JPS6124052A - Disc device - Google Patents

Abstract

PURPOSE:To attain opening/closing of a cover attended with disc loading and ejection and to prevent duplicate loading by providing the 1st switch operated only with a disc and the 2nd switch operated with a storage case to the cover. CONSTITUTION:When a disc storage case 51 is loaded from a loading inlet 2, a disc carrier detection switch 38 is turned on and succeedingly an ejection completion detecting switch 39 is turned on by the carrying of a disc D. When the disc D is carried completely to a loading part 37, a disc suction end detection switch 40 is turned on and the loading inlet 2 is closed. Even if another disc is loaded in error during the playing of the disc D, since an eject completion switch 39, a suction end switch 40 and a loading end switch 47 are all turned on, no AND condition is established, an alarm means is actuated to prevent duplicated loading.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a disc device for reproducing a disc (disk-type recording medium), for example, a digital audio disc.

Background Art and Problems This type of disk device uses a box type, door type, pull-out type, etc. as the disk loading method.
In either case, loading and unloading a disk requires opening or pulling out a portion of the loading section of the disk, making the operation cumbersome and requiring a large space on the operating surface side.

For this reason, simply making this disk device smaller in order to install it in a car, etc. would require a lot of effort to load and eject the disk, and it would not satisfy the condition that it can be easily handled while driving. Since it requires space on the side, there is an inconvenience that the mounting position is limited.

Therefore, disk devices installed in automobiles, etc. must be configured to allow disks to be directly inserted and loaded, but this will prevent unnecessary insertion of components other than disks from the disk insertion slot, ingress of dust, laser leakage, etc. To prevent this, it is necessary to equip the insertion port with an opening/closing lid.

In this case, it is desirable that the opening/closing lid be opened without touching the disk surface when inserting and ejecting the disk, and kept closed during loading.

Purpose of the Invention In view of the above, the present invention provides a disc insertion slot with a cover,
It is an object of the present invention to provide a disk device in which the opening and closing of the lid body is reliably performed in conjunction with the insertion/loading and ejection operations of the disk, and furthermore, double insertion is prevented when loading the disk.

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a storage case configured to store a disk and a portion of the disk, and a lid body for opening and closing a disk insertion slot provided in a disk device. , a locking mechanism that locks the lid in the closed position, two electromagnetic mechanisms that release the lock by this locking mechanism, a detection mechanism that detects that a disk is inserted into the disk device, and a detection mechanism that is provided on the lid. The first switch is operated only by the disc, the second switch is operated by the disc storage case, and the detection device detects insertion of the disc. In this state, when only the first switch is operated, the electromagnetic mechanism is not operated, and when the second switch is operated, the electromagnetic mechanism is operated.

Example An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows the entire disk device, which is installed in, for example, a car or the like and plays back digital audio disks.

This disk device +11 is a device in which a disk D is loaded in a slot-in method, and the insertion slot frame body (3) fitted into the insertion slot section (2) of the disk D bulges up and down to be larger than the height of the disc storage case described later. It has an inner opening (2) with an elliptical or polygonal shape, and the inner peripheral surface is formed into a tapered shape that narrows inward, that is, the left and right inner surfaces (3a), (3b) are Inner surface (3c),
(3d) The tapered portion has a larger inclination angle, and the rear opening width of the insertion opening portion (2) is formed to be narrower than the width of the disk storage case. In addition, the lower edge of the front side of the insertion slot frame (3) protrudes from the upper edge, and both edges are sloped so that both the upper and lower edges are continuous. Prevention part (4a) (4b
).

An opening/closing lid (5) is provided on the rear side of the insertion slot frame (3), and this opening/closing lid (5) is connected to the front and rear lid plates (6).
.

(7) Double structure with lock opening/closing mechanism (8)
It is configured to be locked and opened/closed by.

That is, the front and rear cover plates (61, +71) of this cover body (5) have their upper edges connected to a shaft (
9), and the front and rear lids @ (
A lock opening/closing mechanism (8) composed of related members is installed below 61 and 71.

The configurations of the front and rear cover plates (6), fil, and lock opening/closing mechanism (8) will be explained in detail with reference to FIGS. 4 to 8.

The front cover plate (6) is formed of an elastically deformable metal thin plate, and a switch mechanism (11) is installed between the front and rear cover plates (61, +71).
), as shown in Figure 8, there are a plurality of protrusions (12a), (12b), (3 in this example) on the front side.
A rubber key plate (12) protruding from the rubber key plate (12c) is arranged, and its protrusion is formed in the rear cover plate (7).
).

(7b), (7c) are made to protrude to the front side and come into contact with the front cover plate (6), and the above-mentioned protrusion (12a) is provided on the rear side of this rubber key brake 1-(12).
, (12b).

Movable contact formed on the rear side of (1, 2c) (not shown)
Fixed contacts (13a), (13b),
A flexible printed circuit board (14) on which a conductive pattern (13) having a conductive pattern (13c) is formed is stacked on top of the other with its back surface lined with a presser plate (15), and this rubber key plate (12), printed circuit board (14) and The presser plate (15) is attached to the back cover plate (7) in this overlapping state.
) on the rear surface of the claw pieces (16a), (16b)...
A switch mechanism (11) is constructed by being fixedly attached to the switch mechanism (11).

Note that this switch mechanism (11) has a central switch section (
Ila), that is, the switch operating force of the rubber key plate (12) and the central protrusion (12a) is, for example, 100 g, and the switching force of the switch parts (llb), (llc), that is, the protrusions (12b), (12c) on both sides is, for example, 100 g. The switch operating force is set to 200 g, for example.

Further, a side frame portion (17) having a U-shaped cross section is formed on the negative side of the rear cover plate (7), and a long hole (17) in the vertical direction is formed on this side surface.
a) is formed. A lock opening/closing mechanism (8) is provided below the negative side of the rear cover plate (7).

That is, this mechanism (8) is the rear lid W9. (A sliding lever (18) that slides in the front-back direction relative to 71 and a lock that is pivotally supported on the fuselage so that it can rotate in the vertical direction and abuts the edge of the rear cover plate (7) from below. It consists of a plate (19) and an opening/closing lever (20) that is rotatably supported vertically on the fuselage and has one end engaged with the rear cover plate (7), and the sliding lever (18) is A long hole (18a) formed in the front-rear direction is engaged with a pin (21) protruding from the fuselage so that it can slide horizontally in the front-rear direction, and is always biased rearward by a spring (22). There is.

One end of a rotating arm (23) whose center portion is pivotally supported by the aircraft body is engaged with the sliding lever (18) via a pin (24), and the other end of this rotating arm (23) is engaged with the sliding lever (18). The driving force of the plunger (25) connected to the spring (22
) is slid forward against the biasing force. This plunger (25) is actuated by the ON operation of the switch mechanism (11) described above.

In addition, the lock plate (19) and the rotation lever (20) are coaxially supported on the body by a shaft pin (24), and the lower end of the rear cover plate (7) is attached to the tip of the lock plate (19). A plurality of contact lock pieces (26) that contact the edge from below
protrudes horizontally forward, and also has a sliding lever (
18) is formed with a contact piece (29) whose front half (29a) is horizontal and whose rear half (29b) is inclined in one direction. Lever (18)
The retaining pin (30) protruding from the rear inclined part (29b)
The first half horizontal portion (29a) is abutted. That is, when the sliding lever (18) is in a backward state with respect to this contact piece (29), the engagement pin (30) is in the rear inclined portion (29b).
In this case, when it is in the forward movement state, it will ride on the front half horizontal part (29a) and come into contact with it, so the lock plate (1
9) is rotated downward around the shaft support by the shaft pin (24), and the lock piece (26) is separated from one edge of the rear cover plate (7), and the lock is released. The lock plate (19) is located between the rear end of the lock plate (19) and the vertical end piece (31) of the sliding lever (18).
A spring (32) is stretched to bias the locking direction.

Further, the rotation lever (20) has a retaining pin (33) protruding laterally at the tip and is engaged with the long hole (17a) of the side frame (17) of the rear cover plate (7). The pin (34) protruding from the rear end and the horizontal piece (35) at the front end of the sliding lever (18)
A spring (36) is stretched between the limiter and the limiter. As the slide lever (18) slides forward, it is rotated upward via the spring (36).

Further, inside the disk unit ff+11, various detection mechanisms and their switches are arranged as shown in FIG. That is, a disc carrier detection switch (described later) is installed on the side between the disc insertion slot (2) and the loading part (37).
38), an ejection completion detection switch (39) is provided at the outer end of the loading section (37), a disk suction completion detection switch (40) is provided at the inner end, and a loading completion detection switch (41) is provided at the side. LED switches can be used as these switches.

In Fig. 3, (42) is a feed roller during disk loading and unloading, (43) is a chucking plate, (44) is a spindle motor, and (45) is a chucking plate.
) is the loading motor.

Next, referring to FIG. 9, a description will be given of a disk carrier for storing a disk to be loaded into a disk device according to the present invention.

The disc carrier consists of a disc storage case (hereinafter referred to as storage case) (51) and a lid (52),
The storage case (51) is large enough to store the disk D up to approximately half its circumference, and the lid (52) covers the portion of the disk D that protrudes from the storage case (51) and is also large enough to accommodate approximately the front half of the storage case (51). It is the size that fits.

That is, the storage case (51) is constructed by inserting and fixing the rear half of an inner case (51a) which has elasticity and is open in the front-rear direction into an outer case (51b) whose rear surface is closed, and the inner case (51a) A lid (52) is fitted to the front half of the. A recess (53) is formed on both upper and lower sides of the front half of the inner case (51a) from its front edge to expose at least the center hole d of the disk D in the depth direction. The abutting portions (54) are attached to the tips located on both sides of (53).
a), (54b) are formed. In addition, the opening edge of the outer case (51b) corresponds to the curved surface shape of the insertion slot frame (3) of the disk device (1), and the incorrect insertion prevention part (5)
5) is formed, and a step portion (56) corresponding to the mouth edge of the outer case (51b), that is, the incorrect insertion prevention portion (55) is formed at the mouth edge of the lid (52).

Furthermore, in the above configuration, each switch is turned on and off at the timing shown in FIGS. 10 to 12. In other words, the switch (lla) in the center of the switch (11) on the opening/closing lid body (5) side is a switch that detects when the front lid plate (6) is pushed from the outside by the disc D, and when the disc D is not inserted. The opening/closing lid body (5) is opened only when the disk D is inserted, and when the disc D is inserted, a warning means such as an alarm is activated.
llc) is a switch that operates only when the front cover plate (6) is pressed with the front edge of the empty disc storage case (51).
Only when ejecting using the carrier eject exclusive storage case (51)
) and (lie) are pressed by the abutting portions (54a) and (54b) of the storage case (51) and turned on at the same time, and the opening/closing lid (5) is opened. Further, it functions only when the disk D is inserted and loaded, and its operation is indicated by B.

The carrier detection switch (38) is a switch that detects when the storage case (51) has been inserted to the normal position, and is used exclusively for carrier ejection.The loading motor (45) is reversed only when ejecting using the storage case (51). The operation is shown by C.

The eject completion switch (39) is a switch that detects the completion of the eject operation, and is a switch that detects when the eject operation is completed.
45), and its operation is indicated by D.

The suction completion switch (40) is a switch that detects when the disc has been suctioned to the normal position.
5) and moves to a chucking operation, and this operation is indicated by E.

Further, the loading completion switch (41) is a switch that detects that loading is or has been completed, and functions to turn off the loading motor (45) and start the servo circuit operation, and this operation is indicated by F. .

In addition, in FIGS. 10 to 12, a is a plunger (
25), b is the loading motor.

(45), C is the spindle motor (44)
The operating status of each is shown.

Next, the loading and unloading operations of a disk stored in a carrier in the disk device configured as described above will be explained with reference to the operation waveform diagrams of FIGS. 10 to 12.

First, remove the lid (52) from the disk storage case (51), and insert the insertion slot frame (3) of the insertion slot (2) of the disc device (11) with a part of the disc D (approximately half the circumference in this example) exposed. ), the tip circumferential surface of the disk D hits the center of the front cover plate (6) of the opening/closing cover body (5),
This is pressed inward to elastically deform it into a concave shape. For this reason, the central switch (lla) of the switch mechanism (11) disposed on the rear cover plate (7), that is, the central protrusion (12a) of the rubber key plate (12), is pressed, and therefore the inner surface of the switch (lla) is pressed. The movable contact on the side abuts the central fixed setting (13a) of the conductive pattern (13) of the printed base & (14) and closes the central switch (lla) (FIG. 1OA).

The plunger (25) is actuated by turning on the switch (lla) in the center (Fig. 10a), so that the sliding lever (18) moves forward against the biasing force of the spring (22), as shown by the arrow in Fig. 6. This sliding lever (1) slides in the a direction.
8) and the rotating lever (20) stretches, and the rotating lever attempts to rotate upward. At the same time, the lock plate (19) is moved by the engagement pin (30) protruding from the sliding lever (18) to the contact piece (29).
), that is, the holding bottle (30)
The lock piece (26) rides on the front half horizontal part (29a) from the rear slope part (29b) and is pressed downward, which means the direction in which the lock piece (26) is separated from the lower edge of the rear cover plate (7), that is, the rear cover plate. (7) is operated in the direction of unlocking.

When the rear cover plate (7) is unlocked, the rotating lever (20) is rotated upward by the force of the above-mentioned swivel (36), and the engagement pin (33) The engaged rear cover plate (7) is rotated integrally with the front cover plate (6) in an engaged state, and the insertion opening portion (2) is opened.

Insert the disk D together with the carrier, ie, the disk storage case (51), through the insertion opening (2) opened in this way, and place the leading edge of the disk D on the upper and lower feed rollers (42).
) to be inserted between. At this time, the inner case (51a) of the storage case (51) is located on the inner surface (3a) of the insertion slot frame (3).
It is pressed from both sides along the taper (3b), so that the upper and lower surfaces are deformed in the vertical direction and separated from the disk D.

On the other hand, the feed roller (42) is connected to the above-mentioned switch (lla).
The loading motor (45) is rotated in the forward direction (FIG. 10b) due to the ON operation of the disk D, and the disk D is transferred toward the loading section (37).

At this time, the disc storage case (51) also has an insertion opening (
2), the disk carrier detection switch (38) is turned on (FIG. 10C), and then the disk carrier D is inserted.
The ejection completion detection switch (39) is also turned on (D in the same figure).

At this time, the storage case (51) is inserted into the insertion port (2) until the edge of the outer case (51b), that is, the erroneous insertion prevention portion (55) comes into contact with the insertion port frame (3). In addition, storage case・
- If the case (51) is inserted into the insertion slot (2) in an inverted state, the incorrect insertion prevention part (55) will not correspond to the correct position of the insertion slot frame (3), and the storage case (51) will not correspond to the correct position of the insertion slot frame (3). ) cannot be inserted until the carrier detection switch (38) is turned on.

In this state, the disk D continues to be transferred toward the loading section (37), but at this point, the disk D continues to be transferred toward the loading section (37).
1) is pulled out from the insertion opening (2), the carrier detection switch (38) is turned off. In this case, if the storage case (51) is kept in the inserted state, the carrier detection switch (3B) remains on (dotted line in Figure 10C), and the disk D is completely transferred to the loading section (37). When the state is reached, the disk suction completion detection switch (40) is turned on (FIG. 10E). When this switch (40) is turned on, the plunger (25) is turned off (a in the figure), and the sliding lever (18) is therefore pushed backward by the biasing force of the spring (22), that is, in the opposite direction to arrow a in Fig. 6. As a result, the rotation lever (20) is released from being pulled by the spring (36), and is rotated downward by the weight of the opening/closing lid (5). The opening/closing lid body (
5) The rear cover plate (7) is rotated downward integrally with the front cover plate (6) to meet the insertion slot frame (3) from the inside and close the insertion slot section (2). It turns out. At this time, the lock plate (19) is also released from the pressure applied by the retaining pin (30), and is rotated upward by the contraction and tensile force of the spring (32), so that the lock piece (26) is attached to the lower edge of the rear cover plate (η). The opening/closing lid body (5) is held in a locked state as the rear lid plate (7) is opened and closed.

In this state, disk D is attached to the chucking plate (43)
The disc D is chucked onto the spindle motor (44) and set in a state ready for playing.In this way, the disc D is fed into the loading section (37) and is chucked onto the spindle motor (44) by the chucking plate (43).
) side, and when loading is completed, the loading completion switch (41) is turned on (FIG. 10F), and this on operation causes the loading motor (45) to be turned on.
is turned off (b in the same figure) and at the same time the spindle motor (4
4) is turned on (C in the same figure) and the performance of disc D is started.

During the performance of this disc D, when trying to insert and load another disc, the other disc was pressed against the front lid (6) of the opening/closing lid (5) and the central switch (lla) of the switch mechanism (11) was pressed. That is, the central projection (1) of the rubber key (12)
2a) and turn on this switch (Ila), the eject completion switch (39), suction completion switch (4o), and loading completion switch (47) are all in the on state, so the AND cannot be obtained and the alarm means e.g. alarm (not shown) is activated to detect a state in which another disk cannot be inserted, thereby preventing duplicate loading.

When the eject button is operated after the performance of this disc D is finished, the plunger (25) is turned on (Fig. 11a), the sliding lever (18) is slid forward, and the opening/closing lid (5) is opened in the same way as in the above case. The loading motor (45) is driven in reverse to open the insertion port (2) (FIG. 2B), while the spindle motor (44) is turned off (FIG. C).

As a result, the disk D is released from chucking and is sent out by reverse rotation of the feed roller. Therefore, first the loading completion switch (41) is turned off, and then the suction completion switch (4o) is turned off in sequence. Figures F and E), when the disk D reaches the vicinity of the insertion slot (2), the carrier detection switch is turned on (Figure C)
. Then, the disk D is further fed out, and the feeding roller (4
2), the ejection completion switch (39) is turned off (D in the same figure), which turns off the plunger (25) and the loading motor (45) (a, b in the same figure). In this state, the disk D has been sent out more than half a turn from the insertion opening (2), so it can be pulled out. Also, when the plunger (25) is turned off, the lid body (
5) is closed in the same manner as described above.

In this case, the carrier detection switch (38) remains on as long as the disk D is pulled out (dotted line in FIG. 11).

In addition, the opening/closing lid body closes the front edge of the empty storage case (51), that is, the contact surfaces (54a) and (54b) on both sides of the inner case (51a) during the performance path Y of the disc D or during the performance. When pressed against the front cover plate (6) of (5), the protrusions (12b) and (12c) on both sides of the rubber key (12) are pressed through the front cover plate (6), and both sides of the switch mechanism (11) are pressed. Switch part (llb)
, (llc) is turned on (Fig. 12B), which turns on the plunger (25) (Fig. ) is turned off (c in the figure), and the rotation of the disk D is stopped.

When the storage case (51) is inserted into the insertion opening (2), the carrier detection switch (38) is turned on (C in the same figure).
As a result, the loading motor (45) is turned on in reverse (FIG. 2B), the disk D is fed out in the same manner as described above, and the loading completion switch (41) and suction completion switch (40) are sequentially turned off (FIG. 1F). , E). In this state, the disk D is fed out while being inserted into the storage case (51), and the storage case (51) is moved out by the reverse rotation of the roller (42).
51) and is in a state where it is sent out from the insertion port (2). When the ejection completion switch (39) is turned off by further feeding (D in the figure), the plunger (25) and the loading motor (45) are turned off (a, b in the figure).

In this way, almost half of the disk D is covered with the storage case (
51) can be pulled out from the insertion opening (2), and the opening/closing lid body (5) closes the insertion opening (2) again by the above-mentioned off operation of the plunger (25). . In this way, ejection is completed.

In this way, the disk device of this example has a slot-in loading configuration for the disk, and the opening/closing lid of the disk insertion opening can be opened instantly by simply touching the disk or a dedicated carrier, allowing loading and ejecting of the disk alone. In addition, the disc can be loaded and ejected using a dedicated carrier, that is, a dedicated disc storage case.Also, when a disc is inserted and loaded, the storage case can be used to eject the disc, but when trying to insert another disc, loading and ejecting is performed. The mechanism is not activated and the warning means is activated to prevent double insertion of the disc.

Application Examples The present invention can be applied not only to disc players mounted on vehicles, but also to household disc players, recording and reproducing devices for disc-shaped magnetic recording media, and the like.

Effects of the Invention As described above, according to the present invention, the first switch that is operated only by the disk and the storage case that accommodates a portion of the disk are operated in the lid provided at the disk insertion opening of the disk device. A second switch is disposed, and when the first or second switch is operated, an electromagnetic mechanism that unlocks a locking mechanism that locks the lid in a closed position is actuated. When it is detected that the disc is inserted, even if only the first switch is operated, the electromagnetic mechanism is not activated and the lid remains locked in the closed position. The unlocking operation when opening the cover of the insertion slot can be performed directly by the disc when inserting a disc, and by the disc storage case when ejecting the disc, and this operation is performed by the side waiting for the disc or storage case. It is extremely easy to do this with just one hand, and even if you try to insert another disc while one disc is inserted, the lid will not be locked in the closed state, so double insertion of discs is reliably prevented. This prevents disk device failure and damage to the disk itself.
Particularly, as a disk device mounted on an automobile, etc., it is extremely effective not only in handling but also in terms of function.

[Brief explanation of the drawing]

FIG. 1 is an external perspective view of an example of a disk device according to the present invention, FIG. 2 is a front view with the lid of the disk insertion slot partially omitted, and FIG. 3 is a plan view showing the layout of the disk loading section. Figure 4 is a front view of the operating part of the lid, Figure 5 is the same, a cross-sectional plan view, Figure 6 is the same, a side view, and Figure 7 is the same,
FIG. 8 is an exploded perspective view of the rear lid-handling portion of the lid, and FIG. 9 is a side view of the lid with the lid opened, and FIG. 9 is a disc with the lid removed with the disc stored in the disc device to be loaded into the disc device according to the present invention. A perspective view of the storage case and FIGS. 10 to 12 are waveform diagrams for explaining the operation. In the figure, D is the disk, (2) is the insertion port, (5) is the opening/closing lid, (6) is the front lid, (7) is the rear lid, (11)
is the switch mechanism, (lla) is the central switch, (lla) is the central switch, (lla
b). (llc) is a switch on both sides, (18) is a sliding lever, (
19) is the lock plate, (2o) is the rotation lever, (2
5) is a plunger, (38) is a disk carrier detection switch, (39) is an ejection completion detection switch, (4) is a
0) is a suction completion detection switch, (4I) is a loading completion detection switch, (44) is a spindle motor,
(45) is a loading motor, (51) is a storage case, and (52) is a lid. 2n

Claims (1)

[Claims] A disc, a storage case configured to store a portion of the disc, a disc insertion slot provided in the disc device, and a lid body for opening and closing the insertion slot provided in the disc insertion slot; A locking mechanism for locking the lid in a closed position, an electromagnetic mechanism for releasing the lock by the locking mechanism, a detection mechanism for detecting that the disk is inserted into the disk device, and a detection mechanism provided on the lid. a first switch and a second switch, the first switch is operated only by the disc, the second switch is operated by the storage case, and the detection mechanism detects insertion of the disc. The electromagnetic mechanism is not operated when only the first switch is operated, and the electromagnetic mechanism is operated when the second switch is operated. disk device.