JP2003346407A - Disk drive - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent a transport means from being accidentally returned toward a transport force transmission position due to vibration or the like when the transport means is located at a transport force shut position. <P>SOLUTION: A projection 90a is formed on a moving arm 90 supporting a transport roller 24 disposed at a depth of a disk drive and a press contact section 94 and a restriction section 95 are provided in a stationary base 2A for supporting a first moving member 6. When the moving member 6 is located in a direction X2 and a transport means 20 is toward the transport force transmission position, the moving arm 90 is turned counter clockwise and the transport roller 24 is projected in the direction X2. When the moving member 6 is moved in a direction X1, the press contact section 94 provided in the stationary base 2A turns the moving arm 90 clockwise resulting in restricting the projection 90a by the restriction section 95 to thereby prevent the moving arm 90 from being turned counter clockwise. At that time, an energizing force of an elastic energizing member 91 is not exerted on the first moving member 6 in the direction X2 as a restoration force thereby permitting the transport means 20 to be stably located at a position apart from a disk. <P>COPYRIGHT: (C)2004,JPO

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk drive provided with a transfer means for transferring a disk to a drive position by applying a transfer force to an edge of the disk. The present invention relates to a disk device capable of reliably retreating the transfer means to a position where the transfer means does not hit a disk.

[0002]

2. Description of the Related Art A disk device for a vehicle is provided with a guide member for holding both side edges of the disk and a conveying means, so that one edge of the disk is inserted when the disk is inserted from an insertion slot. In some cases, the disk is guided by the guide member, and the other edge of the disk is transported by receiving the transport force from the transport means.

FIGS. 11 and 12 are plan views each showing only the transfer means of a conventional disk drive. The transport means provided in the disk device 100 includes a moving member 1
The transport rollers 101, 102, 103, and 104 are rotatably supported by the moving member 110 along the transport direction (Y1-Y2 direction) of the disk. Transmission gears 105, 106, and 107 are provided between the transport rollers 101 and 102, between the transport rollers 102 and 103, and between the transport rollers 103 and 104, respectively, and are integrated with the transport rollers. Meshes with rotating gears. When the transmission gears 105, 106, and 107 are respectively rotated by the rotational force of the motor M,
Each of the transport rollers 101, 102, 103, and 104 is synchronously rotated in the same direction to apply a transport force to the edge of the disk.

A movable arm 111 is rotatably supported on a shaft 107 a of the transmission gear 107, and the transport roller 104 is supported at the tip of the movable arm 111. Further, a coil spring 112 is hung between the movable arm 111 and the moving member 110, and the movable arm 111
Are always biased counterclockwise. Movable arm 111
Is connected to one end of a connecting member 113 having a shape shown by hatching, and the other end of the connecting member 113 is connected to a cam 117 formed in a fan shape. The cam 117 is rotatably supported by a shaft 106a of the transmission gear 106, and a projection 118 is integrally formed on an arc of the cam 117.

An attitude control member 119 having a shape indicated by a hatched portion is supported by the movable member 110 so as to be movable in the X1-X2 directions. The tip of the attitude control member 119 on the X1 side protrudes from the moving member 110, and
10 is opposed to a regulating piece 120 formed on a base that supports 10. Further, the posture control member 119 and the moving member 11
0, a coil spring 121 is hung, and the elastic force of the coil spring 121 causes the posture control member 11 to move.
9 is urged so that it always projects from the side of the moving member 110.

FIG. 11 shows a state in which the transport means is set at a position where the disk can be transported. In this state, a conveying force is applied to the edge of the disk from each of the conveying rollers, and the disk is transferred to a predetermined driving position and installed. At this time, since the movable arm 111 is urged to rotate in the counterclockwise direction, the transport roller 104 can reliably hold the edge of the disk.

After the disk is set at the driving position, the moving member 110 is moved in the X1 direction by the power of the motor M provided on the base, and each transport roller is retracted to a position where it does not hit the edge of the disk. Let me do. Due to the moving force at this time, the tip of the posture control member 119 comes into contact with the regulating piece 120 and is moved on the moving member 110 in the X2 direction. Therefore, the protrusion 118 is rotated clockwise, and the cam 117 is rotated clockwise. The connecting member 113 is moved in the Y1 direction by the rotational force of the cam 117,
1 is turned clockwise. By this rotation, the transport roller 104 is retracted further away from the disk.

[0008]

However, FIG. 11 and FIG.
12, the attitude control member 119 always projects in the X1 direction due to the elastic return force of the coil springs 112 and 121 when the transport means moves to a position away from the edge of the disk as shown in FIG. Is being biased. Therefore, as shown in FIG.
When the control piece 9 and the restricting piece 120 are in contact with each other, a force for returning the moving member 110 in the X2 direction continues to act on the moving member 110 due to the reaction force of the elastic return force.

When the motor M is energized,
Since a load for the electromagnetic force with the drive coil of the motor is acting on the rotor in the motor M, the moving member 110 is less likely to move in the X2 direction due to the elastic return force.

However, for example, when switching to the radio reception mode or the like and the power supply to the motor M of the disk device is cut off, the rotor load of the motor M is eliminated. When a vibration or an external impact is applied, the moving member 110 may return in the X2 direction due to the elastic return force.
At this time, since the movable arm 111 rotates counterclockwise, the transport roller 10 provided on the movable arm 111 is rotated.
4 may hit the edge of the disk being driven.
In addition, the moving member 110 rattles due to vibration or external impact during traveling, or the movable arm 111 rattles, and mechanical noise is generated.

Further, in the disk drive of a disk selection type in which a plurality of disks are stored, the power for rotating the transport roller of the transport means and the power of the selection means for selecting the disk are shared by a common motor. And when the moving member 110 reaches the X1 side, the power of the motor is switched to be transmitted to the selecting means. In such a disk device, if the moving member 110 is inadvertently moved in the X2 direction,
There is a danger that the power will not be reliably transmitted from the motor to the selection means, and the selection operation of the disk will stop.

The present invention has been made to solve the above-mentioned conventional problems. When the transport means is separated from the edge of the disk at the driving position, the transport means is securely held at the separated position. It is another object of the present invention to provide a disk device which can prevent the position from being carelessly moved.

According to the present invention, when the conveying means and the disc selecting means are driven by a common motor,
It is an object of the present invention to provide a disk device capable of stabilizing switching of power from the motor.

[0014]

SUMMARY OF THE INVENTION According to the present invention, there is provided a transfer means for transferring a disk to a driving position by applying a transfer force to an edge portion of the disk, a moving member for supporting the transfer means, Setting means for moving the moving member in a first direction when installed at a position to separate the transfer means from an edge of the disk. A rotatable movable arm for moving at least a part of the means between a resilient position for pressing the disk and a retracted position away from the disk; and a biasing device for biasing the movable arm toward the resilient position. Means are provided, and the base supporting the moving member, when the moving member moves in the first direction, strikes a part of the movable arm to move the moving member. Accordingly, a contact portion for rotating the movable arm toward the evacuation position, and regulation for holding a part of the movable arm rotated to the evacuation position and preventing the movable arm from returning to the resilient position. And a unit are provided.

Preferably, when the movable arm is rotated to the retracted position, the part of the movable arm is resiliently pressed against the restricting portion in a direction intersecting the moving direction of the moving member. Accordingly, the urging force of the movable arm to return to the resilient posture does not act as a force to return the moving member to a second direction opposite to the first direction.

According to the present invention, when the moving member moves in the first direction and the transfer means moves away from the disk set at the driving position, the movable arm is rotated by the moving force of the moving member, and the transfer means is moved. Is moved to the retracted posture. In this state, the movable arm is restrained by the base so as not to return to the resilient posture.

Therefore, the movable member is not substantially moved in the second direction due to the elastic reaction force of the urging member for urging the movable arm to the resilient posture, and the energization of the motor of the setting means is not performed. In the case where the moving member is refused, it is possible to prevent the moving member from rattling or returning to the second direction unnecessarily.

[0018] For example, a pair of the moving members whose opposing intervals are changed by the setting means are provided, one of the moving members is provided with the conveying means, and the other moving member is opposed to the conveying means. It can be configured such that a guide member for guiding the edge of the disk is provided.

Alternatively, a conveying means may be provided for each of the pair of moving members. Further, according to the present invention, the disk holding portion on which the disk is installed is moved to a stock portion where the disk is stacked in the thickness direction of the disk, and to a position where any one of the disk holding portions in the stock portion can be transferred by the transfer means. Disk selecting means for causing the power of a motor to be transmitted to the transport means when the moving member is located in the second direction, and when the moving member moves in the first direction, Switching means for transmitting the power of the motor to the disk selection means may be provided.

In this case, since the moving member does not inadvertently move at the position where the moving member has moved in the first direction, when the transport means is away from the disk, the power is transmitted between the motor and the disk selecting means. Can be prevented from being cut off.

[0021]

FIG. 1 is a perspective view showing the internal structure of a disk drive according to the present invention, FIG. 2 is a plan view of FIG. 1, and FIG.
FIG. 4 is a sectional view taken along line III-III of FIG. 4, and FIGS. 4 and 5 are partial plan views when the transport means is at the transport force transmitting position and at the transport force blocking position, respectively. 7 to 10 are explanatory views showing the switching mechanism.

The disk device 1 shown in FIG. 1 and FIG.
8cm diameter disc (small diameter disc) or 12cm diameter
With a cm (large-diameter disk), reproduction and recording of, for example, a CD (compact disk) or a DVD (digital versatile disk) are possible. A plurality of disks having a diameter of 12 cm can be stocked in the disk device.

A nose portion (not shown) having a liquid crystal display panel and various switches is provided on the front of the apparatus main body, and a slit-like insertion port extending in the width direction is provided in the nose portion. I have. A stock portion 3 on which a plurality of large-diameter discs can be stacked in the height direction is provided at the back portion on the Y1 side of the disc device 1, and the large-diameter disc is a disc holding portion provided on the stock portion 3. The sheets 41 are held one by one and stored in a state of being stacked in the height direction.

As shown in FIGS. 1 and 2, a disk transport mechanism 5 for loading and unloading a disk is provided between the insertion port provided in the nose portion and the stock portion 3. On the base 2, a first moving member 6 and a second moving member 7 are provided so as to be movable in the width direction (X1-X2 direction). A rack 6a is formed on the first moving member 6, and a rack (not shown) facing the rack 6a is provided on the second moving member 7. On the base 2, a connecting gear 8 rotated by a setting motor M is provided as setting means for setting an interval, and the connecting gear 8 is connected to the rack 6 of the first moving member 6.
a and the rack of the second moving member 7 are engaged with each other. When the connection gear 8 is rotated by the setting motor M, the first moving member 6 and the second moving member 7 move in a direction approaching and moving away from each other in synchronization.

The second moving member 7 is provided with a guide member 11 extending in the Y1-Y2 direction as shown in the drawing and ejecting direction of the disk. On the surface on the opposite side (X1 side in the figure) of the guide member 11, a long groove for guide extending in the Y direction in the figure is formed. As shown in FIG. 3, the cross-sectional shape of this long groove is a V-shape in which the opening end side on the X1 side is wide and the X2 side is narrow.

At the end of the guide member 11 on the discharge side (Y2 side), a detection arm 12 is provided. The detection arm 12 is supported so as to be able to rotate clockwise and counterclockwise in FIG. 2 around the shaft 13 and is urged in a counterclockwise direction by an urging member (not shown).

The detecting arm 12 is formed by bending a detecting piece 12a located at an end of the guide member 11 on the discharge side. Due to the outer peripheral edge of the disk D moving in the long groove 11a of the guide member 11, the detecting piece 12a is moved outward (X
(2 directions), the detection arm 12 rotates clockwise.

At the other end of the detection arm 12, a pressing piece 12 b bent downward in the drawing is formed, and this pressing piece 12 b faces the actuator of the insertion detection switch 14. Then, when the detection arm 12 is rotated clockwise, the insertion detection switch 14 is turned on by the pressing piece 12b.

The detecting arm 12 is rotated in the counterclockwise direction, and the detecting piece 12a is turned into the long groove 11a of the guide member 11.
Is covered on the discharge side (Y2 side) end of
The pressing piece 12b moves away from the actuator of the insertion detection switch 14, and the insertion detection switch 14 is switched to the OFF state.

On the surface of the first moving member 6, there is provided a transport means 20 comprising first to fourth transport rollers 21, 22, 23, 24 arranged in the direction of insertion of the disk D (Y direction).
Are provided facing the guide member 11. The first to fourth transport rollers 21, 22, 23, and 24 are formed with flanges whose thickness gradually decreases from the center to the outer peripheral side in the vertical direction. It is held in the V groove between them.

In this embodiment, the guide member 11 and the conveying means 20 face each other in the direction of the surface of the disk, and each of them constitutes a pair of holding members for holding the peripheral portion of the disk from both sides. I have.

In the disk drive 1, a drive motor M1 is provided.
It is provided at a position different from the setting motor M. The power of the drive motor M1 is reduced by a reduction gear group, and is transmitted to each of the transport rollers 2 via transmission gears 25, 26, 27.
The first, second, third, and fourth transport rollers 21, 22, 23, and 24 are all rotated in the same direction. When the first to fourth transport rollers 21, 22, 23, 24 rotate clockwise,
When the disk D is carried in the inner direction of the apparatus (Y1 direction) and rotates counterclockwise, the disk D is moved outward (Y1 direction).
(2 directions). At this time, the disc is transported so as to roll in the long groove 11a of the guide member 11.

As shown in FIG. 4, the first moving member 6
Is provided with a turning arm 28 which can turn around a shaft 25a of the transmission gear 25 in a fixed angle range.
The first transport roller 21 is supported at the tip of the rotating arm 28. As shown in FIG. 4, a hook portion 28 b is formed on the rotation arm 28 between the shaft 25 a and the shaft of the first transport roller 21.
b, one end of an urging member 9 such as a tension coil spring is hung, and the other end of the urging member 9 is connected to the first moving member 6.
The rotating arm 28 is constantly urged in the clockwise direction.

On the first moving member 6, there is provided an insertion detecting switch 29 which is turned on when the rotating arm 28 has rotated a predetermined angle in the counterclockwise direction. A turning piece 28a for switching the insertion detection switch 29 is formed integrally with the turning arm 28 so as to protrude. When the rotation arm 28 rotates counterclockwise, the insertion detection switch 29 is turned to O by the rotation piece 28a.
N.

Although not shown, the base 2 is provided with a linear position sensor for detecting the position of the second moving member 7 in the X direction. The linear position sensor is, for example, a linear variable resistor.
Can be detected, and as a result, the facing distance Wx between the guide member 11 and the conveying means 20 can be detected.

As shown in FIG. 4, the first moving member 6
Is provided with a movable arm 90 rotatable around a shaft 27a of the transmission gear 27 in a fixed angle range.
At the tip of the movable arm 90, the fourth transport roller 2
4 is rotatably supported. The movable arm 90 has one end of an elastic biasing member 91 formed by a tension coil spring or the like hooked on a latching piece 27b formed at the edge on the X2 side, and the other end of the elastic biasing member 91 The movable arm 90 is constantly urged in the counterclockwise direction by being hooked on the hook 6b formed on the first moving member 6.

The movable arm 90 is integrally formed with a projection 90a on the opposite side to the fourth transport roller 24 with the shaft 27a interposed therebetween. This protruding portion 90 a
Is bent to the back side (Z2 side) of the drawing and protrudes from the first moving member 6 in the Z2 direction. The first moving member 6 has a fan-shaped opening 6d formed around the shaft 27a, and the projection 90a is inserted into the opening 6d. When the movable arm 90 is rotated counterclockwise in FIG. 4 by the elastic urging member 91, the protrusion 90a abuts on the X1 side end of the opening 6d, and the rotating operation of the movable arm 90 is performed. Be regulated.

On the other hand, an attitude control section 92 is provided at an end on the X1 side of the fixed base 2A constituting a part of the base 2. The attitude control unit 92 is provided with the fixed base 2
A is provided integrally with A, and has a cutout portion 93 that opens toward the X2 side.

As shown in FIGS. 4 and 6, the notch 93 is a guide for guiding the projection 90a linearly in the X1 direction when the first moving member 6 moves in the X1 direction. 93a. At the end of the guide portion 93a on the X1 side, a contact portion 94 directed in the X2 direction is formed. The notch portion 93 further extends toward the X1 side than the contact portion 94 to form a holding groove 93b, and the edge of the holding groove 93b is perpendicular to the contact portion 94 and X1-
The restricting portion 95 extends in the X2 direction.

When the first moving member 6 moves in the X1 direction from the conveying force transmitting position shown in FIG. 4, the projection 90a integrally provided on the movable arm 90 hits the contact portion 94, and the subsequent contact portion 94a By the moving force of the first moving member 6 in the X1 direction, the protruding portion 90a is pushed by the contact portion 94, and the movable arm 90 moves on the first moving member 6 clockwise in FIG. (Clockwise).

Then, the first moving member 6 is moved to the position X shown in FIG.
When reaching the end of movement in one direction, that is, the transport force blocking position,
The protrusion 90a is disengaged from the contact portion 94 and enters the holding groove 93b, and the protrusion 90a of the movable arm 90 receiving the urging force of the elastic urging member 91 is pressed by the regulating portion 95. You. As shown in FIG.
Extends in the X direction, which is the direction of movement of the first moving member 6, the elastic pressing force F1 applied to the restricting portion 95 from the protrusion 90a is directed in the Y2 direction orthogonal to the X direction. Therefore, the protrusion 90a is not
In this state, the movable arm 90 is held so as not to return in the counterclockwise direction in FIG. 5 (clockwise in FIG. 6). Further, since the elastic pressing force F1 applied to the first moving member 6 from the movable arm 90 acts in a direction orthogonal to the moving direction of the first moving member 6, the first moving force F1 is applied by the elastic pressing force F1. No return force acts on the member 6 in the X2 direction.

The stock portion 3 holds the outer peripheral edge of the large-diameter disc having a diameter of 12 cm, which is clamped and carried by the guide member 11 and the conveying means 20 constituting a pair of clamping members, on the back side of the apparatus. A disk holding unit 41 is provided. A plurality (six in the illustrated embodiment) of the disk holders 41 are provided in the thickness direction of the disk, and are vertically stacked.

On the base 2, a plurality of guide posts 4
2 are installed vertically and rotatably supported. Small gears 43 are fixed to the base ends of all the guide columns 42, and a ring gear 44 that meshes with all the small gears 43 is provided on the base 2. The ring gear 4
4 is driven by the drive motor M1, and all the guide columns 42 are driven to rotate synchronously.

A screw groove 42a is formed on the outer periphery of all the guide columns 42. This screw groove 42a
The pitch is dense at the upper and lower portions of the guide column 42, and the pitch is sparse at the intermediate portion. The disk holding portion 41 has a screw groove 42 of the guide post 42.
A projection 41a that meshes with a is provided. When the guide column 42 rotates, each disk holding part 41 is moved up and down by the screw groove 42a.

As described above, the pitch of the screw groove 42a is dense at the upper part and the lower part of the guide post 42,
The disk holding part 41 is stocked so that the upper part and the lower part closely overlap. In addition, the screw groove 42a is
Because the pitch is sparse in the middle part of
In the middle part of 2, the disk holding part 41 can move up and down apart from the disk holder adjacent vertically.
One of the disk holders 41 is selected by the upward and downward movement of the disk holder 41, and as shown in FIG.
1 and to the selected position 41A at the same height as the conveying means 20 and stops.

In this embodiment, the guide columns 42,
The small gear 43 and the ring gear 44 constitute a disk selecting means for selecting the disk holding unit 41. In the present embodiment, on the base 2,
A switching mechanism 70 for switching the power of the drive motor M1 between the power for driving the transporting means 20 and the power for selecting the disk holding unit 41 is provided.

This switching mechanism 70 is shown in FIGS.
0 will be described. As shown in FIG. 7, a worm gear 31 is provided on an output shaft of the drive motor M1, and a two-stage gear 32 driven by the worm gear 31 is rotatably supported on the base 2 by a support shaft 32c. . The two-stage gear 32 is formed by integrally forming a large-diameter gear 32a and a small-diameter gear 32b. The large-diameter gear 32a is a worm wheel, and the drive motor M
The first worm gear 31 meshes with the first worm gear 31.

Near the two-stage gear 32, a two-stage gear 4
5 are provided. The two-stage gear 45 is rotatably supported by a shaft 45c fixed to the base 2, and a large-diameter gear 45a and a small-diameter gear 45b are integrally formed. The large-diameter gear 45a meshes with the ring gear 44.

An idle gear 33 is provided between the second gear 32 and the second gear 45. The idle gear 33 includes a sliding shaft 34 fixed to the base 2.
And is slidably supported in the axial direction of the sliding shaft 34. The small-diameter gear 3 of the two-stage gear 32
2b is formed to have a long axial dimension, and the idle gear 33 and the small-diameter gear 32b are always meshed while the idle gear 33 slides up and down the sliding shaft 34 in the axial direction.

As shown in FIG. 8, the fixed base 2A is fixed to the base 2 at an interval by screws or the like. As shown in FIGS. 1 and 2 and FIGS. 4 to 6, the first moving member 6 is located above the fixed base 2A, and the second moving member 7 is located below the fixed base 2A. And supported so as to be movable in the X1-X2 directions.

A transmission gear 3 is provided on the lower surface of the fixed base 2A.
8 is rotatably supported by a shaft 38a. The shaft 45c supporting the two-stage gear 45 and the shaft 38a are located on the same axis. Further, the small-diameter gear 45b of the two-stage gear 45 and the transmission gear 38 have the same pitch circle diameter and the same tooth module.

As shown in FIGS. 1 and 2, a driving pulley 81a is rotatably supported on the upper surface of the fixed base 2A, and pinch rollers 81b and 81c are rotatably provided on both sides of the driving pulley 81a. Supported. The torque of the transmission gear 38 is applied to the drive pulley 81a via a power transmission unit such as a gear train or a toothed belt provided on the lower surface of the fixed base 2A. Pulleys 82 and 83 are rotatably supported on the first moving member 6. A gear 84 is provided integrally with one pulley 82, and the gear 84 meshes with the transmission gear 25 of the conveying means 20.

The drive pulley 81a and the pulleys 82 and 83 are toothed pulleys, and a toothed belt 85 is hung between each pulley. As shown in FIG. 2, the toothed belt 85 passes through a space from a pulley 82, is pinched between a pinch roller 81b and a driving pulley 81a, is wound around the Y1 side outer periphery of the driving pulley 81a, and
1a and a pinch roller 81c, and is wound around a pulley 83 through a space. And it is wound around one round from the pulley 83 to the pulley 82 through the space.

For this reason, the first moving member 6 moves on the fixed base 2A. Regardless of the position, the first moving member 6 always moves from the transmission gear 38 via the driving pulley 81a and the toothed belt 85 via the toothed belt 85. Power can be transmitted to the pulley 82. Then, each of the transport rollers 2 of the transport unit 20 is moved from the gear 84 to
Power can be transmitted to 1, 22, 23, and 24.

In FIG. 8, the idle gear 33 has a sliding shaft 34.
Along with the transmission gear 38. At this time, the power of the drive motor M1 is transmitted from the worm gear 31 to the idle gear 33 via the two-stage gear 32, and further transmitted to the transmission gear 38, so that each transport roller of the transport means 20 is driven. Also idle gear 3
When 3 moves down along the sliding shaft 34, the idle gear 33 meshes with the small-diameter gear 45 b of the two-stage gear 45. At this time, the power of the drive motor M1 is transmitted from the worm gear 31 to the idle gear 33 via the two-stage gear 32,
The power is further transmitted to the second gear 45. And two-stage gear 4
Power is transmitted from the large diameter gear 45a of No. 5 to the ring gear 44 of the disk selecting means.

The position of the idle gear 33 in the Z direction is controlled by the control member 60. As shown in FIG. 10, the control member 60 has a rotating body 61 having a cylindrical shape.
A shaft hole 62 is formed through the rotating body 61. On the other hand, as shown in FIG. 9 (a bottom view seen from the back side of FIG. 7),
A shaft 37 is fixed to the base 2, the shaft hole 62 is inserted through the shaft 37, and the rotating body 61 is rotatably supported on the base 2.

As shown in FIG. 10, a spiral groove 61a is formed on the outer peripheral surface of the rotating body 61, and a partial gear 63 is formed on the rotating body 61 as shown in FIG. ing. A flange 64 is formed integrally with the upper portion of the rotating body 61 on the Z1 side, and a hole 65 is formed in the flange 64.

On the other hand, a cylindrical attitude switching projection 66 is formed at the lower portion of the rotating body 61 on the Z2 side. As shown in FIG. 9, the posture switching protrusion 66 is formed in a columnar shape and is eccentric with respect to the shaft hole 62, and
Has a large diameter portion 66a having a long radius from the center and a small diameter portion 66b having a short radius from the center.

The switching mechanism 70 is provided with a switching member 71 as switching means for distributing power transmission. The switching member 71 has a cylindrical shape, and an engagement protrusion (not shown) is formed inside the cylindrical portion.
The switching member 71 is extrapolated to the rotating body 61,
The engaging projection is engaged with the spiral groove 61 a on the outer periphery of the rotating body 61.

The switching member 71 includes an arm 7
2 is formed extending toward the sliding shaft 34. The idle gear 33 is integrally formed with a support 33a extending toward the Z2 side.
It is connected to 2. Thus, when the arm 72 operates in the Z direction, the idle gear 3
3 is also operable in the Z direction.

When the rotating body 61 is rotating in the counterclockwise direction, the switching member 71 is lifted by the spiral groove 61a formed in the rotating body 61, and the idle gear 3 is rotated.
3 is set in a state of meshing with the transmission gear 38. When the rotating body 61 is rotated clockwise, the spiral groove 6 is rotated.
By 1a, the switching member 71 is lowered, and the idle gear 33 is set in a state of meshing with the small-diameter gear 45b of the two-stage gear 45.

The switching mechanism 70 is provided with a substantially triangular lock member 35 shown in FIG. The lock member 35 is rotatably supported on the base 2 with the support shaft 32c as a fulcrum. Lock member 3
5, a guide path 35b is formed.
Are guided by the sliding shaft 34. The lock member 35 is formed with a slot-shaped switching hole 35c, and the attitude switching projection 66 is inserted into the switching hole 35c. Further, an arm 36 extending toward the ring gear 44 is formed integrally with the lock member 35,
A lock claw 36a is formed on the arm 36 so as to face the large-diameter gear 45a of the two-stage gear 45.

In FIG. 7, when the rotating body 61 is rotating in the counterclockwise direction (clockwise direction in FIG. 9), the large-diameter portion 66a of the attitude switching projection 66 is positioned on the lock claw 36a side in the switching hole 35c. Lock claw 36
a rotates in a direction to fit into the tooth valley of the large diameter gear 45a of the two-stage gear 45. Therefore, the two-stage gear 45 is locked so as not to rotate, and the ring gear 4 of the disc selecting means is locked.
4 is also locked so as not to rotate. The rotating body 61
Is rotated clockwise (counterclockwise in FIG. 9), the small-diameter portion 66b of the attitude switching projection 66 is directed toward the lock claw 36a in the switching hole 35c, so that the lock claw 36a moves away from the large-diameter gear 45a. To unlock the two-stage gear 45.

As shown in FIG. 2, the first moving member 6
Is formed with a rack gear 16. The partial gear 63 of the rotating body 61 is set to mesh with the rack gear 16 at a predetermined position. The end of the torsion spring 80 is connected to the hole 65 and the support shaft 3 respectively.
2c, whereby the rotating body 61 of the control member 60 is rotated clockwise (counterclockwise in FIG. 9).
At both ends, that is, the turning end when turning to the left and the turning end when turning in the counterclockwise direction.

The conveying means 20 on the first moving member 6
However, when the rack gear 16 is moved to the transfer force transmitting position where the large-diameter disc with a diameter of 12 cm can be conveyed while being sandwiched, the rack gear 16 is located on the X2 side of the partial gear 63. At this time, the rotating body 61 of the control member 60 is rotated counterclockwise as shown in FIG. 7, and the state is stabilized by the torsion spring 80.

When the first moving member 6 moves in the X1 direction and the second moving member 7 moves in the X2 direction, the transfer means 20 provided on the first moving member 6 includes:
The distance Wx facing the guide member 11 provided on the second moving member 7 is wider than the diameter of the large-diameter disk D from the transfer force transmitting position, and the transfer means 20 and the guide member 11 are separated. When the transporting force blocking position where the large-diameter disk is not sandwiched is reached, the rack gear 16 meshes with the partial gear 63, and the rotating body 61 is rotated clockwise in FIG. 7 (counterclockwise in FIG. 9). Also at this time, the rotating body 61 is stabilized in that state by the torsion spring 80.

As described above, in the switching mechanism 70, when the opposing distance Wx between the guide member 11 and the transporting means 20 is at the transporting force transmitting position capable of transporting a large-diameter disk, the switching mechanism is shown in FIGS. As described above, the power of the drive motor M1 is transmitted to the transmission gears 25, 26, 27 of the transport means 20, and the transport rollers 21, 22, 23, 24 are driven. At this time, the ring gear 44 is locked so as not to rotate. Further, when the facing distance Wx is further widened from the conveying force transmitting position at which the large-diameter disk can be conveyed and is at the conveying force interrupting position, the driving motor M1
Is not transmitted to the respective transport rollers, and the lock of the ring gear 44 is released.

As shown in FIG. 2, a drive unit 50 is provided on the base 2. This drive unit 50
Has a drive chassis 51 and a clamp chassis 52, and the clamp chassis 52 is formed to extend from the X1 side to the X2 side. The drive chassis 51 and the clamp chassis 52 are combined in a parallel state, and the drive chassis 51 is located below the transport path of the disk D by the guide member 11 and the transport means 20, and the clamp chassis 52 is located above. are doing.

As shown in FIG. 3, a spindle motor 53 is provided in the drive chassis 51, and a turntable 54 that is driven to rotate by the spindle motor 53 is provided above the spindle motor 53. An optical head 55 is mounted on the drive chassis 51, and is supported so as to be movable in the X1-X2 direction. A clamper 56 is rotatably supported on the clamp chassis 52, and the clamper 56 is fixed to the turntable 5 by a leaf spring 57.
It is biased to the 4 side.

In FIG. 2, the state in which the drive unit 50 has moved to the drive position is indicated by a dashed line. The disc D inserted from the insertion slot is sent into the drive unit 50 stopped at the drive position shown in FIG. 2, and its center hole D1 fits into the turntable 54, and at this time, the clamper 56 Pressed by 57, the disc D is set at a driving position where it is clamped on the turntable 54.

Further, when the ring-shaped gear 44 is rotated to move the disk holding portion 41 of the stock portion 3 up and down to move any one of the disks to the selected position 41A, the driving operation is performed. Unit 50
Is retracted toward the insertion port side (Y2 side), and the disk that moves up and down together with the disk holding portion 41
Will not hit.

Next, the operation of the disk device 1 will be described. In a standby state waiting for the insertion of the disc D, the drive unit 50 is at the drive position shown in FIG. 2, and the facing distance Wx between the guide member 11 and the transporting means 20 is smaller than the diameter (8 cm) of the small-diameter disc. It is set as follows. When the disc is inserted in the Y1 direction from the insertion slot, one of the detection arm 12 and the rotating arm 28 is pushed outward, and when one of the insertion detection switches 14 and 29 is operated, the disc is inserted. It is determined that the operation has been performed, and the facing distance Wx is set to a size that allows a disk having a diameter of 8 cm to be loaded or a size that allows a large-diameter disk to be loaded.

At this time, each transport motor 2 of the transport means 20
1, 22, 23, 24, or before this point, the conveying motor starts, and the conveying force of the conveying rollers 21, 22, 23, 24 rotating clockwise causes the small-diameter disk or the large-diameter disk to move. Is transported in the Y1 direction while being held between the guide member 11 and the transporting means 20.

When the inserted disc is a small-diameter disc having a diameter of 8 cm, the facing distance Wx is 8 cm in diameter.
At this point, only one of the detection arm 12 and the rotating arm 28 is pushed outward, and only one of the two insertion detection switches 14 and 29 is in the detection state. Both insertion detection switches 14, 29
Are not detected at the same time. So in this case,
The facing distance Wx is maintained at a position for holding a small-diameter disc having a diameter of 8 cm.

On the other hand, the diameter 12
cm large-diameter disc, when the facing distance Wx is set to a size corresponding to a disc having a diameter of 8 cm,
The detection arm 12 and the rotation arm 28 are simultaneously pushed outward, and the two insertion detection switches 14 and 29 are detected together. Therefore, at this time, it is determined that the large-diameter disk has been inserted, and the first moving member 6 and the second moving member 7 rotate the connecting gear 8 clockwise by the driving force of the set motor M, and the respective moving members move. The members are moved left and right in synchronization. Then, the opposing distance Wx between the guide member 11 and the conveying means 20 is set to a conveying force transmitting position where the large diameter disc can be conveyed. The facing distance Wx is detected by the linear position sensor.

As shown in FIG. 2, the guide member 11 is provided with insertion detection switches 131 and 132, respectively.
The actuator of each of the insertion detection switches 131 and 132 appears in the long groove 11a of the guide member 11. Guide member 1
When both of the insertion detection switches 131 and 132 are turned on at the edge of the disk moving in the one long groove 11a,
It is detected that the disk has reached the drive position, and the operation shifts to a clamping operation for clamping the disk. That is, the drive chassis 51 shown in FIG. 3 is raised, the clamp chassis 52 is lowered, and the loaded disk is sandwiched between the turntable 54 and the clamper 56, and the disk is held by the elastic force of the leaf spring 57. Is done.

When the large-diameter disk or the small-diameter disk reaches the driving position and the clamping is completed, the setting motor M is driven so that the opposing distance Wx between the guide member 11 and the conveying means 20 is further increased to the conveying force blocking position. Can be spread. The transfer force blocking position is set between the guide member 11 and the transfer unit 2.
0 is the position where the opposing interval Wx is maximized.

When the first moving member 6 provided with the conveying means 20 moves in the X1 direction, the protrusion 90a of the movable arm 90 shown in FIGS. 4 to 6 is moved to the guide portion 93a formed on the fixed base 2A. The movable arm 90 is rotated clockwise in FIG. 4 by pressing the protrusion 90a by the contact portion 94 located at the inner end of the guide portion 93a. Then, as shown in FIG. 5, the first moving member 6
When it is moved to the final position on the X1 side where the conveyance force is interrupted,
As shown in FIG. 6, the protrusion 90a is provided in the holding groove 93b.
The movable arm 90 is held in this state at the retreat position where the transport roller 24 has largely moved to the X1 side.

At this time, as shown in FIG.
The urging force of 1 causes the protrusion 90a to apply a resilient force F1 to the restricting portion 95 in the Y2 direction, so that the elastic urging force of the elastic urging member 91 applies the first moving member 6 in the X2 direction. No return force is applied.

Therefore, for example, when the power supply to the set motor M is cut off and the load on the rotor in the motor M is reduced, when an external vibration or shock is applied. The first moving member 6 does not return in the X2 direction due to the urging force of the elastic urging member 91, and the first moving member 6 can be prevented from rattling in the X1-X2 direction.

The transport roller 24 provided on the movable arm 90 is stable at a position far away from the edge of the disk at the drive position as shown in FIG. The transport roller does not hit the edge of the disk being driven.

As described above, in the embodiment shown in FIG. 6, since the regulating portion 95 extends in the X direction, the elastic pressure F1 applied to the regulating portion 95 from the projection 90a is applied to the fixed base 2A. The first moving member 6 is prevented from acting on the first moving member 6 in the X2 direction. However, as an embodiment of the present invention, the regulating portion 95 is inclined counterclockwise with respect to the X direction so that the edge on the X2 side of the regulating portion 95 shown in FIG. You may be doing.

With such an inclination, when the projection 90a repels the restricting portion 95 by the urging force of the elastic urging member 91, the elastic pressure F1 is more counterclockwise than the Y2 direction. It works by tilting in the direction. Therefore, the first moving member 6 is further pressed in the X1 direction, that is, in the direction away from the disk by the reaction force, and the first moving member 6 is moved further away from the edge of the disk in the driving position when the first moving member 6 is further away from the edge of the disk in the driving position. The moving member 6 can be stabilized.

Since the second moving member 7 is synchronized with the first moving member 6, if the first moving member 6 is stabilized at the position moved to the X1 side as in each of the above-described embodiments, ,
The second moving member 7 is also stabilized at the position moved to the X2 side.
Therefore, the guide member 11 provided on the second moving member 7
Can be stabilized at a position far away from the edge of the disk.

Further, by the switching operation of the switching mechanism 70 shown in FIGS. 7 to 10, the first moving member 6 and the second moving member 7 approach each other, and the disc is moved by the conveying means 20 and the guide member 11. When being held, the drive motor M
One power is applied to each transport roller of the transport means 20 so that the disk can be transported.

When the first moving member 6 is moving to the end on the X1 side as shown in FIG. 5, the switching mechanism 70 is switched, and the power of the driving motor M1 is transferred to the conveying means 2.
0 is not transmitted to the ring gear 4 shown in FIG.
4, the disk selecting means can operate.

That is, when the drive motor M1 is operated in a state where the drive unit 50 is moved to the Y2 side in FIG. 2 and a disk is not set in the drive unit 50, the ring gear 44 is turned on. When driven, the disk holding unit 41 moves up and down, and one of the disk holding units 41 is moved to the selected position 41A.

During this operation, no elastic return force is applied to the first moving member 6 in the X2 direction, and the first moving member 6 is stabilized at the position shown in FIG. Therefore, it is possible to prevent the switching mechanism 70 from being erroneously switched when the disk selecting means is operating.

When one of the disk holding portions 41 is moved to the selected position 41A and stopped by the disk selecting means, the drive motor M1 is driven, and the first moving member 6 is moved in the X2 direction. Second moving member 7
Is moved in the X1 direction, and the disk D held by the disk holding unit 41 stopped at the selected position 41A is held by the guide member 11 and the transporting means 20.

At this time, with the movement of the first moving member 6 in the X2 direction, the protrusion 90
a comes out in the X2 direction from the notch 93 of the fixed base 2A. Therefore, the movable arm 90 is rotated counterclockwise by the urging force of the elastic urging member 91 as shown in FIG. In this state, the transport roller 24 has largely moved in the X2 direction.
The edge of the disk held by the transport roller 2
4, the elastic urging member 91 is securely held by the urging force of the elastic urging member 91.

At this time, in the switching mechanism 70, since the power of the drive motor M1 is applied to each of the transport rollers of the transport means 20, the rotational force of each of the transport rollers, particularly the transport force of the transport roller 24, is reduced. The disc is reliably given to the disc held in the disc holding section 41, and the disc is moved from the disc holding section 41 at the selected position 41A to Y2.
It is conveyed so as to be extracted in the direction. Then, the drive unit 5 moving to the position indicated by the one-dot chain line shown in FIG.
Thus, the selected disk can be loaded on the turntable 54 of No. 0.

[0092]

According to the present invention, as described above, in a disk drive having a transport means for applying a transport force to an edge of a disk and a means for pressing at least a part of the transport means against the disk, When the means is separated from the disk and the conveyed conveying means is moved to the retracted position, it is possible to prevent the conveying means from moving due to the elastic pressure. Therefore, the transporting means can be stabilized at a position away from the disk.

When the power of the motor is switched between the transport means and the disc selecting means by the moving force of the moving member on which the transport means is mounted, the position of the transport means is stabilized. The problem that the power to the disk selecting means is cut off due to external vibration or the like when applied to the means is eliminated.

[Brief description of the drawings]

FIG. 1 is a perspective view showing the internal structure of a disk drive according to the present invention;

FIG. 2 is a plan view of FIG. 1,

FIG. 3 is a sectional view taken along line III-III of FIG. 2;

FIG. 4 is a partial plan view showing a state when the conveying unit is at a conveying force transmitting position;

FIG. 5 is a partial plan view showing a state when the conveying unit is at a conveying force blocking position;

FIG. 6 is a partial bottom view of the state when the conveying unit is at the conveying force blocking position, as viewed from the reverse side of FIG. 5;

FIG. 7 is a perspective view showing a switching mechanism.

FIG. 8 is a side view showing a switching mechanism;

FIG. 9 is a bottom view showing the switching mechanism from the bottom side;

FIG. 10 is a plan view showing a rotating body provided in the switching mechanism;

FIG. 11 is a partial plan view showing a state in which a transfer unit of a conventional disk device is at a transfer force transmitting position.

FIG. 12 is a partial plan view showing a state in which the transfer means of the conventional disk device is at a transfer force blocking position.

[Explanation of symbols]

M setting motor M1 drive motor 1 Disk device 2 base 2A fixed base 5 Transport means 6. First moving member 7. Second moving member 8 Connecting gear 11 Guide member 20 transport means 21, 22, 23, 24 Transport rollers 25, 26, 27 transmission gear 25a, 27a axis 41 Disk holder 42 Guide Post 43 small gear 44 Ring gear 50 drive unit 90 Movable arm 90a protrusion 91 Elastic biasing member 92 Attitude control unit 93 Notch 93b Holding groove 94 Contact part 95 Regulatory Department

Claims (4)

[Claims] A transport unit that applies a transport force to an edge of the disk to transport the disk to a driving position; a moving member that supports the transporting unit; Setting means for moving a moving member in a first direction to separate the transport means from an edge of the disk, wherein the moving member includes at least a part of the transport means;
A rotatable movable arm for moving between a resilient position for resiliently pressing the disk and a retracted position away from the disk, and a biasing unit for biasing the movable arm toward the resilient position; When the moving member moves in the first direction, the moving member contacts a part of the movable arm and moves the movable arm to a retracted posture in accordance with a moving force of the moving member when the moving member moves in the first direction. A contact portion that rotates the movable arm, and a restricting portion that holds a part of the movable arm that has rotated to the retracted position and prevents the movable arm from returning to the resilient position. Characteristic disk device. 2. When the movable arm rotates to the retracted position, the part of the movable arm is pressed against the regulating portion in a direction intersecting a moving direction of a moving member,
The biasing force for the movable arm to return to the resilient position does not act as a force for returning the moving member to a second direction opposite to the first direction. Disk device. 3. A pair of the moving members whose opposing intervals are changed by the setting unit are provided, one of the moving members is provided with the conveying unit, and the other moving member is opposed to the conveying unit. 3. The disk device according to claim 1, further comprising a guide member for guiding an edge of the disk. 4. A disk holding portion on which a disk is placed is moved to a stock portion stacked in the thickness direction of the disk, and to a position where any one of the disk holding portions in the stock portion can be transported by the transport means. Disk selecting means for causing the power of a motor to be transmitted to the transport means when the moving member is located in the second direction, and when the moving member moves in the first direction, 4. The disk device according to claim 1, further comprising a switching unit that transmits the power of the motor to the disk selection unit.