JPH08212655A - Disk loading device - Google Patents

Abstract

PURPOSE: To exactly load a disk different in size and diameter without using any adaptor. CONSTITUTION: The disk loading device 1 is equipped with a disk loading roller 17 arranged to traverse a disk inserting passage 16, a turntable 24 capable of supporting large and small disks 12 and 13 in different diameter and one pair of small diameter disk guides 18 and 19 set in positions to be capable of positioning the small diameter disk inserted into the disk inserting passage 16 onto the turntable 24. The small diameter disk guides 18 and 19 are provided on a guide operating means for moving the small diameter disk guides 18 and 19 to be withdrawn from their set positions by being pressed by the large diameter disk when the large diameter disk is inserted into the disk inserting passage 16.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk loading apparatus for a disk player, which is capable of accurately loading disks of different sizes and diameters.

[0002]

2. Description of the Related Art A so-called slot-in-loading type disc loading device is widely used as a vehicle-mounted CD player or the like.

In this slot-in-loading type disk loading apparatus, as shown in FIGS. 13 and 14, a disk loading roller 2 is disposed so as to cross a disk insertion path 1, and a disk insertion device is provided. When the disc 3 is inserted into the passage 1, the disc loading roller 2 comes into contact with the surface of the disc 3, and the disc 2 is loaded by rotating the roller 2 in one direction and rotated in the other direction. 3 is to be unloaded.

Reference numeral 4 denotes a disc upper surface guide plate which is arranged above the disc loading roller 2 so as to face the disc loading roller 2. The disc 3 is sandwiched between the disc upper surface guide plate 4 and the disc loading roller 2. It is like this. And the disk loading roller 2
Is formed in a tapered shape in which the diameter gradually decreases from both sides in the length direction toward the center, and the disc upper surface guide plate 4 also corresponds to the disc loading roller 2 so as to correspond to the disc loading roller 2. When the disc 3 is sandwiched between the disc loading roller 2 and the disc upper surface guide plate 4, the upper and lower peripheral edges of the disc 3 are formed. Only the non-signal recording surface of the portion contacts the disk loading roller 2 and the disk upper surface guide plate 4, and the signal recording surface inside the non-signal recording surface does not contact the disk loading roller 2 and the disk upper surface guide plate 4. Thus, the signal recording surface of the disk 3 is protected.

[0005]

However, in the above-mentioned conventional disk loading apparatus, there is a problem that it is difficult to share disks having different sizes and diameters, for example, disks having a diameter of 12 cm and disks having a diameter of 8 cm.

[0006] For example, a disc loading device made for the purpose of using for example a 12 cm disc is naturally adapted to a 12 cm disc.
Since the width of the disc insertion path is set, if an 8 cm CD is to be used for this, the center cl ₁ of the 8 cm CD 5 is moved to the center line cl _{2 of the} disc insertion path 1 as shown by the solid line in FIG. Unless the 8 cm CD5 is inserted into the disc insertion path 1, the 8 cm CD5 cannot be centered without fail, and the 8 cm CD5
When the insertion position shifts, as shown by the imaginary line in FIG.
This is because m CD5 is not centered. 6 is a turntable. In order to solve the above problem, a pair of small-diameter disc guides may be provided in front of the disc loading roller 2 so that the small-diameter disc can be inserted into the center of the disc insertion passage with these guides. However, if small-diameter disk guides are fixedly provided in front of the disk loading roller 2, the small-diameter disk guides narrow the disk insertion path, and cannot insert a large-diameter disk.

According to the present invention, when a small-diameter disc is inserted, a pair of small-diameter disc guides are locked at a predetermined position so as to guide the loading of the small-diameter disc. When inserting the large-diameter disk, the pair of small-diameter disk guides are unlocked and displaced away from each other so as not to hinder the insertion of the large-diameter disk. It is an object of the present invention to provide a disk loading device capable of reliably centering even a small-diameter disk.

[0008]

DISCLOSURE OF THE INVENTION Disc loading rollers are arranged so as to cross the disc insertion passage, and when discs of different sizes are inserted into the disc insertion passage, the disc loading is performed on the peripheral portion of the disc. In the disk loading device designed to load the disk by pressing the roller for rotation and rotating the roller in one direction, the small-diameter disk inserted from the disk insertion passage can be positioned on the turntable. A pair of small-diameter disc guides that have been set are provided, and the pair of small-diameter disc guides are retracted by a guide operating means so as not to obstruct the insertion of the large-diameter disc.

Therefore, when the small-diameter disc is inserted, the small-diameter disc is positioned on the turntable by the small-diameter disc guide and then supported by the turntable. When the large-diameter disk is inserted, the guide operation means is operated by the large-diameter disk, and the pair of small-diameter disk guides is retracted to a position where the large-diameter disk does not hinder movement on the turntable. .

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the drawings.

A. Schematic Configuration of Disc Loading Device of the Present Invention (See FIG. 1) In FIG. 1, reference numeral 11 denotes a 12 cm CD (hereinafter, referred to as a large-diameter disc) 12 and an 8 cm CD as a disc loading device for a car-mounted CD player. (Hereinafter, referred to as a small-diameter disc) 13 is a disc loading apparatus of the present invention configured to be able to load both of them.
1 is formed in a size corresponding to the size of the large-diameter disk 12. When the large-diameter disk 12 or the small-diameter disk 13 is inserted into the disk insertion passage 16 from the disk insertion opening 15 provided on one side of the frame (chassis) 14,
The disks 12 and 13 are loaded into the chassis 14 by a disk loading roller 17 arranged so as to cross the disk insertion passage 16. A pair of left and right small-diameter disk guides 18 and 19 for guiding the small-diameter disk onto the turntable 24 are arranged in the disk insertion passage 16. At the time of insertion, it is retracted and moved by the guide operating means so as not to hinder the insertion. The guide operating means includes a guide displacement mechanism 20 that slides the pair of left and right small-diameter disk guides 18 and 19 in a direction in which they are separated from each other, and the guide displacement mechanism 2 described above.
A lock mechanism 21 for fixing the 0 to small-diameter disk guides 18 and 19 at the small-diameter disk guide position, and a lock mechanism 21 disposed in front of the small-diameter disk guides 18 and 19 when the large-diameter disk 12 is inserted. A guide displacement mechanism 20 to a small-diameter disc guide 18 by a lock mechanism 21;
A pair of left and right disc diameter detectors 2 for unlocking 19
2,23. Reference numerals 25 and 26 denote a pair of left and right clamp releasing arms.

B. Schematic Configuration of Frame (See FIGS. 2 to 5) The frame 14 includes the pair of small-diameter disc guides 18,
19, the guide displacement mechanism 20, the lock mechanism 21, etc., and the upper frame 27,
And a lower frame 28 to which an optical system pickup (not shown) is attached, and the disc loading roller 1
7 and a rotating frame 29 for lowering the large and small disks 12, 13 loaded by the rollers 17 onto the turntable 24.

The upper frame 27 has left and right side plates 32, 33 on both sides of an upper plate 31 provided with a clamper insertion hole 30.
The guide displacement mechanism 20 is formed on the upper surface of the upper plate 31 by connecting the
And a lock mechanism 21 and the like. Above upper plate 31
A disk upper surface guide plate 35 provided with a tapered surface 34 that is gradually inclined from both left and right sides toward the center on the lower surface of the disk.
Are mounted so that a disc insertion opening 15 and a disc insertion passage 16 are formed below the guide plate 35.

As shown in FIG. 3, the lower frame 28 is attached to bush receiving pieces 32a, 32a, 33a, 33a at the lower ends of left and right side plates 32, 33 of the upper frame 27 via vibration absorbing bushes 36, 36. The vibrations from the vehicle body (the vehicle body to which the disk loading device of the present invention is mounted) are absorbed by the vibration-absorbing bushes 36 and 36 so that the disk and the pickup on the turntable 24 are prevented from swinging. ing.

The rotating frame 29 is provided with a disk end support plate 37 located below the disk insertion slot 15.
And a pair of left and right arms 38 and 39 connected to both sides of the support plate 37.
Are pivotally supported by left and right side plates 32, 33 of the upper frame 27 by pivots 40, respectively.

A spring locking pin 41 is provided at the other end of each of the arms 38 and 39. One end of a torsion coil spring 42 is rotatably locked to the pin 41, and the torsion coil The other end of the spring 42
The spring locking pin 43 provided on the side plates 32 and 33 of the upper frame 27 is rotatably locked. And
When the rotating frame 29 is rotated counterclockwise (arrow head a direction) about the pivots 40, 40, the rotating frame 29 is rotated clockwise by the click action of the spring force of the torsion coil spring 42. When the rotating frame 29 is maintained in the maximum rotated state (see FIG. 4) and is rotated in the clockwise direction (direction of arrow head b), the rotating frame 29 receives the spring force of the torsion coil spring 42. Click action,
It is maintained in the state of being rotated to the maximum in the clockwise direction (Fig. 5).
reference).

When the rotating frame 29 is rotated to the maximum in the counterclockwise direction, the rear end side of the disc end supporting plate 37 is inclined upward as shown in FIG. In this state, the upper surface of the disc inserted from the disc insertion opening 15 is pressed against the disc upper surface guide plate 35 side by the disc loading roller 17 described below, and the disc is placed above the turntable 24 by the disc loading roller 17. When the rotary frame 29 is rotated in the counterclockwise direction as much as possible after being fed,
As shown in FIG. 5, the disc end portion support plate 37 is in a horizontal state in which the back end side is lowered and the disc having one end side placed on the upper surface thereof is lowered to place the disc on the turntable 24. It is designed to be placed on.

C. Structure of Disc Loading Roller (See FIGS. 6 to 8) The outer peripheral surface of the disc loading roller 17 is gradually contracted from both sides in the longitudinal direction toward the central portion as shown in FIG. The tapered surface is formed so as to have a diameter. Then, the disc loading roller 17 is arranged on the rear end side of the disc end portion support plate 37 of the rotating frame 29 in a state where the height is aligned with this (see FIGS. 4 to 5), and the roller shaft 44.
The left and right arms 38, 39 of the rotating frame 29
When the rotating frame 29 is fully rotated in the counterclockwise direction, the both sides of the disc loading roller 17 come into contact with the disc upper surface guide plate 35. 7 to 8
As shown in (1), the roller is driven by a roller drive motor 45 provided on the lower surface of the rotating frame 29 via a reduction gear group 46 attached to the arm 39 and a pinion gear 47 fixed to one end of the roller shaft 44. ing.

Reference numeral 48 denotes a rotating frame drive mechanism for rotating the rotating frame 29 in the clockwise and counterclockwise directions. The rotating frame drive mechanism 48 is used for the rotating frame 2
A rotating arm 49, one end of which is pivotally supported by the arm 39 of FIG.
An idle gear 50 rotatably attached to the other end of the rotating arm 49, in which the pinion gear 47 and the large-diameter gear portion 50a are constantly meshed, and the idle gear 50.
The rack 51 has one end pivotally attached to the side plate 33 of the upper frame 27 so as to be able to come into contact with and separate from the small-diameter gear portion 50b, and an electromagnetic actuator 52 that brings the rack 51 into contact with and separate from the idle gear 50.

When the roller driving motor 45 is driven to rotate the disk loading roller 17 to feed the large and small diameter disks 12 and 13 to a position directly above the turntable 24, a loading end detecting mechanism 53 described later.
Then, the loading end is detected and the electromagnetic actuator 52 is operated to engage the rack 51 with the idle gear 50 as shown in FIG. Then, as shown in FIG. 8, the idle gear 50 descends along the rack 51, and the rotating frame 29 to which the idle gear 50 is attached rotates downward, so that the large and small discs 12,
13 is placed on the turntable 24.

D. Configuration of Small Diameter Disk Guide (See FIGS. 1 and 9) A pair of left and right small diameter disk guides 18 and 19 are arranged around the loading center RC and have a diameter d of the small diameter disk 13.
₁ substantially are arranged at the same distance d ₂ and, inserting a small disc 13 between these small-diameter disk guides 18 and 19, the center of the small-diameter disk 13 is adapted to conform to the self Dzuto the loading center RC . When the large-diameter disk 12 is inserted, the small-diameter disk guides 18 and 19 are displaced (slipped) so as to be separated from each other to the left and right by the guide operating means described below, so that the large-diameter disk 12 is inserted. It does not become a hindrance.

E. Configuration of Guide Operating Means E _-1 . Configuration of Guide Displacement Mechanism (See FIGS. 1 and 9 to 12) The guide displacement mechanism 20 is a pair of left and right elongated slides formed substantially symmetrically as shown in FIG. Plate 5
4, 55, a pair of rotating plates 56, 57 supporting one end of the sliding plates 54, 55, and a sliding force is applied to the sliding plates 54, 55 via the rotating plates 56, 57. It consists of a pair of coil springs 58,59.

One of the pair of slide plates 54, 55 (an upper slide plate in FIG. 9, hereinafter referred to as a left slide plate) is provided with first and second slide guides in the longitudinal direction. Holes 60, 61
Are formed, and a small-diameter disc guide mounting slot 62 is formed on the left end side in the length direction.
One (left) small-diameter disk guide 18 is attached to the elongated hole 62 downward, and a lock pin 63 constituting the lock mechanism 21 described below is attached to the right end side downward. The other slide plate 55 (the lower slide plate in FIG. 9, hereinafter referred to as a right slide plate).
Similarly, two third and fourth slide guide holes 64 and 65 are formed in the length direction of the left slide plate 54, and a small-diameter disk mounting slot 6 is formed on the right end side in the length direction.
The other (right) small-diameter disc guide 19 is attached to the elongated hole 66 downward, and a lock pin 67 is attached to the left end side downward.

Then, with the lock pin 63 of the left slide plate 54 inserted into the fourth slide guide hole 65 of the right slide plate 55, the pair of left and right slide plates 54, 55 are overlapped with each other to form an upper. On the upper plate 31 of the frame 27, the first slide guide pins 68 projecting from the upper plate 31 are fitted into the first slide guide holes 60 of the left slide plate 54, The third slide guide pin 69 is fitted into the third slide guide hole 64 of the right slide plate 55, and the third slide guide pin 70 is connected to the second and fourth slide guides of both the left and right slide plates 54, 55. Hole 61,
65, these slide plates 5
4 and 55 are first to third slide guide pins 68 to 7
It slides along zero.

The pair of left and right rotating plates 56, 57
By utilizing the bearing holes 56a, 57a provided at one end side, the shafts 18a, 1 of the small-diameter disk guides 18, 19 are
On the other hand, the other end is pivotally supported on the upper plate 31 of the upper frame 27 by shafts 71 and 72.

The pair of left and right coil springs 58, 5
Reference numeral 9 has one end locked to the rotating plates 56 and 57 and the other end locked to the upper plate 31 of the upper frame 27, and applies a sliding force to the slide plates 54 and 55 so as to overlap each other. In a state where the slide plates 54 and 55 are most overlapped, FIG.
The first slide guide pin 68 erected on the upper plate 31 of the upper frame 27 is located at the left end of the first slide guide hole 60 of the left slide plate 54 as shown in FIG. 69 is located at the right end of the third slide guide hole 64 of the right slide plate 55, and the third slide guide pin 70 is located at the left end of the second slide guide hole 61 of the left slide plate 54, and The slide plate 55 is located at the center of the fourth slide guide hole 65. Under this condition, the pair of small-diameter disc guides 1
Reference numerals 8 and 19 are located at the small-diameter disk guide position.

Since the guide displacement mechanism 20 of the embodiment has the above-described configuration, when the large-diameter disk 12 is inserted from the disk insertion slot 15 as shown in FIGS. The pair of left and right slide plates 54, 55, whose surfaces contact the pair of left and right small-diameter disk guides 18, 19, are mounted on the small-diameter disk guides 18, 19 and slide left and right to reduce the distance between the small-diameter disk guides 18, 19. It is spread and passed through the large-diameter disk 12.

Further, as shown in FIG. 12, when the pair of small-diameter disk guides 18 and 19 are at the small-diameter disk guide position, the guide displacement mechanism 20 is locked by a lock mechanism 21 described below, and the small-diameter disk guide is locked. 18, 19
When the small-diameter disk 13 is inserted between the small-diameter disks 1
3 is loaded while being centered by these small diameter disc guides 18, 19.
Then, as described above, the upper plate 31 of the upper frame 27
The first slide guide pin 68 erected on the left slide plate 54 is located at the left end of the first slide guide hole 60 of the left slide plate 54, and the second slide guide pin 69 is located on the third slide plate 55 of the right slide plate 55. The third slide guide pin 70 is located at the right end of the slide guide hole 64 and the third slide guide pin 70 is in the second slide guide hole 61 of the left slide plate 54.
Is located at the center of the fourth slide guide hole 65 of the slide plate 55 on the right side, so that when the pair of left and right small-diameter disc guides 18 and 19 are at the small-diameter disc guide position. When one of the slide plates 54, 55 is locked by the lock mechanism 21, the other slide plate is also locked by itself, and the small-diameter disc 13 is moved to the small-diameter disc guides 18, 19. Even if the slide plate 5 is inserted with a so-called eccentric state
Nos. 4 and 55 do not slide.

E- ₂ . Configuration of Lock Mechanism (See FIGS. 1, 9 to 12) The lock mechanism 21
A pair of left and right lock pins 63, 67 attached to one end of each of the lock pins 63, 67, and pin receiving grooves 71, 72 are fitted around the lock pins 63, 67 to fix the lock pins 63, 67. A pair of lock plates 73, 74 and these lock plates 73, 74 are provided with pin receiving grooves 71, 72.
Is composed of a pair of left and right coil springs 75 and 76 which apply a turning force in a direction of fitting to the lock pins 63 and 67.

The lock plates 73 and 74 are formed in a substantially right-angled triangular shape, and have a bearing hole 7 provided in a right-angle corner.
The shafts 18 of the small-diameter disk guides 18 and 19 are attached to 3a and 74a.
The pin receiving recesses 71 and 72 are pivotally supported by inserting a and 19a, and the pin receiving grooves 71 and 72 are formed on one side sandwiching the right angle corner. The pin receiving groove 71,
Reference numeral 72 is such that when the pair of left and right small-diameter disc guides 18 and 19 are at the small-diameter disc guide position, they are fitted around the outer periphery of the small-diameter disc guides 18 and 19 to fix the small-diameter disc guides 18 and 19 at that position.

Slide plate end engaging portions 77 and 78 are provided at the corners on the front end side of the sides of the lock plates 73 and 74 where the pin receiving recesses 71 and 72 are formed, and the large diameter disc 12 While loading, as shown in FIGS. 10 to 11, these slide plate end engaging portions 7 are
7, 78 are the first and second slide guide pins 68,
The slide plate 54, 55 to the small-diameter disk guides 18, 19 are prevented from returning to the small-diameter disk guide position when they come into contact with the small-diameter disk 69. When the small-diameter disk guides 18 and 19 return to the small-diameter disk guide position, there is a risk that the guide displacement mechanism 20 is locked by the lock plates 73 and 74, and this is to prevent this.

E- ₃ . Configuration of Disk Diameter Detector (See FIGS. 1 and 9) The pair of left and right disk diameter detectors 22 and 23 literally include a large-diameter disk 1 inserted into the disk insertion slot 15.
This is for determining whether or not the disk 13 is a 2 or small diameter disk 13 and unlocking the guide displacement mechanism 20 by the lock mechanism 21 when inserting the large diameter disk 12.

A pair of left and right disk diameter detectors 22,
Reference numeral 23 denotes a pair of left and right lock plates 7 located closer to the disk insertion opening 15 than the small-diameter disk guides 18 and 19.
The small-diameter disk 13 is attached to one corner of the lower surface of the small-diameter disk 34 at substantially the same interval as the diameter of the small-diameter disk 13 so that the small-diameter disk 13 can pass through the corner as it is.

Therefore, when the large-diameter disk 12 is inserted between them, the outer peripheral surfaces thereof come into contact with the pair of left and right disk diameter detectors 22, 23.
3, a pair of left and right lock plates 73 and 74 act as coil springs 75,
Rotating against the spring force of 76, the pin receiving grooves 71, 72 come out of the outer periphery of the lock pins 63, 67, and the lock of the guide displacement mechanism 20 is automatically released.

F. Loading end detection mechanism (FIG. 1,
(See FIGS. 10 to 12) The loading end detection mechanism 53 is adapted to match the diameters of the large and small discs 12 and 13 to each other.
Actuates the electromagnetic actuator 52 when is sent above the turntable 24.

The loading end detection mechanism 53 is
A first rotating rod 81, which is attached to the upper plate 31 of the upper frame 27 by a shaft 80 so as to attach a switch 79 of the electromagnetic actuator 52, and one end of the first rotating rod 81. The second rotating rod 85 rotatably mounted on the upper plate 31 of the upper frame 27 by the shaft 84 with the pin 82 provided on the side fitted in the pin receiving groove 83.
A pin-shaped first rear disc guide 86 attached below the other end of the second pivoting rod 85; and a pin-like rear disc guide 86 attached below the other end of the first pivoting rod 81. A second rear disc guide 87 having an arcuate wall shape, a switch operation rod 89 rotatably mounted on the first rotation rod 81 about a shaft 88, and a switch operation rod 89. The large and small-diameter disks 12 and 13 come in contact with each other, and a disk contact pin 90 for rotating the switch operating rod 89 in the switch pressing direction, and the first and second rotating rods 81 and 85. To the rotating rods 81, 8
5, the first and second coil springs 91 and 92 for setting the first and second rear disk guides 86 and 87 at the small-diameter disk guide position, and the rotating plate of the guide displacement mechanism 20. When the slide plate 55 is locked by being attached to the shaft 72 of the first rotating rod 57, the rising piece 9 provided at one end of the first rotating rod 81 is provided.
3 and a stopper 94 which locks the first and second rotating rods 81 and 85.

When the small-diameter disk 13 is loaded, the first and second rear disk guides 86 and 87 are locked at the small-diameter disk guide position by the stopper 94 as shown in FIG. When the small-diameter disc 13 is sent onto the turntable 24, the disc 13 hits the disc contact pin 90,
By turning the switch operating rod 89, the switch 79 of the electromagnetic actuator 52 is turned on.

When the large-diameter disk 12 is loaded, the slide plate 55 slides, the rotation plate 57 to the stopper 94 rotate, and the first and second rear disk guides 86 and 87 lock. When the rear disk guides 86 and 87 are released, the rear disk guides 86 and 87 are expanded and pushed down by the large-diameter disk 12 and set at the large-diameter disk guide position. Then, when the large-diameter disk 12 is sent onto the turntable 24, the disk 12 hits the disk abutment pin 90 and the switch operating rod 89 is rotated in the same manner as in the case of the small-diameter disk 13 to rotate the electromagnetic actuator 52. The switch 79 is turned on.

The pair of left and right clamp release arms 2
Until loading is completed, the sliders 5 and 26 are in contact with the inclined surface 96 on the lower surface side of the magnet clamp 95 to support the magnet clamp 95 while floating on the turntable 24, and the loading is completed. Is placed on the turntable 24, and at the same time, the release arms 25 and 26 rotate in the direction away from each other to release the support of the magnet clamp 95, so that the clamp 95 is attracted to the turntable 24 side. , The turntable 2
4 to clamp the disk.

G. Operation of the Embodiment Since the disk loading device of the embodiment has the above-described configuration, when the large-diameter disk 12 is inserted into the disk insertion slot 15, the disk diameter detectors 22 and 23 form a pair of left and right disk diameter detectors. The pair of left and right lock plates 73 and 74 rotate,
The lock of the guide displacement mechanism 20 by the lock plates 73 and 74 is released, and the large-diameter disk 12 is fed toward the turntable 24 by the rotation of the disk loading roller 17. When the large-diameter disk 12 is fed toward the turntable 24, a pair of left and right small-diameter disk guides 18, 19 contacting the peripheral surface thereof, or a pair of left and right slide plates 54, 55 moves in the direction away from each other and the pair of left and right rotating plates 56 and 57 rotate, and the rising pieces 93 are restrained by stoppers 94 provided on one end sides of these rotating plates 56 and 57. While the peripheral surface of the large-diameter disk 12 is
6, 87, these rear disc guides 86, 8
While pushing 7 to the left and right, push it down and set it to the large-diameter disc guide position. And large diameter disk 1
2 is pressed against the rear disk guides 86 and 87 set at the large-diameter disk guide position, and the feeding by the disk loading roller 17 ends.
At this time, the large-diameter disk 12 hits the disk contact pin 90, the switch operating rod 89 is rotated, and the switch 79 of the electromagnetic actuator 52 is turned on. Therefore, the rack 51 of the rotating frame driving mechanism 48 is meshed with the idle gear 50 by the electromagnetic actuator 52, and the idle gear 50 descends along the rack 51, and rotates the rotating frame 29 downward. Then, the large-diameter disk 12 is placed on the turntable 24. At the same time that the large-diameter disk 12 is placed on the turntable 24, the clamp release arms 25 and 26 rotate in a direction away from each other to release the support of the magnet clamp 95. And chucks the large-diameter disk 12 with the turntable 24.

When the large-diameter disc 12 is loaded, the width of the large-diameter disc 12 passing between the pair of left and right small-diameter disc guides 18 and 19 increases, and the guides 18 and 19 and the slide plates 54 and 55 The pair of small-diameter disk guides 18 and 19 move in the direction away from each other, and when the diameter portion that is the maximum width of the large-diameter disk 12 passes, the pair of small-diameter disk guides 18 and 19 gradually move in the direction of approaching each other. Lock plate 73,
The slide plate end engaging portions 77 and 78 of 74 abut against the first and second slide guide pins 68 and 69 to prevent the slide plates 54 and 55 from returning and the lock plate 7
3, 74 is prevented from locking the guide displacement mechanism 20. Therefore, when the large-diameter disc 12 is pushed out during unloading, the small-diameter disc guides 18 and 19 are separated from each other and pass through the large-diameter disc 12.

When the small-diameter disk 13 is loaded, the small-diameter disk 13 passes between the pair of left and right disk diameter detectors 22 and 23 without rotating the pair of right and left lock plates 73 and 74. . Therefore, since the pair of small-diameter disk guides 18 and 19 are locked at the small-diameter disk guide position, the small-diameter disk 13 passing between the pair of small-diameter disk guides 18 and 19 is centered by itself. It will be loaded in the state. When the disk is unloaded after the reproduction of the disk or the like is completed, if the roller drive motor 45 is reversed, the idle gear 50 moves up along the rack 51, and the rotating frame 29 is moved upward. At the same time, the clamp release levers 25 and 26 rotate in a direction approaching each other, abut against the inclined surface 96 of the magnet clamp 95, and support it while being lifted from the disk surface. The disc is pushed out of the disc insertion slot 15 by the rotation of the disc loading roller 17.

In this embodiment, the guide operating means is constituted by the guide displacement mechanism 20, the lock mechanism 21, and the pair of disk diameter detectors 22 and 23. An arm is used, small-diameter disc guides 18 and 19 are provided at one end thereof, and when the large-diameter disc 12 is inserted, the small-diameter disc guides 18 and 19 are pressed by the peripheral surface of the large-diameter disc 12, The small diameter disc guides 18 and 19 may be retracted by rotating the rotating arm.

[0044]

As described above, the disk loading device of the present invention comprises a disk loading roller disposed so as to cross a disk insertion path and a turntable capable of supporting disks of different sizes and diameters. And a pair of small-diameter disc guides set at positions where the small-diameter disc inserted from the disc insertion passage can be mounted on the turntable, and when a large-diameter disc is inserted from the disc insertion passage. Since the guide operation means for pressing the large-diameter disk to retreat the small-diameter disk guide from the small-diameter disk setting position is provided, when the small-diameter disk is inserted, the small-diameter disk is guided by the pair of small-diameter disk guides. While loading guides, when a large disc is inserted The guide operation means is pressed and operated by the large-diameter disc, and the pair of small-diameter disc guides is retracted to a position where the insertion of the large-diameter disc is not hindered. There is an effect that centering can be performed reliably.

[Brief description of drawings]

FIG. 1 is a perspective view showing the appearance of a disc loading device.

FIG. 2 is a perspective view of a frame.

FIG. 3 is a bottom view of the frame.

FIG. 4 is a side view of a state in which a rotating frame is raised.

FIG. 5 is a side view of a state where the rotating frame is lowered.

FIG. 6 is a sectional view of a disk loading roller portion.

FIG. 7 is a side view showing a relationship between an idle gear and a rack in a rotating frame up state.

FIG. 8 is a side view showing a relationship between an idle gear and a rack in a rotating frame down state.

FIG. 9 is an exploded plan view of a guide displacement mechanism and a lock mechanism.

FIG. 10 is a plan view showing a state where a large-diameter disc is being loaded toward a turntable.

FIG. 11 is a plan view showing a state where a large-diameter disk is loaded just above a turntable.

FIG. 12 is a plan view showing a loading state of a small-diameter disk.

FIG. 13 is a plan sectional view of a conventional example.

FIG. 14 is a sectional view taken along line AA of FIG. 13;

FIG. 15 is an explanatory diagram showing a problem of the conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 ... Disk loading apparatus 12 ... Large diameter disk 13 ... Small diameter disk 14 ... Frame 15 ... Disk insertion opening 16 ... Disk insertion path 17 ... Disk loading roller 18, 19 ... A pair of small diameter disk guide 20 ... Guide displacement mechanism 21 ... Lock mechanism 22, 23: Disk diameter detector

Claims (1)

[Claims] 1. A disc loading roller disposed so as to cross the disc insertion passage, a turntable capable of supporting discs of different sizes and diameters, and a small diameter disc inserted from the disc insertion passage. When a large-diameter disc is inserted from the pair of small-diameter disc guides arranged at a position where it can be mounted on the turntable, the large-diameter disc pushes the small-diameter disc guide to turn the small-diameter disc guide. A disk loading device comprising: a guide operating means for retracting and moving from a position where it can be mounted on a table.