JPS628362A - Loading mechanism for disc device - Google Patents

Abstract

PURPOSE:To simplify a control and mechanism and to attain miniaturization by moving a clamp member based on the movement of a slide member. CONSTITUTION:In loading a recording medium cartridge 26 into a tray 84 in the direction of A and driving a motor 62, gears 64, 68, a rotary shaft 66 and pulleys 70a, 70b, 72a, 72b are driven to run belts 74a, 74b. Thus, holding members 76a, 76b are moved along guide rails 78a, 78b in the direction of A. A slide member 80 is moved toward the direction A together with the tray 84 and a fitting body 92 of the clamp member attended with the movement of the holding members. Thus, pins 82a-82d provided to the slide member are slided from the lower horizontal part to the upper horizontal part in S- shaped long holes 86a-86d provided at the side face of the tray.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention records information on a disk-shaped recording medium, reproduces information recorded on the disk-shaped recording medium, and/or
Alternatively, the present invention relates to a loading mechanism for a disk-shaped recording medium in a disk device capable of erasing information recorded on the disk-shaped recording medium. A disc device having such a loading mechanism is used, for example, as an optical disc device that records, reproduces, and/or erases information using optical means.

[Conventional technology]

With the development of today's oscilloscope electronics, optical information recording and reproducing devices that can randomly record, reproduce, and/or erase audio or image information with high performance using a light beam such as Raded light have been commercialized. . An example of such a device is an optical video disk device, which is a disk-shaped recording medium made of transparent acrylic resin or the like.
Recorded information consisting of a pattern of protrusions (pits) on the surface is detected as a digital quantity by an optical head, photoelectrically converted, then properly adjusted by an amplifier, and then transmitted through a reproduction circuit such as a D-A converter. After converting it into a predetermined analog quantity,
The signal is output from an output device such as a speaker or a CRT. In this way, the desired sound or color image can be obtained instantaneously and with high performance.

In such a disk device, the loading and unloading of a disk-shaped recording medium into the device main body is sometimes carried out manually, but as there is a growing demand for improved operability, automation is being realized.

6 and 7 are partially cutaway perspective views showing a recording medium loading mechanism in a conventional disk device, and FIG. 8 shows a recording medium being fed to a predetermined position by the loading mechanism and clamped. FIG. 9 is a sectional view taken along line IX--■.

In FIG. 9, 2 is a drive motor such as a spindle motor, and a turntable 6 is fixed to a rotating shaft 4 of the motor 2. As shown in FIG. Further, a positioning member 8 is slidably attached to the rotating shaft 4 above the turntable 6, and the positioning member 8 is separated from the turntable 6 by a coil spring 10. A centering member 12 is attached to the turntable 6 and supported by a plurality of pins passing through the positioning member 8 so as to allow the positioning member 8 to move in the vertical direction. A recess is formed on the upper surface of the centering member 12 on an extension of the rotating shaft 4 of the spindle motor 2.

Reference numeral 14 denotes a mounting plate, and a pin 16 is fixedly installed on the lower surface side of the mounting plate 14 in the same direction as the rotating shaft 4 of the spindle motor 2 so as to be located on an extension of the rotating shaft 4. . A clamp member 2o is attached to the bottle 16 via a bearing 18, so that the clamp member 2o
0 can freely rotate around the bin 16. A convex portion is formed on the lower surface side of the clamp member 20 so as to be located on an extension of the rotating shaft 4 of the spindle motor 2. Therefore, the rotating shaft 4 of the spindle motor 2 and the centering member 12
The concave portion, the bottle 16, and the convex portion of the clamp member 20 are arranged on the same straight line in the vertical direction.

Further, 22 is a tray, and a groove 22a (extending in the direction perpendicular to the plane of paper in the figure) for placing a cartridge of a disc-shaped recording medium is formed on the upper surface of the tray 22. An opening 22b larger than the diameter of the turntable 6 is formed in the tray 22 above the turntable 6.

The mounting plate 14 and the tray 22 are each independently movable in the vertical direction. The mounting plate 14 and the tray 22 are moved upward relative to the spindle motor 2, and at this time, the groove 22 & A cartridge 26 containing a disk-shaped recording medium 24 is inserted along the line and stopped at a predetermined position. Next, the tray 22 is moved downward, whereby the recording medium 24 is placed on the return tag 6, and at the same time, the positioning outer peripheral wall of the positioning member 8 is adapted to the center hole of the recording medium 24, and the positioning member 8 is moved horizontally. positioning is performed. By further moving the mounting plate 12 downward), the vicinity of the center hole of the recording medium 24 is pressed onto the turntable 6 by the outer periphery of the lower surface of the clamp member 20 and is clamped and held. At this time, as shown in the figure, the concave portion on the upper surface of the centering member 12 and the convex portion on the lower surface of the clamp member 20 are matched, and the rotating shaft 4 of the spindle motor 2 and the bin 16 are aligned, and the positioning The member 8 is pushed downward by the pressing force of the clamp member 20 against the recording medium 24 while being in contact with the center hole of the recording medium 24, and the coil spring 10 is compressed.

Thus, by driving the motor 2, the turntable 6, the positioning member 8, the recording medium 24, and the clamp member 20 are integrally rotated in the vertical direction.

The vertical movement of the mounting plate 14 is as shown in FIG.
This can be done using the surf motors 30, 31 disposed opposite to each other at both ends of the mounting plate 140 and the rank and pinion mechanism 32 provided between the motors 30, 31 and the mounting plate 14.

Next, with reference to FIGS. 6 and 7, the loading mechanism of a recording medium in a conventional disk drive will be described. In addition, the direction of arrow A-A' in the figure (horizontal)
is the direction of sending and returning, and the direction of arrow B-E' in the figure is the up-down direction (vertical direction).

As shown in FIG. 6, the tray 22 has an upper surface in which a groove 22& is formed, and side surfaces extending downward from both sides of the upper surface, and two S-shaped elongated holes 40a on each side surface of the tray. 40b is formed. The S-shaped slot consists of an upper horizontal portion, a lower horizontal portion, and a diagonal portion connecting these two horizontal portions. Slide members 42m and 42b are arranged inside each side surface of the tray 22 so as to overlap the side surfaces. On the outer surface of each slide member, there are 40 m long S-shaped holes on the side surface of the tray.
Two bins 44a are engaged with 0b.

44b is provided in a protruding manner. In addition, the slide member 4
2m, 42b has a straight line f extending in the A-A' direction.
- Elongated holes 46m and 46b are formed. Further, each of the above-mentioned slotted holes 46a, , 46 are provided on the disk device main body side.
A pin 48 is provided in a protruding manner so as to be engaged with b. A slide locking member 50 is also formed on the disk device main body side on the same plane as each side of the tray. A rack 52 is formed inside each slide member 42a*42b along the A-A' direction, while a pinion 54 that meshes with the rack is formed on the device main body side.
A drive motor 56 with an attached drive motor 56 is fixedly installed.

When loading a recording medium, the recording medium cartridge 26 is placed in the groove 22m of the tray 22, and then the system slide member 42a is driven by the motor 56't.
42b and the tray 22 are moved in the direction A. Then, the tray 22 is attached to a stopper 52 fixed to the apparatus main body side.
Even after colliding with the slide members 42m and 42bt-A
By moving the pins 44m, 44b provided on the slide member in the direction of , the pins 44m, 44b provided on the slide member slide from the lower horizontal portion to the upper horizontal portion in the S-shaped elongated holes 40m, 40b provided on the side surface of the tray 22, and this As a result, the tray 22 moves in the direction B. Thus, the situation shown in FIG. 7 is achieved. Although the recording medium cartridge is not shown in FIG. 7, it is clamped and held in this state as explained in connection with FIGS. 8 and 9 above.

When loading a recording medium, first, from the state shown in FIGS. 8 and 9, the motors 30 and 31 are driven to move the clamp member 20 upward and release the clamp. next,
By driving the motor 56 from the state shown in FIG. 7, the slide members 42m, 42b and the tray 22 are
’. At this time, since the side surface of the tray 22 is initially restricted from moving in the direction A' by the slope 501 of the slide locking member 50, the slide member 42a.

As the slide member 42b moves, the bins 44m and 44b provided on the slide member slide from the upper horizontal portion to the lower horizontal portion in the S-shaped long 40m and 40b provided on the side surface of the tray 22, and thereby the tray 22 moves in the direction B', thus the tray side surface slides on the slope 50a'i of the slide locking member, and after rising to a height where the centering by the slope is released, the tray 22 moves in the direction A' together with the slide member. Moving. Thus, the state shown in FIG. 6 is reached.

[Problem to be Solved by the Invention 1] As explained above, in the recording medium loading mechanism of a conventional disk device, the feeding and returning of the recording medium to the device main body and the clamping of the recording medium are driven by separate drive sources. In addition, a plurality of drive sources are used for each of the feeding and returning of the recording medium and the clamping. In such a loading mechanism, it is necessary to drive each driving source in synchronization, which makes the control complicated, and furthermore, the mechanism itself becomes complicated and large.

[Means for solving problems]

According to the present invention, in order to solve the problems of the prior art as described above, the clamp member is moved based on the movement of the slide member, which is a driving force transmission means for moving the tray. , a loading mechanism for a disk device is provided.

〔Example〕

Hereinafter, specific embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a partially cutaway exploded perspective view showing the loading mechanism of the present invention.

In the figure, 62 is a motor that is the drive source of the rope ink mechanism of this embodiment. The motor 62 is attached to the main body of the disk device, and a gear 64 is fixed to its rotating shaft. Further, a rotating shaft 66 is attached to the main body of the disk device in parallel with the motor rotating shaft. The rotating shaft 66
A gear 68 is fixed to the motor, and the gear 68 meshes with a gear 64 fixed to the motor rotating shaft. Derivatives Qa and 70b are fixed to both ends of the rotating shaft 660, and boots U72m and 72b (not shown) are provided on the disk device main body side corresponding to these pulleys. A bell) 74m is wound between the pulleys 70m and 721, and a bell) 74b is similarly wound between the pulleys 70b and 72b. The belt is indicated by arrow A-A
' They are arranged in parallel along the force direction, and each belt has a holding member 76 a e 76 b at the upper running portion.
is permanently installed. Each of the holding members is marked with an arrow A-
An idle hole is provided extending in the direction of force A', and idle rails 78m and 78b are passed through the guide holes, respectively, extending in the direction of force indicated by arrows A-A'. In the figure, 80 is a sliding member, and both sides of the sliding member are connected to the holding members 76a and 76bK,
It can move integrally with the holding member. Slide member 800
Pins 82& (not shown), 82b (not shown), 82c (not shown), and 82d are protruded from the inside of both sides. Furthermore, a tray 84 for accommodating a disk-shaped recording medium is arranged on the lower inner side of the slide member 80. The tray is approximately box-shaped, and the slide member 80
Slide members 8 are provided on two sides opposite to the two sides of the
S-shaped elongated holes 86a (not shown) that are respectively engaged with the pins 821 to 82d provided at 0;
86b.

86c (not shown) and 86d are formed. The engagement relationship between the slide member and the tray is essentially the same as that described in connection with FIGS. 6 and 7 for the conventional mechanism described above. The upper and lower surfaces of the toy 1/84 are respectively formed with an opening through which the clamp member and the external magnetic field generating means pass, and an opening through which the turntable passes.

On the other hand, an opening is formed in the upper surface of the slide member 80 for passage of a clamp member and the like.

Side plates 88a and 88b extending upward are formed on two opposing sides of the opening along the A-A' force direction. Pins 90a (not shown), 90
b (not shown), 90c, and 90d are provided in a protruding manner.

Further, in the figure, reference numeral 92 denotes a mounting body for the clamp member, which is shaped like a box. A clamp member 94 is attached to the lower surface of the mounting body. The two side surfaces of the mounting body are provided with S-shaped elongated holes 96m, 96b, and 96c (not shown) that are engaged with pins 90a to 90d provided on the side plates 88a and 88b, respectively. ), 96d are formed. The engagement relationship between the slide member and the mounting body is essentially the same as the engagement relationship between the slide member and the tray described above. Further, an external auxiliary magnetic field generating means 98 is fixed to the lower side of the upper surface of the mounting body 92. Also, there is a stone/4-1 for the tray on the main body side of the device.
00m+100b is fixed.

In FIG. 1, 6 is a turntable similar to that in a conventional disk device, 24 is a disk-shaped recording medium, and 26 is a cartridge containing the medium.

In the present embodiment, when the recording medium trigger 26 is inserted into the tray 84 in the direction A and the motor 62t is rotated, the gears 64, 68. Rotation axis 66, gooliff 0
&, 70b, 72a, 72b rotate, bell) 74a
, 74b are running. As a result, the holding member 76 a e
76b moves in the direction of A along the idle rails 78a and 78b. As the holding member moves, the slide member 80 is moved in the direction A together with the tray 84 and the mounting body 92. Then, at a position where the recording medium 24 reaches directly above the turntable 6, the leading end of the tray 84 in the input direction reaches the stop horn 9100a.

collides with 100b. Even after that, the slide member 800
The movement in the direction continues, whereby the pins 82a to 82d provided on the slide member slide from the lower horizontal portion to the upper horizontal portion in the S-shaped elongated portions 86a to 86d provided on the side of the tray, Thus, the tray 84 moves in the direction B.

FIG. 2 is a partial schematic diagram showing the relationship between the tray and the stone Al − in this state. As shown in Figure 2,
A downward hook 85 is attached to the tip of the tray 84, while a stopper 100a (and xoob)
An upward hook 101 corresponding to the hook 85 is attached to the.

Then, when the pin 82a is located at the upper horizontal part of the S-shaped elongated hole 86m, the seven hooks 85 and 101 are completely engaged, and the engagement height h is the S-shaped elongated hole 861 (
and 86b, 86c, 86d).

Although not shown, the tray 84 is also connected to the mounting body 92.
A similar strut arm is fixedly attached to the main body of the device, and a similar hook engagement mechanism is also provided.

Therefore, the mounting body 92 also moves in the same direction as the tray 84, and this causes the shift! The recording medium 24 is clamped onto the turntable 6 by the member 94.

FIGS. 3 and 4 are schematic partial cross-sectional views showing the mutual relationships of the slide member 80, tray 84, and mounting body 92 during movement in this embodiment as described above. In these drawings, only 82b is shown as a representative of the pins 82a to 82d17) provided on the slide member 80, only 86b is shown as a representative of the S-shaped elongated holes 86a to 86d provided on the tray 84, and side plate 88
a.

9 as a representative of pins 90a to 90d provided in 88b.
Only 0b is shown, and the S-shaped elongated hole 9 provided in the mounting body 92
Only 96b is shown as a representative of 6a to 96d.

FIG. 3 shows a state in which the tray 84 and the mounting body 92 have not yet collided with their respective stop horns 4-. In this state, the pins 82b and 90b are connected to the S-shaped elongated hole 86, respectively.
b and in the lower horizontal portion of 96b. Therefore, the tray 84 and the mounting body 92 are located relatively above, and the tray 84 and the mounting body 92 are located relatively upwardly.
The lowermost surface of the clamp member 94 is located above the uppermost surface of the turntable 6, and the lowermost surface of the clamp member 94 is also located above the uppermost surface of the recording medium cartridge 26. Thus, in this state, the recording medium cartridge 26 can be inserted into the tray 84 in the direction A.

FIG. 4 shows the state after the tray 84 and the mounting body 92 have collided with the respective elbows of the stumps and the tray 84 and the mounting body 92 have moved downward. In this state, pin 82
b and 90b are present in the upper horizontal portions of the S-shaped elongated holes 86b and 96b, respectively. Further, the difference in height between the upper horizontal portion and the lower horizontal portion of the S-shaped elongated hole 86b is a predetermined length greater than the height difference H between the upper horizontal portion and the lower horizontal portion of the S-shaped elongated hole 96b. Since it is so small, the clamp member 94 presses the recording medium 24 from above at the same time as the recording medium 24 is placed on the turntable 6. Clamping is thus achieved.

Although the operation of loading the recording medium has been described above, the operation of loading and unloading the recording medium can be performed by rotating the motor 62 in the reverse direction. At this time, since the hooks 85 and 101 are initially engaged as shown in FIG. The tray 84 will not move in the direction A' unless it slides from the upper horizontal portion to the lower horizontal portion and rises by h. The same applies to the attachment body 92. In this way, an operation completely opposite to the mounting operation can be realized.

FIG. 5 is a schematic partial sectional view showing an embodiment of the recording medium clamp holding means in the loading mechanism of the present invention. In the figure, the same members as in FIG. 9 are denoted by the same reference numerals, and the explanation thereof will be omitted.

In this embodiment, the turntable 6 is made of a ferromagnetic material, and a ring-shaped permanent magnet 21 is fixed to the clamp member 20. In addition, the clamp member 20
is held on the lower surface of a mounting body 92 as shown in FIG. 1 above so as to be able to move vertically with an appropriate stroke. Note that 98 is an external auxiliary magnetic field generating means.

In this embodiment, the magnet 21 is used for the υ turntable 6t.
- Attractive force can be used as clamping force.

Although the above embodiments have been described with reference to the case where the recording medium is housed in the cartridge, the present invention is also applicable to the case where the recording medium is not housed in the cartridge.

〔Effect of the invention〕

According to the loading mechanism of the present invention as described above, since the same drive source can perform the feeding and return of the recording medium to the apparatus main body and the clamping of the recording medium, the control can be simplified.
Furthermore, the mechanism can be simplified and downsized.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway exploded perspective view of the mechanism of the present invention, and FIG. 2 is a partial schematic view thereof. 3 and 4 are partial cross-sectional views of the mechanism of the present invention. FIG. 5 is a partial sectional view of the clamp holding means in the mechanism of the present invention. 6 and 7 are partially cutaway perspective views of a conventional loading mechanism. FIG. 8 is a perspective view of the vicinity of the clamp holding means in a conventional loading mechanism, and FIG. 9 is a sectional view taken along line IX-IK in FIG.

Claims (1)

[Claims] (1) A disc-shaped recording medium is placed on a tray and fed to a predetermined position, and the recording medium is clamped and held on a turntable by a clamp member and driven to rotate, Information can be recorded on the recording medium, information recorded on the recording medium can be reproduced, and/or information recorded on the recording medium can be erased, and after the clamp holding is released, the recording medium In a loading mechanism of a disk device that can place a disc on a tray and return it from the predetermined position, the clamp member is moved based on the movement of a slide member that is a driving force transmission means for moving the tray. A loading mechanism for a disk device, characterized by: (2) The loading mechanism for a disk device according to claim 1, wherein the tray and the clamp member are movable in the sliding direction of the sliding member and in a direction perpendicular to the sliding direction. (3) The loading mechanism for a disk device according to claim 2, wherein the amount of movement of the clamp member in the direction perpendicular to the sliding direction of the sliding member is greater than the amount of movement of the tray in the direction perpendicular to the sliding direction of the sliding member. (4) The loading mechanism for a disk device according to claim 1, wherein the means for applying an external auxiliary magnetic field to the recording medium is fixed relative to the clamp member.