JP2000357355A - Disk device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the damaging of a first and/or second disk caused by the contact of the second with the first, even when the second disk is inserted into a device having the first disk housed therein. SOLUTION: An inlet 21b and an outlet 21c are provided in a front panel 20 attached to a casing 10, and when a second disk D2 is inserted into the inlet 21b of the front panel 20 while a first disk D1 is driven in the casing 10, the first disk DI is ejected from the outlet 21c, and the second disk D2 is driven. Like this, disks are replaceable. An optical sensor 30 is provided to detect the partial insertion of the second disk D2 inserted into the inlet 21b, and based on a detecting signal outputted from this optical sensor 30, the driving of the first disk D1 is stopped.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk drive capable of replacing a disk such as a DVD, and more particularly to a disk drive that prevents damage to a disk due to erroneous insertion of a disk.

[0002]

2. Description of the Related Art In a conventional disk drive of this type, a front panel is mounted on the front of a box-shaped housing. The front panel has an insertion slot for inserting a disk and a discharge slot for discharging a disk. Exits are arranged side by side. A slide member is provided in the housing to hold the disk inserted from the insertion opening and to carry the disk to the rear of the housing. Further, a disk tray for mounting the inserted disk is disposed below the slide member in the housing. A rotary cam is provided at the rear in the housing, and an eject member having one end as a fulcrum is attached and fixed to the rotary cam. A push pin is provided at the other end of the eject member. When the second disk is inserted from the insertion slot with the first disk housed in the disk device, the first disk in the mounted state is pulled backward by the slide member, and Then, the ejecting member, which is actuated by the rotation of the rotating cam, slides while being mounted on the disc tray and is pushed out to the discharge port. Thereafter, the ejection member provided with the push pin is stored in the original position behind the apparatus.

[0003]

In such a conventional disk device, when a second disk is inserted in a state where the first disk is stored in the device, the disk is properly inserted through an insertion opening of a front panel. There is a risk that this disc may be accidentally inserted obliquely, and if the disc is simply inserted, it may interfere with the first disc that has already been inserted and is rotating at a high speed, causing serious damage to the disc. There was a risk of doing it.

[0004] An object of the present invention is to prevent the first and / or second disk from being significantly damaged when the second disk is inserted into the disk device containing the first disk. It was done.

[0005]

Means for Solving the Problems As a first means for solving the above problems, an insertion port and a discharge port are provided on a front panel attached to a housing, and a first disk is driven in the housing. When the second disk is inserted into the insertion opening of the front panel in the state where the second disk is inserted, the first disk is ejected from the ejection opening and the second disk is driven by driving the second disk. And detecting the partial insertion of the disc, and stopping the driving of the first disc based on the detection signal output from the detecting section.

[0006] As a second solution, the detecting section is provided near the insertion slot.

[0007] As a third solution, the detecting section is constituted by an optical sensor in which a light emitting element and a light receiving element are integrated.

[0008]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an embodiment of a disk drive according to the present invention. As shown in FIGS. 1 to 3, in a disk device, a resin front panel 20 into which a disk D is inserted or ejected is provided.
Includes a front plate portion 21 located on the front surface, and a side plate portion 22 extending rearward from a peripheral edge of the front plate portion 21, and a rectangular opening 21 a is formed in the center of the front plate portion 21. I have. Wall portions 2 extending rearward at the upper and lower edge portions of the opening 21a
3a and 23b are provided. The resin door 25 is
A thin bar-shaped base 26 having an inclined portion 26a;
It comprises a pair of rotating shafts 26b provided at both ends of the base 26, and a pressing piece 27 provided between the one rotating shaft 26b and the base 26 and extending downward from the base 26. A coil spring 28 is wound around one rotation shaft 26b, and the door 25 is attached to the side plate portion 22 of the front panel 20 so as to be rotatable about the rotation shaft 26b. The inclined portion 26a of the door 25 is inclined upward from below the opening 21a from the front to the rear of the opening 21a.

As described above, by attaching the door 25 to the opening 21a, the insertion slot 21b located above is
Discharge ports 21c located below are arranged side by side.
1b and an outlet 21c. Door 25
Are pressed by a coil spring 28 in a direction (counterclockwise in FIG. 3) in which the wall 23a on the side of the insertion opening 21b and the inclined portion 26a of the door 25 facing each other are separated. The switch 32 detects whether or not the disk D has been forgotten, as shown in FIG.
5 so as to face the pressing piece 27 of the front panel 20.
Are urged and attached to the side plate portion 22. The front panel 20 includes a plate-shaped bottom plate 12 and
Side plate portions 14 and 15 bent from both sides of bottom plate portion 12
And is attached to the front surface of a U-shaped casing 10 made of a metal plate via a side plate 22.

As shown in FIG. 24, a detecting unit for detecting that the front end (part) of the disk D has been inserted into the front panel 20, that is, an optical sensor 30, has an LED as a light source.
, And a light receiving element 30b such as a phototransistor. The light emitted from the light emitting element 30a is reflected on the surface of the disk D, is received by the light receiving element 30b, and is converted into an electric signal. The optical sensor 30 is shown in FIG.
As shown in FIG. 3 to FIG.
2 is attached to the upper inner wall surface facing the wall portion 23a.

Next, the structure of the disk holding and transporting mechanism will be described. First, as shown in FIG. 4, a rectangular opening hole 13a, 1 formed substantially in the front-rear direction is formed in a ceiling plate 13 made of a metal plate provided with a disk holding / transporting mechanism.
3b are formed, and an elongated guide groove 13c is formed along the inner edge of the opening 13a. Tapered portions 13d and 13e are formed at the rear side edge of the opening 13b by being cut out in a tapered shape, respectively.

As shown in FIGS. 4, 5 and 11, a large gear 115 having a peripheral portion in the form of a gear has a rotating shaft 115a.
And a guide pin 115b projecting from the upper surface. A part of the transmission gear 110 meshes with the large gear 115 at a position exposed outside the ceiling plate 13. The transmission gear 110 includes a rotating shaft 110a and a rotating shaft 1
And a gear portion 110b provided integrally with the gear 10a. The drive motor 99 has a rotating shaft 99a, and a worm gear 101 is fitted on the rotating shaft 99a.
Then, the drive motor 99 is driven through the worm gear 101.
Is transmitted to the transmission gear 110 and the large gear 115.

The transfer arm 120 is formed by press-forming a thin metal plate, and has sliding arms 120a, 12
0b are respectively drilled. The guide pin 115b of the large gear 115 is inserted into the sliding groove 120a.

As shown in FIG. 11, the slide member 70 is formed of a U-shaped thin metal plate, and comprises a base 70a and wide portions 70b integrally extending at both ends thereof.
Elongated guide grooves 71a and 71b are provided at a connecting portion between the outer portion 0a and the wide portion 70b. Slide member 70
One of the wide portions 70b has an arc groove 7 concentrically spread.
2, 73 are formed, and a groove 70c is formed in the other wide portion 70b in parallel with the guide groove 71b. Further, as shown in FIG. 12, below the slide member 70, there are provided support portions 70d and 70e which are slightly protruded. Further, a projection pin (not shown) is provided on the wide portion 70 b of the slide member 70, and the projection pin is attached to the detection switch 16 attached to the side plate 15 of the housing 10.
1 is turned on and off.

A rotary arm 85 rotatable about a support shaft 85a is mounted on the lower surface (back surface) of the slide member 70. A link member 82 is provided on the upper surface side of the ceiling plate 13, and one end of the link member 82 is connected to one end of the rotating arm 85 on the lower surface side via a connection pin P1 in the guide groove 71a. The other end of the link member 82 is connected via a connection pin P2 to one end of a rotary link member 80 that is rotatably supported about a rotary shaft 80a. The other end of the rotary link member 80 is connected to one end of a link arm 81 by a connection pin P3. Link arm 8
A connection pin P4 is attached to the other end of 1 and this connection pin P4 is engaged with the guide groove 71b.

A detection arm 9 is provided on the lower surface of the slide member 70.
0 is rotatably attached, and a connection pin P11 is attached to one end of the detection arm 90. The connection pin P11 is engaged with the guide groove 71b and is movable in the guide groove 71b.
0 rotates. A detection pin P9 is attached to the other end of the detection arm 90, and a regulation pin P10 is attached to the center. The detection pin P9 protrudes in the direction of the housing 10 (toward the bottom plate portion 12) in the same manner as a detection pin P7 attached to a detection arm 95 described later, and can contact the outer peripheral edge of the disk D. The restriction pin P10 is inserted into a groove 70c formed in the slide member 70,
By the urging force of the link arm 81, the detection arm 90 is drawn inward about the support pin P11. The regulating pin P10 is regulated to be located at the lower end in the groove 70c for the large-diameter disc DL, and to the upper end for the small-diameter disc.

A pair of T-shaped support arms 83 made of a thin metal plate are attached to each end of the rotary arm 85 and the detection arm 90. Each support arm 83 is made of resin or ceramic. Guide members 84 each having a V-shape are attached to face each other. The inside of these guide members 84 has a groove shape for holding the disk D. Further, the rotary link member 80 and the link arm 81 are pulled by a coil spring 94.

When the rotating link member 80 is rotated clockwise to hold the disk D, the link member 82 is drawn inward with the connection pin P2 as a fulcrum, and the link arm 81 is also moved inward. The pair of guide members 84 slide toward each other so as to be able to clamp the disk D. When the rotating link member 80 is rotated in the counterclockwise direction, the pair of guide members 84 slide in a direction away from the disk D to release the clamping of the disk D, contrary to the above. It has become.

Next, the disk holding detection mechanism 100 includes a rotary base 102 having a rectangular shape, and a push switch 105 and a detection arm 95 provided on the rotary base 102. The rotating base 102 is rotatably supported by a rotating shaft 102a. Further, a regulating pin (not shown) protruding from the lower surface of the rotating base 102 is inserted into the arc groove 72 of the slide member 70. Detection arm 9
5 has a stepped shape by bending an intermediate portion of a band-shaped metal plate. Then, with one end of the detection arm 95 placed on the slide member 70,
The other end, which is pivotally supported by 02a and bent in a crank shape, extends through a circular arc groove 73 formed in the slide member 70 to the lower surface side of the slide member 70. At the other end of the detection arm 95 extending to the lower surface side, a detection pin P7 projecting toward the bottom plate portion 12 of the housing 10 is attached. The detection pin P7 comes into contact with the outer peripheral edge of the disk D when the disk D is inserted, and is pushed outward along the outer peripheral edge of the disk D. With the movement of the detection pin P7, the detection arm 95 rotates counterclockwise about the rotation shaft 102a.

The detection arm 95 has a vertical piece (not shown) formed by bending vertically.
2 is opposed to the push switch 105 attached. A coil spring (not shown) is stretched between the detection arm 95 and the rotation base 102 so that the detection arm 95 is always urged clockwise around the rotation shaft 102a by the coil spring to rotate. It has become.

Next, the structure of the traverse unit mechanism for moving the disk D up and down will be described. As shown in FIGS. 6 and 7, the bottom plate 12 of the housing 10 has a notch hole 18 at the center thereof. Are formed, and a pair of internal side plates 16 and 17 are formed at the edge of the cutout hole 18 by being cut and raised from the bottom plate portion 12. And these internal side plates 16,
17 is provided with guide pins 16c and 17c that protrude outward. Further, as shown in FIG.
A vertically long hole 16a is formed in the inner side plate 16 so as to extend vertically, and a vertically long hole (not shown) is similarly formed in the inner side plate 17 so as to extend vertically. 4 on the bottom plate 12
Rectangular engagement grooves 12a, 12b and 12c, 1
2d is formed to penetrate in parallel with the inner side plates 16 and 17, respectively, and rectangular engagement grooves 12e and 12f parallel to the side plate 15 are formed in the rear corner of the bottom plate 12.

As shown in FIG. 6, the first connecting member 34 is provided with a support shaft 34a at the center thereof and projections 34b projecting upward at both ends thereof. An engagement pin 34c adjacent to the projection 34b is provided to protrude upward. The first connecting member 34 is pivotally supported on the bottom plate portion 12 such that the first connecting member 34 can swing around the support shaft 34a as a fulcrum.

As shown in FIGS. 6 and 7, the disc-shaped rotary cam 40 includes a rotary shaft 40a provided at the center thereof,
It is composed of a cam groove 41 formed on the front surface, a cam groove 42 formed on the back surface, and a gear 40d provided on the periphery. In FIG. 6, the cam groove 41 is indicated by a solid line, and the cam groove 42 is indicated by a dotted line. The rotary cam 40 is provided between the first connecting member 34 and a second connecting member 35 described later. The engagement pin 34c of the first connecting member 34 is inserted into the cam groove 42 of the rotary cam 40. The transmission gear 110 and the small gear 13 are provided on the gear 40 d of the rotary cam 40.
5 (see FIG. 8) are engaged. The rotating cam 40 receives a rotational driving force by meshing the gear 40d with the above-described drive motor 99 via the transmission gear 110.

The first elevating member 45 is an L-shaped metal plate, and includes a bottom plate 47 and a side plate 48 bent at a right angle from the bottom plate 47, and one end of the bottom plate 47 extending to the rotary cam 40. The portion is wide, and here an elongated hole 49 is formed at right angles to the longitudinal direction. Two claw portions 47a are formed at the edge of the bottom plate 47, and these claw portions 47a are bent downward. The side plate 48 is provided with the elongated horizontal groove 4.
8f and an elevating guide groove 48g formed adjacent to the horizontal groove 48f and inclined downward from the front to the rear. The first elevating member 45 is slidably attached to the inner side plate 16 with the side plate 48 superimposed on the inner side plate 16 of the housing 10. The first hole in the long hole 49 of the bottom plate 47 is
Of the connecting member 34 are connected. The claw portion 47a of the first lifting member 45 is engaged with the engagement groove 12 of the bottom plate portion 12.
a, 12b, and are slidable using the engaging grooves 12a, 12b as guides. A vertically elongated hole 16a of the inner side plate 16 overlaps with the elevating guide groove 48g of the first elevating member 45 so as to partially coincide.

Similarly, the second lifting member 50 is formed of an L-shaped metal plate, and includes a bottom plate 52 and a side plate 53 bent at a right angle from the bottom plate 52. An elongated hole 54 is formed at one end of the bottom plate 52, and two claw portions 52 a are bent downward at the edge of the bottom plate 52. Side plate 5
3 has an elongated horizontal groove (not shown) having a first elevating member 4.
5 is provided at a position symmetrical to the horizontal groove 48f, and two vertical guide grooves (not shown) are formed with the horizontal groove interposed therebetween so as to be inclined opposite to the inclination of the vertical guide groove 48g. ing. The elevating member 50 is connected to the inner side plate 1 of the housing 10.
7 is slidably mounted, and the elongated hole 54 is connected to the protrusion 34 b of the first connecting member 34. And the claw part 52a is engaged with the engagement grooves 12c and 12d of the bottom plate part 12.
And slidable using the engaging grooves 12c and 12d as guides. The elevation guide groove (not shown) of the elevation member 50 has an internal side plate 1 like the elevation guide groove 48g of the first elevation member 45 and the elongated hole 16a of the internal side plate 16.
The two vertically long holes 7 (not shown) overlap each other so as to partially correspond to each other.

The traverse unit 55 includes a bottom plate 57,
Side plate 5 bent at right angles from both sides of bottom plate 57
8 and 59, a turntable Ta which is connected to a spindle motor M (see FIG. 9) and is rotatably supported, and an optical head H having a reciprocally movable optical head. It is composed of Each of the side plates 58, 59 has two guide pins 58a and 58 projecting outward.
b, one guide pin 59a (see FIG. 6) is provided, and the guide pin 59a is
6a and the elevating guide groove 48g (see FIG. 7), and the guide pins 58a and 58b are inserted into a vertically long hole (not shown) of the inner side plate 17 and the elevating guide groove of the elevating member 50, respectively, so that the shaft is movable. Supported. The guide pins 16c and 17c of the pair of inner side plates 16 and 17 are inserted into the horizontal grooves 48f of the first and second lifting members 45 and 50, respectively, and are movably supported by the shafts.

Next, when reproducing the disk D,
The structure of the arm supporting mechanism for holding the arm is described below. As shown in FIG. 6, the second connecting member 35 is provided with a support shaft 35a at the center, a long groove 35b at one end, and an elliptical groove at the other end. 35c are provided, and an engagement pin 35e is provided between the support shaft 35a and the long groove 35b so as to protrude downward. The second connecting member 35 is pivotally supported by the bottom plate portion 12 so as to be swingable with the support shaft 35a as a fulcrum. The rotating shaft 40a is fitted in the long groove 35b of the second connecting member 35, and the engaging pin 35e of the second connecting member 35 is inserted into the cam groove 41.

The third elevating member 65 is an L-shaped metal plate, and includes a bottom plate 67 and a side plate 68 bent at right angles from the bottom plate 67, and extends from an edge of the bottom plate 67. The two claws 67a are bent downward, and a projection 67b extending from the bottom plate 67 is formed integrally. As shown by a dotted line in FIG. 7, the side plate 68 is formed with two long and narrow horizontal grooves 68f and 68g and one gentle ascending and descending guide groove 68h. The elevating member 65 is configured such that the bottom plate 67 is
The projection is mounted on the rear side of the side plate portion 15 with the side plate 68 abutting on the outside of the side plate portion 15 of the housing 10, and protruding outward from the side plate portion 15. 15d and 15c are inserted into the horizontal grooves 68f and 68g, respectively. The claw portion 67a is fitted into the engagement grooves 12e and 12f of the bottom plate 12, and is slidable.

An arm clamp (not shown) made of a T-shaped metal plate holds the disk D from above during reproduction of the disk D, and a cylindrical resin clamper is rotatably mounted at the center end. Have been. Lifting member 6
The guide pin of the arm clamp is inserted into the lifting guide groove 68h of the fifth arm 5, and the arm clamp is moved up and down with the movement of the lifting member 65 in the front-rear direction. When the disk D is placed on the turntable Ta,
The disc D is rotatably supported by the clamper moved downward.

Next, the structure of the disc ejection mechanism used when ejecting the disc D will be described. As shown in FIG. 8, a disc tray 75 made of resin has an opening 76 at the center.
To provide a U-shaped first guide stepped portion 77a toward the front of the apparatus (left side in the figure), and a second U-shaped second stepped portion higher than the first guide stepped portion 77a. And a guide step 77b. Further, an arc groove 78 is cut out so as to cross the first and second guide steps 77a and 77b from the opening 76. When the disc D is ejected, the disc tray 75 has a turntable Ta.
The upper disk D is lifted and temporarily held, and the first guide step portion 77a is used for the size of the disk D, that is, for the 8 cm disk (DS), and for the 12 cm disk (DL). The second guide steps 77b are each used. The disk tray 75 is mounted in the housing 10 at a predetermined distance from the bottom plate 12.

The eject arm 130 made of a rectangular thin metal plate has a push-out pin 130a protruding vertically at its tip. A mounting hole 130b is formed at the opposite end of the push pin 130a. A support (not shown) standing on the bottom plate 12 of the housing 10 is fitted into a mounting hole 130 b of the eject arm 130. The eject arm 130 is attached so as to be rotatable around a support column.

Next, as shown in FIG.
A control system of the spindle motor M for rotating the disk D mounted on the disk device in accordance with the detection signal output from the controller will be described. The signal processing unit 200 includes the CPU 2
1 and a drive circuit 202 for controlling the spindle motor M by input / output of the CPU 201. Then, the detection signal from the optical sensor 30 is converted to a CP.
By inputting the signal to U201, a drive signal from the drive circuit 202 to the spindle motor M is output to rotate or stop the spindle motor M.

Next, as shown in FIGS. 10 to 24, a first disk D1 (D in FIG.
L) is stored, and the disk D1 is rotationally driven.
A series of operations for inserting the second disk D2 (DS in the figure) and exchanging the disks D1 and D2 will be described below.

(Initial state before inserting disk D1) State before inserting disk D1 into the disk device (see FIG. 8)
Then, the eject arm 130 is located at the rear of the apparatus, the traverse unit 55 is at the lower position (clamp state) on the lower side, and the slide member 70 is at the insertion port 21.
It is located on the side b (see FIG. 4).

(Disk D1 Insertion Operation) Next, as shown in FIGS. 10 to 12, when there is no disk D in the apparatus, the open insertion slot 21b of the front panel 20 is opened.
Then, for example, the large-diameter disk D1 (DL) is inserted horizontally. When a part of the disk D1 comes into contact with the inclined portion 26a and the wall 23a of the door 25 and further pushes the disk D1 toward the rear of the apparatus, the peripheral edge of the disk D1
0 abuts on a pair of guide members 84. When there is no disk D in the apparatus, the spindle motor M is in a stopped state, and by detecting this, the signal processing unit 200 does not operate the optical sensor 30.

The leading edge of the disk D1 slides against the guide member 84 to spread it out, and the guide member 8
4 and a part of the periphery of the disk D1 contacts the detection pins P7 and P9. At this time, the rotating link member 80 is rotated clockwise, the link member 82 is drawn inward with the connection pin P2 as a fulcrum, and the link arm 81 is also drawn inward to form a pair of guide members 84. Slide in the direction approaching each other so as to be able to clamp the disk D1.

The detection arm 95 having the detection pin P7 rotates counterclockwise, and at the same time, the detection arm 90 having the detection pin P9 rotates clockwise. Detection arm 9
5 is rotated, the push switch 10 is
5 is pressed, the push switch 105 outputs an ON signal, and the drive motor 99 rotates. In the case of the small-diameter disk DS, the disk insertion operation is performed similarly to the large-diameter disk DL.
4 and between the detection pin P7 and the detection pin P9 are smaller than those of the large-diameter disk DL in accordance with the diameter of the small-diameter disk DS.

Next, the disk D1 held between the guide members 84 is transported to the rear of the apparatus together with the slide member 70 as shown in FIGS. At this time, when the push switch 105 receives an ON signal indicating that it is in a chucking state, the rotational driving force of the drive motor 99 is transmitted to the transmission gear 110 via the worm gear 101, and the large gear 115 is rotated clockwise. Let it. The guide pin 115b on the large gear 115 moves in the slide groove 120a, rotates the transfer arm 120 clockwise around the support pin 120c, and connects the connection pin P14 to the guide groove 13c.
In order to move the inside backward, the slide member 70 connected to the connecting pin P14 moves backward. Thus, the disk D1 is disposed together with the slide member 70 in the space between the turntable Ta and the arm clamp. When the slide member 70 moves from the front panel 20 side to the rear side of the apparatus, the detection switch 161 urged by a projection pin (not shown) of the slide member 70 is turned off from the on state.

With the disk D1 placed in the space between the turntable Ta and the arm clamp, the rotating cam 4
As the second connection member 35 rotates, the elevating member 65 slides forward by the rotation of the second connecting member 35, and the guide pin of the arm clamp moves down the inclined surface along the elevating guide groove 68h of the elevating member 65. Is pivoted downward about a part of the arm clamp, and the clamper of the arm clamp descends downward.

(Disc D1 Playback or Recording) Thereafter, when the rotary cam 40 is further rotated, the traverse unit 55 is raised to the release starting point as shown in FIGS. When the clamping of D1 is completed, the connecting pin P110 of the slide member 70 is guided by the tapered portion 13d or 13e to move to the rearmost portion, and the chucking of the disc D1 by the sandwiching of each guide member 84 is more reliably released. At the same time, the traverse unit 55 descends slightly and PLA
It is located at the Y position. At this time, the rotation link member 8
0 is rotated in the counterclockwise direction, and a pair of guide members 8 are rotated.
4 slides away from the disk D,
Release the pinch.

As shown in FIGS. 17 and 18, when the large gear 115 is further rotated, the slide member 70 is brought into contact with the guide pin P1 engaged with the slide groove 120b of the transfer arm 120.
4 and returns to the front panel 20 side via the housing 10.
Is stopped by detecting the position of the detection switch 161 attached to the side plate portion 15 of FIG. When the position detection by the detection switch 161 is completed, the rotation of the spindle motor M is started via the signal processing unit 200, and the turntable Ta on which the disk D1 is mounted is rotated to reproduce or record the disk D1.

(Operation for Inserting Disk D2) Next, when the disk D1 as the first disk is reproduced in the apparatus, for example, a new disk D as the second disk is read.
2 to 2 are inserted and replaced.
This will be described below based on As shown in FIGS. 19 and 20, when a new disk D2 is inserted from the insertion slot 21b, the disk D1 previously mounted in the apparatus becomes
At the same time as the insertion of the disk D2, a preparation is made to discharge the disk D1 from the outlet 26c. When the disk D2 is inserted into the apparatus via the front panel 20, the CPU 201 of the signal processing unit 200 shown in FIG. 9 detects the rotation of the spindle motor M via the drive circuit 202 by reproducing the disk D1, and the optical sensor 30 The light emitting element 30a emits light. As shown in FIG. 22, the disc D2 is
1b, the light emitted from the light emitting element 30a is incident on the tip of the disk D2 as shown in FIG.
b. When light is incident on the light receiving element 30b, a detection signal of an ON state is sent from the light receiving element 30b to the signal processing unit 200, and the CPU 201 determines that the disk D2 has been inserted. The rotation of the motor M is stopped immediately.

Therefore, as shown in FIG. 23, even if the user intends to insert the disc D2 horizontally into the insertion slot 21b and accidentally inserts the disc D2 obliquely into the insertion slot 21b, the light emitting element 30a of the optical sensor 30 will not be inserted. Even if the emitted light enters the light receiving element 30b and the disc D2 continues to be inserted obliquely into the apparatus, the CPU 201 sends a stop signal to the drive circuit 202 to rotate and turn the spindle motor M. The rotation of the disk D1 on the table Ta is immediately stopped. As described above, regardless of the insertion state of the disk D2, if the disk D2 is inserted, the first
Of the disk D1 (the disk in the rotationally driven state) stops at the initial stage of insertion of the disk D2.

(Disk D1 Ejecting Operation) Next, an operation of ejecting the disk D1 housed in the apparatus will be described. When the rotary cam 40 is rotated by the drive motor 99 in a state where the disk D2 is disposed in the space between the arm clamp 60 and the turntable Ta together with the slide member 70, the disk D2 is in the same manner as the above-described operation of inserting the disk D1. Then, the turntable Ta and the clamp by the arm clamp are started. While the insertion and clamping operation of the disk D2 is being performed, the discharging operation of the disk D1 is performed in parallel with the lower portion. Traverse unit 55 raised in conjunction with the rise of the arm clamp
On top of this, a disk D1 from which reproduction has been performed is mounted. When the rotary cam 40 shown in FIG. 8 rotates, the push-out pin 130 a at the tip of the eject arm 130 moves around the support of the bottom plate 12 in accordance with the rotation of the small gear 135, and the traverse unit 55 descends. The disk D1 placed on the disk tray 75 is pushed out toward the outlet 21c of the front panel 20. Disc D1 extruded by push pin 130a
As shown in FIG. 21, when the back side of the inclined portion 26a is pressed, the door 25 rotates about the support shaft 26b and the outlet 21
c is opened, guided to the outlet 21c, and discharged to the outside of the apparatus. After ejecting the disc D1, the disc D2 is mounted on the traverse unit 55 at the timing when the disc D1 is ejected, and the subsequent operation of the disc D2 is the same as that of the disc D1 described above.

In the disk device configured and operated as described above, the disk D2 is inserted into the insertion port 21 of the front panel 20.
When the disc D2 is inserted into the disc D2, the disc D2 is conveyed to the rear of the apparatus together with the slide member 70 to detect partial insertion of the disc D2 before the disc D2 is securely clamped in the apparatus by the pair of guide members 84. Even if
The disk D1 in the apparatus is stopped immediately, and does not cause a big problem such as breakage due to contact. The light sensor 30 includes a light emitting element 30a and a light receiving element 30a.
b, and can be attached even in a small space of the front panel 20, and can be easily attached. In addition, the optical sensor 30
Although the reflective type is used in the embodiment, the present invention is not limited to the reflective type and may be a transmissive type. As long as the detection unit has a function of detecting that the tip (part) of the disk D has been inserted, for example, a mechanical switch other than the optical sensor may be used.

[0046]

In the disk device described above, a detection unit for detecting the partial insertion of the second disk inserted into the insertion opening of the front panel, and a detection signal output from the detection unit. By stopping the driving of the first disk in the case based on the first disk in the apparatus, even if the second disk is inserted, the rotation of the first disk in the apparatus is stopped. Does not cause major problems due to contact.

Further, since the detection section is provided near the insertion slot, the insertion of the disk can be detected quickly, and the rotation of the disk rotating in the apparatus can be stopped earlier. .

Further, the light sensor in which the light emitting element and the light receiving element are integrated can be mounted even in a small space of the front panel 20 and can be easily mounted.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view of a disk device according to the present invention.

FIG. 2 is a front view of the disk device according to the present invention.

FIG. 3 is a longitudinal sectional view taken along line 3-3 in FIG.

FIG. 4 is a plan view of the disk device according to the present invention.

FIG. 5 is a schematic longitudinal sectional view taken along line 5-5 in FIG.

FIG. 6 is a schematic plan view of a disk device according to the present invention.

FIG. 7 is a schematic vertical sectional view taken along line 7-7 in FIG.

FIG. 8 is a plan view showing a disk tray portion of the disk device according to the present invention.

FIG. 9 is a schematic explanatory diagram for explaining a drive control system of a spindle motor according to the disk device of the present invention.

FIG. 10 is a longitudinal sectional view showing an operation state of inserting a disk according to the disk device of the present invention.

FIG. 11 is a plan view showing a state in which a disk is held in the disk device according to the present invention.

FIG. 12 is a schematic longitudinal sectional view in FIG.

FIG. 13 is a plan view showing a state where a disk is housed at the rearmost part in the disk device according to the present invention.

FIG. 14 is a schematic longitudinal sectional view in FIG.

FIG. 15 is a plan view showing a PLAY position state in which a disk is stored in a turntable according to the disk device of the present invention.

16 is a schematic longitudinal sectional view in FIG.

FIG. 17 is a plan view showing a PLAY state of the disk according to the disk device of the present invention.

18 is a schematic vertical sectional view in FIG.

FIG. 19 is a plan view showing an operation state of inserting the next disk in a state where the disk is housed in the disk device according to the present invention.

FIG. 20 is a schematic longitudinal sectional view of FIG.

FIG. 21 is a longitudinal sectional view showing an operation state of ejecting a disk according to the disk device of the present invention.

FIG. 22 is a schematic longitudinal sectional view showing an operation state of inserting the next disk in a state where the disk is housed in the disk device according to the present invention.

FIG. 23 is a schematic longitudinal sectional view showing an operation state in which the next disk is obliquely inserted in a state where the disk is housed in the disk device according to the present invention.

FIG. 24 is a longitudinal sectional view showing an operation state of the optical sensor according to the disk device of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Case 20 Front panel 21b Insertion port 21c Discharge port 30 Optical sensor (detection part) 30a Light emitting element 30b Light receiving element

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Hiroyuki Kagaya 1-7 Yukitani Otsukacho, Ota-ku, Tokyo Alps Electric Co., Ltd. F-term (reference) 5D046 AA12 BA01 CA16 CB02 CD01 EA06 GA02 HA08

Claims (3)

[Claims] An insertion port and an ejection port are provided in a front panel attached to a housing, and a second disk is inserted into an insertion port of the front panel in a state where a first disk is driven in the housing. When the first disk is inserted, the first disk is ejected from the outlet, and the second disk is driven. In a replaceable disk device, a part of the second disk inserted into the insertion opening is inserted. A disk unit configured to stop driving of the first disk based on a detection signal output from the detection unit. 2. The disk device according to claim 1, wherein said detection unit is provided near said insertion slot. 3. The disk device according to claim 1, wherein the detection section is constituted by an optical sensor in which a light emitting element and a light receiving element are integrated.