JPH03296961A - Disk guiding device - Google Patents

Abstract

PURPOSE:To correct the loading direction of a disk inserted in a deviated direction by rotating a 2nd or 1st lever by a disk moving in using a guide pin as a fulcrum in the center direction of a loading route and releasing the regulation of turning by the turn of the lever. CONSTITUTION:The disk guiding device is provided with the 3rd lever 22 connected to the 1st and 2nd levers 11, 17 and a turn regulating means for regulating the turn of the 1st or 2nd lever 11 or 17 when the 1st or 2nd lever 11, 17 is pressed by the disk 17 and turned by a prescribed angle. The regulation of turn by the turn regulating means is released by the rotation of the 2nd or 1st lever 17 or 11 pressed by the disk moved to the center direction of the disk loading route around the guide pin 21 of the 1st or 2nd lever 11 or 17 whose turn is regulated by the turn regulating means. Thereby, the loading route of the disk 38, 39 inserted in the deviated direction can be corrected in the center direction of the disk loading route.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a disc guide device used in a compact disc player, etc., and particularly to a disc playback device used in a disc playback device that rotationally drives discs of different diameters by a common rotational drive mechanism. Regarding a guide device.

Conventional technology Conventionally, 8-inch diameter connoct disc or 12-inch diameter
A disc playback device has been put into practical use that plays a compact disc of the same diameter by holding it between the same turntable and clamper and driving it to rotate.

In this way, in a disc playback device that plays back large-diameter discs and small-diameter discs using the same disc rotation drive mechanism, it is possible to prevent the small-diameter disc from being inserted into the center of the disc insertion hole. , the disk may be inserted to the right or left of the disk insertion hole. For this reason, this type of device is equipped with a disk guide device for correcting the trajectory of a small-diameter disk inserted to the right or left of the disk insertion hole toward the middle east of the disk transfer path.

Problems to be Solved by the Invention However, the conventional disk guiding device described above had a complicated structure.

The present invention eliminates the above-mentioned conventional problems, and provides a disk guide device with a simple configuration that corrects the trajectory of a disk inserted in a biased manner toward the center of the transfer path.

Means for Solving the Problems In order to achieve the above object, the present invention includes rotatable first and second levers having guide pins against which a disk abuts, and a rotatable lever connected to the first and second levers. a third lever; and a turn that restricts rotation of the first lever or the second lever when the first lever or the second lever is pushed by the disk and rotates by a predetermined angle. movement regulating means, the first lever or the second lever, whose rotation is regulated by the rotation regulating means, is pushed by a disk that is moved toward the center of the disk transport path using the guide pin of the second lever as a fulcrum. The invention is characterized in that rotation restriction of the rotation restriction means is released by rotation of the second lever or the first lever.

Function The present invention has the above-mentioned configuration, and the disk inserted to the right or left of the disk insertion hole is rotated using the guide pin of the first or second lever as a fulcrum whose rotation is restricted by the rotation restriction means. The disc is moved toward the center of the transfer path, and the second or first lever is rotated by the disk that is further moved toward the center. Since the restriction on rotation of the lever is released, the trajectory of the disk that has been inserted lopsidedly is corrected in the transport direction.

EXAMPLE An example of the present invention will be described below with reference to FIGS. 1 to 4. In FIGS. 1 to 4, 1 is a top chassis, and 2 is a side chassis. The top chassis 1 and the side chassis 2 are fixed with screws. A rotating plate 3 is rotatably supported on the upper chassis 1 by shafts 3a and 3b, and a clamper 4 is rotatably supported by a shaft 5 at the tip of the rotating plate 3. 6 is a board to which a motor 7 is fixed, and this board 6 is supported by the side chassis 2 by a damper 8 made of rubber. 9 is a turntable fixed to the rotating shaft of the motor 7, and the hole edge of the center hole of the disk IO inserted through the disk insertion hole (not shown) is held between 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 explained.

A first lever 11 is slidably supported on the outer surface of the upper chassis 1, and a hole 12 is formed approximately in the center of the first lever 11. 13 is the top chassis 1
This pin 13 is inserted into the hole 12 of the first lever 11. The first lever 11
The shape of the hole 12 is an arrow shape as shown in FIG.
A guide groove 14 into which the pin 13 implanted in the upper chassis 1 is inserted, pin locking parts 15a and 15b formed on both sides of the opening of the guide groove 14, and an inclined part 16a.
Consisting of 16b. 17 is the pongee 1 on the bottom side of the top chassis l.
A second lever 17 is rotatably supported at 8, and one end of the second lever 17 is connected to one end of the first lever 11 by a pin 19. 20 is an arc-shaped hole formed in the upper chassis 1, and the pin 19 is connected to the hole 2.
0, the first lever 11 and the second lever 17 are connected. 21 is a guide pin provided at the other end of the second lever 17. A third lever 22 is rotatably supported on the lower side of the upper chassis 1 by a shaft 23, and a pin 24 connects both ends of the third lever 22 and one end of the first lever 11. connected. 25 is a guide pin provided at the other end of the third lever 22, and this guide pin 25 is inserted into the arc-shaped hole 2 formed in the upper chassis 1.
The first lever 1 and the third lever 22 are connected via a lever 6. Reference numeral 27 denotes a spring whose one end is locked to the third lever 22 and the other end is locked to the upper chassis 1, and the elastic force of this spring 27 causes the third lever 22 to move counterclockwise (Fig. 3). ) is energized. 28 is a guide plate fixed to the lower surface side of the upper chassis 1, and the second lever 17 and the third lever 22 are connected to the gap formed between the lower surface of the upper chassis 1 and the guide plate 28. Rotate within. In FIG. 3, the attachment points of the guide plate 28 are indicated by broken lines. 5A, B, and C show the guide plate 28. FIG. In FIG. 5, 29 is a U-shaped flat surface, 30 is a U-shaped slope inclined from the side 29a of the flat surface 29 in the direction of arrow Y, and 31 is the side 2 of the flat surface 29.
A second inclined surface 32 connects the inclined surface 30 to the side 29 b of the flat portion 29 . 33 is a concave portion for a rubber roller formed in the flat portion 29, and 34 is a regulating piece that regulates the transfer range of the disk. In addition, FIG. 5B shows the AA cross section of FIG. 5A, and FIG. 5C shows the BB cross section of FIG. 5A. Further, in FIGS. 5B and 5C, 35 is a rubber roller, and this roller 35 is rotationally driven by the rotational driving force of a motor (not shown). A disk inserted in the Y direction from the disk insertion opening enters between the roller 35 and the guide plate 28, and is transported in the Y direction by the rotational driving force of the roller 35.

6A to 6E show the relationship between the guide plate 28, the rotary plate 3 supporting the clamper 4, the large diameter disk 38, and the small diameter disk 39.

In FIGS. 6A-E, 36 is a stopper pin for a large-diameter disk installed on the lower surface of the rotating plate 3, and 37 is a stopper pin for a small-diameter disk installed on the lower surface of the rotating plate 3. As shown in FIG. 6B, the length of the stopper pin 37 for small-diameter disks is shorter than the length of the stopper pin 36 for large-diameter disks.

In FIG. 6A, the disk inserted in the Y direction from the disk insertion hole is transported in the Y direction by the roller 35, but the large diameter disk 38 is guided by the flat part 29 of the guide plate 28, as shown in FIG. As shown in C, it is transported almost horizontally and its position is regulated by coming into contact with the stopper pin 36. On the other hand, since the small-diameter disk 39 is guided by the inclined surface 30 of the guide plate 28, it is moved upward at a predetermined angle with respect to the transport direction of the large-diameter disk 38, as shown in Figure 6. It is transferred and its position is regulated by coming into contact with the stopper pin 37. Figure 6 E shows the large diameter disc 38 and the small diameter disc 3.
This shows the difference in the transfer direction from 9. Stopper pin 3
6 and the center axis of the large diameter disk 38 whose position is regulated by the stopper pin 37, and the small diameter disk 3 whose position is regulated by the stopper pin 37.
The center axis of the turntable 9 substantially coincides with the center 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 that guides the inserted disk to the center in the transport direction will be explained. This guide mechanism is connected to the first lever 1
1, a second lever 17, a third lever 22, etc. 7A to 7D show the operation of the levers 11, 17, 22 when a large diameter disk 38 is inserted. 7th
When the large-diameter disk 38 is inserted in the Y direction as shown in FIG.
．． 25, the second lever 17 rotates counterclockwise about the shaft 18, and the third lever 22
rotates clockwise around the shaft 23 (Fig. 7B,
C). When the disk 38 is further transferred in the direction of arrow Y,
The disk 38 comes into contact with the stopper pin 36 and the movement of the disk is stopped (FIG. 7D). In the disk stopped state shown in Figure 7, the center of the disk 38 and the center line of the turntable 9 almost coincide. Thereafter, the rotary plate 3 rotates, and the disc 38 is pressed onto the turntable 9 by the clamper 4, making it ready for playback. Note that in the disc playback state shown in the seventh diagram, a driving force is applied to the third lever 22 to drive the lever clockwise, so that the guide pin 21.25 moves to a position away from the disc 38.

FIGS. 8A to 8D show the operation when a small-diameter disk 39 is inserted from the center of the disk insertion hole. in this case,
The operation is similar to that of the large-diameter disk shown in FIGS. 7A-D, but the small-diameter disk 39
, and is transported upward relative to the horizontal plane.
It comes into contact with the stopper pin 37 and stops.

FIGS. 9A to 9D show the operation when a small-diameter disk 39 is inserted from the disk insertion hole toward the right. Figure 9A
When a small-diameter disk is inserted toward the right as shown in FIG. 3, the disk 39 first hits the guide pin 25 of the third lever 22 and pushes the guide pin 25 in the Y direction. For this reason,
The third lever 22 rotates clockwise about the shaft 23. As the third lever 22 rotates clockwise,
The first lever 11 rotates slightly counterclockwise about the shaft 19, and the pin locking portion 15b of the hole 12 of the first lever 11
is engaged with a pin 13 implanted in the upper 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 can no longer move in the Y direction, and the disk 39 transferred by the roller 35 can no longer move in the Y direction.
moves to the left (toward the center of the disk transport path) using the guide pin 25 as a fulcrum (FIG. 9C). disk 39
When the disk moves to the left, the disc 39 moves to the guide pin 2.
1 and rotates the second lever 17 counterclockwise about the shaft 18. When the second lever 17 rotates counterclockwise, the first lever 11 slightly rotates counterclockwise about the shaft 24, and the pin locking portion 15b of the first lever 11 and the pin 13 is released, and the third lever 22 can be rotated clockwise. By the above-described operation, the small-diameter disk 39 inserted toward the right is moved toward the center of the disk transfer path, comes into contact with the stopper pin 37, and is transferred onto the center line of the turntable 9.

FIGS. 10A to 10D show the operation when a small-diameter disk 39 is inserted to the left of the disk insertion hole. The small diameter disk 39 inserted in the Y direction first comes into contact with the guide pin 21 of the second lever 17 . Therefore, the second lever 17 rotates counterclockwise about the shaft 18.

'As shown in IPIIO diagram B, when the second lever 17 is pushed by the disk 39 and rotates counterclockwise, the first lever shaft 11 slightly rotates counterclockwise around 24. The peer locking portion 15a of the hole 12 of the first lever 11
is locked to the pin 13 (FIG. 10B).

Therefore, the second lever 17 can no longer be rotated counterclockwise. Therefore, the disk 39 being driven in the Y direction by the roller 35 is moved toward the center of the disk transport path using the guide pin 21 as a fulcrum (101st!Ic).

As the disk 39 is moved towards the center of the disk transport path, the disk 39 comes into contact with the guide pin 25 and the third
Rotate the lever 22 clockwise. Third lever 2
2 rotates clockwise, the lever 11 of the jll moves to the pongee 1
Slightly rotate counterclockwise around 9. Therefore, the pin 13 is disengaged from the pin 13 in the hole 12 of the first lever 11, and the second lever 17 can be further rotated counterclockwise. Through the above operations, the disk 39 inserted toward the left is moved to the center of the disk transfer path, and
It contacts the stopper pin 37 and stops moving in the Y direction. As described above, the disk inserted by the operation of the levers 11, 17, and 22 is transferred above the turntable while being corrected in trajectory toward the center of the day and second transfer paths.

In FIG. 2, reference numeral 40 is a lever rotatably supported on the upper chassis 1 by a shaft 41, and this lever 40 has a pin 42 on which a small-diameter disk comes into contact, and a pin 42 on which a large-diameter disk comes into contact. A contacting pin 43 is implanted. 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). A slider 44 is slidably supported by the side chassis 2, and when the lever 40 is rotated clockwise by the disk, the lever 40 slightly moves the test slider 44 in the Y° force direction. Therefore, the rack formed on the slider 44 meshes with a gear rotationally driven by a motor (a motor that rotationally drives the roller 35), and the slider 44 moves in the Y' direction. In the process of the slider 44 moving in the Y' direction, the rotating plate 3 rotates in the direction of the turntable 9, and the disc is moved by the clamper 4 onto the turntable 9.
Press upward. Further, as shown in the seventh and eighth diagrams, the sliding movement of the slider 44 in the Y° force direction is used to separate the guide pins 21.25 from the disc in the disc playback state. In FIG. 2, reference numeral 45 denotes a lever rotatably supported on the upper chassis 1 by a shaft 46, and this lever 45 is connected to the slider 4 that slides in the Y° force direction.
4 to drive the switch 47. This switch 47 is used as a signal for the clamper 4 to finish clamping the disk. 48 is a switch that outputs a signal for distinguishing between a small-diameter disk and a large-diameter disk;
This 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 implanted in the rotating plate 3.
7 can also be implanted in the upper chassis 1. Further, in the above embodiment, the guide device guides two types of disks with different diameters, but the guide device is not limited to two types, and by forming a plurality of disk guide surfaces with different inclination angles, three types of disks can be guided. It is also possible to implement the guide device for disks having different diameters as described above.

Effects of the Invention The present invention has the above-mentioned configuration, and has the advantage that a disk inserted into the disk insertion hole with a biased position can be corrected toward the center of the disk transfer path with a simple configuration combining three levers. has.

[Brief explanation of drawings]

FIG. 1 is a front view of a disc playback device equipped with a disc guiding 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 essential parts of the device, and FIG. 4 is a diagram showing the shape of the hole of the first lever of the same device, FIG. 5A is a plan view of the guide plate of the same device, FIG. 5B is a sectional view taken along line AA in FIG. 5A,
FIG. 5C is a sectional view taken along line BB in FIG. 5A, FIG. 6A is a bottom view of the main parts of the device, FIG. 6B is a side view of FIG. 6A, FIGS. 6C and D, E is a diagram showing the function of the guide plate of the same device, Fig. 7 A-D, Fig. 8 A-D, Fig. 9 A-D, and Fig. 10 A-
D is an explanatory diagram of the operation of the device. 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 portion, 16a, 16b
・・Inclination part, 17・・Second lever 18...Shaft, 19...Pin, 20...Circular hole, 21...
Guide pin, 22...Third lever 23...Shaft,
24... Pin, 25... Guide pin, 26... Arc-shaped hole, 27... Spring, 28... Guide plate, 29... Flat part, 30. 31. 32... - Inclined surface ,3
3. ・Recess, 34. ・Regulation piece, 35. Roller, 36
．． 37. Stopper pin, 38... Large diameter disc, 39... Small diameter day, Suf, 40... Lever 41... Shaft, 42.43... Pin, 44... Slider 45...l/bar 46...shaft, 47.
48...Switch.

Claims (1)

[Claims] (1) Rotatable first and second levers having guide pins that the disk abuts, a third lever connected to the first and second levers, and the first lever or the third lever; a rotation regulating means for regulating the rotation of the first lever or the second lever when the second lever is pushed by the disk and rotated by a predetermined angle; The rotation of the second lever or the first lever, which is pushed by the disk that is moved toward the center of the disk transfer path using the guide pin of the first lever or the second lever whose movement is restricted as a fulcrum, causes the above-mentioned A disk guide device characterized in that rotation restriction of a rotation restriction means is released. (2) The disk guide device according to claim 1, wherein the rotation regulating means is constituted by a pin implanted in the fixing portion and a third lever having a pin locking portion capable of locking the pin. .