This is because the spring force is too weak to tend to eject the cartridge 51.
On the other hand, the contact portion 3 of the lock lever 38 of this embodiment is
8a has a short elastic stroke, and the strongest spring force can be obtained at the moment when the cartridge 51 is unlocked. Therefore, by combining the two springs, the cartridge can be discharged smoothly. Therefore, if the lock lever 38 is used, a single component can be used as a cartridge lock mechanism, a spring mechanism, and a switch on / off mechanism.

Modifications of the above embodiment are shown in FIGS. In this modification, the lock lever 52 does not have an elastic arm portion and is made of a rigid body, but a lock lever spring 53 for urging the lock lever 52 is provided.

In this modified example, when the cartridge 51 is loaded, it hits the arm 52a of the lock lever 52. When the insertion of the cartridge 51 is further advanced, the lock lever 52 is moved against the lock lever spring 53.
Rotates in the direction of arrow L, the groove 51a of the cartridge 51 and the pawl 52b of the lock lever 52 are engaged, and the holder 43 and the cartridge 51 are integrated. By the rotation of the lock lever 52, the contact between the second arm 52c of the lock lever 22 and the switch 49 is released, and the switch is turned off. Further, since the switch 50 is turned on by the rotation of the shutter open lever 44, loading starts, and a loading motor (not shown) rotates to rotate the cam plate 47.
Moves in the direction of arrow M, moves the holder 43 further in the direction of arrow M, and moves downward along the groove of the frame 46 to complete loading. When the holder 43 moves in the direction of the arrow M, the user's hand is released, and the lock lever spring 53 tries to release the lock.
The second lever 52c and the pawl 48a of the frame 48 are engaged with each other so that the lock lever 52 cannot rotate further and the lock cannot be released. At the time of discharging the cartridge, initially, the pawl 46d of the frame 46 and the arm 52c of the lock lever 52 are engaged with each other, but when the holder 43 continues to move in the direction of the arrow N, the pawl 46d of the frame 48 and the lock 46d are locked. The arm 52c of the lever is disengaged, the lock lever 52 is rotated in the direction of the arrow O by the force of the lock lever spring 53, the holder 43 and the cartridge 51 are unlocked, and the lock lever spring 53 The cartridge 51 is ejected by the force of the shutter opener spring 45.

If the cartridge lock mechanism as described above is used, the spring force of the lock lever 52 can also be used as the cartridge ejection force. That is, the lock lever 52
By mounting the spring 53 in the unlocking direction, the force for unlocking the cartridge 51 can be obtained without increasing the number of parts so much, and it also serves as the discharging force when the cartridge 51 is discharged from the holder 43. The lever spring force can be weakened, and the cartridge 51 can be discharged smoothly.

(Emergency Eject Mechanism in Optical Disk Drive) In a recordable optical disk apparatus, the contents important to the user are recorded, so that the cartridge must be taken out even in an emergency. Therefore, as an emergency eject mechanism in the conventional optical disk drive, it was very troublesome to rotate the motors 42 times by hand.

In another conventional example, the entire cartridge is not completely housed in the main body, and the drive main body is vertically mounted to the cartridge without closing the door of the cartridge insertion opening of the front panel. It has become. At the time of an emergency eject, the drive body is separated from the cartridge and the cartridge can be taken out by pushing the emergency eject lever in the cartridge insertion opening from the outside. That is, in this type. The cartridge has a mechanism that does not horizontally move from the set position of the drive in the back direction, and the insertion opening on the front panel remains open during use of the device, which may cause dust and dirt inside. ..

Therefore, as shown in FIGS. 29 to 36, the emergency eject mechanism according to the embodiment of the present invention is used when a power failure occurs in a mechanism in which a cartridge is completely housed in a drive like a home video front loading mechanism. It is an emergency eject mechanism such as the one that can be performed with one touch and a little load force, and can easily return to normal operation thereafter. The present embodiment relates to a loading mechanism for reciprocating a disk cartridge in an optical disk drive from a front insertion slot to a mounting position of a turntable of the apparatus, which uses a motor and a gear train as a loading power source. As a method of ejecting the disk cartridge even in an emergency such as a power failure, the spring force is always attached so as to work in the direction of unloading the cartridge holder, and at the time of loading, it is against the spring force and the motor and worm gear etc. When the cartridge is driven, the worm gear is held when the loading is completed, and in the event of an emergency, the cartridge is unloaded by engaging and disengaging the worm gear and the wheel gear in the drive gear train. This will be described in detail below.

29 and 30 show a loading drive system in which the power of the motor 67 is gear 62, gear 63a, worm gear 63, wheel gear 64, gear 69, gear 65.
a, the pinion gear 65, the rack gear 66, and the cam plate 68 to which the rack gear 66 is attached. The gear train and the motor 67 are supported by a bracket 71. The wheel gear 64 is rotatably contained in a U-shaped (see FIG. 33) wheel plate 90, and the lower surface of the wheel plate 90 has a raised portion 6 having an inclined portion of the slide 67.
It is slidably mounted on 7a. Therefore, slide 6
When 7 is moved in the direction B of FIG. 29 (see slide 67 shown in dotted lines in FIG. 33), the ridge 6 of slide 67 is
7a to the lower surface of the wheel plate 90 is the spring 70
By the urging force of (see the state indicated by the dotted line in FIG. 33). That is, the wheel plate 90 and the wheel gear 64 move in the direction of C in FIG. 33, and the wheel gear 64 is disengaged from the worm gear 63 as shown in FIG.

As a result, the cam plate 68 is moved to A in FIG.
The cartridge 7 is unloaded by the urging force of the cartridge discharge spring 92 (see FIG. 29).
3 will be discharged.

By moving the cam plate 68 in the direction A of FIG. 34 to eject the cartridge 73,
3, the protrusion 68a of the plate 68 returns the slide 67 to the original position (the position indicated by the solid line in FIG. 33). As a result, the wheel plate 90 and the wheel gear 64 return to the state where the wheel plate 90 and the wheel gear 64 rest on the raised portion 67a of the slide 67 again, and the wheel gear 90 is connected to the worm gear 63 as shown in FIG. It should be noted that instead of the cam plate 68, another member, for example, a cartridge holding holder may be used to perform the returning operation of the slide 67.

FIG. 30 is an overall view of an optical disk drive using the emergency eject mechanism according to the present embodiment. The disk cartridge 73 is inserted from the insertion opening of the front panel 74.
Insert. The cartridge 73 is then held in the cartridge holder 75, and the cam plate 68 is
It is mounted toward the turntable 78 by being moved in the direction by the motor 61 and the gear train. Then, in an emergency, as shown in FIG. 33, by inserting the pin 91 into the hole provided in the front panel 74 and pushing the slide 67, the engagement between the worm gear 63 and the wheel gear 64 is released, and the motor 67 The drive transmission path is interrupted and unloaded as described above.

According to the above-described embodiment, since the hanging mechanism between the worm gear and the wheel gear 64 is used, it is smooth at the time of putting on and taking off and at the time of returning. In addition, the emergency ejection is possible with one touch, and the normal standby state is restored when the emergency ejection is completed. Further, by considering the advance angle direction of the worm gear and the wheel gear 64, the force at the time of putting on and taking off may be small, a special jig is not necessary, and the pin 91 is an extended one such as an office clip. But you can use it.

In the above embodiment, in the worm gear 63 and the wheel gear 64, a load is applied in the axial direction of the wheel gear 64 during unloading,
You may let the wheel escape. Further, the gear 63 adjacent to the wheel gear 64 may be a helical gear having an inclination angle in a direction in which the wheel gear 64 easily escapes during unloading. Further, when the power is turned on again after the cartridge 73 has been taken out by the emergency eject mechanism, the system control may be set to a complete unloading state.

[Brief description of drawings]

FIG. 1 is a perspective view of a disk drive device having an opening / closing mechanism for an optical disk drive device according to an embodiment of the present invention.

2A to 2D are schematic views showing the operation of the insertion opening opening / closing mechanism according to FIG. (E) is a schematic diagram showing a conventional insertion opening opening / closing mechanism for comparison.

FIG. 3 is an enlarged view of a main part of FIG.

4 is a plan view showing the loading mechanism of FIG. 1. FIG.

5 is a side view of the loading mechanism of FIG. 1. FIG.

6 is a plan view showing the relationship between the dustproof door and the door lever of the insertion opening opening / closing mechanism of FIG. 1. FIG.

FIG. 7 is a side view showing the relationship between the dustproof door and the door lever in FIG.

8 is a side view showing a roller of the insertion opening opening / closing mechanism of FIG. 1. FIG.

9 is a side view of a cam plate of the insertion opening opening / closing mechanism of FIG. 1. FIG.

10 is a side view of a guide plate of the insertion opening opening / closing mechanism of FIG. 1. FIG.

11 is a side view of a door lever of the insertion opening opening / closing mechanism of FIG. 1. FIG.

FIG. 12 is a side view showing the operation of the insertion opening opening / closing mechanism of FIG. 1.

13 is a side view showing an operation of the insertion opening opening / closing mechanism of FIG. 1. FIG.

FIG. 14 is a side view showing the operation of the insertion opening opening / closing mechanism of FIG. 1.

15 is a side view showing the operation of the insertion opening opening / closing mechanism of FIG. 1. FIG.

16 is a side view showing the operation of the insertion opening opening / closing mechanism of FIG. 1. FIG.

FIG. 17 is a diagram showing a state in which a cartridge according to the related art is being inserted.

FIG. 18 is a view showing a state where the cartridge of the prior art of FIG.

FIG. 19 is a plan view of the cartridge lock mechanism according to the embodiment of the present invention when the top plate is removed.

20 is a side view of the lock mechanism of FIG. 19 with the side plate removed.

FIG. 21 is a view from the rear (reverse of the cartridge insertion direction) when the side plate of the lock mechanism of FIG. 19 is removed.

FIG. 22 is a plan view showing the details of the lock mechanism and showing a state in the middle of insertion.

FIG. 23 is a plan view of the lock mechanism of FIG. 22 when the cartridge contacts the stopper of the holder.

FIG. 24 is a plan view when the cartridge is further inserted in the lock mechanism of FIG. 22 and the cartridge and the holder are locked.

FIG. 25 is a plan view of a lock mechanism according to a modified example of this embodiment.

FIG. 26 is a view showing a state in which the lock mechanism of FIG. 25 is being inserted.

27 is a view showing a lock lever rotation complete state in the lock mechanism of FIG.

FIG. 28 is a diagram showing the time of movement of the holder in the lock mechanism of FIG. 26.

FIG. 29 is a plan view showing a loading drive system of the emergency eject mechanism of the optical disc drive according to the embodiment of the present invention.

30 is a front view of the loading drive system of FIG. 29. FIG.

FIG. 31 is a front view of the loading drive system of FIG. 29 in a normal state.

FIG. 32 is a front view of the loading drive system of FIG. 29 during an emergency eject.

FIG. 33 is a side view of the loading drive system of FIG. 29.

34 is a plan view of an optical disc drive having the emergency eject mechanism of FIG. 29. FIG.

35 is a side view of the device of FIG. 34. FIG.

36 is a front view of the device of FIG. 34. FIG.

[Explanation of symbols]

2 ... Front panel, 2a ... Oval hole, 2b ... Cartridge insertion slot, 4 ... Disk recording medium, 5 ... Cartridge,
6 ... Dustproof door, 6a ... Door shaft, 7 ... Door lever, 7b ...
Pin, 8 ... Spring, 9 ... Torsion spring, 10 ... Holder, 10a ... Guide roller, 11 ... Cam plate, 1
1a ... Groove, 12 ... Guide plate, 12a ... Guide groove, 13 ...
Loading motor, 14 ... Gear train. 38, 52 ... Lock lever, 38a, 52a ... Abutting portion, 38c, 52b ...
Engaging pawl, 38e ... First elastic arm portion, 38f ... Second elastic arm portion, 39 ... Front panel, 40 ... Drive chassis,
43 ... Holder, 44 ... Shutter open lever, 45
... Shutter open lever spring, 46 ... Frame, 47 ... Cam plate, 48 ... Cover, 49, 50 ...
Switch, 51 ... Cartridge. 61 ... Motor, 62,
63a, 65a ... Gear, 63 ... Worm gear, 64 ... Wheel gear, 66 ... Rack gear, 67 ... Slide, 68
... Cam plate, 69 ... Gear, 71 ... Bracket, 73
... cartridge, 74 ... front panel, 75 ... cartridge holder, 90 ... wheel plate, 91 ... pin.

Claims (4)

[Claims] 1. A dustproof door provided at an insertion opening for inserting the cartridge into the apparatus and constantly urged in a direction to close the insertion opening, and a holder for holding the cartridge inserted into the apparatus. A loading mechanism that includes a cam plate that transfers the holder to a predetermined position inside the apparatus, a guide plate that movably supports the cam plate, and a drive mechanism that moves the cam plate, wherein the cam plate is An insertion opening opening / closing mechanism for a disk drive device, comprising a cam groove for opening and closing the dustproof door by horizontal movement of the cam plate. 2. The dustproof door has shaft portions at both ends thereof movably inserted into vertically elongated guide grooves provided on both side surfaces of a front panel of the apparatus, while the shaft of the dustproof door is provided. A door lever that engages with a portion and rotates around the guide plate by the movement of the cam plate to move the shaft portion of the dustproof door in the guide groove, and the door lever always rotates in the direction in which the dustproof door is closed. The urging member for urging is further provided.
An insertion opening / closing mechanism of the disk drive described in. 3. A cartridge loading / unloading mechanism for moving a holder holding a cartridge back and forth when loading and unloading the cartridge, wherein an engaging pawl for locking the cartridge to the holder and an engaging pawl for locking the cartridge. A first elastic arm that urges in the direction, an abutting portion that abuts on the cartridge, and a force that abuts the abutting portion on the cartridge during cartridge ejection to assist cartridge ejection. A cartridge lock mechanism for a disk drive device, comprising a lock lever having two elastic arms. 4. A cartridge loading / unloading mechanism for moving a holder holding a cartridge back and forth when loading and unloading the cartridge, wherein an engaging pawl for locking the cartridge to the holder and an abutting portion for abutting the cartridge are provided. A biasing member for biasing the lock lever having the lock lever and the engaging pawl of the lock lever in the unlocking direction and for giving a force for assisting the cartridge ejection by abutting the contact portion on the cartridge at the time of cartridge ejection. And a cartridge lock mechanism for a disk drive.