JPH11134760A - Detector for disk device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a detector for disk device capable of surely detecting even the disk having a transparent part on the outer circumference. SOLUTION: A 1st detecting hole 26a and a 2nd detecting hole 26b are provided for constituting an optical detecting means, and shutters 141a, 142a are operated by a 1st detecting pin 143 and a 2nd detecting pin 145 which are moved by being pushed with the outer circumference of the disk D, then the detecting holes 26a, 26b are blocked by these shutters. Therefore, even though the disk having the transparent or semi-transparent outer circumference is inserted to make the detection impossible with the detecting holes 26a, 26b, the detection output is obtained by the operation of the shutters 141a, 142a.

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 one or a plurality of various disks such as a CD (compact disk), a DVD (digital versatile disk), a CD-ROM, and a CD-RAM are inserted. In particular, the present invention relates to a detection device capable of detecting insertion of a disk and positioning of the disk in the device.

[0002]

2. Description of the Related Art In a disk device in which disks are inserted one by one, disks are inserted one by one from insertion / ejection ports opened in a housing. Usually, an optical detection means for detecting the edge of the inserted disk is provided, and when the detection means detects the disk, a conveyance means such as a conveyance roller is started, and the conveyance means starts the disc. It is drawn into the device. Further, the disc diameter may be determined based on the detection output of the detection means.

[0003] Even in a disk drive, it is necessary to detect the position of a moving disk. For example, detection means for detecting that the disc inserted from the insertion slot and conveyed by the conveyance means is positioned on the turntable of the disc drive unit, or a disc pulled out from a magazine or a disc storage unit that does not use a magazine. A detecting means for detecting whether or not the disk drive is positioned on the turntable is required.

[0004]

In the detecting means for detecting the insertion of a disk from the insertion / ejection port, if the outer peripheral portion of the disk is opaque, the opaque outer peripheral portion passes through the detecting means, thereby detecting the disk. The light of the means is blocked and the detection output of the detection means is switched immediately. However, some discs have a transparent area or a translucent area provided in a certain range on the outer peripheral portion. When such a disc is inserted, even if the outer peripheral edge of the disc passes the detecting means, there is a disadvantage that the light from the detecting means is not blocked and the detection output cannot be switched. If the transport means is started in response to switching of the detection output of the detection means, a problem occurs in that the transport means does not start even when a disc is inserted, and when the diameter of the disc is determined by the detection means, However, there is a problem that the discrimination of the diameter is erroneous when a disk having a transparent outer peripheral portion is inserted.

[0005] When an optical type is used as a detecting means for detecting whether or not the disk is securely positioned on the disk drive unit in the apparatus, a disk having a transparent or translucent outer peripheral portion is used in the same manner as described above. In this case, the detection of the positioning of the disk is erroneous, and the center of the disk cannot be reliably positioned in the disk drive.

[0006] Further, in the optical detection means, variations in the diameter of the detection hole, variations in the light receiving sensitivity of the light receiving element, variations in the light emission amount of the light emitting element, and variations in the positional relationship between the light emitting element, the light receiving element and the detection hole. Is inevitable. In this type of detection means, a threshold value is set on a circuit so that the detection output is switched when the amount of light received by the light receiving element becomes equal to or less than a predetermined value. When the detection hole is blocked by the edge of the detection light, the relationship between the area ratio of the light blocking region and the timing of switching the detection output may not always be constant.
As a result, when attempting to position the moving disk based on the detection output, the positioning accuracy is reduced.

If the edge of the disk does not completely close the detection hole, a reliable detection output may not be obtained. Therefore, it is necessary to increase the amount of movement of the disk until the disk is switched, and it is difficult to reliably detect the position of the disk in a narrow space.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned conventional problems, and an object of the present invention is to provide a detection device for a disk device capable of reliably detecting even a disk having a transparent portion on the outer periphery.

Another object of the present invention is to provide a detection apparatus for a disk drive in which the detection output can be switched immediately when the disk moves only a short distance, and the influence of variations in light receiving ability on the positioning of the disk can be reduced. It is an object.

[0010]

According to the present invention, there is provided a detecting device for a disk drive provided in a path for loading a disk into a disk drive section (II), wherein the disk (D) introduced into the loading path is provided. Detecting means (26a) whose detection output is switched by passing an edge in the carrying-in direction (X1 direction) and blocking light, and an edge in the carrying-in direction passing through the detecting means (26a). A detection member (143) that is moved by being pushed by the edge later, and a shutter (141a) that is moved in a direction in which light of the detection means (26a) is blocked in accordance with the movement of the detection member (143) are provided. It is characterized by being carried out.

The shutter is provided on a common detection plate or the like together with the detection member (detection protrusion), or a moving force of the detecting member is converted into a moving force of the shutter via a link mechanism or the like.

According to the present invention, when the outer peripheral portion of the disk is opaque, the detection output is switched by the disk blocking the detecting means. However, when the outer peripheral portion of the disc is transparent or translucent, the detecting member is pushed by the edge of the disc, whereby the shutter operates and the detecting means is blocked, so that the detection output is switched.

Therefore, regardless of the state of the outer peripheral portion of the disk, the detection output can always be switched by the edge of the disk.

In the above, the detecting means (26a, 2
6b) and the detection members (143, 145) are arranged in pairs at intervals shorter than the diameter of the disk (D), and the pair of detection members are moved toward each other by a biasing member (147). Preferably, it is energized.

By providing a pair of detecting means and a detecting member, it is possible to distinguish between a large-diameter disk and a small-diameter disk.

Further, a transport means (III) for transporting a disk in the direction of the disk drive section (II) is provided between the detection means (26a) and the disk drive section (II). It is possible to adopt a structure in which control means for starting the transport means (III) is provided based on the detection output in which the light of 26a) is blocked.

That is, by providing the detection means and the detection member, it is possible to obtain a trigger signal for starting the disk transport means.

However, it is also possible to determine the diameter of the disc by using the detection means and the detection member, and to start the transport means based on the detection output of another detection means.

Further, the detecting means of the disc apparatus of the present invention is a detecting apparatus for detecting that the disk (D) being conveyed by the conveying means (III) has reached a predetermined position in the apparatus. Detecting means (26a) for switching the detection output by blocking the light by passing an edge in the moving direction (X2 direction) of the disk (D) being conveyed in III), and an edge in the moving direction; A detection member (143) which is moved by being pushed by the edge before or during the passage of the portion through the detection means (26a);
And a shutter (141a) that is moved in a direction of blocking the light of the detection means (26a) with the movement of the detection member (143).

Also in this case, the detecting means (26a, 26
b) and the detecting members (143, 145) are arranged in a pair at intervals shorter than the diameter of the disk (D), and the pair of detecting members are moved in a direction approaching each other by the urging member (147). Preferably, it is energized.

By switching the detection output of the detection means,
It is possible to detect that the disk has reached the disk storage portion, or to detect that the disk has reached the transfer position for transporting the disk.
When the light of (a) is interrupted, the transport means (III) is stopped and the control means for stopping the disc (D) is provided, so that the disc can be reliably sent to the disc drive unit. Can be positioned.

In this case, when the control means stops the transport means (III), the disk (D) being transported by the transport means (III) can be clamped to the disk drive section (II). It will be positioned at an appropriate position.

Further, a disk storage section (I) is provided in the apparatus, and the disk in the disk storage section (I) is pulled out by the transport means (III) and clamped onto the disk drive section (II). The present invention is applicable to those transported to possible positions.

With the above arrangement, the disk pulled out from the disk storage can be reliably positioned on the disk drive. Further, it can also be used as a detecting device for positioning a disk inserted from the insertion / ejection port and carried in by the transport means to the disk drive unit.

Further, with respect to the direction (X2 direction) in which the disk (D) moves, the shutter (141a) is moved in a direction (Y1 or Y2 direction) perpendicular to the direction (X2 direction).
The area (A) shielded by the disk (D) and the area (B) shielded by the shutter (141a) are increased together in the detection means (26a). Preferably, a relative position between the detection member (143) and the shutter (141a) is determined.

In such a structure, the detection output of the detecting means is switched by a slight movement after the disk has reached the detecting means. Therefore, the positioning can be detected by a slight movement of the disk in a narrow space.

Further, even if there is a variation in the detection ability of the detecting means, the influence of the variation on the detection accuracy is reduced.

Even if the outer peripheral portion is a transparent or translucent disk, the disk can be accurately positioned on a disk drive or the like.

[0029]

BEST MODE FOR CARRYING OUT THE INVENTION

(Overall Structure) FIG. 1 is a perspective view showing a main part of a disk device having a disk selecting function according to the present invention, and FIGS. 2, 3, 4 and 5 are side views showing the disk device in different operating states. . As shown in FIG. 2, a housing 1 of this disk device
Is a so-called 1DIN size and is usually embedded in a console panel in a vehicle such as an automobile, and has a front surface 1a.
Appear almost on the same plane as the console panel. An insertion / ejection opening 2 for inserting and ejecting the discs D one by one at a position slightly above the center of the front surface 1a.
Is open. The disk D loaded in the disk device is a compact disk (CD), a digital versatile disk (DVD), or the like.

A mechanism unit is housed in the housing 1, and in this mechanism unit, a lower chassis 3 and an upper chassis 4 are combined. The lower chassis 3 and the upper chassis 4 are formed by sheet metal processing in which a metal plate is bent, and the lower chassis 3 and the upper chassis 4 are fixed to each other with screws or the like in an assembled state.

As shown in FIG. 2, the front surface 1a of the casing 1
Is provided with a shutter guide plate 5.
The shutter guide plate 5 includes side plates 3b, 3 of the lower chassis.
d is rotatably supported. When the shutter guide plate 5 is oriented vertically, the insertion / ejection port 2 is closed from the inside. Therefore, at this time, there is no possibility that the disc D or the foreign matter is inserted from the insertion / ejection port 2 by mistake.

The insertion / ejection port 2 is closed by the shutter / guide plate 5 in the standby state shown in FIG. 2 or the disc selecting operation, the loading operation after the disc selection shown in FIG.
The disk shown in FIG. 4 is being driven. And as shown in FIG.
When inserting or ejecting a disc, the shutter
The guide plate 5 rotates. At this time, the insertion / ejection port 2 is opened, and the shutter / guide plate 5 is inserted / ejected.
It is in a horizontal position inside and below the discharge port 2 and functions as a guide member for guiding the disk D inserted or discharged through the insertion / discharge port 2 below.

A disk storage unit I is provided in a lower portion of the lower chassis 3 opposite to the portion where the insertion / ejection port 2 is formed. A disk support (a support plate or a support tray) for supporting individual disks is provided in the disk storage unit I.
6 are provided (four in the example of the figure). A base end of each support 6 is provided with a holding bracket 7 formed of a metal plate.
Is held in.

As shown in detail in the side view of FIG. 6, the holding bracket 7 is provided with an upper bent portion 7a and a lower bent portion 7b, and the four bent portions 7a and 7b are provided between the upper and lower bent portions 7a and 7b. The base end of the support 6 is held. The upper bent portion 7a and the lower bent portion 7b are inserted from the bottom plate 3a of the lower chassis 3 to guide shafts 9, 9 fixed vertically in the Z-axis direction, and along the guide shafts 9, 9,
The holding bracket 7 can move up and down in the Z direction (up and down).

As shown in FIG. 6, support pieces 7c, 7c are bent on both sides of the holding bracket 7, and four support grooves 7d extending in the X direction are formed in the support pieces 7c, 7c. Have been. Support shafts 8 are fixed to both sides of the base end of each support 6, and the support shafts 8 are held between the end of the holding groove 7 d on the X1 side and the guide shaft 9. In addition, each support 6 can swing (rotate) up and down around the support shaft 8 at the base end.

As shown in FIG. 1, a semicircular concave portion 6a is formed on the upper surface of each of the support members 6, and one disk D is placed on each concave portion 6a of each support member 6. You. A pair of restricting pieces 6b, 6 are provided on the base end side of the upper surface of the support body 6.
b are formed integrally, and the disc D installed in the recess 6a is regulated from above by the regulating pieces 6b, 6b, and is held so that the disc D does not rise from the recess 6a. . In addition, a relief hole 6d having a home base shape is formed in each support body 6,
Further, a triangular regulating hole 6c is opened at the center of the disk D where the hole Da is installed.

The lower chassis 3 is provided with a disk drive unit II. This disk drive unit I
In FIG. 1, as shown in FIGS. 1 and 2, a drive chassis 11 extending in the width direction (Y direction) is provided. As shown in FIG.
A spindle motor Ms that rotationally drives the turntable 12 is mounted. As shown in FIG. 1, an optical head 13 is provided on the drive chassis 11, and the optical head 13 is moved by a sled motor Mh mounted on the drive chassis 11 in a direction (Y direction) orthogonal to the direction of transport of the disk D. ).

The optical head 13 is provided with an objective lens 13a facing the recording surface of the disk D.
A light-emitting element for emitting reading light, a light-receiving element for receiving return light from the disk, and optical components are housed in 3. A support frame 14 is provided above the drive chassis 11, and a clamp support 15 is supported in the support frame 14 so as to be vertically movable. A clamper 16 is rotatably supported by the clamp support 15. (See FIG. 2).

The disk drive unit II is mounted on a moving base 17. As shown in FIG. 1, a pair of left and right sliding shafts 18, 18 are provided on both sides of the moving base 17.
Has been fixed. On one side plate 3b of the lower chassis 3, there are formed elongated guide holes 3c, 3c extending in the X direction, and the sliding shafts 18, 18 are connected to the elongated guide holes 3c, 3c.
c. The other side plate 3d of the lower chassis 3
Similarly, guide elongated holes 3c, 3c are formed, and both sides of the moving base 17 in the Y direction are guided by guide elongated holes 3c, 3c formed in the side plates 3b and 3d, respectively. Further, as shown in FIGS. 19 and 21, a pair of shafts 17 a and 17 b
Is fixed, and X1 is fixed on the bottom plate 3a of the lower chassis 3.
-The shafts 17a and 17b are inserted into the elongated holes formed in the X2 direction.
Are slidably guided. By these guide mechanisms, the moving base 17 and the disk drive unit II
Are movable in the X1-X2 directions.

The moving positions of the moving base 17 and the disk drive unit II are, as shown in FIG. 2, a standby position closest to the insertion / ejection port 2 side, and as shown in FIGS. There are two driving positions, which are moved to the back side of the apparatus from the position, and reciprocate between them. In a region immediately inside the insertion / ejection port 2, the upper chassis 4 is provided with a transport means III.

The transport means III includes transport rollers 21
Is provided. The transport roller 21 is a roller shaft 2
It is formed of a material having a large friction coefficient such as rubber fixed to the outer periphery of 1a. As shown in FIG.
One roller shaft 21a is held by a roller holder 22,
The disk D can be elastically pressed through the force of a spring. As shown in FIG. 2, the roller shaft 21a protruding from both sides of the roller holder 22 is supported by an arm 23a provided at the end on the Y1 side, and is also supported by the arm 23b at the end on the Y2 side. Each arm 23a and 23
The base ends of the supporting shafts 24a and 24b correspond to the side plates 4a and 4b bent to both sides of the upper chassis 4, respectively.
And is rotatably supported via the.

As shown in FIG. 1, a gear train 25 for transmitting rotational power from the support shaft 24b to the roller shaft 21a is provided on the arm 23b. On the lower surface of the upper chassis 4 is mounted a transport motor (not shown) that applies rotational power to a gear 25a fixed to the support shaft 24b. The transport roller 21 is rotationally driven in both forward and reverse directions by the rotational force of the transport motor. The arm 23
Starting from the position shown in FIG. 2, a and 23b are rotated clockwise in the figure to reach the position shown in FIG. As a result, as shown in FIG. 2, the transport roller 21 is in a standby position located above the disk drive unit II which waits at the aforementioned position, and as shown in FIG. 3 and FIG. The position moves between three positions, that is, the retracted position shown in FIG. 4 which is slightly rotated counterclockwise from the transfer position.

In the transport means III, the transport rollers 21
And an opposing pad 26 for holding the disk D therebetween. The facing pad 26 is formed of a resin material having a small friction coefficient. As shown in FIG. 4, the facing pad 26 is formed by a pair of links 28 by shafts 27a and 27b.
a and 28b and said links 28a and 28b
Is rotatably supported by shafts 29a and 29b on a support (not shown) provided on the upper chassis 4. Therefore, the opposed pad 26 moves in a substantially parallel posture. This movement is interlocked with the rotation of the arms 23a and 23b supporting the transport roller 21, and the opposing pad 26 is moved to the standby position in FIG. 2, the transport position shown in FIGS. It moves between three positions with the indicated retract position.

(Overall Operation) Hereinafter, the overall operation of the disk device will be described with reference to FIGS. 2, 3, 4 and 5. In this disk device, the insertion / ejection port 2
Then, the discs D are inserted one by one and ejected one by one. Therefore, the disc transport position is always
This is the height position where the discharge port 2 is formed. In FIG.
The transport surface of the disk D is indicated by L.

FIG. 2 shows an operation of selecting the disk D in a state where the disk D is held in each support 6 of the disk storage unit I. In this disk device, in the disk storage section I, the holding bracket 7 holding the base end of each support 6 is guided by the guide shafts 9, 9 and Z1-
The disk is moved up and down in the Z2 direction, thereby selecting a disk. That is, by moving up and down in the Z1-Z2 direction, when the disk D to be selected reaches the height position of the transport surface L, the up and down movement of the holding bracket 7 stops.

In this selection operation or the like, as shown in FIG. 2, the regulating member 31 is moved upward so that the disk D held by the support 6 does not come off the holder 6 in the X2 direction.
When the holding member 7 is moved up and down, the regulating member 32 is fixed to the lower side, and the regulating member 6 is formed in the regulating hole 6c (see FIG. 1) formed in the support 6 and the center hole Da of the disk D. 31 and 32 enter and disk D is X
It is regulated to escape in two directions. However, there is a vertical gap between the regulating members 31 and 32,
The disk D reaching the height position of the transport surface L is located within the space between the regulating members 31 and 32, and the regulating members 31 and 32
Out of regulation. Therefore, as shown in FIG. 1, in the disc selecting operation, separate discs D or at least discs D which reach positions deviating from the restricting members 31 and 32 do not come out in the X2 direction. The member 33 is provided to face the outer edge of the disk D.

In the selection operation shown in FIG.
And the disk drive unit II mounted thereon,
The side opposite to the disk storage section I, namely, the insertion / ejection port 2
It is in the standby position that has moved inside. Also, the transport means I
Roller 21 and Opposing Pad 26 Constituting II
Are both located at a standby position overlapping the disk drive unit II.

In this disk device, a disk D such as a CD or DVD having a diameter of 12 cm is stored in the disk storage section I, and the disk drive unit II and the transport means III are overlapped with each other. Disk D
In a standby position that does not interfere with Therefore, for example, 1DI
In the compact structure configured in the N-sized casing 1, when the disc D is moved up and down to perform the selecting operation, the movement of each disc D is not hindered by the disc drive unit II and the transport means III. During the selection operation shown in FIG. 2, the shutter / guide plate 5 is in a vertical position, and the insertion / ejection port 2 is closed from the inside. Therefore, at this time, the new disk D is erroneously inserted into the insertion / ejection port 2
It is not inserted from.

Hereinafter, the disk D of the third stage (iii) from the top of the disks stored in the disk storage unit I will be described.
The operation for selecting is described. As described above, the holding bracket 7 is moved up and down, and when the third stage (iii) disk D from the top reaches the transport surface L, the holding bracket 7 is stopped. Here, the two support members, that is, the support member 6 in the uppermost stage (i) and the support member 6 in the second stage (ii), are lifted up using the support shaft 8 as a fulcrum, using a selection means described later. The lower-stage (iv) support 6 is also rotated downward with the support shaft 8 as a fulcrum, and a space (space) is formed above and below the third-stage (iii) support 6 holding the disc D to be selected. I do. At this time, the third stage (iii) of the support 6 has a substantially horizontal posture at a height position substantially coincident with the transport surface L.

Next, as shown in FIG.
And the disk drive unit II supported by the
It is moved in one direction to the drive position. At this time, the turntable 12 passes below the third-stage substantially horizontal disk D, and the clamper 16 passes above.

After or simultaneously with the movement of the movable base 17 to the drive position, the arms 23a and 23b of the transport means III are rotated clockwise about the support shafts 24a and 24b, and the transport rollers 21 is moved to the transport position. At the same time, the opposing pad 26 also moves in parallel and moves to the transport position. At this time, since the end of the third stage (D) on the X2 side of the disk D slightly protrudes from the inside of the disk drive unit II in the X2 direction, the end of the third stage of the disk D on the X2 side is , Between the transport roller 21 and the opposing pad 26.

When the transport roller 21 is driven to rotate by the power of the transport motor provided in the upper chassis 4 via the gear train 25 shown in FIG. Is the transport roller 21
It is pulled out in the X2 direction by the rotational force of. When the center hole Da of the disk D substantially coincides with the rotation center of the turntable 12, the transport roller 21 stops.

Next, as shown in FIG. 4, the support 6 supporting the third-stage (iii) disk D, which has been in a substantially horizontal posture, largely rotates downward, and the support 6 Step (i
ii) Move away from the lower surface of the disk D. At about the same time, the arms 23a and 23b of the transport means III rotate counterclockwise, and the transport roller 21 moves to the retracted position separated from the disk D downward, and the opposing pad 26 rises in synchronization with this. However, this is also away from the disk D and becomes the retracted position. Then, in the disk drive unit II, the clamper 16 descends, and the center hole Da of the third stage disk D in the free state is clamped by the turntable 12 and the clamper 16.

The clamped disk D is driven to rotate by the power of a spindle motor Ms. In the disk drive unit II, the optical head 13 is moved in the Y direction (a direction orthogonal to the direction in which the disk is transported) by the thread motor Mh, and a reading operation or a writing operation on the recording surface of the disk D is performed.

As shown in FIG. 4, when the disc D is being driven by being clamped by the turntable 12 and the clamper 16, the support 6 which has been supporting the disc D is lowered. X1 of the driving disk D
The side edge (a) faces the escape hole 6d of the support 6 that has been lowered. Therefore, the edge (a) of the disk D that is being rotationally driven does not contact the support 6.

When the drive of the disk D is completed, the state returns to the state shown in FIG. That is, the clamper 16 is raised and the clamp of the disk D is released. In addition, the third stage (iii) of the support 6 rotates counterclockwise from the state of FIG. 4 to the position of FIG.
Almost simultaneously, the transport roller 21 and the opposing pad 26 reach the transport position. Then, the disk D is sent in the X1 direction by the rotational force of the transport roller 21 and is held by the third-stage support 6.

Thereafter, when another disk D is selected, the disk drive unit II returns to the standby position as shown in FIG.
Also return to the standby position and. In this state, the holding bracket 7 and each support 6 move up and down, a new disc selecting operation is performed, and the next selected disc D
Is substantially coincident with the transport surface L, the disk D is pulled out, clamped and driven in the same manner as described above.

Next, the operation of inserting or ejecting a disc is as follows.
This is performed in the state shown in FIG. At this time, the state of each support 6, the position of the disk drive unit II, and the state of the transport unit III are exactly the same as those in FIG. 3. However, the shutter / guide plate 5, which has closed the insertion / ejection port 2 until then, is rotated clockwise to be in a horizontal posture as shown in FIG.

In this disk device, the transport roller 21 and the opposing pad 26 when transporting the disk are positioned at the transport position inside the device so that the X2 side end of the disk D held in the disk storage unit I can be held. And move on. As a result, the distance between the transport roller 21 and the insertion / ejection port 2 increases. When the shutter guide plate 5 is in the parallel posture, the newly inserted disk D is guided by the shutter guide plate 5, and the X1 side edge of the disk D enters the lower side of the transport roller 21. Things can be prevented. In the state shown in FIG. 5, a gap is also provided between the transport roller 21 and the support 6 to which the disk is to be fed. In this part, the disk drive unit II is located, and the turntable 12 and the clamper 16 It functions as a guide to guide. Therefore, when a new disk is inserted, the disk is reliably fed onto the support 6.

When a new disk D is inserted, first, by the selection operation shown in FIG.
(The support 6 for holding the disk) on the transport surface L
Is performed, and thereafter, the state is switched to the state shown in FIG.
This disk passes through the disk drive unit II with the conveying force of the conveying roller 21 and is held on the empty support 6. At this time, without moving the disk to the support 6, the center hole Da of the disk D is held between the turntable 12 and the clamper 16 of the disk drive unit II, and the state is shifted to the state of FIG. After completing the recording operation, the disk D can be ejected by returning to the state of FIG.

When a new disc D is inserted after the new disc D is held by the support 6, the state is shifted to the state shown in FIG.
To match. Then, the state is shifted to the state shown in FIG. 5 and the next disk D is held by the support 6. When ejecting the disc, the holding bracket 7 is moved up and down in the state shown in FIG. 2 so that the disc D to be ejected coincides with the transport surface L. Thereafter, the state shifts to the state shown in FIG. Thereafter, when another disk is to be ejected, the state is shifted to the state of FIG. 2, and after selecting the disk to be ejected, the state is shifted to the state of FIG.

Next, the detailed structure and operation of each unit will be described with reference to FIGS. (Structure and Operation of Disk Storage Unit I) FIGS. 6 to 9
10 is a side view showing an operation of elevating the holding bracket 7 and the support 6, FIG. 10 and FIG. 11 are side views showing an operation of dividing the support 6, and FIG. FIG. 2 is a view showing the structure of a selection driving means IV for causing the selection driving means IV, as viewed in the direction of arrow XII in FIG. 1.

As shown in FIG. 12, the selection driving means I
In V, a lifting drive plate 41 is provided. Guide lift holes 41a, 41a extending in the Y direction
Are formed, and the guide elongated holes 41a, 41a are
The lower chassis 3 is slidable in the Y direction by being inserted through guide shafts 42 fixed to the rear bent piece 3 e of the lower chassis 3. When a disc is selected, the power of the motor Mz is transmitted to the rack formed on the bent portion 41b at the lower end of the lifting drive plate 41 via the reduction gear train 40 in the power switching device VI described below shown in FIG. Is done.
With this driving force, the lifting drive plate 41 is driven in the Y1-Y2 direction. The lift drive plate 41 has lift drive holes 43,
A sliding shaft 44 fixed to the holding bracket 7 is inserted into each of the lifting drive holes 43.

Each of the elevation drive holes 43, 43 is formed to be inclined and has a horizontal stepped portion 43a, 43b, 43.
c, 43d are formed. Y1- of the lifting drive plate 41
By the moving force in the Y2 direction, the slide shafts 44 slide in the respective elevation drive holes 43, 43, whereby the holding bracket 7 and the support 6 are moved up and down. As shown in FIG. 12, the lifting drive plate 41 moves in the Y2 direction, and the sliding shaft 44,
When 44 is located at the uppermost stepped portion 43d, the holding bracket 7 and each support 6 rise most. At this time, as shown in FIG. 6, the lowermost (iv) support 6 coincides with the height of the transport surface L.

When the lifting drive plate 41 is driven in the Y1 direction from this position, and the sliding shafts 44, 44 stop at the step portions 43c, 43c, the holding bracket 7 and the support 6 are slightly lowered, and the third step from the top is performed. (Iii) The support 6 coincides with the height of the transport surface L. Further, the sliding shafts 44, 44
When it is located at the position 43b, as shown in FIG.
When the lower brackets 4 and 44 are located at the lowermost steps 43a and 43a, as shown in FIG. 9, the holding bracket 7 moves to the lowest position, and the uppermost (i) support member 6 moves to the height of the transport surface L. Matches.

As shown in FIGS. 1 and 6, each support 6
Selection shafts 45 are fixedly provided on both left and right sides of the camera. A support piece 7e is formed by bending the side of the lower bent portion 7b of the holding bracket 7,
A base end of a lifting arm 47 is rotatably supported by a support shaft 46 fixed to the support piece 7e. The lifting arm 47 is integrally formed with a lifting piece 47a facing the lower surface of the lowermost (iv) support 6. A sliding shaft 49 is fixed to the upper end of the lifting arm 47.

A pair of leaf springs 48, 48 are supported on the upper end of the upper bent portion 7a of the holding bracket 7, and the uppermost (i) support 6 is lowered by the leaf springs 48, 48. Has been suppressed. As shown in FIG. 1, the upper chassis 4 is provided with a switching drive unit V. The driving force of the switching drive unit V causes the selective division operation of each support 6, the movement of the disk drive unit II, and the clamping operation. Then, the switching operation of the transport means III is performed.

In the switching drive unit V, the upper chassis 4
A disk cam 51 is rotatably supported on a shaft 52 on the lower surface of the disk. A switching motor Md is supported on the upper chassis 4, and the power of the motor Md is transmitted to a gear formed on the outer periphery of the disk cam 51 via a reduction gear train (not shown), and The cam 51 is driven in both forward and reverse directions. A plurality of cam holes (or cam grooves) are formed in the disc cam 51, and the moving positions of the respective members are controlled by the cam holes.

As shown in FIG. 1, a switching arm 53 is provided on the lower surface of the upper chassis 4. The switching arm 53 is rotatably supported on a shaft 54 as a fulcrum. A follower pin 55 is fixed to the arm 53 a of the switching arm 53, and the follower pin 55 is slidably inserted into a cam hole formed in the disc cam 51. A connecting pin 56 is provided on the other arm 53 b of the switching arm 53, and is connected to a first switching plate 57 by the connecting pin 56. The first switching plate 57 is slidably supported in the X1-X2 directions in the upper chassis 4, and when the disc cam 51 rotates,
The first switching plate 57 is driven in the X1 direction and the X2 direction via the switching arm 53.

On the lower surface of the first switching plate 57, a pair of selecting members 58 are fixed. 6 to 11 show the relationship between the selection member 58 and the disk storage unit I. As shown in FIG. 6, the selection member 58 is provided with a posture control cam 59 formed by a long groove. The attitude control cam 59 includes a control section 59a that is slightly inclined with respect to the vertical line (Z axis), and a relief section 59b that is inclined at a larger angle continuously from the lower end thereof.
A slide shaft 49 fixed to the upper end of the lifting arm 47 is slidably inserted into the attitude control cam 59.

During the disc selecting operation shown in FIG. 2, the first switching plate 57 and the selecting member 58 are stopped at the standby position (a) shown in FIG. In the disc selecting operation, the holding bracket 7 moves up and down along the guide shaft 9 in the Z1-Z2 direction with the selecting member 58 stopped at the standby position (a). At this time, as shown in FIGS. 6 to 9, the sliding shaft 49 provided on the lifting arm 47 always slides up and down in the control section 59a of the attitude control cam 59. Therefore, the lifting arm 47 is in a state of rising in the Z1 direction, and the lowermost (iv) support 6 is lifted by the lifting piece 47a formed integrally with the lifting arm 47. Further, since the uppermost support 6 is pressed downward by the leaf springs 48, 48, the four supports 6 are brought into close contact with each other.

The support shaft 8 serving as the pivot of each support 6 is Z
The support members 6 are arranged at a constant height interval h in the direction, while the thickness of each support 6 is smaller than the interval h of the support shaft 8. Therefore, as shown in FIGS. 2 and 6, the distance between the support members 6 on the X2 side is smaller than the distance h on the base end side, and thus the disk D is held by all the support members 6. Thus, the discs D are densely packed so that the distance between the edges on the X2 side is reduced.

Here, the selection driving means IV shown in FIG.
The height dimension between the step portions of the elevation drive holes 43 formed in the elevation drive plate 41 coincides with the interval h between the support shafts 8.
The support 6 is sequentially raised and lowered by the same height as the interval h between the support shafts 8. On the other hand, since the distance between the edges on the X2 side of the disk D held on the support 6 is narrowed,
When the holding bracket 7 is vertically moved up and down by a pitch equal to the interval h in order to select a disk of any of the supports 6, the disk held by the selected support 6 is placed on the transport surface L. It moves to the selected position in a state of being inclined. As a result, as shown in FIG. 3, when the disk drive unit II is moved in the X1 direction, the edge on the X1 side of the selected disk D easily hits the turntable 12, or the selection member 5
There arises a problem that the selection cam 45 (see FIG. 6) formed at the position 8 cannot reliably hold the selection shaft 45.

Therefore, as shown in FIGS. 6 to 9, the control portion 59a of the attitude control cam 59 is formed so that the upper end side is inclined to the X1 side, whereby the selected support member 6 Is controlled so that it can be set to a posture close to horizontal. That is, as shown in FIG. 6, when the holding bracket 7 moves to the uppermost position and the disk D held on the lowermost (iv) support 6 is selected, the slide fixed to the upper end of the lifting arm 47 is selected. Since the driving shaft 49 moves to the uppermost part of the inclined control part 59a of the attitude control cam 59,
The lifting arm 47 is in a posture rotated slightly counterclockwise from a completely vertical posture. At this time, the lifting piece 47
The lowermost support 6 lifted by a is in a substantially horizontal posture, and its height position substantially coincides with the transport surface L.

When the support 6 at the third level from the top is selected, the holding bracket 7 is at the position shown in FIG. 7, but this is more than the state shown in FIG.
It is a position lowered by a minute. Therefore, the lifting arm 47
The sliding shaft 49 fixed to the upper end of the lower part of the control part 59a of the attitude control cam 59 slightly lowers than in FIG. Due to the inclination of the control section 59a, the lifting arm 47 which has been lowered to the position shown in FIG. 7 is slightly rotated clockwise from the posture shown in FIG. 6, and the lowermost (iv) support 6 is slightly lifted by the lifting piece 47a. Can be As a result, the third-stage support 6 from the top assumes a substantially horizontal posture, and coincides with the transport surface L.

FIG. 8 shows a case where the second stage (ii) of the support 6 is selected from above, and the holding bracket 7 is slightly lowered from the position shown in FIG. FIG. 9 shows when the uppermost (i) support 6 is selected, and the holding bracket 7 is further lowered than in FIG. Following this downward movement, the lifting arm 4
7 gradually rotates clockwise according to the inclination angle of the control section 59a of the attitude control cam 59. As a result, the entire supporting body 6 is lifted by the lifting piece 47a so that the supporting body 6 at the second stage (ii) from the top in FIG. The support 6 is further lifted by the lifting piece 47a, and the uppermost (i) support 6 assumes a substantially horizontal posture at the height position of the transport surface L.

As described above, in FIG. 6, the lowermost (iv) support members 6 are substantially parallel, and the support members 6 above the lowermost (iv) are all inclined in such a manner that the X2 side is lowered. , FIG. 9
As shown in (2), as the holding bracket 7 descends, the supporting members 6 are gradually lifted by the lifting pieces 47a, and the supporting members 6 to be selected respectively become horizontal. From the above, as shown in FIG.
Even if the distance between the edges on the X2 side of the disks D held in the X2 direction is smaller than the distance h between the support shafts 8 and the disks D are inclined at the ends on the X2 side, any one of the supports may be used. When 6 is selected, the selected support 6 is always in a horizontal posture and can face the transport surface L.

As shown in FIG. 6, the selection member 58 has a selection cam 61 formed by a long groove.
The selection cam 61 includes a horizontal portion 61a extending in the X direction,
And an escape inclined portion 61b descending in the X1 direction. Further, at the end on the X1 side of the horizontal portion 61a,
A wedge-shaped upper split cam 63 and a lower split cam 62 are formed. As described above, when the holding bracket 7 moves up and down to select the support 6 and the disc D,
As shown in FIGS. 6 to 9, the selected support 6 has a substantially horizontal posture at the position of the transfer surface L, so that the selection shaft 45 fixed to the selected support 6 also has the height of the transfer surface L. And the selection shaft 45 faces the horizontal portion 61a of the selection cam 61 at the same height on the X1 side. Therefore, when the selection member 58 at the standby position (a) shown in FIG. 6 moves in the X1 direction, the selection shaft 45 of the selected support 6 is moved to the horizontal portion 61a.
Is securely held within.

FIGS. 10 and 11 show, as an example, the support dividing operation in the case of selecting the support 6 at the third stage (iii) from the top. As shown in FIG.
After the support 6 at the third stage (iii) from the top is moved to the height position of the transport surface L by the lifting / lowering operation, the switching arm 53 is rotated by the rotation of the disc cam 51 of the switching drive unit V shown in FIG.
Moves in the counterclockwise direction, and the first switching plate 57 is moved in the X1 direction. Therefore, the selection member 58 fixed to the first switching plate 57 moves to the selection position (b) shown in FIG. 10, and the selection shaft 45 provided on the selected support 6 moves the selection cam 61 horizontally. It is held by the portion 61a. The selection shaft 45 provided on the second stage (ii) of the support 6 located above it is lifted by the upper split cam 63, and provided on the lowermost (iv) support 6 below it. The selected shaft 45 is rotated downward by the lower split cam 62. At this time, the lowermost (iv) support 6
Is supported by a lifting piece 47a integral with the lifting arm 47.

As shown in FIG. 10, when the selection member 58 stops at the selection position (b), the selected third stage (ii)
Spaces are formed above and below the support 6 of i) and the disk D held by the support 6. This is the state of FIG. At this time, the moving base 17 and the disk drive unit II
Moves in the X1 direction, the selected disk D of the third stage (iii) is positioned between the turntable 12 and the clamper 16 of the disk drive unit II, and the arms 23a and 23b of the transport means III. Rotates clockwise to the transport position, and the opposing pad 26 descends to the transport position. Then, the disk D sandwiched between the transport roller 21 and the opposing pad 26 is pulled out in the X2 direction,
The center hole Da of the disk D matches the center of the turntable 12.

Thereafter, the rotation of the disc cam 51 shown in FIG. 1 drives the first switching plate 57 further in the X1 direction, and the selection member 58 reaches the division position (c) shown in FIG. 11 and stops. At this time, the lifting arm 47 is further rotated in the counterclockwise direction by the attitude control cam 59, and accordingly, the lowermost (iv) support 6 is largely rotated in the clockwise direction. Further, the selection shaft 45 provided on the third-stage (iii) support body 6 on which the selected disk D is mounted is guided into the escape inclined portion 61b of the selection cam 61, and the support body 6 is moved clockwise. The support 6 at the third stage (iii) separates from the lower surface of the disk D by pivoting greatly. This is the driving state shown in FIG. 4, and the disk D in the free state is clamped on the turntable 12.

(Structure and Operation of Power Switching Device VI and Opening / Closing Operation of Shutter Guide Plate 5) FIG. 13 is a plan view showing the structure of the power switching device VI provided on the bottom plate 3a of the lower chassis 3, and FIG. FIG. 15 is an enlarged plan view of the power switching device VI, and FIG. 15 shows an opening and closing operation of the shutter guide plate 5, and is an enlarged view taken along the arrow XV in FIG. The power switching device VI transmits the power of the motor Mz provided on the bottom plate 3a of the lower chassis 3 to the lifting drive plate 41, and switches and transmits the power of the motor Mz to the shutter opening / closing mechanism VII. It is. Switching between transmitting the power of the motor Mz to the lifting drive plate 41 and transmitting the power to the shutter opening / closing mechanism VII depends on whether the disk drive unit II is moving to the standby position or the drive position. I can decide.

FIGS. 13 and 18 are plan views when the disk drive unit II is at the standby position, and FIG. 20 is a plan view when the disk drive unit II is moved to the drive position. As shown in FIG. 1, the moving base 17 on which the disk drive unit II is mounted is movable on the lower chassis 3 in the X1-X2 direction.
A drive engagement pin 73 is fixed to the moving base 17. As shown in FIG. 1, on the lower surface of the upper chassis 4,
A third switching plate 72 is provided, and the third switching plate 72 is also provided with a X
It is driven in the 1-X2 direction. A drive groove 72a is formed on the side of the third switching plate 72, and the drive engagement pin 73 is always fitted into the drive groove 72a. Therefore, when the third switching plate 72 is driven in the X1-X2 direction by the cam holes (or cam grooves) formed in the disc cam 51, the moving base 17 is moved by the third switching plate 72 to X1. The disk drive unit II is driven in the -X2 direction, thereby being mounted on the moving base 17.
Moves between the standby position shown in FIGS. 2, 13 and 18, and the driving position shown in FIGS. 3 to 5 and FIG.

As shown in FIG. 13, a shaft 102 is fixed to the bottom plate 3 a of the lower chassis 3.
, A driving gear 101 is rotatably supported. The driving gear 101 includes a small diameter gear 101a and a large diameter gear 101b.
Are integrally formed. The reduction gear train 40
Then, the pinion gear 4 fixed to the output shaft of the motor Mz
Power is input from 0a. The final stage gear 40b meshes with the small diameter gear 101a of the drive gear 101, and the reduced rotation of the gear 40b is transmitted to the drive gear 101.

The shaft 1 on which the driving gear 101 is supported
02, a switching arm 103 is rotatably supported.
An idler gear 105 is rotatably supported on a shaft 102 fixed to the switching arm 103. The switching arm 103 is rotatable around a shaft 104. During this rotation, the idler gear 105 always rotates the driving gear 101.
Are engaged.

As shown in FIG. 13, when the switching arm 103 rotates clockwise, the idler gear 105 moves to the first position.
Of the driven gear 106a. This driven gear 106a
The small-diameter gear 106b formed integrally with the
8a. The lifting gear 108a is connected to the bottom plate 3
The drive pinion gear 108b, which is rotatably supported by a shaft 107 fixed to the shaft 107a, is integral with the lift gear 108a.
It is engaged with the rack 41c formed in the one bent portion 41b.

FIG. 14 shows a state in which the switching arm 103 has turned counterclockwise. Switching arm 103
Is rotated counterclockwise, the idler gear 105 meshes with the second driven gear 111. The second driven gear 111 is rotatably supported by a shaft 112 fixed to the bottom plate 3a. Further, a brake member or a stopper 109 is fixed to the switching arm 103. The brake member or the stopper 109 is attached to the tip of the leaf spring by a first
Of the driven gear 106a are formed integrally with each other. As shown in FIG. 14, the switching arm 103 rotates counterclockwise, and the idler gear 105
Is engaged with the second driven gear 111, the projection 109a fits into the teeth of the first driven gear 106a,
The free rotation of the driven gear 106a is prevented.

The shutter opening / closing mechanism VII is driven by the second driven gear 111. This shutter opening / closing mechanism V
In II, the shaft 1 fixed to the bottom plate 3a of the lower chassis 3
A drive arm 115 is rotatably supported on the drive arm 16.
A long hole 115 a is formed at one end of the drive arm 115, and the drive shaft 11 fixed to the second driven gear 111 is formed.
3 is inserted into the elongated hole 115a. An engagement pin 117 is fixed to the other end of the drive arm 115.

As shown in FIGS. 13 and 15, a shutter opening / closing lever 121 is attached to the side plate 3d of the lower chassis 3.
The shutter opening / closing lever 121 is slidably supported in the 1-X2 direction, and is biased in the X1 direction by a biasing spring 122. An engaging piece 121a is bent by the shutter opening / closing lever 121, and the engaging piece 121a is pressed against the engaging pin 117 by receiving the urging force of the urging spring 122.

As shown in FIG.
5 is separated from the second driven gear 111 and the drive arm 11
When the shutter 5 rotates counterclockwise, the shutter opening / closing lever 121 is moved in the X1 direction by the urging force of the urging spring 122. Also, as shown in FIG.
When the idler gear 105 meshes with the second driven gear 111, and the second driven gear 111 rotates substantially 180 °, the drive arm 115 rotates clockwise. At this time, the engagement piece 121a is pushed in the X2 direction by the engagement pin 117 provided on the drive arm 115, and the shutter opening / closing lever 121 is opposed to the urging force of the urging spring 122 so that X
Driven in two directions.

As shown in FIG. 15, the shutter opening / closing mechanism VI
In I, an elongated hole 121b is formed at the end of the shutter opening / closing lever 121 on the X2 side. The lower chassis 3
The shutter driving member 119 is connected to the side plate 3d by the shaft 118.
Are rotatably supported by the shutter driving member 1.
A pin 123 fixed to 19 is inserted into the elongated hole 121b. Further, a drive hole 119a is formed in the shutter drive member 119, and the drive hole 119a has
A closed holding groove 119b and an open holding groove 119c are formed. The shutter guide plate 5 is rotatably supported by side plates 3b and 3d of the lower chassis 3 via a support shaft 5b. A pin 5c is fixed to a bent portion 5a formed on the shutter guide plate 5, and the pin 5c is inserted into the drive hole 119a.

As shown by the solid line in FIG. 15, when the shutter opening / closing lever 121 is moved in the X1 direction, the shutter driving member 119 is rotated counterclockwise, and the pin 5c is held in the closing holding groove 119b. Thus, the shutter / guide plate 5 is in the vertical position, and the insertion / ejection port 2 is closed. When the shutter opening / closing lever 121 moves in the X2 direction,
The shutter driving member 119 is rotated clockwise, the pin 5c is held in the open holding groove 119c, the shutter guide plate 5 is in a parallel posture, and the insertion / ejection port 2 is opened.

In order to switch the switching arm 103,
A restraining member 126 is provided on the bottom plate 3 a of the lower chassis 3. The restraining member 126 has elongated holes 126a, 1
26a is formed and the guide shaft 12 fixed to the bottom plate 3a
The elongated holes 126a, 126a are inserted through the holes 7, 127, and the restraining member 126 is slidably supported in the Y1-Y2 direction. A driving lever 128 is attached to the restraining member 126.
Are superimposed. The drive lever 128 has a long hole 128
a, 128a are formed, and shafts 129, 129 fixed to the restraining member 126 are inserted into the elongated holes 128a, 128a. A connection spring 131 is hung between the restraining member 126 and the drive lever 128, and the restraining member 1
26 and the drive lever 128 are urged and connected in a direction to attract each other.

Further, an urging spring 132 is hung between the drive lever 128 and the bottom plate 3a. The urging spring 132 urges the restraining member 126 in the Y1 direction and connects with the restraining member 126. The driving lever 128 is also urged in the Y1 direction. A restricting hole 126b is formed at the end of the restricting member 126 on the Y1 side. The first restraining portion 12 is provided at one end of the restraining hole 126b.
6c is formed, and a second restraining portion 126d is formed at the other end. A constraint pin 125 fixed to the tip of the switching arm 103 is inserted into the constraint hole 126b.

Further, a switching member 133 is provided on the bottom plate 3a.
34, the switching member 1 is rotatably supported.
33 is fixed to the drive lever 1.
28 is engaged with an engaging piece 128b formed on the engaging member 28. A drive arm 133a is formed integrally with the switching member 133. The drive arm 133a is provided by a shaft 17a provided on the lower surface of the movable base 17 shown in FIG.
Is given a driving force. That is, the shaft 17a provided on the moving base 17 of the disk drive unit II is
13A, when the disk drive unit II moves in the X2 direction and is in the standby position, as shown in FIG. 13, the shaft 17a provided on the moving base 17 is driven by the drive arm. 133a, the switching member 133
Is rotated counterclockwise.

As shown in FIG. 13, when the disk drive unit II moves to the standby position and the switching member 133 is rotated counterclockwise, the drive lever 128 is pulled by the engagement pin 135 in the Y2 direction. Connecting spring 131
The restraining member 126 is pulled in the Y2 direction via the. At this time, the constraint pin 125 is held by the first constraint portion 126c of the constraint hole 126b formed in the constraint member 126. Therefore, the switching arm 103 is held while being rotated clockwise, and the idler gear 105 supported by the switching arm 103 meshes with the first driven gear 106a.

Therefore, the rotation output of the motor Mz is output from the reduction gear train 40 to the drive gear 101 and the idler gear 1.
05 to the first driven gear 106a. The rotational force of the first driven gear 106a is transmitted to the lifting gear 108a, and the driving pinion gear 1 integrated with the lifting gear 108a
08b to the rack 41c. In this power switching device VI, as long as the disk drive unit II is at the standby position, the switching arm 103 allows the idler gear 10
5 continues to be restrained while meshing with the first driven gear 106a. Therefore, the rotational force of the motor Mz in both the forward and reverse directions is transmitted from the idler gear 105 to the rack 41c via the first driven gear 106a and the drive pinion gear 108b, and the lifting drive plate 41 is driven in the Y1-Y2 direction. As a result, the lift drive hole 4 of the lift drive plate 41 shown in FIG.
3, the disk storage unit I is driven up and down to select a disk.

Next, when the moving base 17 and the disk drive unit II move in the X1 direction as shown in FIG. 20 and reach the driving position, as shown in FIG. Moves away from the drive arm 133a of the switching member 133 and slides on the sliding side 133b.
Therefore, the drive lever 128 is moved in the Y1 direction by the urging spring 132, and the restraining member 126 is moved together with the Y1 direction.
Move in the direction. As a result, the restraining pin 125 provided on the switching arm 103 is moved to the restraining hole 126 of the restraining member 126.
The idler gear 105 is engaged with the second driven gear 111, as shown in FIG.

Also at this time, since the idler gear 105 is held in a state of being meshed with the second driven gear 111, the rotational force of the motor Mz in both the forward and reverse directions is transmitted to the second gear via the drive gear 101 and the idler gear 105. To the driven gear 111. The rotation of the second driven gear 111 causes the drive arm 115 to rotate, whereby the shutter opening / closing lever 121 can be driven in any of the X1-X2 directions. The shutter drive member 119 is driven by the shutter opening / closing lever 121, and the shutter guide plate 5 is opened / closed.

At this time, as shown in FIG. 14, the brake member or stopper 10
9 is fitted to the first driven gear 106a, the rotation of the first driven gear 106a is prevented, and when the shutter guide plate 5 is opened and closed, the first driven gear 106a is erroneously attached to the first driven gear 106a. The power is transmitted by the
Power can be prevented from being transmitted to the vehicle. Further, as shown in FIG. 13, the idler gear 105 has a first driven gear 106a.
The brake member or the stopper for stopping the second driven gear 111 when meshing with the switching arm 103
May be provided.

Note that, as shown in FIG.
When 05 is engaged with the first driven gear 106a, the restraining member 126 is urged in the Y2 direction by the elastic force of the connection spring 131, so that the idler gear 105 and the first driven gear 106a Elastically engaged. Therefore, even if the teeth hit at the time of switching,
The subsequent rotation can immediately shift to the meshing state. As shown in FIG. 14, when the idler gear 105 is engaged with the second driven gear 111,
Numeral 6 receives an urging force in the Y1 direction by the urging spring 132, and the idler gear 105 and the second driven gear 11
1 has an elastic meshing force.

As described above, as shown in FIGS. 2 and 13, when the disk drive unit II is at the standby position, the rotational force of the motor Mz in both the forward and reverse directions is applied to the lifting drive plate 41 by the power switching device VI. When the disk storage unit I is moved in both the up and down directions, the disk selecting operation can be performed. Even when the disk drive unit II reaches the drive position, the rotational force of the motor Mz in both the forward and reverse directions is changed to the shutter opening / closing mechanism VII. Can be transmitted to Therefore, in the states shown in FIGS. 3 to 5, the shutter guide plate 5 can be freely opened and closed. In this embodiment, the shutter guide plate 5 is controlled to be opened only when a disc insertion / ejection operation is performed as shown in FIG.

(Structure and Operation of Transport Means III) FIG.
6 (A) and 6 (B) show the structure of the conveying means III and its switching section, and are partial side views as seen in the direction of the arrow XVI in FIG. As shown in FIG. 16, arc-shaped holes 3f and 3g are formed at the front end of the right side plate 4a of the upper chassis 4 on the X2 side. The arc hole 3f is formed along an arc of a predetermined radius centered on the support shafts 24a and 24b of the arms 23a and 23b of the transfer means III. The shaft 65 provided on the one arm 23a is connected to the arc hole 3
It is movably inserted into f. 3g of one arc hole
Are formed along an arc locus having a predetermined radius around a shaft 29b supporting a link 28b provided on the transport means III. FIG. 16A shows only the arm 23a and the transport roller 21 of the transport unit III, and FIG. 16B shows only the opposing pad 26 and the links 28a and 28b.

As shown in FIG. 1, in the switching drive section V, a second switching plate 71 is slidably supported in the X1-X2 direction, and the second switching plate 71 is a disc cam. The cam holes 51 are driven in the X1-X2 directions. As shown in FIG. 16, the switching plate 71 has a driving slot 71 a having a U-shape and a driving slot 7 having a U-shape.
1b is formed, and the shaft 65 provided on the arm 23a passes through the drive elongated hole 71a and passes through the circular arc hole 3f.
The link 28b and the opposing pad 26
Is passed through the drive slot 71b and inserted into the arc hole 3g.

In FIGS. 16A and 16B, the second switching plate 71 is moving in the X2 direction, and the driving long holes 71a and 71b of the second switching plate 71 allow the shaft 65 and the shaft 27b to move.
Are lifted to the upper ends of the arc holes 3f and 3g, respectively. Accordingly, the arms 23a and 23b rotate upward, and as shown in FIG. 2, the transport roller 21 is located at the standby position above the disk drive unit II, and the opposing pad 26 is also lifted up as shown in FIG. Is located at the standby position shown in FIG. When shifting to the disk drawing operation shown in FIG. 3, the second switching plate 71 is driven by the disk cam 51 in the X1 direction to reach the position shown in FIG.

At this time, the drive long holes 71a and 71b formed in the second switching plate 71 allow the shaft 65 and the shaft 27b to move in the X direction.
It is pulled in one direction. Then, the shaft 65 and the shaft 27b move along the arc holes 3f and 3g. As a result, the transport roller 21 reaches the transport position, and the opposing pad 26 also
It is moved in parallel by a and 28b to reach the transport position. The transport roller 21 reaching the transport position is pressed against the disk D by the force of a spring, and the disk D is nipped between the transport roller 21 and the opposing pad 26. When the disk drive state shown in FIG. 4 is reached, the second switching plate 71 is slightly returned from the position shown in FIG.
With the rotation of the arm 23b and the arm 23b, the transport roller 21 moves to the retreat position, and at this time, the opposing pad 26 slightly rises to reach the retreat position.

FIG. 19 is a side view of FIG. 18, FIG. 21 is a side view of FIG. 20, and FIG.
(A), (B), and (C) are side views of each element when the disk drive unit II is in the unclamped state, and FIG.
FIGS. 4B and 4C are side views of respective elements showing a state where the disk is clamped by the disk drive unit II. 1 and 2 show a drive chassis 11 on which a turntable 12, a spindle motor Ms, an optical head 13 and the like are mounted.
However, as shown in FIG. 22 (A), support shafts 81 are fixed to the lower end of the drive chassis 11, and elastic shafts such as an oil damper provided on the bottom of the movable base 17 are provided. The support shafts 81, 8 are provided on the support members 82, 82.
1 is supported, and the drive chassis 11 is elastically supported on the moving base 17.

As shown in FIG. 1, a clamp support 15 is provided on the lower surface of the support frame 14 which covers the upper part of the disk drive unit II, and as shown in FIG.
5, a clamper 16 is supported. FIG. 22 (C)
Although a side view of the clamp support 15 is shown, the clamper 16 is rotatably supported by the clamp support 15 and can be elastically pressed toward the turntable 12 by a leaf spring 83. FIG. 22 (A)
As shown in (B), sliding shafts 84, 84 are fixed to the side surfaces of the clamp support 15, and the sliding shafts 8 are fixed.
Reference numerals 4 and 84 are slidably inserted into elongated holes 11a and 11a formed in the side plate of the drive chassis 11 and extending in the Z direction. Therefore, the clamp support 15 is mounted on the drive chassis 1.
1 is supported to be able to move up and down.

Inside the side plate of the drive chassis 11, a clamp drive member 85 is supported so as to be movable only in the X1-X2 direction. A clamp spring 86 is hung between the clamp drive member 85 and a spring hook portion 11b at the upper end of the drive chassis 11, and the clamp drive member 85 is constantly urged in the X2 direction by the clamp spring 86. I have. As shown in FIG. 22B, the clamp driving member 8
5 has inclined drive holes 85a, 85a formed therein.
The sliding shafts 84 provided on the clamp support 15
Are inserted into the inclined drive holes 85a, 85a. Therefore, the clamp support 15 is moved up and down by the moving force of the clamp driving member 85 in the X1-X2 direction.

Further, support shafts 87, 87 are fixed to the bottom of the movable base 17, and a lock member 91 provided on the bottom plate of the movable base 17 is fixed to the support shafts 87, 87.
And is slidably supported by X1-X2 on the movable base 17. A lock groove 91a and a free hole 91b continuous with the lock groove 91a are formed in a side plate of the lock member 91, and a V-shaped pressing portion 91 is formed on the left side of the figure.
c is formed. A lock pin 88 is provided on a side surface of the drive chassis 11, and the lock pin 88 is inserted into the lock groove 91a and the free hole 91b. Further, as shown in FIG. 22B, a pin 89 is fixed to the clamp driving member 85.
Can be pressed by the pressing portion 91c.

A drive arm 93 is rotatably supported by a support shaft 92 inside the side plate of the movable base 17. The lower end of the drive arm 93 is connected to the lock member 91 by a connection pin 94, and the rotation of the drive arm 93 drives the lock member 91 in the X1-X2 direction. A drive pin 95 is provided at an upper end of the drive arm 93. As shown in FIGS. 1 and 19, a guide hole 3h extending in the X1-X2 direction is formed in the side plate 3b of the lower chassis 3, and the drive pin 95 is slidably inserted into the guide hole 3h. ing. Guide hole 3
At the end on the X1 side of h, an arc-shaped rotating hole 3i extending downward is formed continuously.

As shown in FIGS. 1 and 19, a transmission arm 96 is rotatably supported by a shaft 97 at an end on the X1 side of the side plate 3b of the lower chassis 3. A drive groove 96 a is formed at the tip of one arm of the transmission arm 96, and the drive groove 96 a can be fitted with a drive pin 95 provided on the drive arm 93. A transmission groove 96b is formed at the tip of the other arm of the transmission arm 96. As shown in FIG. 1 and FIG. 18, a drive slider 98 is attached to an edge of the upper chassis 4 on the Y2 side.
The driving slider 98 is slidably supported in the −X2 direction. The driving slider 98 is connected to the tip of the arm 53 c of the switching arm 53 by a connecting pin 100. A transmission pin 99 is fixed to the bent piece 98a of the drive slider 98, and the transmission pin 99 is always fitted in the transmission groove 96b of the transmission arm 96.

As shown in FIGS. 18 and 19, when the moving base 17 and the disk drive unit II are moving to the standby position, the drive pin 95 provided on the drive arm 93 is located in the guide hole 3h. I have. At this time, FIG.
22A, the driving arm 93 is rotated clockwise, and the connecting pin 94 is used to lock the lock member 9.
1 has been moved in the X1 direction. Therefore, the lock pin 88 fixed to the drive chassis 11 is restrained at the X2 side end of the lock groove 91 a formed in the lock member 91, and the drive chassis 11 is restrained without moving on the movable base 17. You. Further, the pin 89 fixed to the clamp driving member 85 is pressed in the X1 direction by the pressing portion 91c formed on the lock member 91, and the clamp driving member 85 moves in the X1 direction with respect to the drive chassis 11. I have. Therefore, the sliding shafts 84, 84 are formed by the inclined driving holes 85a, 85a formed in the clamp driving member 85.
Is lifted in the Z1 direction, and as shown in FIG. 22C, the clamp support 15 is lifted, and the clamper 16 supported by the clamp support 15 is separated upward from the turntable 12.

In FIG. 18, the switching arm 53 is rotated clockwise, and at this time, the switching arm 5 is rotated.
3, the first switching plate 57 (see FIG. 1) is moving in the X2 direction, and the selection member 58 fixed to the first switching plate 57 is in the standby position (see FIG. 6 to FIG. 9). a). This is the state of FIG. Since the switching arm 53 is rotating clockwise, the driving slider 98 connected to the arm 53c of the switching arm 53 is moved in the X1 direction, and as shown in FIG. Has been moved to.

When shifting to the disk drive state, the switching arm 53 is driven counterclockwise by the disk cam 51 as shown in FIG.
Then, the selection member 58 reaches the position shown in FIG. 10 and the upper and lower supports 6 of the support 6 holding the selected disk D are divided vertically as shown in FIG. At this time, the drive slider 98 connected to the switching arm 53
Is moved to the position shown in FIGS.
The transmission arm 96 supported by the side plate 3b is rotated clockwise.

In the state shown in FIG. 3, when the moving base 17 and the disk drive unit II are moved in the X1 direction,
21. The drive pin 95 of the drive arm 93 provided on the moving base 17 moves to the end of the guide hole 3h on the X1 side, and as shown in FIG.
The drive pin 95 fits into the drive groove 96a of the transmission arm 96 as shown in FIG. When shifting to the disk drive state, the switching arm 53 further rotates counterclockwise from the posture shown in FIG. 20, whereby the first switching plate 57
When driven in one direction, the selection member 58 fixed to the first switching plate 57 moves to the division position (c) shown in FIG. The support 6 of iii) rotates downward.

At this time, by the rotation of the switching arm 53 in the counterclockwise direction, the drive slider 98 is driven in the X2 direction, and the transmission arm 96 is rotated in the clockwise direction as shown by the broken line in FIG. As a result, the drive pin 95 provided on the drive arm 93 is moved downward in the rotation hole 3i, and the drive arm 93 is rotated counterclockwise. When the drive arm 93 is rotated counterclockwise,
As shown in FIG. 23A, the lock member 91 is driven on the movable base 17 in the X2 direction by the drive arm 93. Accordingly, the lock pin 88 provided on the drive chassis 11 comes out of the lock groove 91a formed on the lock member 91 and is located in the free hole 91b, and the pressing portion 91c provided on the lock member 91 is provided.
Moves away from the pin 89. Therefore, the drive chassis 11 is in a free state, and is in an elastic support state on the movable base 17 by the elastic support members 82, 82 such as an oil damper.

When the pressing portion 91c further moves away from the pin 89 in the X2 direction, the clamp driving member 85 to which the pin 89 is fixed is driven in the X2 direction by the clamp spring 86. At this time, the inclined supporting holes 85a, 85a formed in the clamp driving member 85 make the clamp support 15
Is lowered, and the center hole Da of the selected disc D is clamped by the clamper 16 supported by the clamp supporter 15 and the turntable 12, as shown in FIG. 23C. Therefore, in the driving state shown in FIG. 4, the driving chassis 11 is supported by the elastic support members 82, 82. For example, in the case of a vehicle, the disk is moved by the turntable 12 in a state where the vehicle body vibration does not adversely affect the driving chassis 11. D
Is driven, and reading or reproduction is performed by the optical head 13.

Next, as shown in FIG.
7, a regulating member 33 is supported. As shown in FIG. 18, an arm 33a is formed integrally with the regulating member 33, and the base end of the arm 33a is
3b, the movable base 17 is rotatably supported on the Y1 side of the bottom plate. A guide hole 3j is formed in the bottom plate 3a of the lower chassis 3, and
The guide pin 33c extending downward from the guide hole 3j
Is inserted inside. Therefore, as shown in FIGS. 1 and 18, the moving base 17 and the disk drive unit I
When I is at the standby position, the arm 33a
Is rotated clockwise, the regulating member 33 faces the outer peripheral portion of the disc D, and the disc D supported by each support 6 as described above is prevented from coming off in the X2 direction.

On the other hand, when the moving base 17 and the disk drive unit II move in the X1 direction and move to the driving position, as shown in FIG. 20, the guide pin 33c is supported while being guided by the guide hole 3j. Since the shaft 33b moves in the X1 direction, the arm 33a rotates counterclockwise on the moving base 17, the regulating member 33 moves to the side of the disk D, and the disk D supported by the support 6 is moved. Can be pulled out in the X2 direction.

(Structure of Detecting Device VIII and Each Detecting Operation) As described above, the disk transport means III is composed of the transport roller 21 and the opposing pad 26. The opposing pad functions as a detection base, and The detection device VIII is mounted thereon. By this detection device VIII, detection when a disc is inserted, discharge detection, and FIG.
As shown in (1), when the disk selected and pulled out from the disk storage unit I is pulled out to a position where it can be clamped on the turntable 12, the clamp positioning is detected.

FIG. 24 shows the structure of the detection device VIII. The detection device V provided on the opposing pad 26 is shown in FIG.
FIG. 25 is an exploded perspective view showing the arrangement of the components III, FIG. 25 is a plan view thereof, FIG. 26 is a side view taken along the arrow XXVI of FIG. 25, and FIG. FIG. 29 is a partial plan view showing the operation of detecting the clamp positioning of the disk, and FIG. 29 is a partial plan view showing a modification of FIG. As shown in FIG. 24, a first detection hole 26a and a second detection hole 26b are opened in the facing pad 26 serving as a detection base. As shown in FIGS. 24 and 25, the first detection hole 26a and the second detection hole 26b
Are formed at equal distances in the Y1 and Y2 directions with respect to the center line OO in the width direction on the transport surface of the disk D. Further, a third detection hole 26c and a fourth detection hole 26d are opened on the X1 side. The third detection hole 26c is located on the center line OO, and the fourth detection hole 26c
d is located on the Y1 side of the center line OO.

The first and second detection holes 26a and 26b are used for disc insertion detection and clamp positioning detection.
The detection hole 26c is for detecting the stop of the transport motor that drives the transport roller 21, and the fourth detection hole 26d is for detecting the ejection of the disk. On the lower side (Z2) side of the disk transport surface L shown in FIG.
Light receiving elements oppose above a through d, and light emitted from each light emitting element and passing through each detection hole a through d is detected by each light receiving element. In this embodiment, the first and second detection holes 26a and 26a
6b and the light emitting element and the light receiving element which face each other via the detection hole constitute a first detection means and a second detection means. Similarly, the third and fourth detecting means are constituted by the third detecting hole 26c and the fourth detecting hole 26d, and the light emitting element and the light receiving element which face each other through the detecting hole.

On the opposing pad 26, the first detection plate 1
41 and a second detection plate 142 are provided. A first detection pin (detection projection) 143 and a slide pin 144 functioning as a first detection member are fixed to the first detection plate 141. The first detection pin 143 is The sliding pin 144 is inserted into the elongated hole 26e formed, the sliding pin 144 is inserted into the elongated hole 26f also formed in the opposing pad 26, and the first detection plate 141 is slidably supported on the opposing pad 26. I have. A second detection pin (detection protrusion) 145 and a slide pin 146 functioning as a second detection member are fixed to the second detection plate 142, and a long hole 26 g formed in the opposing pad 26 is respectively provided. , 26h. Therefore, the second detection plate 142 is also slidable on the opposing pad 26.

The detection pins 143 and 145 provided on each of the detection plates 141 and 142 extend below the opposing pad 26, respectively, and further, as shown in FIG. Extending. Note that the sliding pins 144 and 146 do not protrude from the lower surface of the opposing pad 26, and thus do not have a length to a position crossing the transport surface L. A convergence spring (coil spring) 147 is hung between the first detection plate 141 and the second detection plate 142, and the first force is applied to the first detection plate 141 by the elastic force.
Of the second detection plate 141 is urged in the Y2 direction.
42 is urged in the Y1 direction, and when no external force acts on the detection pins 143 and 145, as shown in FIG.
The first detection plate 141 and the first detection plate 142 are moving in directions approaching each other.

The first detection plate 141 is integrally formed with a first shutter 141a projecting in the X2 direction, and the second detection plate 142 is also formed with a second shutter 141a projecting in the X2 direction.
2a is formed integrally. As shown in FIG. 25, when the first detection plate 141 and the second detection plate 142 are located close to each other, the first shutter 141a is positioned adjacent to the Y2 side of the first detection hole 26a. The second shutter 142a is located adjacent to the second detection hole 26b on the Y1 side. When the first detection plate 141 moves in the Y1 direction from this position, the first detection hole 26a is closed by the first shutter 141a, and when the second detection plate 142 moves in the Y2 direction, the second shutter 142a Thereby, the second detection hole 26b is closed.

On the opposing pad 26, the first stopper plate 151 is provided at the end on the Y1 side, and the second stopper plate 151 is provided on the Y2 side.
52 are provided. Both stopper plates 151 and 152
Are each formed of a leaf spring material. Support portions 151a and 152 bent downward in a crank shape are provided at ends of the stopper plates 151 and 152 on the X1 side.
a are integrally formed, and the respective support portions 151a and
2 a is fixed on the opposing pad 26. A stopper piece 151b is provided on the Y2 side of the stopper plate 151, and a stopper piece 152b is provided on the Y1 side of the stopper plate 152.
Is bent. As shown in FIG. 25, the stopper pieces 151b and 152b are respectively connected to the first detection plate 141.
And the end of the second detection plate 142 are spaced apart by a distance δ in the Y1 direction and the Y2 direction. This distance δ depends on whether the detection plate 141 and the detection plate 142
When the shutter 141a and the shutter 1
42a is a size that can close the detection hole 26a and the detection hole 26b.

On the Y1 side of the first stopper plate 151, a push-up piece 151c is provided.
A push-up piece 152c is integrally formed on the two side portions. As shown in FIG. 26, both push-up pieces 151c and 1
52c extends downward (Z2 side) so as to cover both end portions of the opposing pad 26 on the Y1 side and the Y2 side.
Extends below. Therefore, the inserted disc passes between the push-up pieces 151c and 152c. When the shutter guide plate 5 rotates in a horizontal posture, as shown by a chain line in FIG. 26, the push-up pieces 151c and 152c are moved upward (Z1 direction) by the tip 5d of the shutter guide plate 5. The stopper plates 151 and 152 are pushed up,
It is bent and deformed upward (Z1 direction) with 1a and 152a as fulcrums. As a result, the stopper piece 151b and the stopper piece 152b move above the respective detection plates 141 and 142, and the first detection plate 141 moves in the Y1 direction.
2 can be moved in the Y2 direction.

Hereinafter, the detection operation will be described. (1) Disc Insertion and Ejection Detection FIG. 5 shows a state in which a disc insertion / ejection operation is performed. The process leading to the insertion / ejection operation will be described. First, as shown in FIG. 2, the shutter / guide plate 5 is in a vertical position, the insertion / ejection opening 2 is closed, and the disk drive unit II is in the standby position. In the state where the transport means III is at the standby position where the disk drive unit II overlaps with the disk drive unit II, the support 6 for inserting the disk in the disk storage unit I or the support on which the disk to be ejected is mounted 6 is selected.

In this selection operation, as shown in FIGS. 6 to 9, the disk storage unit I moves up and down, and the support 6 to be selected stops at a position substantially coincident with the transport surface L. Then, as shown in FIG.
Then, the support 6 vertically adjacent to the selected support 6 is rotated up and down. In the state of FIG. 10, the disk drive unit II moves in the X1 direction,
The driving position is reached, and furthermore, as shown in FIG. 17, the opposing pad 26 constituting the conveying means III moves to the conveying position lowered to the position of the conveying surface, and the conveying roller 21 rotates to move with the opposing pad 26. To move to a transport position where the disc can be held.

In the disc insertion / ejection operation, in the power switching device VI, as shown in FIG. 14, the idler gear 105 meshes with the second driven gear 111, and the power of the lift motor Mz is transferred from the idler gear 105 to the second driven gear 111. Then, the shutter opening / closing lever 121 is driven in the X2 direction via the driving arm 115, and the shutter guide plate 5 is switched to the horizontal position as shown by a chain line in FIG. This is the disc insertion / ejection operation mode shown in FIG.

As described above, the opposing pad 26 of the conveying means III and the conveying roller 21 move to and from the conveying position.
When the shutter guide plate 5 is in the horizontal position, FIG.
As shown in FIG. 5, the push-up piece 151c of the first stopper plate 151 is formed by the tip 5d of the shutter guide plate 5,
The push-up piece 152c of the second stopper plate 152 is pushed up, and each of the stopper plates 151 and 152 is bent upward and deformed, and the stopper piece 151b and the stopper piece 152b are bent.
Move above the first and second detection plates 141 and 142. Accordingly, the first detection plate 141 can move in the Y1 direction and the second detection plate 142 can move in the Y2 direction by a distance δ or more.

In FIG. 25, a state in which a disk (large-diameter disk) D such as a CD having a diameter of 12 cm is inserted from the insertion slot 2 is indicated by a reference numeral (b). When a disk D of 12 cm is inserted from the insertion / ejection port 2 and passes under the opposing pad 26 located at the transport position, the disk D
The first detection hole 2 formed in the opposing pad 26 at the edge of
6a and the second detection hole 26b are shielded, and the first and second detection holes 26b are blocked.
The light output of the light receiving element constituting the detecting means is cut off, and the detection outputs of the first and second detecting means are switched off. At this point, the transport motor starts and the transport rollers 21
Starts to rotate. The first and second detection holes 26a
When the detection output of all the first, second and third detection means is turned off, it is determined that the disk D has been inserted. Then, the transport motor may be started.

When a disc D having a transparent portion or a semi-transparent portion is inserted into the outer peripheral edge of the disc D, the edge of the disc D reaches the position (b) shown in FIG. The first detection hole 26a and the second detection hole 26b
Cannot be optically shielded, and the detection outputs of the first and second detection means cannot be switched off. At this time, when the disc D to be inserted reaches the position (b '), the first detection pin 143 is pushed in the Y1 direction, and the second detection pin 145 is pushed in the Y2 direction. By the first
Of the second detection plate 141 moves in the Y1 direction.
2 moves in the Y2 direction, the first shutter 141a blocks the first detection hole 26a, and the second shutter 14a
By 2a, the second detection hole 26b is shielded, and the detection outputs of the first and second detection means are both switched off.
Therefore, even when a disk having a transparent or translucent outer peripheral edge is inserted, if the disk D is inserted slightly from the position (b ') shown in FIG. The output is switched off and the transport motor starts.

When the transport motor starts, the X of the disk D
The edge on one side is sandwiched between the transport roller 21 and the opposing pad 26, and the rotational force of the transport roller 21 causes the disc D to move
It is drawn in one direction. At this time, since the first detection plate 141 and the second detection plate 142 are not regulated by the stopper plates 151 and 152, the detection pins 143 and the detection pins 145 are pushed apart at the edge of the disk, and the first detection plate is opened. The plate 141 moves in the Y1 direction, the second detection plate 142 moves in the Y2 direction,
When the disc D further moves in the X1 direction and is loaded into the apparatus, the respective detection plates 141 and 142
Due to the convergence force of 47, they return to positions approaching each other as shown in FIG.

As shown in FIG. 5, the disk D transported by the transport rollers 21 is guided on the turntable 12 of the disk drive unit II moving to the drive position, and is selected by the above-described selection operation. It is fed onto the support 6. When the disk D is completely housed inside the support 6, the disk D becomes (C) in FIG.
It becomes the position shown in. At this time, the edge on the X2 side of the disk D is disengaged from above the third detection hole 26c, and the light receiving element located thereon can receive light, and the detection output of the third detection means is turned off. Is switched to ON. That is, in the third detecting means, when the disk is inserted, the state is temporarily switched from ON to OFF, and thereafter, is switched to ON. Therefore, when the state is further switched from ON-OFF to ON, the transport motor is stopped and the transport rollers 21 are stopped.
Is stopped, the disc D is completely stored on the support 6 of the disc storage section I.

Further, when a new disk D is to be inserted onto another empty support 6 of the disk storage section I, the disk drive unit II and the transport means I are moved from the state shown in FIG.
II is returned to the state shown in FIG.
Is moved up and down to select another vacant support 6 and FIG.
To the state of. Then, the above-described insertion operation is repeatedly performed. In the disc ejection operation, first, in the state shown in FIG. 2, the disc storage unit I is moved up and down so that the support 6 on which the disc D to be ejected is set is transported on the transport surface L.
Move to a height that matches. Thereafter, the state is shifted to the state shown in FIG. 5, the disk drive unit II moves to the drive position, the opposing pad 26 and the transport roller 21 move to the transport position, and the disk protrudes from the disk drive unit II in the X2 direction. Is held between the opposing pad 26 and the transport roller 21.

[0138] The transport roller 2 is directly driven by the transport motor.
1 is driven clockwise, and the disc D is conveyed in the X2 direction and ejected from the insertion / ejection port 2. At the time of this discharging operation, the first detection pin 143 and the second detection pin 145 are pushed and spread in the Y1 direction and the Y2 direction by the edge of the disk D, and the detection plates 141 and 142 are moved in the Y1 direction and the Y2 direction, respectively.
The disc D is inserted and ejected 2
, The two detection plates 141 and 142 are returned to the state shown in FIG.

When the disc is ejected, the disc D moves on the fourth detection hole 26d.
The detection output of the fourth detection means composed of d is temporarily turned off.
become. When the edge of the disc D on the X1 side comes off the fourth detection hole 26d, the fourth detection output is turned on.
Is switched to Based on this detection output, the conveying roller 2
1 is stopped. When the transport roller 21 stops, the edge of the disk D on the X1 side is in a state of being sandwiched between the transport roller 21 and the opposing pad 26, and therefore, the disk D partially protrudes from the insertion / ejection port 2. Held in state. Therefore, the disk D is completely ejected by grasping the disk D by hand and pulling it out.

When the disc D is ejected, the detection pins 143 and 145 are pushed out by the disc D, and as the disc D passes, the detection plates 141 and 142 are detected.
Spread in the Y1 direction and the Y2 direction, and when the disc D is ejected from the insertion / ejection port 2, the detection plates 141 and 142 are converged by the converging spring 147. This detection plate 1
The movement of 41 and 142 causes the first detection hole 26a and the second detection hole 26a to move.
Is temporarily closed by the first shutter 141a and the second shutter 142a, and then opened. Therefore, the first and second detection holes 26a and 26b are opened by the shutter plates 141a and 142a, and the first and second detection holes 26a and 26b are opened.
When the second detection means is switched to ON, the transport motor may be stopped to complete the disc ejection operation.

In this disk device, as shown in FIG. 25, the distance between the first detection hole 26a and the second detection hole 26b is longer than 8 cm, and a disk Ds having a diameter of 8 cm such as a single CD is used. The first detection hole 26a and the second detection hole 26b are set so as not to be simultaneously closed by the disc Ds when the disc Ds is inserted through the insertion / ejection port 2. That is, when a small-diameter disk having a diameter of 8 cm is inserted, the first detecting means and the second detecting means
Are not switched at the same time. Therefore, unless the detection outputs of the first detection means and the second detection means are simultaneously switched, the conveyance motor is controlled not to start, whereby the small-diameter disk Ds is erroneously stored in the disk storage section I. Never.

(2) Clamp Positioning Detecting Operation Next, when a disk drive operation for selecting and driving any one of the disks in the disk storing portion I is reached, the positioning of the disk pulled out from the disk storing portion I is detected. Is performed by the detection device VIII. When the disk drive state is reached, in the state shown in FIG. 2, the disk storage unit I is moved up and down, and the selected disk D in the disk storage unit I is moved to a position almost coincident with the transport plane L. Let me do. Thereafter, as shown in FIG. 3, the disk drive unit II moves to the drive position,
Moves to the transfer position, the transfer roller 21 moves to the transfer position, and the disk D set on the selected support 6
Is held between the transport roller 21 and the opposing pad 26.

However, in FIG. 3, unlike the insertion / ejection operation shown in FIG. 5, the shutter / guide plate 5 is in a vertical posture. This switching is performed by driving the second driven gear 111 by the idler gear 105 and moving the shutter opening / closing lever 121 in the X1 direction in the state of FIG. 14 as described above (see FIG. 15). As shown in FIG. 26, when the shutter guide plate 5 is in the vertical position,
The outlet 2 is closed and the shutter guide plate 5 is closed.
Is separated from the push-up pieces 151c and 152c of the first and second stopper plates 151 and 152. Therefore, each of the stopper plates 151 and 152 is lowered in the direction of the opposing pad 26 by its own elastic restoring force, and the stopper piece 151b is opposed to the end of the first detection plate 141 on the Y1 side at an interval δ. And the stopper piece 152b is
Of the detection plate 142 on the Y2 side at an interval δ.

In the state shown in FIG. 3, the transport roller 21 rotates clockwise, and the disk D on the selected support 6 in the disk storage unit I is sandwiched between the transport roller 21 and the opposing pad 26, and is moved in the X2 direction. Drawn to. At this time, when the disk D reaches the position (d) in FIG. 25, the first detection pin 143 is pushed in the Y1 direction by the peripheral portion of the disk D, and the second detection pin 145 is moved in the Y2 direction. Pressed. At this time, when the first detection plate 141 moves by δ in the Y1 direction, the first detection plate 141 hits the stopper piece 151b and does not move any more. When the second detection plate 142 also moves by δ in the Y2 direction, it hits the stopper piece 152b and further moves in the Y2 direction. Stuck. Therefore, the first detection pin 1 at this time
The 43 and the second detection pin 145 function as stoppers for the disk pulled out in the X2 direction from the disk storage unit I. When the disk D is positioned by the detection pins 143 and 145, the center hole of the disk D is positioned almost directly above the turntable 12.

Further, the first detecting plate 141 is shifted by δ by Y1.
When moving in the direction, the first detection hole 26a is closed by the first shutter 141a and the second detection plate 142
Moves in the Y2 direction by δ, the second shutter 1
The second detection hole 26b is closed by 42a. Therefore, the detection output of the first and second detection means is switched to OFF. By this switching of the detection output, the transport motor stops, and the rotation of the transport roller 21 stops.

Thereafter, as shown in FIG. 11, the selecting member 58 moves in the X1 direction, and the selected disk (FIG.
The support 6 supporting the disk (the disk pulled out to the position (d) of FIG. 5) is rotated downward, and further, as shown in FIG. 4, the transport roller 21 is lowered to the retracted position, and the opposing pad 26 is moved. Ascend to the evacuation position. Therefore, the transport roller 21
As a result, the supporting force of the disk is lost, the disk D descends on the turntable 12, and then the clamper 16 descends, and the center hole of the disk D is clamped on the turntable 12. Also, as shown in FIG.
When the opposing pad 26 rises to the retreat position, the first and second detection pins 143 and 145 move upward from the transport surface L, and the detection pins 143 and 145 move away from the outer periphery of the disk D. In this state, the disk D is driven to rotate.

It is to be noted that the disk D pulled out in the X2 direction from the disk storage portion I without the detection plates 141 and 142 is provided.
Of the first detection hole 26a and the second detection hole 2
6b is closed, and the detection output of the first and second detection means is OF
When the mode is switched to F, the transport roller 21 may be stopped, and the center hole of the disk D may be positioned on the turntable 12 by stopping the transport roller 21. However,
Even when the motor is stopped, the transport roller 21 may not be able to stop immediately due to the inertia of the rotor in the motor.
Therefore, the detection plates 14 are formed by the stopper plates 151 and 152.
It is preferable that the movement of the disks 1 and 142 be restricted and the detection pins 143 and 145 stop the disk moving in the X2 direction, since the center of the disk D can be reliably positioned on the turntable 12. Further, a shutter 141 is provided on the first and second detection plates 141 and 142.
a and 142a provide detection holes 26a and 26a.
It is possible to increase the detection accuracy when detecting a disk with b. This will be described with reference to FIG. Although FIG. 28 shows only the first detection hole 26a, the principle is the same for the second detection hole 26b.

Assuming that the shutter 141a (142a) is not provided, only the detection hole 26a is shielded by the edge on the X2 side of the disk D that is pulled out from the disk storage portion I and moves in the X2 direction. Thus, the detection output of the detection means is switched to OFF. However, since the detection means uses a method in which light passing through the detection hole 26a is received by the light receiving element, variation in sensitivity of the light receiving element, variation in the light amount of the light emitting element, or variation in the detection hole 26a.
Due to a variation in the position of the light emitting element facing the light emitting element, the edge of the disc D on the X2 side closes the detection hole 26a, and the detection output from ON to O based on the amount of light received by the light receiving element.
Variation is likely to occur between the switching point to the FF. Therefore, there is a limit to improving the detection accuracy of the position where the first and second detection means are switched off by the disk moving in the X2 direction.

On the other hand, in the embodiment of the present invention, as shown in FIG. 25, when the first detection plate 141 is moved in the Y2 direction and stopped, the Y1 side of the first shutter 141a is stopped. Is located substantially on the Y2 side edge of the detection hole 26a. That is, the edge on the Y1 side of the shutter 141a is located at a position tangent to the detection hole 26a. When the disk D further moves in the X2 direction from the position (d) shown in FIG. 25, the detection hole 26a is formed by the edge of the disk D on the X2 side.
At the same time, the detection pin 143 is pushed in the Y1 direction, the shutter 141a moves in the Y1 direction, and the detection hole 26a is closed. FIG. 28 shows the X of the disk D.
A state in which the edge on the second side is moving in the X2 direction is shown. At this time, a closed area in which the detection hole 26a is closed by the disk D is shown by (A), and a closed area in which the detection hole 26a is closed by the shutter 141a is shown by (B). As the disc D moves from this position in the X2 direction, the closed areas (A) and (B) further expand.

If the shutter 141a is not provided,
The closing ratio of the detection hole 26a is determined only in the region indicated by (A), but when the shutter 141a is provided, the closing ratio is determined in the regions (A) and (B). Therefore, the amount of movement of the disk D in the X2 direction is not
The closing rate of 6a is increased, and the detecting means is switched from ON to OFF with a short movement amount of the disk D. Therefore, even if there is a variation in the switching timing of the detection output of the detection means due to the change in the amount of light received by the light receiving element, the influence on the positioning accuracy of the disk D is reduced. This is the same for the second detection hole 26b.

In the modification shown in FIG. 29, the first shutter 141a 'is located on the Y1 side of the first detection hole 26a, and the edge of the shutter 141a' on the Y2 side is connected to the detection hole 26a.
a is almost coincident with the edge on the Y1 side. And the second
The first shutter 141a 'is formed integrally with the second detection plate 142 by extending the detection plate 142 to the Y1 side. Further, the second shutter 142a 'is also connected to the second detection hole 2a.
6b, the second shutter 1
42a 'is provided integrally with the first detection plate 141.

In FIG. 29, when the disk D moves in the X2 direction and the closed area (A) of the first detection hole 26a is increased by the edge of the disk D, the second detection pin 145 is turned on. The first shutter 141a 'moves in the Y1 direction following the operation of being pushed out in the Y2 direction at the edge of the disk. That is, the detection hole 26 is formed by the shutter 141a '.
a is closed from the side opposite to the closing direction by the disk D. Therefore, the closed areas (A) and (B) of the detection hole 26a when the disk D moves in the X2 direction are shown in FIG.
Therefore, even if the distance of the disk D is short, the detection hole 26a is quickly closed. Therefore, the influence of the variation in the detection accuracy of the detection means on the positioning accuracy of the disk is further reduced. When the shutters 141a and 142a are provided, the shutters 141a and 142a detect the movement of the disk D in the X2 direction even if the outer periphery of the disk D has a transparent portion or a translucent portion. Since the holes 26a and 26b are closed,
It is possible to accurately detect the clamp position of the disk pulled out from the disk storage section I.

In the present invention, when the first detecting means and the second detecting means are switched from ON to OFF, the transport motor is started to transport the disk D into the apparatus, and When the detecting means is turned from ON to OFF and the disc is stored in the disc storing section I, the transport motor is stopped, and the detection output of the fourth detecting means is changed from ON to OFF when the disc is ejected. When the transport motor during the discharging operation is stopped, and the selected disk is pulled out from the disk storage unit I, the detection outputs of the first detection unit and the second detection unit are changed from ON to OFF.
Control means for stopping the transport motor when the mode is switched to, and thereafter shifting to a disk clamping operation. The control means is constituted by a microcomputer and software for performing control processing.

[0154]

As described above, according to the present invention, even if the outer peripheral portion is a transparent or translucent disk, the insertion can be reliably detected, and the start of the transporting means and the disc diameter determination can be performed with high accuracy. Will be able to

Further, according to the present invention, even if the outer peripheral portion is a transparent or translucent disk, it is possible to provide a detection device which can position the disk with high accuracy and can reliably detect the disk with a short moving distance.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a main part of a disk device having a disk selection function according to the present invention;

FIG. 2 is a side view illustrating an operation of selecting a disk by moving a disk storage unit;

FIG. 3 is a side view showing an operation of pulling out a selected disk from a disk storage unit;

FIG. 4 is a side view showing a state where a selected disk is being driven;

FIG. 5 is a side view showing the operation of inserting and ejecting a disc;

FIG. 6 is a partially enlarged side view showing a state where the lowermost support is selected;

FIG. 7 is a partially enlarged side view showing a state where a third-stage support is selected;

FIG. 8 is a partially enlarged side view showing a state where a second-stage support is selected;

FIG. 9 is a partially enlarged side view showing a state where the uppermost support is selected;

FIG. 10 is an enlarged side view showing a state where a third-stage support is selected and an adjacent support is divided;

FIG. 11 is an enlarged side view showing a state where a selected support is separated from a disk;

FIG. 12 is a rear view as viewed in the direction of the arrow XII in FIG. 1 showing the selection driving means;

FIG. 13 is a plan view of a lower chassis showing the power switching device of the present invention;

FIG. 14 is an enlarged plan view of the power switching device.

15 is an enlarged side view taken along the arrow XV in FIG. 1 showing opening and closing of a shutter;

FIGS. 16A and 16B show a switching operation of the transporting means, and are partially enlarged side views as seen in the direction of arrow XVI in FIG. 1;

FIG. 17 is a partially enlarged side view showing a state where the carrying means is switched to a disk carrying position.

FIG. 18 is a plan view showing a state where the disk drive unit is at a standby position.

19 is a side view of FIG. 18,

FIG. 20 is a plan view showing a state where the disk drive unit has moved to a drive position.

21 is a side view of FIG. 20,

FIGS. 22A, 22B, and 22C are side views showing the disk drive unit in an unclamped state;

FIGS. 23A, 23B, and 23C are side views showing the disk drive unit in a clamped state;

FIG. 24 is an exploded perspective view of the disk detection device.

FIG. 25 is a plan view of the detection device,

FIG. 26 is a side view taken along the line XXVI in FIG. 25;

FIG. 27 is a plan view for explaining a disk insertion detecting operation;

FIG. 28 is a partial plan view showing a disk positioning detection operation;

FIG. 29 is a partial plan view showing a modification of FIG. 28;

[Explanation of symbols]

 I Disk storage unit II Disk drive unit III Transport means IV Selection drive means V Switching drive unit VI Power switching device VII Shutter opening / closing mechanism VIII Detector D Disk Mz Motor 1 Housing 2 Insertion / ejection port 3 Lower chassis 4 Upper chassis 5 Shutter Guide plate 5d Tip portion 6 Disk support 7 Holding bracket 8 Support shaft serving as a fulcrum of support 9 Guide shaft 17 Moving base 17a Axis 21 Transport roller 26 Opposing pad (detection base) 26a First detection hole 26b 2nd detection hole 26c 3rd detection hole 26d 4th detection hole 53 switching arm 57 first switching plate 58 selection member 61 selection cam 101 drive gear 103 switching arm 105 idler gear 106a first driven gear 111 second Driven gear 119 shutter drive member 12 1 shutter opening / closing lever 126 restraint member 128 drive lever 133 switching member 141 first detection plate 142 second detection plate 143 first detection pin (first detection member) 145 second detection pin (second detection member) 147 convergence spring (biasing member) 151 first stopper plate 152 second stopper plate

Claims (9)

[Claims] 1. A detecting device provided in a path for loading a disk into a disk drive unit (II), wherein an edge of the disk (D) introduced into the loading path passes in the forward direction (X1 direction). Detecting means (26a) whose detection output is switched by blocking light, and a detecting member (143) which is moved by being pushed by the edge after the front edge in the loading direction passes through the detecting means (26a). ), And the detecting means (26a) as the detecting member (143) moves.
Shutter (141a) that can be moved in a direction that blocks light
And a disk device detection device. 2. A pair of said detecting means (26a, 26b) and a detecting member (143, 145) are respectively arranged at an interval shorter than the diameter of the disk (D), and said pair of detecting members are attached. 2. The detecting device for a disk drive according to claim 1, wherein said detecting device is urged in a direction approaching each other by an urging member. 3. A transport means (III) for transporting a disk in the direction of the disk drive section (II) is provided between the detection means (26a) and the disk drive section (II). 3. The detecting device for a disk device according to claim 1, further comprising control means for starting said transport means (III) based on the detection output in which the light of 26a) is blocked. 4. A detecting device for detecting that a disk (D) being transported by a transport means (III) has reached a predetermined position in the apparatus, wherein the disk (D) transported by the transport means (III) is provided. The detection means (26a) in which the detection output is switched by passing the edge in the movement direction (X2 direction) forward and blocking the light, and the front edge in the movement direction passes through the detection means (26a). A detecting member (143) which is pushed by the edge before or during the passage of the detecting member (143), and is moved in a direction of blocking the light of the detecting means (26a) with the movement of the detecting member (143). And a shutter (141a) that can be provided. 5. A pair of said detecting means (26a, 26b) and a detecting member (143, 145) are arranged at an interval shorter than the diameter of the disk (D), and said pair of detecting members are attached. 5. The detecting device for a disk drive according to claim 4, wherein the urging members are biased in directions approaching each other. 6. A control means for stopping the transport means (III) and stopping the disk (D) when the light of the detection means (26a) is blocked. A detection device for a disk device as described in the above. 7. The transfer means (II) by the control means.
When I) is stopped, the transfer means (III)
The disk (D) transported by the disk drive unit (I)
7. The detection device for a disk device according to claim 6, wherein the detection device is positioned at a position that can be clamped in I). 8. A disk storage section (I) is provided in the apparatus, and a disk in the disk storage section (I) is pulled out by the transport means (III) and clamped onto the disk drive section (II). 8. The sheet is conveyed to a possible position.
A detection device for a disk device as described in the above. 9. The shutter (141a) moves in the direction (X2 direction) with respect to the direction (X2 direction) in which the disc (D) moves.
Direction (Y1 or Y2 direction) perpendicular to the direction (Y1 or Y2 direction), and in the detection means (26a), the area (A) shielded from light by the disk (D) and the area (A) shielded from light by the shutter (141a). 9. The detecting device for a disk device according to claim 4, wherein the relative position between the detecting member (143) and the shutter (141a) is determined so that B) is increased together.