JPH0814916B2 - Disk guide device - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disc guide device used in a compact disc player or the like, and more particularly to a disc guide device used in a disc reproducing device in which discs having different diameters are rotationally driven by a common rotational drive mechanism. Regarding the device.

2. Description of the Related Art Conventionally, a disc reproducing apparatus has been put into practical use in which a compact disc having a diameter of 8 cm or a compact disc having a diameter of 12 cm is sandwiched by the same turntable and clamper and rotationally driven to reproduce.

As described above, in a disc reproducing apparatus for reproducing a large-diameter disc and a small-diameter disc by using the same disc rotation drive mechanism, when the small-diameter disc is inserted, the center of the small-diameter disc is It is necessary to regulate the position so that it coincides with the center axis of the turntable, and when the disc having the large diameter is inserted, the position of the center of the disc having the large diameter coincides with the center axis of the turntable. Therefore, in the conventional disc reproducing apparatus, the diameter of the disc is discriminated, and when the disc with the small diameter is detected, the stopper pin of the disc with the small diameter is rotated to bring the disc with the small diameter into contact with the stopper pin. A mechanism for removing the stopper pin for the small diameter disc from the disc transfer path is used when the disc is contacted to regulate the position and a large disc is detected.

As described above, in the conventional disc reproducing apparatus, since the position regulating means such as the stopper pin has to be moved according to the diameter of the disc, a drive mechanism for driving the position regulating means is required. Therefore, there is a problem that the configuration becomes complicated.

The present invention eliminates the above-mentioned conventional problems, and provides a disk guide device with a simple structure that does not require a drive means of a position restricting means for restricting the position of a disk.

Means for Solving the Problems In order to achieve the above object, the present invention has a plurality of disk guide surfaces for guiding a disk transferred in a disk transfer path according to a disk diameter, and is guided by each of the disk guide surfaces. A plurality of position regulating means for regulating the position of the disc and a rotation driving means for rotationally driving the discs of different diameters regulated by the respective position regulating means are provided, and the angles of the plurality of disc guide surfaces are made different. It is characterized by that.

Action The present invention has the above-described configuration, and the disc is guided to the disc guide surfaces at different angles according to the disc diameter, and the position is regulated by the position regulating means corresponding to each disc guide surface. A disk whose position is regulated by each position regulating means can be driven by a common rotation driving means.

Embodiment An embodiment of the present invention will be described below with reference to FIGS. In FIGS. 1 to 4, 1 is a top surface chassis, 2 is a side surface chassis, and the top surface chassis 1 and the side surface chassis 2 are fixed by screws. Reference numeral 3 denotes a rotating plate rotatably supported on the upper chassis 1 by shafts 3a and 3b, and a clamper 4 is rotatably supported by a shaft 5 at a tip portion of the rotating plate 3. Reference numeral 6 denotes a substrate to which the motor 7 is fixed, and the substrate 6 is supported by the side chassis 2 by a rubber damper 8. Reference numeral 9 is a turntable fixed to the rotating shaft of the motor 7, and the hole edge portion of the center hole of the disk 10 inserted from a disk insertion hole (not shown) is sandwiched by the turntable 9 and the clamper 4. It is rotationally driven by the rotational driving force of the motor 7.

Next, a transfer mechanism for transferring the center of the disk 10 inserted through the disk insertion hole (not shown) to the center line of the turntable 9 will be described. Reference numeral 11 denotes a first lever slidably supported on the outer surface side of the upper surface chassis 1, and a hole 12 is formed at a substantially central portion of the first lever 11. Reference numeral 13 is a pin implanted in the upper surface chassis 1, and the pin 13 is inserted into the hole 12 of the first lever 11. The shape of the hole 12 of the first lever 11 is an arrow shape as shown in FIG. 4, and the guide groove portion 14 into which the pin 13 implanted in the upper surface chassis 1 is inserted and the opening portion of the guide groove portion 14 are formed. It is composed of pin locking portions 15a and 15b formed on both sides and inclined portions 16a and 16b. Reference numeral 17 denotes a second lever rotatably supported by a shaft 18 on the lower surface side of the upper surface chassis 1.
One end of is connected to one end of the first lever 11 by a pin 19. Reference numeral 20 is an arcuate hole formed in the upper surface chassis 1, and the pin 19 connects the first lever 11 and the second lever 17 through the hole 20. 21 is the second lever 17
Is a guide pin provided at the other end of the. Reference numeral 22 denotes a third lever rotatably supported by a shaft 23 on the lower surface side of the upper surface chassis 1, and a pin 24 is provided between both end portions of the third lever 22 and one end of the first lever 11. It is connected. Reference numeral 25 is a guide pin provided at the other end of the third lever 22, and the guide pin 25 is an arc-shaped hole 26 formed in the upper surface chassis 1.
The first lever 1 and the third lever 22 are connected via. 27 is a spring, one end of which is locked to the third lever 22 and the other end of which is locked to the upper surface chassis 1. The elastic force of the spring 27 causes the third lever 22 to rotate in a counterclockwise direction (see FIG. 3). ). Reference numeral 28 denotes a guide plate fixed to the lower surface side of the upper surface chassis 1, and the second lever 17
And the third lever 22 rotates within a gap formed between the lower surface of the upper chassis 1 and the guide plate 28. Note that, in FIG. 3, the attachment position of the guide plate 28 is shown by a broken line. 5A, 5B, and 5C show the guide plate 28. Fifth
In the figure, 29 is a U-shaped flat portion, 30 is a side 29 of the flat portion 29.
A U-shaped inclined surface inclined in the direction of arrow Y from a, 31 is a second inclined surface connecting the side 29b of the flat portion 29 and the inclined surface 30, and 32 is a side 29c of the flat portion 29 and the inclined surface 30. It is the third inclined surface that connects. Reference numeral 33 is a rubber roller recess formed on the flat surface portion 29, and reference numeral 34 is a restriction piece for restricting the transfer range of the disk.
5B shows the AA cross section of FIG. 5A, and FIG.
Shows the BB cross section of FIG. 5A. Also, FIG. 5B,
In C, 35 is a rubber roller, and this roller 35
Is rotationally driven by the rotational driving force of a motor (not shown). The disc inserted in the Y direction from the disc insertion opening enters between the roller 35 and the guide plate 28, and the roller 35
It is transferred in the Y direction by the rotational driving force of.

6A to 6E show the relationship between the guide plate 28, the rotating plate 3 supporting the clamper 4, the large diameter disc 38, and the small diameter disc 39. In FIGS. 6A to 6E, 36
Is a stopper pin for a large-diameter disc that is planted on the lower surface of the rotating plate 3, and 37 is a stopper pin for a small-diameter disc that is implanted on the lower surface of the rotating plate 3, as shown in FIG. 6B. To
The length of the stopper pin 37 for a small diameter disc is shorter than the length of the stopper pin 36 for a large diameter disc.

In FIG. 6A, the disc inserted in the Y direction from the disc insertion hole is transferred in the Y direction by the roller 35, but the disc 38 having a large diameter is guided by the flat surface portion 29 of the guide plate 28, and the disc 38 shown in FIG. As shown in C, it is transported substantially horizontally and abuts on the stopper pin 36 to regulate its position. On the other hand, since the small-diameter disk 39 is guided by the inclined surface 30 of the guide plate 28, as shown in FIG. 6D, the disk 39 having a smaller diameter is moved upward by a predetermined angle with respect to the transfer direction of the large-diameter disk 38. Transported,
The position is regulated by making contact with the stopper pin 37. Fig. 6E
Shows the difference in the transfer direction between the large-diameter disk 38 and the small-diameter disk 39. The central axis of the large-diameter disk 38 whose position is regulated by the stopper pin 36 and the central axis of the small-diameter disk 39 whose position is regulated by the stopper pin 37 substantially coincide with the central axis of the turntable 9. Therefore, by rotating the rotating plate 3 toward the turntable 9, the large-diameter disk 38 or the small-diameter disk 39 can be pressed onto the turntable 9 by the clamper 4.

Next, a guide mechanism for guiding the inserted disc to the center in the transfer direction will be described. This guide mechanism is the first lever
11, a second lever 17, a third lever 22 and the like. 7A to 7D show the operation of the levers 11, 17, and 22 when the large-diameter disk 38 is inserted. When the large-diameter disk 38 is inserted in the Y-direction as shown in FIG. 7A, the large-diameter disk 38 is transferred in the Y-direction by the roller 35, but the large-diameter disk 38 contacts the guide pins 21 and 25. In order to make contact, the second lever 17 rotates counterclockwise about the shaft 18,
The third lever 22 rotates clockwise about the shaft 23 (FIGS. 7B and 7C). When the disk 38 is further transferred in the direction of the arrow Y, the disk 38 comes into contact with the stopper pin 36 and the disk transfer is stopped (Fig. 7D). In the disc stopped state shown in FIG. 7D, the center of the disc 38 and the center line of the turntable 9 substantially coincide with each other. After that, the rotating plate 3 is rotated and the clamper 4 presses the disk 38 onto the turntable 9 to bring it into a reproducible state. In the disc reproducing state shown in FIG. 7D, since the driving force for driving the third lever 22 in the clockwise direction acts on the third lever 22,
The guide pins 21 and 25 move to a position away from the disc 38.

8A to 8D show the operation when the disc 39 having a small diameter is inserted from the center of the disc insertion hole. in this case,
The operation is similar to the operation of the large-diameter disk shown in FIGS. 7A to 7D, but the small-diameter disk 39 is guided by the inclined surface 30 of the guide plate 28 and is transferred upward with respect to the horizontal plane, so that it is a stopper. It abuts the pin 37 and stops.

9A to 9D show the operation when the small diameter disc 39 is inserted rightward from the disc insertion hole. Fig. 9A
When a small diameter disc is inserted to the right as shown in, the disc 39 first hits the guide pin 25 of the third lever 22,
Push this guide pin 25 in the Y direction. Therefore, the third lever 22 rotates clockwise around the shaft 23. As the third lever 22 rotates clockwise, the first lever 11
Rotates slightly counterclockwise about the shaft 19 as a fulcrum, and the pin locking portion 15b of the hole 12 of the first lever 11 locks with the pin 13 planted in the upper surface chassis 1 (FIG. 9B). . Therefore, the clockwise rotation of the third lever 22 is stopped. Therefore, the disk 39 transferred in the Y direction by the roller 35 cannot move further in the Y direction, and the disk 39 transferred by the roller 35 moves leftward (center direction of the disk transfer path) with the guide pin 25 as a fulcrum. ) (Fig. 9C). When the disc 39 moves to the left, the disc 39 contacts the guide pin 21 and rotates the second lever 17 about the shaft 18 in the counterclockwise direction. When the second lever 17 rotates counterclockwise, the first lever 11 slightly rotates counterclockwise around the shaft 24, and the pin locking portion 15 of the first lever 11 is rotated.
The engagement between b and the pin 13 is released, and the third lever 22 can be rotated clockwise. By the above operation, the small-diameter disk 39 inserted to the right is moved toward the center of the disk transfer path, abuts on the stopper pin 37, and is transferred onto the center line of the turntable 9.

10A to 10D show the operation when the disc 39 having a small diameter is inserted to the left of the disc insertion hole. The small-diameter disc 39 inserted in the Y-direction is the second lever 17 first.
Abut the guide pin 21 of. Therefore, the second lever 17 rotates counterclockwise about the shaft 18. As shown in FIG. 10B, when the second lever 17 is rotated counterclockwise by being pushed by the disc 39, the first lever shaft 11 is slightly rotated counterclockwise about 24. Move the hole in the first lever 11
The pin locking portion 15a of 12 is locked to the pin 13 (Fig. 10B).
Therefore, the second lever 17 can no longer rotate counterclockwise. Therefore, the disc 39 driven in the Y direction by the roller 35 is moved toward the center of the disc transfer path with the guide pin 21 as the fulcrum (the tenth position).
(Figure C). When the disc 39 is moved toward the center of the disc transfer path, the disc 39 contacts the guide pin 25 and rotates the third lever 22 in the clockwise direction. Third lever 22
When is rotated clockwise, the first lever 11 is slightly rotated counterclockwise about the shaft 19. Therefore, the first lever 11
The lock between the pin locking portion 15a of the hole 12 and the pin 13 is released,
The second lever 17 can be further rotated counterclockwise.
By the above operation, the disc 39 inserted to the left is moved to the center of the disc transfer path, contacts the stopper pin 37, and stops the transfer in the Y direction. As mentioned above, the lever
The disk inserted by the operations of 11, 17, and 22 is transferred above the turntable while the trajectory is corrected toward the center of the disk transfer path.

In FIG. 2, reference numeral 40 denotes a lever rotatably supported on the upper surface chassis 1 by a shaft 41.
A pin 42 with which a small-diameter disk abuts, and a pin 43 with which a large-diameter disk abuts are planted in this. When the small-diameter disk transferred by the roller 35 comes into contact with the pin 42, or when the large-diameter disk comes into contact with the pin 43, the lever 40 rotates clockwise (FIG. 2). Reference numeral 44 is a slider slidably supported by the side chassis 2, and when the lever 40 is rotated clockwise by the disk, the slider 44 finely moves in the Y ′ direction by the lever 40. Therefore, the rack formed on the slider 44 meshes with a gear wheel that is rotationally driven by a motor (a motor that rotationally drives the roller 35), and the slider 44 moves in the Y ′ direction. slider
During the process in which 44 moves in the Y ′ direction, the rotating plate 3 rotates in the direction of the turntable 9 and the disk is pressed by the clamper 4 onto the turntable 9. Also, FIG. 7D,
As shown in FIG. 8D, in order to separate the guide pins 21 and 25 from the disc in the disc reproducing state,
44 sliding in Y'direction is used. In FIG.
Reference numeral 45 is a lever rotatably supported on the upper surface chassis 1 by a shaft 46, and the lever 45 is rotated by a slider 44 sliding in the Y ′ direction to drive a switch 47. The switch 47 is used as a clamp end signal for the disc by the clamper 4. Further, 48 is a switch for outputting a signal for discriminating between a small diameter disc and a large diameter disc,
The switch 48 is driven by the protrusion 11a of the first lever 11 which rotates when a large-diameter disk is inserted.

In the above embodiment, the stopper pins 36, 37 are planted in the rotary plate 3, but the stopper pins 36, 37 may be planted in the upper chassis 1. In the above embodiment, the guide device guides two types of discs having different diameters. However, the number of disc guide faces is not limited to two, and three or more types can be formed by forming a plurality of disc guide surfaces having different inclination angles. It is also possible to implement it as a guide device for disks having different diameters.

EFFECTS OF THE INVENTION The present invention is configured as described above, and is configured to guide disks having different diameters by disk guide surfaces having different angles, and to rotate position restriction means such as a stopper pin that restricts disk transfer. There is an advantage that the structure of the position regulating means is simplified without the need to move it.

[Brief description of drawings]

FIG. 1 is a front view of a disc reproducing device equipped with a disc guide device according to an embodiment of the present invention, FIG. 2 is a top view of the same device, FIG. 3 is a bottom view of a main part of the same device, and FIG. Is a view showing the shape of the hole of the first lever of the device, FIG. 5A is a plan view of the guide plate of the device, FIG. 5B is a sectional view taken along the line AA of FIG. 5A,
5C is a sectional view taken along the line BB in FIG. 5A, FIG. 6A is a bottom view of the main part of the apparatus, FIG. 6B is a side view of FIG. 6A, and FIG.
D and E are views showing the function of the guide plate of the same device, and FIG. 7A to FIG.
D, FIGS. 8A to D, FIGS. 9A to D, and FIGS. 10A to 10D are operation explanatory views of the apparatus. 1 ... Top chassis, 2 ... Side chassis, 3 ... Rotating plate, 4 ... Clamper, 5 ... Shaft, 6 ... Board, 7 ...
Motor, 8 ... Damper, 9 ... Turntable, 10 ...
… Disk, 11 …… first lever, 12 …… hole, 13 …… pin, 14 …… guide groove, 15a, 15b …… pin locking part, 16a, 1
6b …… Inclined part, 17 …… Second lever, 18 …… Axis, 19 ……
Pins, 20 ... Arc holes, 21 ... Guide pins, 22 ... Third lever, 23 ... Shafts, 24 ... Pins, 25 ... Guide pins, 26 ... Arc holes, 27 ... … Spring, 28 …… Guide plate, 29 …… Plane part, 30, 31, 32 …… Inclined surface, 33 …… Recessed part, 34 …… Restricting piece, 35 …… Roller, 36, 37 …… Stopper pin, 38 ...... Large diameter disc, 39 …… Small diameter disc, 40 …… Lever, 41 …… Shaft, 42,43 …… Pin, 44 ……
Slider, 45 …… Lever, 46 …… Axis, 47,48 …… Switch.

Claims (4)

[Claims] 1. A plurality of disk guide surfaces for guiding a disk transferred along a disk transfer path according to the disk diameter, a plurality of position restricting means for restricting the position of the disk guided by each of the disk guide surfaces, and A disc guide device, comprising: a rotation drive unit that rotationally drives discs having different diameters whose positions are regulated by each position regulation unit, wherein the plurality of disc guide surfaces have different angles. 2. A first disk guide surface for guiding a small-diameter disk transferred through a disk transfer path; a second disk guide surface for guiding a large-diameter disk transferred through the disk transfer path; First position regulating means for regulating the position of the small diameter disc guided by the first disc guide surface, and second position regulating means for regulating the position of the large diameter disc guided by the second disc guide surface, The first disk guide, comprising: a rotation drive means for rotationally driving the small diameter disk whose position is restricted by the first position restricting means or the large diameter disk whose position is restricted by the second position restricting means. A disc guide device, wherein the angle between the surface and the second disc guide face is different. 3. A first disc guide surface for guiding a small-diameter disc is formed at the center of a guide plate having a width at least equal to the diameter of the large-diameter disc, and the first disc guide of the guide plate is formed. 3. The disk guide device according to claim 2, wherein second disk guide surfaces for guiding a large-diameter disk having an angle different from that of the first disk guide surface are formed on both sides of the surface. 4. A track correcting means for correcting a track of a disk transferred through the disk transfer path to the center of the disk transfer path, and a plurality of disk guides for guiding the disk according to the disk diameter of the disk transferred through the disk transfer path. A surface, a plurality of position regulating means for regulating the position of the disc guided by each disc guide surface, and a rotation driving means for rotationally driving the discs of different diameters which are regulated by the position regulating means, A disc guide device, wherein the plurality of disc guide surfaces have different angles.