JPH04307461A - disc loading device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disc loading device for an autoloading disc player having a positioning mechanism for discs of different diameters.

0002

2. Description of the Related Art In recent years, various disc reproducing apparatuses have been proposed and put into practical use, but in order to reproduce them, a disc loading apparatus is required for transporting and positioning the disc onto the turntable of the reproducing means. Incidentally, among such disk loading devices, those having a positioning mechanism that can be commonly used for disks with different outer diameters generally have a complicated structure.
For example, a mechanism as described in Japanese Patent Publication No. 62-27463 has been proposed.

[0003] This mechanism is composed of two racks that interlock in opposite directions in the left-right direction, and includes two guide members that abut the outer periphery of the inserted disk, and two guide members that abut the outer periphery of the disk and move rearward. It includes a detection pin that interlocks with a slide stopper that moves in the front-rear direction, and a guide wall that is provided on the slide stopper in the direction of movement of the slide stopper and that is in contact with a lock pin provided on one of the racks. Further, the detection pin is provided on the rotating detection arm, and the drive pin of the detection arm is engaged with the guide groove so as to be movable in the left and right directions with respect to the slide stopper, and the drive pin of the detection arm is engaged with the guide groove so as to be able to move the inserted disk in the direction of the slide stopper. It is designed to be positioned at a constant position regardless of size.

0004

[Problems to be Solved by the Invention] However, the conventional disc loading device as described above still has the problems of being large and having a complicated structure, which makes it difficult to work with, and its operation is unreliable. there were.

In view of the above-mentioned conventional problems, the present invention is a loading device for disks of different diameters, which can be constructed easily and compactly, and which can transfer and position disks with simple operations and has high operational reliability. This was done with the purpose of providing a high-performance disk loading device.

[0006]

[Means for Solving the Problems] In order to solve the above problems, the disc loading device of the present invention has a front opening into which a disc can be inserted, and a disc loading device arranged inside the front opening to transport the disc inward. a small-diameter disk locking portion that is substantially on the same plane and corresponds to the outer circumferential curved surface of the small-diameter disk so that the small-diameter disk transferred in a substantially horizontal direction by the transfer roller comes into contact with the small-diameter disk; A large-diameter disk escape means for escaping contact with the small-diameter disk locking portion, a large-diameter disk locking portion provided to bring the large-diameter disk into contact, and abutment against both the disk locking portions. It is equipped with playback means consisting of a turntable, a damper, etc. corresponding to the position of the disc in contact with the disc.

[0007]

[Operation] With the above-described structure, the present invention allows the small-diameter disc to be locked to the small-diameter disc locking part when loading the disc, but the large-diameter disc is caused to escape from the small-diameter disc locking part by the escape means, and further forward. It is possible to position each disk by transferring it to the large-diameter disk locking part and locking it in the large-diameter disk locking part. Therefore, by simply inserting a large-diameter or small-diameter disk into the front opening, the disk can be positioned at a predetermined position. This means that it can be transferred and positioned to the regeneration means section of the.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the disc loading device of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a side sectional view (cross section taken along line X--X in FIG. 2) of a disk loading device according to a first embodiment of the present invention, FIG. 2 is a front view thereof, and FIG. 3 is a cross-sectional view taken along line Y--Y in FIG. FIG. 4 is a bottom view showing the relationship between the arm and the interlocking lever, and the first embodiment will be described below with reference to FIGS. 1 to 4 showing the first embodiment.

In the figure, 1 is a player cabinet, and the front side thereof has a front opening 1a into which a disc is inserted.
is provided. Reference numeral 2 denotes a top plate provided inside the player cabinet 1, and a disc guide plate 3 is attached to the top plate 2, as well as a mechanism for detecting the size and positioning of the disc inserted through the opening 1a. (described later) is provided. At the bottom thereof, a transfer roller 4 for transferring the disk is provided at the opening 1a.
A turntable 5 is provided behind the transfer roller 4, and a motor 5a for driving the turntable 5 and a substrate 6 for fixing these are provided below the turntable 5. is provided. Further, above the turntable 5, there is provided a clamper 7 for positioning and holding the inserted disk on the turntable 5 through its center hole, and the clamper 7 rotates on the base plate 6 about a shaft 8a. It is supported by the clamper arm 8.

The disc guide plate 3 has a pair of small-diameter disc locking parts 9 provided at its tip, and also has a bulge 3a formed between the opening 1a and the transfer roller 4. By this bulging portion 3a and the transfer roller 4, the inserted disk is transferred in a substantially horizontal direction while contacting the flat portion 3b of the disk guide plate 3.

Between the top plate 2 and the disk guide plate 3, there is a pair of arms 10 and 11;
, 11 and an interlocking lever 12 that opens and closes in conjunction with each other to form a large-diameter disk escape means (see Fig. 4).
. The arms 10 and 11 have shafts 10a provided on the top plate 2,
Escape guides 10c, 11c are rotatable around centering point 11a, and guide pins 10b, 11b are provided at one end on the opening 1a side, and protruding escape guides 10c, 11c have an inclined portion for large-diameter disk escape at the other end, which is the tip. has been established. The interlocking lever 12 is connected by shafts 12a and 12b so as to rotate the arms 10 and 11 in opposite directions, and is connected by a spring 12c interposed between the arm 10 and the pin 2a provided on the top plate 2. It is always urged in the direction of arrow S, and is stabilized at the positions of guide pins 10b and 11b as shown in FIG. Here, the guide pins 10b, 11b
As is clear from FIGS. 1 and 2, the disc is located at a position facing the opening 1a and is arranged so as to abut the outer periphery of the disk inserted into the opening 1a, and the stability shown in FIG. The dimension H between the two in this state is set to be slightly smaller than the diameter of the small diameter disk. Further, as shown in FIG. 1, the escape guides 10c and 11c have an inclined portion on the insertion side, and are projected at least as high as the height of the small-diameter disk locking portion 9.

Reference numeral 13 denotes a large-diameter disk locking portion provided integrally with the clamper arm 8, and the escape guide 10c,
11c, the outer periphery of the large-diameter disk that has been transferred without being locked by the small-diameter disk locking portion 9 comes into contact.

Reference numeral 14 denotes a microswitch for detecting the insertion of a disc, and although it is pressed by the side surface of the arm 11 in the above-mentioned stable state and is in the ON state, the guide pins 10b and 11b are expanded when a disc is inserted. As a result, the microswitch 14 is turned off and its insertion is detected. Further, 15a, 15b, and 15c are phototransistors provided on the top plate 2, which can detect a light source (not shown) such as a light emitting diode provided below, and can detect the type of disc inserted. It performs discrimination and detects the completion of positioning.

The operation of the disk loading device of the first embodiment constructed as described above will be explained below with reference to FIGS. 5 and 6.

First, loading of the small diameter disk A will be explained based on FIG. Insert small diameter disc A into opening 1
The moment when the microswitch 14 is inserted from A and touches the guide pins 10b and 11b is the position A1. When the microswitch 14 is inserted further from this position, the guide pins 10b and 11b are expanded, and at that time the microswitch 14 is rotated by the arm 11. When the microswitch 14 is turned OFF, the transfer roller 4 starts driving, and when the tip of the small diameter disk A is inserted to the position where it touches the transfer roller 4, the small diameter disk A is further transferred by the transfer roller 4. be done. and,
When the small-diameter disk A passes through the intermediate position A2 and is transferred to the A3 position, it comes into contact with the small-diameter disk locking portion 9, and at this position, the phototransistors 15b and 15c are blocked from the light source by the small-diameter disk A. Then, the completion of positioning of the small-diameter disk A is detected, and the clamper 7 clamps it onto the turntable 5, thereby making it possible to reproduce it. It goes without saying that the transport roller 4 must be retracted from the small-diameter disk A when performing this reproduction.

Next, loading of the large diameter disk B will be explained based on FIG. Opening 1 of large diameter disc B
The moment when the disk is inserted from point a and comes into contact with the guide pins 10b and 11b is position B1, and as with the insertion of the small diameter disk A described above, when the disk is inserted further from this position, the guide pins 10b and 11b are expanded. At this time, the microswitch 14 is turned OFF by the rotation of the arm 11, and when the microswitch 14 is turned OFF, the transfer roller 4 starts to be driven, and the large diameter disk B is inserted to the position where the leading end contacts the transfer roller 4. Then, the large diameter disk B is further transferred by the transfer roller 4. When inserting the disk, the guide pin 10 is smaller than when inserting the small diameter disk A.
b, 11b are greatly expanded and transferred to the position B2, the tip of the large diameter disk B touches the guide pin 10.
b and 11b come into contact with escape guides 10c and 11c whose spacing is narrowed in accordance with the expansion. Due to this contact, the large diameter disc B is guided downward along the inclined part in the state shown in FIG. The disk is transferred without being moved, and finally comes into contact with the large-diameter disk locking portion 13. At this position, the phototransistor 15a,
15b and 15c are all shielded from the light source by the large-diameter disk B, and the microswitch 14 has returned to the ON state, so that the completion of positioning of the large-diameter disk B is detected, and the clamper 7 moves it to the turntable 5. It is possible to perform the clamping and playback. It goes without saying that the transfer roller 4 must be retracted from the large-diameter disk B when performing this reproduction.

Next, a second embodiment will be explained based on FIGS. 7 to 10. 7 is a partially developed perspective view showing a top plate, a disk guide plate, and members between them of a disk loading device according to a second embodiment of the present invention, FIG. 8 is a partially enlarged perspective view, and FIG. 9 is a Y-- FIG. 10 is an explanatory diagram showing the relationship between the arm and the interlocking lever seen from below, and FIG. 7 is a bottom view as seen from the Y-line.
- Explanation will be made based on FIG. 10. In this second embodiment, the specific configuration of the large-diameter disk escape means is changed from the above-described first embodiment, and the same components will be described using the same reference numerals.

The disc guide plate 3 is provided with a small-diameter disc locking portion 16, a small-diameter disc guide 16a that is continuous with the locking portion 16 and guides the small-diameter disc A, and a through hole 17 for a movable guide to be described later. A pair of arms 18 and 19 are provided between the disc guide plate 3 and the top plate 2.
and an interlocking lever 20. The arm 18,
19 is rotatable around shafts 18a and 19a provided on the top plate 2, respectively, and a guide pin 1 is attached to one end of the shaft.
8b, 19b, and in order to make the guide pins 18b, 19b expandable, a shaft 20a provided on the interlocking lever 20 is provided.
, 20b, so that the guide pins 18b and 19b can rotate in opposite directions. Furthermore, the interlocking lever 20 can be slid by fitting a shaft 20c provided on the top plate 2 into a long hole 20d and a shaft 19a into a long hole 20e using these as a guide, and furthermore, this interlocking lever The microswitch 14 is turned on and off by a protrusion 20f formed on the microswitch 20.

The arms 18 and 19 have movable guides 2
The movable guide 21 has a guide wall surface 21a on which the small-diameter disk A is guided, as shown in FIG.
A slope portion 21b is formed for allowing the large-diameter disk B to escape. And arms 18, 19 and guide pin 18b
, 19b are normally in a stable state in the position shown in FIG. 10 due to the biasing force of the spring 22.

[0021] Also in this second embodiment, the clamper arm 8 (not shown) is provided with a large-diameter disk locking portion 13, as in the above-mentioned first embodiment, and the above-mentioned movable guide 21, the large-diameter disk B that has escaped is brought into contact with the large diameter disk B. Further, as described above, phototransistors 15a, 15b, and 15c are provided on the top plate 2, and a light source (not shown) such as a light emitting diode provided below can be detected, and an inserted disc can be detected. This function determines the type of positioning and detects the completion of positioning.

The operation of the second embodiment of the disk loading device constructed as described above will be described below with reference to FIG.
This will be explained based on FIGS. 1 to 15.

First, loading of the small diameter disk A will be explained based on FIGS. 11 to 13. Insert the small diameter disk A through the opening 1a and tighten the guide pins 18b and 19.
The moment when the guide pins 18b and 19b contact b is the position shown in FIG. 11, and when the guide pins 18b and 19b are inserted further from this position, they are expanded.
At this time, the microswitch 14 is turned on by moving the protrusion 20f of the interlocking lever 20 in the right direction in the figure, and by turning on the microswitch 14, the transfer roller 4 starts driving, and the tip of the small diameter disk A is brought into contact with the transfer roller 4. When the small diameter disk A is inserted to the contact position, the small diameter disk A is further transferred by the transfer roller 4. Here, small diameter disk A
12, if the arms 18, 19 and the guide pins 18b, 19b are widened, as shown in FIG. At this time, the small-diameter disk A comes into contact with the guide wall surface 21a of the movable guide 21 and is guided while
It is further transferred by driving the transfer roller 4. When the small-diameter disk A is transferred to the position shown in FIG. Detecting the completion of the positioning, the clamper 7 clamps the turntable 5 and the playback becomes possible. It goes without saying that the transport roller 4 must be retracted from the small-diameter disk A when performing this reproduction.

Next, loading of the large diameter disk B will be explained based on FIGS. 14 and 15. Insert the large diameter disk B through the opening 1a and guide pins 18b, 19
b is expanded and transferred by the transfer roller 4, and the moment when the outer periphery of the large-diameter disk B comes into contact with the inclined part 21b of the movable guide 21 is the position shown in FIG. Even if the leading end portion is guided downward along the inclined portion 21b in the state shown in FIG. Finally, as shown in FIG.
It will come into contact with 3. In this position, all of the phototransistors 15a, 15b, and 15c are shielded from the light source by the large-diameter disk B, and the microswitch 14
By returning to the OFF state, it is detected that the positioning of the large-diameter disk B has been completed, and the clamper 7 clamps the turntable 5 to enable its reproduction. When performing this reproduction, the transfer roller 4
Of course, it is necessary to evacuate the area.

[0025]

As described above, in the present invention, when loading a disk, a small-diameter disk is locked in the small-diameter disk locking portion, while a large-diameter disk is caused to escape from the small-diameter disk locking portion by the escape means. Each disk can be positioned by moving it further to the back and locking it in the large-diameter disk locking part. Therefore, by simply inserting the large-diameter or small-diameter disk into the front opening, both of the disks can be positioned. It is possible to provide a highly reliable disc loading device that can transport and position each disc to a reproducing means part at a predetermined position, can be miniaturized with a simple configuration, and has reliable operation. It is possible.

[Brief explanation of drawings]

FIG. 1 is a side sectional view showing a disk loading device in a first embodiment of the present invention.

[Figure 2] Front view of the same

[Fig. 3] Bottom view taken along the Y-Y line in Fig. 2

[Figure 4] Bottom view showing the relationship between the arm and the interlocking lever

[Figure 5] Explanatory diagram of the loading state of the small diameter disc

[Fig. 6] Explanatory diagram of the loading state of the large diameter disc

FIG. 7 is a partially exploded perspective view showing a top plate, a disk guide plate, and members between the two of a disk loading device according to a second embodiment of the present invention.

[Figure 8] Enlarged perspective view of the same part

[Fig. 9] Bottom view taken along the Y-Y line in Fig. 2

[Fig. 10] An explanatory diagram showing the relationship between the arm and the interlocking lever as seen from below.

[Figure 11] An explanatory diagram of the insertion start position when loading the same small diameter disc

[Fig. 12] An explanatory diagram of the position of the same small-diameter disk during the loading process.

[Fig. 13] Explanatory diagram of the positioning completion position during loading of the same small diameter disc

[Fig. 14] An explanatory diagram of the position during transport during loading of the same large-diameter disk.

[Fig. 15] Explanatory diagram of the positioning completion position when loading the same large diameter disk

[Explanation of symbols]

A Small diameter disc B Large diameter disc 1a Opening 2 Top plate 3 Disc guide plate 4 Transfer roller 5 Turntable 7 Clamper 9, 16 Small diameter disc locking part 10, 11, 18, 19 Arm 10b, 11b, 18b, 19b Guide pin 10c
, 11c Large-diameter disk escape guide 12, 20
Interlocking lever 13 Large-diameter disk locking portion 14 Microswitches 15a, 15b, 15c Phototransistor 21
Movable guide 21a Guide wall surface 21b Escape guide slope

Claims (9)

[Claims] Claims: 1. A front opening into which a disk can be inserted; a transfer roller disposed inside the front opening for transferring the disk inward; and a small-diameter disk transferred approximately horizontally by the transfer roller. A small-diameter disk locking portion that is substantially on the same plane and corresponds to the outer circumferential surface of the small-diameter disk for contact, and a large-diameter disk escape means for escaping the contact of the large-diameter disk with the small-diameter disk locking portion. and a large-diameter disc locking part provided to bring the large-diameter disc into contact with the disc, and a playback means comprising a corresponding turntable, clamper, etc. at the position of the disc that is brought into contact with both of the disc locking parts. A disc loading device characterized by comprising: 2. In claim 1, the large-diameter disk escape means includes a guide pin that faces the front opening and is freely expandable by the inserted disk, and a guide pin that is provided at one end and is rotatable at the center thereof. 1. A disc loading device comprising: an arm supported at the arm; and an escape guide provided at the other end of the arm to guide an inserted large-diameter disc to escape from a small-diameter disc locking portion. 3. In claim 2, when the small diameter disk is inserted, the escape guide is not brought to the transfer path from the insertion position of the small diameter disk to the locking part position, but the escape guide is guided by the insertion of the large diameter disk. A disk characterized in that when the pin is expanded, the large-diameter disk is brought to the front of the transfer path of the large-diameter disk, and the escape guide causes the large-diameter disk to escape from being locked in the small-diameter disk locking portion. Loading device. 4. According to claim 2 or 3, the dimension between both guide pins is configured to be slightly smaller than the diameter of the small diameter disk, and a switch is provided that opens and closes in conjunction with the expansion operation of the guide pin, and the disk A disc loading device characterized in that it detects insertion of a disc. 5. According to claim 1, a plurality of photoelectric detection elements are provided in the transportation path of the disk to detect the presence of the disk by being blocked from light by the disk,
The plurality of photoelectric detection elements are arranged and configured so that the detection states of the plurality of photoelectric detection elements are different in each of the state in which the small-diameter disk is locked to the small-diameter disk locking portion and the state in which the large-diameter disk is locked in the large-diameter disk locking portion. A disc loading device characterized in that the type and positioning of the inserted disc are determined based on the detection state of the photoelectric detection element. 6. According to claim 1, a plurality of switches are provided that operate to open and close in conjunction with the expansion operation of the guide pin, and the presence of the switch is detected by being optically blocked by the disk during the transport path of the disk. A detection state of the plurality of photoelectric detection elements is provided, and the detection state of the plurality of photoelectric detection elements is determined in each of the state in which the small-diameter disc is locked to the small-diameter disc locking portion and the state in which the large-diameter disc is locked in the large-diameter disc locking portion. The insertion of the disk is detected by the operation of the switch by expanding the guide pin when the disk is inserted, and the detection of the return of the switch when each disk is in the locked state and the photoelectric A disc loading device characterized by being configured to determine the type and positioning of an inserted disc based on the detection state of a detection element. 7. In claim 1, the large-diameter disk escape means includes a guide pin that faces the front opening and is freely expandable by the inserted disk, and a guide pin that is provided at the tip and is rotatably supported. An arm and a movable guide formed on the same plane as the disk inserted into the arm, the movable guide has a guide wall surface that guides the small diameter disk to the small diameter disk locking part, and the movable guide has a large diameter 1. A disk loading device comprising: an escape guide inclined portion that causes a disk to escape from the guide wall surface when the disk comes into contact with the disk, and also guides the small-diameter disk locking portion to escape. 8. In claim 7, the escape guide slope is:
A disc loading device characterized in that it is provided at the innermost position of the guide wall when the guide pin is expanded. 9. According to claim 2 or 7, a pair of arms having the guide pin and the large-diameter disk escape means are provided,
A disc loading device characterized by being provided with an interlocking lever that connects both arms so that they can be expanded at the same time.