JP2003303479A - Disk device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To drive the driving force for driving a head and the driving force for driving conveyance means or the like by a common motor. <P>SOLUTION: The disk device is provided with a swivel arm 71 facing the respective directions of head transfer means 4 and control means 60 and a locking control plate 80 superposed on this swivel arm 71. A switching arm 90 for rotationally moving the plate 80 by the moving force when the optical head 3 arrives at a threshold position for the movement is disposed between the plate 80 and the means 4. <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 device in which a head moving means for moving an optical head and a carrying means for carrying a disk can be driven by a common motor.

[0002]

2. Description of the Related Art In a disk device, there is a conveying means for contacting the disk when the disk is loaded or unloaded, and a feeding means, and an optical head which operates along the disk surface when reproducing or recording the disk. Are provided. The transporting means is provided with a mechanism for performing posture control between a posture in which the transporting force is brought into contact with the disc surface and a transporting force is exerted, and a posture in which the transporting force is retracted from the disc surface to block the transporting force. On the other hand, the optical head is supported by a screw shaft that extends in the radial direction of the disc, and a mechanism is provided in which the optical head applies a transfer force in the radial direction of the disc along the disc surface by the rotational power when the screw shaft is rotated. Has been. In this type of disk device, a system is employed in which a motor that gives a driving force to the transport means and a motor that gives a power to the optical head are separately installed and driven.

[0003]

However, in a disk device that employs a system in which the transporting means and the optical head are driven by separate motors, a plurality of motors are required, resulting in high cost, and a plurality of motors are installed. Therefore, it becomes difficult to reduce the size of the device.

Further, if it is attempted to drive the conveying means and the optical head by a common motor, a means for switching the power applied to the conveying means and the power applied to the optical head is required, which complicates the mechanism and makes the switching means of the switching means. The switching operation cannot be performed reliably.

The present invention solves the above-mentioned problems of the prior art. It is possible to transfer the optical head and set the operation mode with a common motor, and to switch the power with a simple mechanism. It is an object of the present invention to provide a disk device that can be used.

[0006]

According to the present invention, a rotary drive unit (5) for rotationally driving a disk (D), a head (3) facing the disk (D), and the head (3).
Head moving means (4) for moving the recording medium along the recording surface of the disk (D) and control means (6) for controlling the operation mode.
0) is provided in the first switching state in which the power of the motor (M) is transmitted to the head transfer means (4) and the second switching state in which the power of the motor (M) is transmitted to the control means (60). Switching means to be set (70)
Is provided, and the switching means (70) moves from the first switching state to the first switching state by the moving force when the head (3) transferred by the head transfer means (4) moves to a predetermined position. It is characterized in that it can be switched to two switching states.

In the present invention, the head moving means and the control means for setting various operation modes are operated by the common motor. Further, since the moving force of the head is switched, the power switching timing can be set reliably.

For example, the switching means (70) can be switched to the second switching state by a moving force when the head (3) moves to a position beyond the operating range of the reproducing or recording operation. is there.

The switching means (70) has a drive gear (7) which is rotated by the power of the motor (M).
2), a switching gear (73, 74) meshing with the drive gear (72), and a swing arm (71) for moving the switching gear between the first switching state and the second switching state. And can be configured as provided.

The switching means (70) has a first
It is preferable that the locking means is provided for locking the switching state of No. 2 and the second switching state.

For example, the switching means (70) includes
The swing arm (71) is switched between the first switching state and the second switching state.
Is provided with a lock control member (80) for locking in the switching state, the lock control member (80) is operated by the control means (60), and the swing arm (71) is switched to the second switching state. Held in a state.

By the control means (60), the transport means (9) for transporting the disc is switched between a state in which a transport force is applied to the disc and a state in which it is separated from the disc.

Further, the control means (60) switches the posture of the clamp means (6) for pressing the disk against the rotary drive section (5).

[0014]

1 is a perspective view showing the internal structure of a disk device according to the present invention. 2 to 4 are perspective views showing the switching mechanism of the disk device, and FIGS. 5 to 12 are explanatory views showing the operation of the disk device. 2 to 1
2 is a drawing when the inside of the disk device is viewed from the back side.

The disk device 1 shown in FIG. 1 is a CD, for example.
A disc D such as a (compact disc) or a DVD (digital versatile disc) can be loaded. The disk device 1 is housed in a housing (not shown) having a size of, for example, 1DIN of an in-vehicle device.

As shown in FIG. 1, on the front surface of the housing,
A nose portion having a liquid crystal display panel and various switches is provided (not shown), and the nose portion has a width direction (X direction).
Is provided with a slit-shaped insertion opening. Then, the disc D inserted in the Y1 direction from the insertion opening is loaded into the disc device 1.

The disk device 1 has a chassis 2, and a rotation drive unit 5 is provided on the bottom side of the chassis 2. FIG. 2 shows the disk device 1 from the back side of the chassis 2. The rotation drive unit 5 is attached to a spindle motor 5A and a rotation shaft of the spindle motor 5A to mount a disk. It has a turntable. The turntable is arranged below the introduction path of the disk D in the chassis 2.

On the bottom side of the chassis 2, an optical head 3 having an objective lens is provided adjacent to the rotation driving section 5. Further, a head transfer means 4 for moving the optical head 3 in the radial direction of the disk D along the recording surface of the disk D is provided.

The head transfer means 4 includes a guide shaft (not shown) for movably supporting the optical head 3 and the optical head 3.
It has a screw shaft 4a which gives a moving force to. The optical head 3 has a head base 3A, and a drive hole 3a is formed in this head base 3A.
Is externally inserted in the screw shaft 4a, and a hooking portion such as a female screw portion formed in the drive hole 3a is engaged with a screw groove of the screw shaft 4a. Therefore, when the screw shaft 4a is rotated, the optical head 3 is moved in the radial direction of the disk D.

As shown in FIG. 1, the chassis 2 has a ceiling plate 2a, and a clamp member 6 is provided inside the ceiling plate 2a. The clamp member 6 has a clamp arm 7 and a clamper 8 rotatably attached to the tip of the clamp arm 7. The base end of the clamp arm 7 is rotatably supported in the chassis 2, and the clamp arm 7 is biased by the torsion coil spring 11 toward the bottom of the chassis 2.

When the disk D is transferred in the chassis 2 in the Y1 direction, the clamper 8 faces above the turntable. When the disc D is carried into the chassis 2, the clamp arm 7 is rotated toward the bottom of the chassis 2, and the clamper 8 is urged by the torsion coil spring 11 to move the disc D to the turntable. Press.

As shown in FIG. 1, inside the chassis 2, a roller 9 is provided as a conveying means facing the inside of the insertion opening formed in the casing. The roller 9
Is a long columnar shape extending in the width direction (X direction),
The diameter is thin in the middle part and gradually increases toward both ends.

As shown in FIG. 1, L-shaped rotating arms 12, 12 are provided on both sides of the chassis 2.
The pivot arms 12, 12 have a base end portion located on the Y2 side rotatably supported on the chassis 2 by a shaft 12c. The tip ends of the pivot arms 12, 12 are the rollers of the roller 9. The shaft is supported. Further, guide shafts 12a, 12a formed integrally with the roller shafts project toward the outside of the side surfaces of the rotating arms 12, 12.

Slide plates 13 and 14 as operation setting members are provided on both sides of the chassis 2 in the X direction, and are supported movably in the insertion / ejection direction (Y direction) of the disk D, respectively. Y2 of these slide plates 13 and 14
Slots 13a and 14a are formed at their front ends in the direction, and guide shafts 12a extending from both ends of the roller shaft are inserted into the slots 13a and 14a, respectively.

An elongated hole 13a formed in the slide plate 13
Has an upper guide portion 13a1, a lower guide portion 13a2, and an inclined guide portion 13a3 in the middle thereof. Upper guide 13
a1 is located on the Z1 side, the lower guide portion 13a2 is located on the Z2 side, the upper guide portion 13a1 is oriented in the Y2 direction, and the lower guide portion 13a2 is oriented in the Y1 direction.

An elongated hole 14a formed in the slide plate 14
Has a lower guide portion 14a1 and an upper guide portion (not shown), and an inclined guide portion 14a3 that connects the lower guide portion 14a1 and the upper guide portion. However, the elongated hole 14a has a symmetrical structure in the front-rear direction with respect to the elongated hole 13a, and the lower guide portion 1
4a1 is oriented in the Y2 direction and the upper guide portion is oriented in the Y1 direction.

As shown in FIG. 1, when the slide plate 13 moves to the rear side (Y1 side) of the apparatus and the slide plate 14 moves to the front side (Y2 side) of the apparatus, the guide shaft 12a of the roller 9 is moved.
Is lifted in the Z1 direction by the upper guide portion 13a1 of the slide plate 13 and the upper guide portion of the slide plate 14, and the roller 9 comes into contact with the disk surface to reach a conveying force transmitting posture capable of giving a conveying force. In addition, the slide plate 13 moves to the front side of the device (Y2 side), and the slide plate 14 moves to the rear side of the device (Y1 side).
Side), the guide shaft 12a of the roller 9 is lowered in the Z2 direction by the lower guide portion 13a2 of the slide plate 13 and the lower guide portion 14a1 of the slide plate 14, and the roller 9 moves away from the disk surface to convey force. To reach the conveyance force cutoff posture that cannot give.

The entire chassis 2 including the ceiling plate 2a is supported in the housing by an elastic support member such as an oil damper or an air damper and a coil spring. Therefore, when the disk device 1 is used for a vehicle, vibration of the vehicle body acts on the chassis 2 from the housing via the elastic support member.

A lock mechanism is provided between the slide plates 13 and 14 and the housing.
Direction, the slide plate 14 moves in the Y2 direction, and the chassis 2 is locked in the housing by the lock mechanism when the roller 9 is in the conveyance force transmission posture in which it is lifted. As a result, the disc D inserted from the insertion port is stably guided to the rotation drive unit 5. On the contrary, the slide plate 13
Is moved in the Y2 direction, the slide plate 14 is moved in the Y1 direction, and the roller 9 is lowered in the conveying force blocking posture, the lock by the lock mechanism is released, and the chassis 2 in the housing receives the elastic support member. It is elastically supported by.

On the upper surface of the ceiling plate 2a of the chassis 2,
A rotating plate 20 is provided. The opening 23 formed in the center of the rotating plate 20 has arcuate inner peripheral edges 23a and 2a.
3b is formed, and the inner peripheral edges 23a and 23b are
A guide piece 2 integrally formed in an arc shape from the ceiling plate 2a
The outer peripheral surfaces of b and 2b are supported so that they can slide.
Therefore, the rotating plate 20 is rotatable on the upper surface of the ceiling plate 2a with the center of the radius of curvature of the inner peripheral edges 23a and 23b as a fulcrum.

Arms 21 and 22 extending in opposite directions in the X direction are integrally formed on the rotary plate 20.
The slide plates 13 and 14 are formed with guide pieces 13b and 14b, respectively, which are bent outward in the X direction. The guide pieces 13b and 14b have U-shaped groove portions 13 formed therein.
c, 14c are formed. These groove portions 13c, 14c
Inside the pin 21 provided at the tips of the arms 21 and 22.
a, 22a are inserted, the arm 21 is connected to the slide plate 13, and the arm 22 is connected to the slide plate 14
Are linked to. Therefore, the slide plate 13,
The rotating plate 20 is rotated on the ceiling plate 2a in accordance with the sliding motion of 14.

A cutout hole 50 is provided behind the ceiling plate 2a.
Is formed, and a part of the clamp arm 7 is exposed from the cutout hole 50. An engaging portion 16 is integrally bent and formed in the clamp arm 7 at an intermediate position between a base end portion thereof and a tip portion having the clamper 8, and the engaging portion 16 is formed in the cutout hole 50. Is exposed to. On the other hand, a lifting portion 25 is integrally formed on the rear side of the rotating plate 20, and a tip portion of the lifting portion 25 is inserted into the cutout hole 50 and extends below the ceiling plate 2a. There is.

As shown in FIG. 1, the slide plate 13 is Y1.
Direction, the slide plate 14 is moved in the Y2 direction, and when the roller 9 is lifted in the Z1 direction to be in the conveying force transmitting posture, the rotating plate 20 is rotated in the clockwise direction and the lifting portion is moved. 25 goes under the engaging portion 16, and the clamp arm 7 of the clamp member 6 is lifted in the direction away from the disc D. Further, when the slide plate 13 moves in the Y2 direction and the slide plate 14 moves in the Y1 direction to lower the roller 9 into the conveying force blocking posture, the rotating plate 20 is rotated counterclockwise. The lifting portion 25 comes out of the engaging portion 16. Therefore, the clamp arm 7 is biased by the torsion coil spring 11, and the disk D is pressed against the turntable by the clamper 8.

As shown in FIG. 2, the bottom plate of the chassis 2 is provided with a control means 60 and a switching means 70.

A motor M is fixed to the bottom plate of the chassis 2, and the output shaft of the motor M has a worm gear m1.
Is fixed. The bottom plate of the chassis 2 includes a large-diameter gear 31a having a spur tooth shape and a small-diameter gear 31 that is a worm wheel.
A two-stage gear 31 in which b is integrally formed is provided, and the small diameter gear 31b meshes with the worm gear m1. A small gear 4b, which is a worm wheel, is provided at one end of the screw shaft 4a which constitutes the head transfer means 4.
Is fixed. A two-stage gear 32, which is integrally formed with a small-diameter gear 32b, which is a worm gear meshing with the small gear 4b, and a spur tooth-shaped large-diameter gear 32a is provided on the side thereof.

Between the two-stage gear 31 and the two-stage gear 32, a swing arm 71 forming a part of the switching means 70 is provided.

As shown in FIG. 4, the swing arm 71 is formed in a substantially fan shape and is rotatably supported by the chassis 2 with a shaft 71a as a fulcrum. The swing arm 71
A drive gear 72 having a spur tooth shape is rotatably supported by the shaft 71a between the chassis 2 and the chassis 2.
The drive gear 72 always meshes with the large-diameter gear 31 a of the two-stage gear 31.

On the swing arm 71, a spur tooth-shaped switching gear 73 directed to the two-stage gear 32 is rotatably supported, and the switching gear 73 is the driving gear 7.
Always in mesh with 2. Further, the swinging arm 71 rotatably supports a spur tooth-shaped switching gear 74 directed to a two-stage gear 33, which will be described later, and the switching gear 74 always meshes with the drive gear 72. There is. When the drive gear 72 is driven, both the switching gear 73 and the switching gear 74 meshing with the drive gear 72 are rotated. Then, due to the swinging motion of the swinging arm 71, the rotational power of the drive gear 72 is
It is adapted to be selectively transmitted to the stage gear 32 and the two stage gear 33.

As shown in FIG. 4, the swing arm 71 is
A lock protrusion 75 is integrally formed with the lock protrusion 75 that protrudes to the opposite side to the side where the gears 72, 73, 74 are arranged.

As shown in FIGS. 2 and 3, the chassis 2
Is provided with a substantially fan-shaped lock control plate 80 at a position partially overlapping the swing arm 71. The lock control plate 80 is rotatably supported by a shaft 81 fixed to the chassis 2. ing. Also, this lock control plate 80
Is urged counterclockwise in FIG. 5 by a spring (not shown). A rectangular lock recess 80a is cut out at the peripheral edge of the lock control plate 80. Further, the lock recess 80
A restriction piece 80b is formed to close a part of a.

A switching arm 90 forming a part of switching means is provided in the space between the lock control plate 80 and the moving area of the optical head 3, and the switching arm 9 is provided.
0 is rotatably supported by a shaft 93 fixed to the bottom plate of the chassis 2.

The switching arm 90 has a boomerang shape and has an input arm 91 extending toward the optical head 3 and an output arm 92 extending toward the lock control plate 80. The tip of the input arm 91 is located at a position overlapping the screw shaft 4a and within the moving area of the optical head 3. A pressing projection 92a is formed on the tip of the output arm 92 in the Z1 direction, and the pressing projection 92a extends to a position corresponding to a side surface 80c of the lock control plate 80 which is a pressed portion. Further, as shown in FIGS. 8 to 12, when the lock control plate 80 is rotated clockwise and is restrained, a gap having a small size δ is formed between the side surface 80c and the pressing protrusion 92a. It

A control means 6 is provided near the lock control plate 80.
0 is provided. In this control means 60, a central shaft 61a is fixed to the bottom plate of the chassis 2. A two-stage gear 62 shown in FIG. 4 is rotatably supported on the Z1 side of the central shaft 61a, and an attitude control member 61 shown in FIG. 2 is rotatably supported on the Z2 side. The two-stage gear 62 and the attitude control member 61 can rotate independently of each other. As shown in FIG. 4, the two-stage gear 62 is integrally formed with a spur toothed small gear 62a on the side closer to the attitude control member 61 and a spur toothed large gear 62b on the far side.

In the space between the switching gear 74 provided on the swing arm 71 and the two-stage gear 62,
A reduction gear train including a pair of two-stage gears 33 and 34 is provided. One of the two-stage gears 33 is a spur tooth-shaped small-diameter gear 3
3a and large diameter gear 33b are integrally formed,
The small diameter gear 33a faces a position where it can mesh with the switching gear 74. In the other two-stage gear 34, a small diameter gear 34a (see FIG. 5) and a large diameter gear 34b are integrally formed, and the large diameter gear 34b meshes with the small diameter gear 33a. Then, the small-diameter gear 34a corresponds to the two-stage gear 6
It meshes with the second large gear 62b.

As shown in FIG. 4, the control means 60 is provided with a planetary gear 63 that meshes with the small gear 62a. A rotary shaft 63 a that rotatably supports the planetary gear 63 is fixed to the attitude control member 61.

As shown in FIGS. 3 and 4, the two-stage gear 6
A rack member 64, which is an internal gear, is provided outside the second large gear 62b. The rack member 64 is a fixed rack 64 that is a fixed internal gear fixed to the chassis 2.
a and a movable rack 64b, which is a movable internal gear that is rotatable with a shaft 65 fixed to the chassis 2 as a fulcrum and is located in a line with the fixed rack 64a. The fixed rack 64a is fixed to a position where it meshes with a planetary gear 63 that moves around the small gear 62a, and the movable rack 64b has a transmission posture that meshes with the planetary gear 63 and a retracted posture that separates from the planetary gear 63. It is possible to rotate between and. The movable rack 64
When b is in a position where it can mesh with the planetary gear 63, the inner teeth of the fixed rack 64a and the inner teeth of the movable rack 64b are located on a continuous arc.

As shown in FIGS. 2 and 5, a guide groove 66 is provided on the Z2 side surface of the attitude control member 61. The guide groove 66 includes a retreat guide path (first guide path) 66a formed along an arc locus centered on the central axis 61a on the inner peripheral side near the central axis 61a, and the retreat guide path 66a. The central axis 6 is continuous with one end.
It has a motion guide path (second guide path) 66b extending in a direction away from 1a. In the guide groove 66,
The central shaft 6 is provided at a position facing the operation guide path 66b.
Standby guideway 6 extending along an arc locus centered on 1a
6c are continuously formed.

Further, the guide groove 66 is located on the outer peripheral side farther from the central shaft 61a than the operation guide passage 66b and the standby guide passage 66c, and the central shaft 61a.
Lock guideway 66 extending along an arcuate path centered at
d is provided, and a part of the lock guide path 66d faces the standby guide path 66c. Further, there is formed an introduction guide path 66e which extends outward from one end of the lock guide path 66d and communicates with the outside of the attitude control member 61.

In this embodiment, the guide paths 66a, 66
b, 66c and guide paths 66d, 66e are formed by a series of guide grooves 66, respectively.
66b and 66c and the guide paths 66d and 66e may be formed as separate guide grooves.

As shown in FIGS. 2 and 5, another guide groove 67 is formed on the Z2 side surface of the attitude control member 61 together with the guide groove 66. The guide groove 67 includes a transmission guide path (third guide path) 67a formed along an arc locus centered on the central axis 61a, and the transmission guide path 6
7a has an evacuation guide path (fourth guide path) 67b continuously extending in a direction away from the central axis 61a.

At the tip of the movable rack 64b, an arm portion 68 extending so as to overlap the Z2 side surface of the attitude control member 61.
Are integrally formed. A guide protrusion 68a is formed at the tip of the arm portion 68 in the Z1 direction, and the guide protrusion 68a is inserted into the guide groove 67.

As shown in FIG. 5, the movable rack 64b.
A drive arm 69 that functions as a transmission power switching unit is rotatably supported on the shaft 65 that supports the. A drive gear G1 is rotatably supported on the shaft 65. The drive gear G1 is located between the bottom plate of the chassis 2 and the movable rack 64b. As shown in FIG. 5, the drive gear G1 is a two-stage gear integrally formed with a small-diameter gear G1a, and the small-diameter gear G1a always meshes with a large gear 62b of the two-stage gear 62.

The drive arm 69 has a first arm 69 extending to a position overlapping the Z2 side surface of the attitude control member 61.
It has a and the 2nd arm 69b extended to the roller 9 side. A guide protrusion 69a1 is provided at the tip of the first arm 69a.
Is formed in the Z1 direction and is inserted into the guide groove 66. A transmission gear G2 that meshes with the large gear G1b of the drive gear G1 is rotatably supported at the tip of the second arm 69b.

The first arm 69a and the second arm 69b
Are separately formed, and both are rotatably supported by the shaft 65. In addition, the first arm 69a and the second arm 69b
Are attracted to each other by a spring 69c, and both arms 69a and 69b are hooked to each other so as to be stable at the relative angle shown in FIG. The drive arm 69 rotates counterclockwise, and the transmission gear G2 moves to the reduction gear G.
3 is engaged with the spring 69,
It is exerted by the elastic force of c. The arms 69a and 69b may be integrally formed.

The reduction gear G3 is rotatably supported by a shaft fixed to the bottom plate of the chassis 2.
The reduction gear G3 and the reduction gear G meshing with the reduction gear G3
4, G5, and a connecting gear G6 having a helical gear form a power transmission unit Ga. The roller 9
A gear G7 is fixed to one end of the roller shaft. Figure 1
As shown in FIG. 7, when the roller 9 is lifted in the Z1 direction and is in the conveying force transmitting posture, the gear G7 provided on the roller shaft and the connecting gear G6 are engaged with each other.

The lock control plate 80 is integrally formed with an arm portion 82 which overlaps the Z2 side surface of the attitude control member 61. The guide protrusion 8 facing the Z1 direction is provided at the tip of the arm portion 82.
2a is formed, and the guide protrusion 82a can be inserted into the guide groove 66.

As shown in FIGS. 2 and 5, the arm 68 provided at the tip of the movable rack 64b is provided with a connecting protrusion 68b protruding in the Z2 direction. This connecting protrusion 6
8b is inserted into a connection hole 100a formed at one end of the rack control bar 100 extending in the Y direction. The rack control bar 100 is constantly biased in the Y2 direction by a biasing member 102 such as a torsion coil spring.

As shown in FIG. 5, a shaft 104 is fixed to the bottom plate of the chassis 2, and a small arm 105 is fixed to the shaft 104.
Is rotatably supported. And this small arm 10
The connecting shaft 106 provided at the end of the rack control bar 100 on the Y1 side is inserted into the connecting hole 105a opened at 5.

As shown in FIG. 1, the ceiling plate 2a of the chassis 2 has a pair of left and right positioning arms 108 and 10.
9 is rotatably provided. Positioning arm 108
A positioning pin 111 extending in the Z2 direction is provided at the tip of the positioning arm 111, and a positioning pin 112 extending in the Z2 direction is provided at the tip of the positioning arm 109. The positioning pins 111 and 112 transfer the disk D in the chassis 2. It extends along the route.

When the disk D is not transported, the positioning arm 108 and the positioning arm 109 are biased by a spring so as to approach each other. When the disk D is conveyed in the Y1 direction by the roller 9, the positioning pins 111 and 112 are moved by the outer peripheral edge of the disk D.
Is pushed, and the positioning arms 108 and 109 are rotated in the directions of opening each other. And the positioning arm 108
The disk D is positioned so that the center hole of the disk D, which is in contact with the positioning pins 111 and 112, coincides with the center of the turntable when the facing distance between the positioning arm 109 and the positioning arm 109 is maximized.

As shown in FIG. 1, a trigger arm 113 that is rotated by one positioning arm 109 is provided in the chassis 2. The trigger arm 113 rotates about a shaft 114 as a fulcrum and is connected to the positioning pin 112. A trigger pin 107 provided on the small arm 105 is connected to the trigger arm 113.

With the disk D not loaded,
The positioning arms 108 and 109 are rotated so as to approach each other, and the trigger arm 113 shown in FIG. 1 is rotated clockwise. Therefore, FIG. 1 when the chassis 2 is viewed from the back side.
2, the small arm 105 is rotated counterclockwise by the trigger arm 113 (see FIG. 1).
Further, as shown in FIG. 1, when the disk D is transported and positioned by the positioning arms 108 and 109, the trigger arm 113 is rotated counterclockwise. As a result, as shown in FIGS. 5 to 11, the small arm 105 is rotated in the clockwise direction when viewed from the back side of the chassis 2.

As shown in FIG. 5, the slide plate 13 is integrally formed with a guide plate 101 facing the X1 side. The guide plate 101 has a rotation operation hole 101a.
And the rotation restriction hole 101b are continuously formed, and the rotation operation hole 101a is linearly formed in the X direction.
Further, although the rotation restricting hole 101b is formed along the arc locus, as shown in FIGS. 10 to 12, when the slide plate 13 is transferred to the end in the Y1 direction, the rotation restricting hole 101b is formed. The center of the radius of curvature of the arcuate locus is coincident with the central axis 61a.

A projection 61b is integrally provided on the surface of the attitude control member 61 on the Z2 side.
Can slide in the rotation operation hole 101a and the rotation restriction hole 101b.

Next, the operation of the disk device 1 will be described. (Disk Drive State) FIG. 5 shows a state in which the disk D is loaded in the rotary drive unit 5 and the reproducing process and the recording process are being executed.

In the state shown in FIG. 5, the attitude control member 61 is rotated clockwise, and the slide plate 13 is moved forward (Y2 side) by the protrusion 61b. The slide plate 14 is moved rearward (on the Y1 side) via the rotating plate 20 shown in FIG. Therefore, the roller 9 is lowered by the lower guide portion 13a2 and the lower guide portion 14a1 of the elongated holes 13a and 14a formed in the slide plates 13 and 14, and the roller 9 is separated from the disc D and is positioned in the conveyance force blocking posture. There is. Therefore, the gear G7 provided on the roller shaft is separated from the connecting gear G6 in the Z2 direction.

In the state shown in FIG. 5, the slide plate 13 is
Since the rotating plate 20 is rotated counterclockwise in FIG. 1, the lifting portion 25 formed integrally with the rotating plate 20 has the engaging portion 16 formed on the clamp arm 7.
You're out of the way. Therefore, the clamp arm 7 is lowered by the urging force of the torsion coil spring 11, and the disc D is pressed against the turntable of the rotary drive unit 5 by the clamper 8.

Further, in the reproducing or recording operation shown in FIG. 5, the optical head 3 moves in a region which does not hit the input arm 91. Therefore, in FIG. 5, the lock control plate 80 is rotated counterclockwise by the urging force of a spring (not shown), the side surface 80c of the lock control plate 80 pushes the pressing projection 92a, and the switching arm 90 moves clockwise. Has been rotated to. Further, the lock protrusion 7 of the swing arm 71 is provided in the lock recess 80 a formed in the lock control plate 80.
5 is positioned and held by the restriction piece 80b so as not to come out. As a result, the swing arm 71 maintains the state of being rotated clockwise in FIG. 5, and the switching gear 73 of the swing arm 71 is changed to the large-diameter gear 3 of the two-stage gear 32.
It meshes with 2a.

Power from the motor M is transmitted to the small gear 4b via the two-stage gear 31, the drive gear 72, the switching gear 73 and the two-stage gear 32, and the screw shaft 4a is rotated. By the rotational force of the screw shaft 4a, the optical head 3 is moved in a direction toward and away from the rotary drive unit 5, that is, in a radial direction of the disk D. The disk D is rotationally driven by the rotary drive unit 5, and the optical head 3 is moved in the radial direction of the disk D to record a signal on the disk D and the disk D.
The signal from is reproduced.

In the recording or reproducing operation, the recording area of the disk D is scanned by the laser focused by the objective lens provided in the optical head 3. However, when the optical head 3 moves within this scanning range, the optical head 3
It does not hit the input arm 91 of the switching arm 90. (Disc Ejecting Operation) When the reproducing process or the recording process of the disc D is completed and the disc D is ejected, the drive gear 72 is rotated counterclockwise (CCW) by the motor M as shown in FIG. The optical head 3 is moved to the inner peripheral side. At this time, the optical head 3 is moved further to the inner circumference side of the disk D than the moving range due to the reproduction or recording operation, and the optical head 3 is moved to the movement limit position A on the inner circumference side as shown in FIG. To be made.

In the reproducing or recording operation shown in FIG. 5, the tip of the input arm 91 is located at a position projecting from the movement limit position A toward the optical head 3. As shown in FIG. 6, when the optical head 3 moves to the movement limit position A, the input arm 91 is pressed by the head base 3A of the optical head 3, and the switching arm 90 is rotated counterclockwise.

When the switching arm 90 rotates counterclockwise, the side surface 80c of the lock control plate 80 is pressed by the pressing projection 92a of the output arm 92, and the lock control plate 80 is rotated clockwise. The rotation angle of the lock control plate 80 at this time is in the range from the state of FIG. 5 to FIG. 7. First, while the lock control plate 80 reaches the posture of FIG. 6 which is in the middle of the rotation range, the restriction piece 80 of the lock control plate 80 is reached.
b is disengaged from the lock protrusion 75 of the swing arm 71, and the restraint of the lock protrusion 75 by the lock recess 80a is released.

At this time, since the drive gear 72 rotates counterclockwise and the switching gear 73 rotates clockwise, the teeth of the switching gear 73 are affected by the reaction force of the force applied to the teeth of the large diameter gear 32a. The swinging arm 71 with the restraint released is rotated counterclockwise, the switching gear 73 separates from the large diameter gear 32a, and the other switching gear 74 moves to the two-stage gear 33.
Mesh with the large diameter gear 33b. At this time, as shown in FIG. 7, the lock protrusion 75 of the swing arm 71 comes out from the lock recess 80a.

In this embodiment, since the load on the two-stage gear 32 side is large, when the restraint of the swinging arm 71 is released, the swinging arm 71 is rotated by the reaction force of the rotational force of the switching gear 73. The switching gear 74 on the other side can be meshed with the large diameter gear 33b. Swing arm 7 using reaction force of gear teeth
Since 1 is rotated, between the drive gear 72 and the swing arm 71 and between the swing arm 71 and the switching gears 73, 7
The swing arm 71 can be reliably rotated without applying a large frictional force to the swing arm 4.

After that, the power of the motor M is changed to the drive gear 7
It is transmitted from 2 to the two-stage gears 33 and 34 via the switching gear 74. Further, the small gear 34a of the two-stage gear 34 is transmitted to the large gear 62b of the two-stage gear 62 provided in the control means 60, and the large gear 62b is rotated counterclockwise. As shown in FIG. 4, since the planetary gear 63 meshes with the small gear 62a that rotates together with the large gear 62b,
The planetary gear 63 rotates clockwise. In addition, the planetary gear 6
Since 3 rotates in a state of meshing with the fixed rack 64a, the attitude control member 61 integral with the rotation shaft 63a of the planetary gear 63 is rotated counterclockwise.

When the posture control member 61 starts to move in the counterclockwise direction, as shown in FIG. 8, a guide projection 82a provided on the arm 82 integral with the lock control plate 80 is formed on the posture control member 61. The guide groove 66 is drawn into the lock guide path 66d from the introduction guide path 66e. By this guiding operation, as shown in FIG. 8, the lock control plate 80 is further rotated in the clockwise direction, and the lock projections 75 are locked.
The lock projection 75 is regulated so as not to ride up on the curved surface 80d and return to the lock recess 80a. Therefore, the swing arm 71 is restricted from rotating clockwise. After that, while the posture control member 61 rotates counterclockwise, the guide protrusion 82a is guided while sliding along the lock guide path 66d.
Since the radius from 1a is an arcuate locus having a constant radius, the lock control plate 80 is held in the clockwise rotated state as shown in FIG. 9, and the state in which the switching gear 74 and the large diameter gear 33b mesh with each other is maintained. To do.

While the attitude control member 61 is rotated from the position shown in FIG. 8 to the position shown in FIG. 10, the protrusion 61b provided on the attitude control member 61 is integrated with the slide plate 13 to form the guide plate 101.
Since it is fitted in the rotation operation hole 101a formed in
The slide plate 13 moves backward (Y
In one direction). The rotary plate 20 is rotated clockwise by the slide plate 13 as shown in FIG. 1, and the slide plate 14 connected to the rotary plate 20 is moved in the Y2 direction.

When the slide plate 13 moves from the position shown in FIG. 8 to the position shown in FIG. 10 and the slide plate 14 moves in the Y2 direction, the roller shaft of the roller 9 slides with the upper guide portion 13a1 of the slide plate 13 and slides. The roller 9 is guided by the upper guide portion of the plate 14 and is set in a power transmission posture in which the roller 9 contacts the disk D. At this time, the gear G7 provided on the roller shaft meshes with the connecting gear G6. Further, since the rotating plate 20 rotates clockwise, as shown in FIG. 1, the lifting portion 25 of the rotating plate 20 goes under the engaging portion 16 formed on the clamp arm 7 and the clamper 8 is lifted in the Z1 direction away from disk D. Therefore, the clamp of the disk D by the rotation drive unit 5 is released.

Further, when the slide plate 13 moves in the Y1 direction and the slide plate 14 moves in the Y2 direction, the lock mechanism provided between the slide plate 13 and the case causes the chassis 2 to move in the case.
Is locked.

When the attitude control member 61 rotates from the state shown in FIG. 10 to the state shown in FIG.
Although b moves inside the rotation restricting hole 101b, at this time, since the rotation restricting hole 101b is located on an arc locus centered on the central axis 61a, during this time, the attitude control member 61 moves to the slide plate 13 Is not given movement power.

Further, in the first process in which the attitude control member 61 rotates counterclockwise from FIG. 8, the guide protrusion 69a1 provided on the first arm 69a of the drive arm 69 is located in the retracted guide path 66a. . Since the evacuation guide path 66a is located on the arcuate locus centering on the central axis 61a, the drive arm 69 is not rotated from the state shown in FIG. 8 during this time, and the reduction gear G2 moves from the reduction gear G3. It remains apart. The attitude control member 61 is shown in FIG.
From the position shown in FIG. 10 to the position shown in FIG. 10, the guide protrusion 69a1 is drawn from the retracting guide path 66a into the operation guide path 66b,
The drive arm 69 is rotated counterclockwise by the motion guide path 66b. Therefore, the reduction gear G2 provided on the second arm 69b meshes with the reduction gear G3 of the power transmission unit Ga.

Then, the rotational force of the large gear 62b is transmitted from the drive gear G1 to the connecting gear G6 via the power transmission unit Ga. Further, at that time, the power is transmitted to the gear G7 meshing with the connecting gear G6, and the roller 9 rising to the position where it contacts the disc D is rotated in the disc ejection direction.

Therefore, the unclamped disk D is conveyed toward the insertion opening of the housing by the rotational force of the roller 9.

When the attitude control member 61 is rotated to the state shown in FIG. 10, the planetary gear 63 is disengaged from the fixed rack 64a. However, at this point of time, the guide protrusion 68a provided at the tip of the movable rack 64b is located inside the transmission guide path 67a of the guide groove 67. This transmission guideway 67a
Is located on an arc locus about the central axis 61a, the movable rack 64b is located on the same arc as the fixed rack 64a. Therefore, the planetary gear 63 moves counterclockwise while disengaging from the fixed rack 64a and meshing with the movable rack 64b. Therefore, the posture control member 61 rotates from the state of FIG. 9 to the state of FIG. 12 through FIGS. 10 and 11.

During this time, the guide projection 82a provided on the lock control plate 80 is moved to the end of the lock guide path 66d. Further, the guide protrusion 69a1 provided on the drive arm 69 is moved from the operation guide path 66b to the standby guide path 66c. Since the standby guide path 66c is located on the arcuate locus centering on the central axis 61a, the drive arm 69 is maintained in the posture shown in FIG. 12, and the meshing of the reduction gear G2 and the reduction gear G3 is maintained. .

Further, when the attitude control member 61 is rotated to the position shown in FIG. 12, the guide protrusion 68a provided on the movable rack 64b reaches a position facing the retracting guide path 67b at the end of the guide groove 67. At this point, the disk D is moved to Y2 by the rotational force of the roller 9 driven by the motor M.
Since the outer peripheral edge of the disk D is away from the positioning pin 112 shown in FIG. 1 because the disk is transferred in a certain direction in the direction, the positioning arm 109 is rotatable in the clockwise direction, and is also interlocked with the positioning arm 109. The trigger arm 113 is also rotatable in the clockwise direction in FIG.

Therefore, the small arm 105 connected to the trigger arm 113 via the trigger pin 107 is also in a state of being able to rotate counterclockwise in FIG. 12, and receives the biasing force of the biasing member 102. The rack control bar 100 is also movable in the Y2 direction. Therefore, in the state of FIG. 12, the guide projection 68a enters the retracting guide path 67b by the urging force of the urging member 102, and the posture control member 61 is locked so as not to rotate at that position. Further, the movable rack 64b is rotated by the rack control bar 100 to a position away from the planetary gear 63, and is brought into a retracted posture. Therefore, after that, the large gear 62
When b is rotated, the planetary gear 63 meshing with the small gear 62a only rotates while stopping at the position shown in FIG.

Therefore, in the state of FIG. 12, the control means 60
1, the attitude control member 61 is locked, the slide plate 13, the rotary plate 20, and the slide plate 14 do not move in the state shown in FIG. 1, and the roller 9 stops in the power transmission attitude in which the roller D contacts the disk D. Then, by the power of the motor M, only the second gear 62 can freely rotate. Further, the drive gear 69 causes the reduction gears G2 and G
3, the power of the motor M is transmitted from the two-stage gear 62 to the roller 9 through the power transmission unit Ga, and the rotational force of the roller 9 allows the disc D to be transferred toward the insertion slot. Becomes (Disc Loading Operation) In the standby state where the disc D is ejected, the motor M is stopped in the states shown in FIGS. 1 and 12. Further, in the state shown in FIG. 12, the guide protrusion 82a of the lock control plate 80 is held in the lock guide path 66d and is rotated clockwise. Further, the optical head 3 has moved to the movement limit position A and the switching arm 90 is rotating in the counterclockwise direction. At this time, the pressing protrusion 92a of the switching arm 90,
A gap δ is formed between the lock control plate 80 and the side surface 80c.

When it is detected that the disc D is inserted from the insertion port of the housing, the motor M is started. The drive gear 72 is driven by the power of the motor M. The rotation direction of the drive gear 72 at this time is clockwise (C) in FIG.
W). This rotational force is transmitted from the switching gear 74 to the large gear 62b of the control means 60 via the two-stage gears 33 and 34, and the large gear 62b is driven clockwise. The power of the large gear 62b is transmitted from the drive gear G1 to the transmission gear train G.
It is transmitted to the gear G7 via a, and the roller 9 is driven in the direction for loading the disk D.

The rotation force of the roller 9 causes the disc D
Are sent into the chassis 2 of the disk device 1. The outer peripheral edge of the disk D being fed hits the positioning pins 111 and 112 shown in FIG. 1, and the positioning pin 111 and 112 is pushed in the Y1 direction by the transfer force of the disk D, and the positioning arm 108 moves clockwise. The positioning arm 109 is rotated, and the positioning arm 109 is rotated counterclockwise. Then, when the center hole of the disk D coincides with the turntable of the rotary drive unit 5, the positioning arm 10 is moved.
8 and 109 rotate to the final position in the direction away from each other,
The disk D is positioned with its center hole aligned with the turntable.

As shown in FIG. 1, when the positioning arm 109 rotates counterclockwise to the final position and the disk D is positioned as described above, the trigger lever 113 is moved.
Is rotated counterclockwise and is connected to the trigger lever 113 and the trigger pin 107 via the small arm 1
05 is rotated clockwise from the state shown in FIG.
The state shown in 1 is obtained.

When the small arm 105 rotates clockwise,
The rack control bar 100 is moved in the Y1 direction, the movable rack 64b is rotated counterclockwise, and meshes with the planetary gear 63. In addition, the guide protrusion 68a is provided in the evacuation guideway 6
After exiting from 7b, the posture control member 61 is unlocked. As described above, the large gear 62b rotates clockwise,
Since the small gear 62a is rotated clockwise together with the large gear 62b and the planetary gear 63 is rotated counterclockwise,
At the time when the planetary gear 63 and the movable rack 64b mesh with each other, the attitude control member 61 is rotated clockwise.

The operation at this time is a reverse operation from FIG. 12 to FIG. In the clockwise rotation operation of the attitude control member 61 at this time, the guide protrusion 68a provided on the movable rack 64b is positioned in the transmission guide path 67a, and the movable rack 64b is in a state of meshing with the planetary gear 63. maintain.

Further, the attitude control member 61 has a structure shown in FIGS.
The guide protrusion 69a1 provided on the drive arm 69 moves from the standby guide path 66c to the operation guide path 6 while rotating to
The evacuation route 66a is reached via 6b. During this time, the drive arm 69 rotates clockwise, the reduction gear G2 separates from the reduction gear G3, and the rotational force from the large gear 62b causes the roller 9 to rotate.
, And the roller 9 stops.

Further, while the attitude control member 61 rotates clockwise to reach the states shown in FIGS. 9 to 7, the slide plate 13 is driven in the Y2 direction by the protrusion 61b, and the rotary plate 2 is rotated.
0 is driven counterclockwise in FIG. 1, and the slide plate 14 is further moved in the Y1 direction. Therefore, the clamp arm 7 is lowered, and the center hole of the disk D is clamped by being clamped by the turntable and the clamper 8. Further, the moving force of the slide plates 13 and 14 causes the roller 9 to descend so as to separate from the disc. Further, the lock between the chassis 2 and the casing is released, and the chassis 2 is elastically levitated in the casing by the damper.

When the attitude control member 61 is rotated to the position shown in FIG. 7, the guide projection 82a provided on the lock control plate 80 is provided.
Is guided from the lock guide path 66d to the introduction guide path 66e. By the guide force at this time, the lock control plate 80
However, the curved surface 80d of the lock control plate 80 is rotated slightly counterclockwise from the state of FIG.
The head swing arm 71 is released from the lock protrusion 75 of No. 1 and the restraint of the swing arm 71 is released.

At this time, the planetary gear 63 is fixed to the fixed rack 64a.
Since the large gear 62b has a large diameter and two two-stage gears 33 and 34 mesh with each other,
The load on the stage gear 33 side is large. Therefore, the switching gear 74, which is rotating counterclockwise, is
As shown in FIG. 6, the swing arm 71 is rotated clockwise by the reaction force of the rotational force applied to the. By this rotation, the lock projection 75 enters into the lock recess 80a of the lock control plate 80, the switching gear 74 separates from the second gear 33, and the other switching gear 73 moves the second gear 3.
It meshes with the second large-diameter gear 32a. And at this time, FIG.
As shown in, the side surface 80c of the lock control plate 80 and the pressing protrusion 92a of the switching arm 90 contact each other.

In the state shown in FIG. 6, the power of the motor M is transmitted from the drive gear 72 to the two-stage gear 32 via the switching gear 73, and the small gear 4b drives the screw shaft 4a to drive the light. The head 3 is moved in a direction away from the rotary drive unit 5. Switching arm 90 at that time
Becomes free. Therefore, the lock control plate 80, which is urged in the counterclockwise direction by the spring, rotates in the counterclockwise direction, and as shown in FIG.
6e, the restriction piece 80b of the lock control plate 80 is engaged with the lock protrusion 75, and the lock protrusion 75
Is held in the lock recess 80a, and the swing arm 71 is held in a state of being rotated clockwise.

After that, the power of the motor M is applied to the screw shaft 4a to move the optical head 3, and the reproducing operation and the recording operation are performed.

[0100]

According to the present invention described above, since the head and the control means can be driven by one motor, the manufacturing cost can be kept low, and the power of the motor can be controlled by the head transfer means and the control means. The switching means for switching between can be configured with a simple mechanism and can surely set the timing.

[Brief description of drawings]

FIG. 1 is an external perspective view showing a chassis located inside a disk device of the present invention and a mechanism incorporated in the chassis,

FIG. 2 is a perspective view showing a mechanism of a control unit and a switching unit of the disk device,

FIG. 3 is the same perspective view as in FIG. 2 showing a state in which the switching means is partially removed.

FIG. 4 is the same perspective view as FIG. 2 showing a state in which the attitude control member of the switching means is removed,

5 is an operation explanatory view showing the disc device from the back side of FIG. 1, showing a state when the disc is driven;

6 is an operation explanatory view showing the disk device from the back side of FIG. 1, showing a state when the head reaches a movement limit position;

FIG. 7 is an operation explanatory view showing the disc device from the back side of FIG. 1, showing a state in which the power of the motor is switched;

FIG. 8 is an operation explanatory view showing the disc device from the back side of FIG. 1, showing a state in which the disc ejection operation is started.

9 is an operation explanatory view showing the disk device from the back side of FIG. 1, showing a state in which the drive arm has started operation; FIG.

10 is an operation explanatory view showing the disk device from the back side of FIG. 1, showing a state when the feeding operation of the slide plate is completed, FIG.

11 is an operation explanatory view showing the disk device from the back side of FIG. 1, showing a state when the feeding operation by the guide groove is completed, FIG.

12 is an operation explanatory view showing the disk device from the back side of FIG. 1, showing a state when the movable rack is in the retracted posture;

[Explanation of symbols]

2 chassis 3 optical head 4 Head transfer means 4a screw shaft 4b pinion 5 rotation drive 9 rollers (conveying means) 13, 14 Slide plate (posture setting member) 31, 32, 33, 34 2nd gear 60 control means 61 Posture control member 62 two-stage gear 62a small gear 62b gear 63 planetary gears 64a fixed rack 64b movable rack 65 axis 66,67 Guide groove 66a Evacuation guideway 66b Operation guideway 66c Waiting guide way 66d Lock guideway 66e Introduction guide way 67a Transmission guideway 67b Evacuation guideway 68a, 69a1 guide protrusion 69 drive arm 70 switching means 71 Swing arm 72 drive gear 73,74 switching gear 75 Lock protrusion 80 Lock control board 80a Lock recess 80b Control piece 82a guide protrusion 90 switching arm 91 Input arm 92 Output arm 92a pressing protrusion 100 rack control bar Ga power transmission unit

Claims (7)

[Claims] 1. A rotary drive unit (5) for rotationally driving a disk (D), a head (3) facing the disk (D), and the head (3) along a recording surface of the disk (D). In a disk device provided with a head transfer means (4) for moving the head and a control means (60) for controlling an operation mode, a first transfer means for transmitting the power of a motor (M) to the head transfer means (4). A switching means (70) for setting a switching state and a second switching state for transmitting to the control means (60) is provided, and the head (3) transferred by the head transfer means (4) is A disk device characterized in that the switching means (70) is switched from the first switching state to the second switching state by a moving force when moving to a predetermined position. 2. The switching means (70) is switched to the second switching state by a moving force when the head (3) moves to a position beyond the operating range of a reproducing or recording operation. 1. The disk device according to 1. 3. A drive gear (72) which is rotated by the power of the motor (M) in the switching means (70).
And a switching gear (7) that meshes with the drive gear (72).
3, 74) and a swing arm (71) for moving the switching gear between the first switching state and the second switching state.
The disk device described. 4. The disk device according to claim 1, further comprising a lock means for locking the switching means (70) in a first switching state and a second switching state. 5. The switching means (70) is provided with a lock control member (80) for locking the swing arm (71) in a first switching state and a second switching state, and the lock control member (80) is provided. A control member (80) is operated by the control means (60) to move the swing arm (7).
4. The disk device according to claim 3, wherein 1) is held in the second switching state. 6. The control means (60) according to claim 1, wherein the transport means (9) for transporting the disc is switched between a state of applying a transport force to the disc and a state of separating from the disc. Disk device. 7. Clamping means (6) for pressing the disk against the rotary drive (5) by the control means (60).
6. The disk device according to claim 1, wherein the posture of the disk device is switched.