JPH0650865Y2 - Disk device automatic loading mechanism - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a disk device such as a CD player and a CD-ROM driver, which can be used as a disk cartridge in which a disk is housed in a case. Automatic loading mechanism.

[Prior Art] When automatically loading a disk cartridge in a disk device using a disk cartridge, such as a CD player that uses a CD cartridge in which a compact disk is housed in a case and is used as a cartridge. , An automatic loading mechanism as shown in FIG. 7 is adopted. FIG. 7 is a bottom view of an essential part showing the internal structure of the disk device. A drive motor 2 for automatically loading a disk cartridge is fixed to the back surface of a chassis 1 of the disk device, and an output shaft 3 of the drive motor 2 is fixed to the drive motor 2. The worm 4 is fixed, and the rotation of the worm 4 is a worm wheel 5, a gear 7 meshed with the gear 6 integrated with the worm wheel 5, a gear 9 meshed with the gear 8 integrated with the gear 7, a final stage meshed with the gear 9. The gear 11 is sequentially transmitted to the gear 10, and the rotation of the final gear 10 drives the rack 11 that meshes with the final gear 10 in the front-rear direction of the disk device main body (arrow (a) direction). The rack 11 is provided integrally with a movable side plate 13 that is attached to a fixed side plate 12 fixed to the disk device body so as to be movable in the front-rear direction.
The driving motor 2 is driven to drive the gear transmission mechanism (that is, reference numeral 4,
The rack 11 via the 5,6,7,8,9,10 gears)
And when moving the movable side plate 13 integrated with this back and forth,
A cartridge holder (not shown) that holds the disk cartridge 14 moves back and forth together with the movable side plate 13, and the cartridge holder 14 moves up and down at its retracted end position (moving limit on the right side in FIG. 7), It is a mechanism for loading and ejecting the disc cartridge.

[Problems to be Solved by the Invention] Generally, in a gear transmission mechanism using a worm on the drive side, the worm cannot be rotationally driven by an operation from the driven side. It is not possible to manually load the disc cartridge by moving the holder side. Therefore, for example, when there is a power failure or a failure in the power supply unit of the disk device, it is naturally impossible to automatically eject the disk cartridge, and it is not possible to eject the disk cartridge manually. .

The present invention has been made to solve the above-mentioned conventional drawbacks, and an object thereof is to provide an automatic loading device capable of ejecting a disk cartridge even when the power is off.

[Means for Solving the Problems] The present invention for solving the above problems is directed to a drive motor for automatically loading a disk cartridge, and a gear transmission including a worm and a worm wheel for transmitting rotation of an output shaft of the drive motor. A movable side plate that is equipped with a mechanism and a rack that meshes with the final gear of this gear transmission mechanism and that is movable in the front-back direction of the disk device body, and when this movable side plate is moved back and forth, it moves back and forth and moves backward. In an automatic loading mechanism of a disk device provided with a cartridge holder attached to the movable side plate so as to move up and down at an end position, at least a part of gears on the driven side of the worm wheel of the gear transmission mechanism has a front stage thereof. It is possible to move in the gear axis direction until it disengages with the gear of And an operating member for manual ejection which is movable in the front-rear direction by engaging the movable side plate with the disk device main body in the front-rear direction, and manually pulling the operating member forward to move the movable part. The gear is moved in the direction of the gear axis to disengage the partial gear from the front gear or the rear gear or rack, and is further pulled out to eject the disc cartridge. It is an automatic loading device for a disk device.

[Operation] In the above configuration, when the ejecting operation by driving the driving motor cannot be performed due to an accident such as a power failure, pulling out the operating member for manual ejecting forward,
A part of the gear of the gear transmission mechanism moves in the gear axis direction, and this disengages the front gear or the rear gear or the rack that meshes with this gear and disconnects the torque transmission between the rack and the worm. Therefore, the rack and the movable side plate integrated with the rack can be manually moved.
Then, when the operating member is further pulled out, the operating member engages with the movable side plate and the movable side plate moves forward together with the operating member, and the movable side plate drives the cartridge holder forward to eject the disc cartridge manually. Done.

[Embodiment] An embodiment of the present invention will be described below with reference to FIGS. 1 to 6.

FIG. 1 is a plan view mainly showing a loading mechanism of a disk device such as a CD player, FIG. 2 is a view of an essential part II in FIG. 1, and FIG. 3 is a view of an essential part III in FIG. Fig. 4 is a bottom view showing the loading mechanism,
FIG. 5 is a sectional view taken along the line VV in FIG. 4 (however, it is shown in the original vertical relationship). Reference numeral 20 indicates a main body case, and fixed side plates are provided on both sides inside the main body case 20.
21 are fixed, movable side plates 22 are attached to the inside of each fixed side plate 21 so as to be movable in the front-back direction of the disk device main body (left-right direction in FIG. 1 and the like), and a rack 23 is provided below one movable side plate 22.
Are provided integrally. The fixed side plate 21 is a movable side plate.
A pin 24 that fits in a guide hole 22a for front-rear movement formed in 22 is fixed, and the movable side plate 22 is guided by this pin 24 and is movable in the front-rear direction. In addition, the fixed side plate 21 is provided with two hook-shaped lifting guide holes 21a at two positions, while the movable side plate 22 has a dogleg-shaped lifting guide hole 22a corresponding thereto.
b is opened (in the embodiment, the front side (see FIG. 1,
The left and right guide holes 22b in FIG. 3 and the like are continuous with the front-rear movement guide holes 22a), while the disc cartridge holder (hereinafter simply referred to as the holder) 27 holds the disc cartridge 26. Engaging pins on both sides of
27a is fixed, and in the holder 27, the engaging pin 27a penetrates both the raising / lowering guide hole 22b of the movable side plate 22 and the raising / lowering guide hole 21a of the fixed side plate 21 to form the movable side plate 22 and the fixed side plate 21. Engaged and supported. And holder 27
Is moved forward and backward together with the movable side plate 22 and is moved up and down at the backward end position.

A drive mechanism that engages with the rack 23 and drives the rack 23 and the movable side plate 22 integral with the rack 23 back and forth will be described. A drive motor is provided on the rear surface of a chassis 28 fixed to the main body case 20 by fixing means (not shown). 29 is fixed, and the worm 30 is fixed to the output shaft 29a of the drive motor 29. The chassis 28 includes a worm wheel 31 that meshes with the worm 30 and a gear 32 that is integral with the worm wheel 31, a gear 33 that meshes with the gear 32, a gear 34 that is integral with the gear 33, and a gear 34.
Gear 35 that meshes with the last gear 36 that meshes with this gear 35
Is attached. The worm 30, the worm wheel 31, the gears 32, 33, 34, 35 and the final gear 36 constitute a gear transmission mechanism 37.

In the present invention, as shown in detail in FIGS. 5 and 6, the final stage gear 36 is attached to the chassis 28 so as to be vertically movable. That is, the shaft 38 is fixed to the chassis 28, and the final stage gear 36 is attached to the hollow shaft 39 slidably fitted to the shaft 38.
Is fixed, the collar 40 is fixed on the upper part of the hollow shaft 39, and the shaft 38
A spring 43 for urging the collar 40 downward is provided on the. Further, on the chassis 28, an operation member 41 for moving the final gear 36 up and down to release the meshing with the gear 35 of the preceding stage and to move the movable side plate 22 forward is movable in the front-rear direction. It is provided. The operation member 41 has a rear end side having a U-shaped cross section, a front side has a flat plate shape, and is supported slidably in a front and rear direction by a support pin 42 fitted into an elongated hole 41b formed in the flat plate portion 41a, An elongated hole 41c is also formed in the shaft 38 portion. And, in front of the lower part of the U-shaped cross section, a groove 41d for inserting the hollow shaft 39 is formed.
The inclined plate portion 41e having is provided integrally. Further, the flat plate portion 41a is provided with a protrusion 41f that engages with the movable side plate 22 in the front-rear direction, and the movable side plate 22 is provided with a protrusion 22c that engages with the protrusion 41f.

When the operation member 41 is pulled out forward, the inclined plate portion 41e pushes up the flange portion 40 to raise the final stage gear 36 and release the meshing with the preceding stage gear 35, and at the same time, moves the movable side plate 22 in the front-back direction. It is intended to be moved manually. The mechanism in which the final stage gear 36 is movably supported by the inclined plate portion 41e of the operation member 41, the shaft 38, the hollow shaft 39, the spring 43, etc., is engaged with the final stage gear 36 and the preceding stage gear 35. And a disengagement mechanism for releasing.
The rear end of the operating member 39 is biased rearward by a spring 44. Reference numeral 45 is a spindle motor, and reference numeral 46 is a turntable.

Next, the operation will be described.

During normal automatic loading, when the drive motor 29 rotates, the worm 30 rotates, the worm wheel 31 rotates, the gear 32 integrated with the worm 31 rotates, and the gear 33 meshing with the gear 32 and the gear 33 integrated with the gear 32. The gear 34 of this gear rotates, and the gear 35 that meshes with this gear 34 rotates and the final gear
36 rotates, and the rack 23 that meshes with the final gear 36 is driven back and forth. Then, when loading the ejected disk cartridge 26 into the rack,
When the movable side plate 22 moves rightward in FIG. 3 together with 23, the pin 27a fixed to the holder 27 moves together with the movable side plate 22 along the horizontal portion of the lifting guide hole 21a of the fixed side plate 21, and the retracted end position. Then, when the movable side plate 22 further moves rearward, the pin 27a descends along the vertical portion of the elevating guide hole 21a, the holder 27 integrated with the pin 27a and the disc cartridge 26 descend, and the disc 26a turns into a turntable 45. Set on. Also, the disc cartridge 26
When it is ejected, it rises in the opposite operation to the above, and then advances to the front side and is ejected.

When the ejecting operation by the drive motor 29 cannot be performed due to an accident such as a power failure, the operating member 41 is manually operated to perform the manual ejecting. That is, when the front end portion of the operating member 41 is held and pulled out by hand, the inclined plate portion 41e advances integrally, and the slanted upper surface pushes up the brim portion 36b to push up the final stage gear 36 integrated therewith, and the final stage. The engagement between the gear 36 and the gear 35 at the preceding stage is released. This allows
The rack 23 is disengaged from the worm 30 side, and the rack 23 and the movable side plate 22 integrated with the rack 23 can be manually pulled out to the front side. During this time, the operating member
The protrusion 41f of 41 and the protrusion 22c of the movable side plate 22 have not yet been engaged, and the movable side plate 22 does not move. However, when the operating member 41 is further pulled out, the projection 41f of the operating member 41 is moved to the movable side plate 22.
The movable side plate 22 is pulled out to the front side by hitting the side projection 22c, and the holder 27 and the disk cartridge 26 are ejected via the movable side plate 22. And the operating member
When the lever 41 is released, the operating member 41 is pulled in by the force of the spring 44, the projection 41f of the operating member 41 hits the rack 23 portion to move the rack 23 and the movable side plate 22 integral therewith, and the operating member 41 When the plate is further retracted, the inclined plate portion 41e is separated from the collar 40, the collar 40 is urged downward by the spring 43, and the collar 40, the hollow shaft 39, and the final stage gear 36 descend, and the final stage gear 36 moves to the preceding stage. The gear 35 is engaged again. In this way, the automatic loading is restored.

The present invention is not limited to CD players, CD-ROMs, optical video disc players, and other optical disc devices, but can also be applied to magnetic recording systems and other disc devices.

[Effects of the Invention] Since the present invention is configured as described above, it has the following effects.

By pulling out the operating member for manual ejection, the meshing of the gear between the rack and worm can be released, and at the same time the movable side plate can be moved forward, so automatic ejection by the drive motor can be performed during an accident such as a power failure. Even if it is not possible, you can directly eject the disc cartridge manually.

[Brief description of drawings]

FIG. 1 shows an embodiment of an automatic loading device of the present invention, and is a plan view mainly showing a loading mechanism of a disk device such as a CD player, and FIG. 2 is a view of an essential part II in FIG. FIG. 3 is a view of the main part of FIG. 1 taken along the arrow III, and FIG. 4 is a bottom view of the main part of the internal structure of the disk device.
5 is a sectional view taken along the line VV in FIG. 4 (however, it is shown in the original vertical relationship), and FIG. 6 is a VI in FIG.
FIG. 7 is a cross-sectional view taken along the line VI, and is a bottom view of the main part of the internal structure of a conventional CD player, which is near the automatic loading mechanism. 20 …… Disk device body case, 21 …… Fixed side plate, 21a
...... Lifting guide hole, 22 ...... Movable side plate, 22a ...... Forward and backward moving guide hole, 21b ...... Lifting guide hole, 23 ...... Rack, 24 ...... Pin, 26 ...... Disk cartridge, 27 ......
Disc cartridge holder, 27a ... Engaging pin, 29 ...
… Drive motor, 30… Worm, 31, 32, 33, 34, 35…
… Gear, 36 …… Final stage gear, 37 …… Gear transmission mechanism, 38…
… Shaft, 39 …… Hollow shaft, 40 …… Collar, 41 …… Operating member, 41
a …… flat plate part, 41b …… oblong hole, 41c …… oblong hole, 41d …… groove,
41e …… Sloping plate, 43 …… Spring, 44 …… Spring.

Claims (1)

[Scope of utility model registration request] 1. A drive motor for automatically loading a disk cartridge, a gear transmission mechanism including a worm and a worm wheel for transmitting the rotation of an output shaft of the drive motor, and a final stage gear of the gear transmission mechanism. A movable side plate that is provided with a rack and is movable in the front-back direction of the disk device body, and a movable side plate that moves back and forth when the movable side plate is moved back and forth and moves up and down at the retracted end position. In an automatic loading mechanism of a disk device provided with an attached cartridge holder, at least a part of gears on the driven side of the worm wheel of the gear transmission mechanism is engaged with a gear at a front stage or a gear at a rear stage or the rack. It is provided so that it can move in the direction of the gear axis until it comes off, An operating member for manual ejection that is movable in the front-rear direction by engaging with a play in the direction is provided, and this operating member is manually pulled out forward to move a part of the front-rear movable gears in the gear axis direction to An automatic loading device for a disk device, which is provided with a mechanism for releasing engagement of a part of gears with the preceding gear or the latter gear or rack, and further withdrawing to eject the disk cartridge.