JPH09326153A - Disk changer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To attain the selective loading and unloading operations by providing slots formed on plural seat surfaces of recessed grooves in the radial direction for reading out the information recorded on a disk. SOLUTION: A 1st tray 10 is provided with plural seat surfaces 12 and 14 of the recessed grooves which are formed with same centers. The disk 'C' having the large radius and the disk 'D' having the medium radius are stably placed respectively on the seat surfaces 12 and 14 of the recessed grooves. A hole 16 is arranged on the same centers as those of the seat surfaces 12 and 14, and the 1st slot 18 in the radial direction is formed inside the seat surfaces 12 and 14 in the radial direction. The hole 16 is made smaller in size than the disk 'd' having the medium radius.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disc changer, and more particularly to a disc changer for selectively loading and unloading a plurality of discs having different radii with respect to a turntable disposed in a housing. Disc changer.

[0002]

2. Description of the Related Art A conventional disc changer is a disc changer in which a tray having a plurality of discs on the same plane rotates so as to load and unload one of a plurality of discs. In such a disc changer, the disc player must be stopped in order to replace the recorded or reproduced disc with another new disc. Therefore, it takes a considerable amount of time to exchange a new disc, and if the information recorded on various discs is continuously viewed, it is interrupted during a long disc exchange time. So it will be inconvenient. An automatic disc changer is described in US Pat. No. 5,107,475 granted to Kaoru Serita et al. Here, the center line of the tray guide in the right side area and the center line of the tray guide in the left side area are extended toward the tray transfer mechanism,
Tray guides are provided on multiple sides in the case on the left and right sides to fit each other in a "V" configuration. Since the above technique is mainly a disc changer for exchanging a large number of discs, the disc player has a high height.

[0003]

SUMMARY OF THE INVENTION It is, therefore, an object of the present invention to provide a disc changer for selectively loading and unloading a plurality of discs of different types with respect to a turntable. , At least one type of disc having a small radius is seated in a plurality on the second tray.

Another object of the present invention is to load one disk of the plurality of small radius disks seated on a second disk onto a turntable and to load the plurality of small radius disks. Another object of the present invention is to provide a disc changer for unloading another recorded or reproduced disc from the turntable.

Yet another object of the present invention is to have a first tray on which a large radius disk or a medium radius disk will be seated and at least two or more small radius disks on the top tray. To provide a disc changer having a second tray to be seated, the second tray being located on the bottom surface of the first tray so that the overall size of the disc player is reduced. ing.

[0006]

According to one aspect of the present invention, a plurality of discs having different radii are selectively loaded and unloaded from a turntable disposed within a housing. The disc changer has a plurality of recessed groove seating surfaces formed at the same center for seating a large radius disc or a medium radius disc on the upper portion of the disc changer. A hole opened in the same center as the seating surface,
And a plurality of radial grooves formed on the plurality of concave groove seating surfaces to allow a pickup moving in the radial direction below the selected disc to read the information recorded on the selected disc. A first tray having one radial slot; a transfer device for transferring the first tray forward and backward with respect to the turntable; and at least two or more small radius disks seated on top of itself. A plurality of small recessed groove seating surfaces formed along its perimeter to allow the selected small radius disc to move radially below the selected small radius disc. A second slot having a second radial slot radially formed in the plurality of small groove seating surfaces to permit reading of information recorded on the disk. A. Of the plurality of small recessed groove seating surfaces, rotate the second tray to the left and right so that one seating surface is located below the hole at the same center as the center of the hole. And a lifting device for simultaneously lifting and lowering the first tray and the second tray so as to load and unload a selected disc with respect to the turntable. , The hole is smaller than the groove seating surface for the medium size radius disc, and the second tray is located on the bottom surface of the first tray.

According to another aspect of the present invention, in a disc changer for selectively loading and unloading a plurality of discs having different radii with respect to a turntable disposed in a housing, The transfer device includes a transfer motor for driving a pinion connected to a rack formed on the bottom surface of the first tray, and the transfer motor operates to move the first tray to the turntable. And a chassis having a pair of guide rails slidably coupled to a pair of guide premises formed along both side surfaces of the first tray so as to be guided forward and backward.

According to still another aspect of the present invention, in a disc changer for selectively loading and unloading a plurality of discs having different radii with respect to a turntable disposed in a housing. The turning device includes a turning motor for driving a turning pinion coupled to a turning gear formed on the second tray, the turning motor being provided on a bottom surface of the first tray. It is mounted on a bracket that is fastened.

According to another aspect of the present invention, in a disc changer for selectively loading and unloading a plurality of discs having different radii with respect to a turntable disposed in a housing, The lifting device includes a cam gear having a cam slot formed therein, a lever guided in the cam slot so as to be pivoted forward and rearward as the cam gear rotates, and each of the chassis. A pair of sliders each having a pair of slanting guide holes slidably coupled to each pair of protrusions extending outward from a side surface, the cam gear being driven by the transfer motor, The set of inclined guide holes is inclined in the opposite direction with respect to each of the sliders.

According to still another aspect of the present invention, there is provided a disc changer for selectively loading and unloading a plurality of discs having different radii with respect to a turntable arranged in a housing. A pair of vertical guide rails, each of which is slidably guided in a vertical direction, is provided on each outer surface of the chassis. Grooves are formed in each pair of plate members fastened to both sides of the housing.

The features of the present invention can be surely understood by the preferred embodiments of the present invention which will be described in more detail with reference to the accompanying drawings.

[0012]

1 illustrates a disc changer according to a preferred embodiment of the present invention. The first tray 10 has a plurality of recessed groove seating surfaces 12 and 1 formed at the same center.
4 A large radius disk "C" and an intermediate size radius disk "D" are used to mount the recessed groove seating surfaces 12 and 14.
You can settle down on each one. A hole 16 is bored in the same center as the groove seating surfaces 12 and 14 and a first radial slot 18 is formed radially in the groove seating surfaces 12 and 14; Hall 1
6 is smaller than the disk "D" having the intermediate size radius.

The second tray 20 is located on the bottom surface of the first tray 10. The second tray 20 has a plurality of small recessed groove seating surfaces 22 formed along the peripheral portion of the second tray 20. At least two or more small radius disks may be seated on the small groove seating surface. A second radial slot 24 is formed radially in the small groove seating surface 22. The rotating gear 36 is integrally formed with the second tray 20 on one side of the second tray 20.

Referring to FIG. 2, a first tray representing a second tray 20 of a disc changer according to a preferred embodiment of the present invention.
The bottom surface of the tray 10 is shown. Second tray 20
Are pivotally coupled in a pivot 26 provided on a bracket 28. The first tray 10
A set of racks 18a and 18b is formed on the bottom surface of the rack.

A rotary motor 30 having a drive gear 32 is mounted on the bracket 28. The drive gear 32
Is connected to a rotating pinion 34 which is sequentially connected to a rotating gear 36 of the second tray 20. The bracket 28 is fastened to the bottom surface of the first tray 10. 1 and 2, a transfer device for transferring the first tray 10 to the turntable 38 in the front-rear direction is illustrated.

The belt 42 is connected between the transfer motor 40 and one of the plurality of gears 44, 46 and 48.
The plurality of gears 44, 46, 48 are sequentially coupled to each other. The gear 48 is connected to a pinion 50 which is connected to the rack 18a of the first tray 10. A chassis 52 having a pair of guide rails 52a and 52b is provided in the housing 53. Each of the guide rails 52a and 52b is a set of guide grooves 10a and 1 formed along both side surfaces of the first tray 10.
It is slidably coupled to 0b. Each of the guide rails 52a, 52b has a pinion 50a, 50b on its top.
They are separated by a connecting member 54 in which b is located.

The selected disk is turned on the turntable 38.
An elevating device for simultaneously elevating and lowering the first tray 10 and the second tray 20 for loading and unloading is provided in the housing 53. The lifting device includes a cam gear 56 having a cam slot 56a formed therein, a lever 58 guided in the cam slot 56a, and a pair of sliders each having a pair of inclined guide holes 61a and 61b. 60a and 60b are included. The cam gear 56 is connected to a gear 46 driven by the transfer motor 40. The pair of protrusions 62a and 62b extending outward from the side surfaces of the chassis 52 are slidably coupled to the inclined guide holes 61a and 61b. Each of the inclined guide holes 61a, 61
b is inclined in the opposite direction with respect to the sliders 60a and 60b. Each end 58a, 5 of the lever 58
8b is connected to joints 64a and 64b formed below the sliders 60a and 60b.

Outside each side of the chassis 52, a pair of plate members 68 fastened on both sides of the housing 53.
a and 68b, each corresponding pair of concave groove portions 6
Guided slidably up and down in 9a and 69b 1
A pair of vertical guide rails 66a and 66b are provided. Hereinafter, the operation of the disc changer according to the preferred embodiment of the present invention will be described with reference to FIGS.

FIG. 3 illustrates a disc changer according to a preferred embodiment of the present invention, in which the first tray 10 is transported rearward from the turntable 38. Transfer motor 4
If 0 is driven in one direction, a large number of gears 44,
46, 48 and the pinion 50a are driven, and the first tray 10 is transferred rearward from the turntable 38 by the rack 18a connected to the pinion 50a. The pinion 50b connected to the rack 18b is
The transfer of the first tray 10 is guided. At said position, a large radius disk "C" or an intermediate size radius disk "D" rests on the groove seating surfaces 12 and 14, respectively. Further, after the second tray 20 is rotated rightward and leftward, the small-diameter disks "A" and "B" are also seated on the small recessed groove seating surface 22 through the holes 16.

In FIG. 4, the first tray 10 is driven by the transfer motor 40 in the reverse direction to cause the turntable 3 to move.
8 is transferred. Since the lever 58 is not pivoted in the front-rear direction while the first tray 10 is being transferred in the front-rear direction with respect to the turntable 38, the first tray 10 is held in the raised position.

FIG. 5 illustrates a disc changer according to a preferred embodiment of the present invention, in which the second tray 20 is pivoted to the right for loading the selected disc "A" onto the turntable 38. Has been done. The second
The tray 20 is rotated rightward by a rotation motor 30. In this state, each pair of protrusions 62
a and 62b are pairs of inclined guide holes 61a and 61a
The first tray 10 is in the raised position because it is in the raised position of b.

Referring to FIG. 6, after the selected disk "A" is loaded on the turntable 38, the first tray 10 is lowered. In order to load the selected disk "A" onto the turntable 38, the transfer motor 40 is further driven to pivot the guided lever 58 of the cam slot 56a of the cam gear 56. . Therefore, the lever 58 is pivoted about the pivot pin 58c, so that each slider 60 is pivoted.
a and 60b are end portions 58a and 5 of the lever 58, respectively.
8b slides backward and forward respectively. by this,
Each of the sliders 60a, 60b has a protrusion 62a, 6b.
2b lowers the chassis 52 which is slidably coupled in each of the inclined guide holes 61a and 61b.
At this time, the pair of vertical guide rails 66a and 66b of the chassis 52 are slidably guided in the corresponding pair of concave groove portions 69a and 69b of the plate members 68a and 68b. As described above, after loading the selected disk "A" onto the turntable 38, the first tray 10 is further lowered, and then the transfer motor 40 is stopped. Then, the pickup motor 70 is driven to record or reproduce any one of the selected discs, whereby the pickup 72 moves to the lower side of the disc. When the pickup 72 moves, a turntable motor (not shown) rotates the turntable 38. Therefore, the objective lens 76 is
Radial slot 18 or second radial slot 24
The information of the selected disc is read via.

In FIG. 7, the recorded or reproduced disc "A" is unloaded from the turntable 38, and yet another disc "B" is loaded onto the turntable 38. After the first tray 10 is lifted, the second tray 20 is rotated leftward. In order to load the further selected disc "B" onto the turntable 38, the first tray 10 is lowered in the same manner as described above with reference to FIG. 6 (see FIG. 8). ).

When the disc player is to be deactivated, the first tray 10 is raised after the turntable motor is stopped and then the second tray 20 is shown in FIG. The recorded or reproduced disc "B" is rotated to the neutral position while unloading from the turntable 38. The above description is only for explaining the present invention, and various modifications and changes can be made by those skilled in the art without departing from the present invention, and thus all such modifications and changes are possible. Are within the scope of the claims.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a disc changer according to a preferred embodiment of the present invention.

FIG. 2 is an exploded perspective view of the bottom surface of the first tray showing the second tray of the disc changer according to the preferred embodiment of the present invention.

FIG. 3 is a plan view of a disc changer according to a preferred embodiment of the present invention, showing a state in which a first tray is being transferred rearward from a turntable.

FIG. 4 is a plan view of a disc changer according to a preferred embodiment of the present invention showing a state in which a first tray is being moved forward with respect to a turntable.

FIG. 5 is a plan view of a disc changer according to a preferred embodiment of the present invention showing a state in which a second tray is rotated to the right for loading a selected disc onto a turntable.

FIG. 6 is a plan view of a disc changer according to a preferred embodiment of the present invention showing a state in which a first tray is lowered after loading a selected disc onto a turntable.

FIG. 7 is a diagram showing an example in which the recorded or reproduced disc is unloaded from the turntable, and the second tray is moved to the left side after the first tray is lifted to load another selected disc onto the turntable. FIG. 3 is a plan view of the disc changer according to the preferred embodiment of the present invention, showing a rotated state.

FIG. 8 is a plan view of FIG. 7 showing a state where the first tray is lowered after loading another selected disc onto the turntable.

9 is a plan view of FIG. 8 showing a state in which the second tray is positioned at the neutral position after unloading yet another recorded or reproduced disc from the turntable.

[Explanation of symbols]

 10 first tray 10a guide groove 10b guide groove 12 concave groove seating surface 14 concave groove seating surface 16 hole 18 first radial slot 20 second tray 22 concave groove seating surface 24 second radial slot 36 rotary gear 38 turntable 40 Transfer motor 42 Belt 44 Gear 46 Gear 48 Gear 50a Pinion 50b Pinion 52 Chassis 52a Guide rail 52b Guide rail 53 Housing 54 Connecting member 56 Cam gear 56a Cam slot 58 Lever 58a End 58b End 58c Pivot pin 60a Slider 60a Slider 60b Hole 61b Inclined guide hole 62a Projection part 62b Projection part 64a Joint 64b Joint 66a Vertical guide rail 66b Vertical guide rail 68a Plate material 68b Plate 69a recessed groove 69b recessed groove portion 70 pickup motor 72 pickup 76 objective lens

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Jae Hyun, Yun South Korea Seoul Dobong-Guchang-Don 347 Jukon Apartment 311-1102 (72) Inventor Ho Khan, Ryu Republic of Korea Kyungyed Yongin-Gun Suji-Myun Pung Dukcheon-ri 663 No. 1 Samsung 4 Suspension 106-1503

Claims (5)

[Claims] 1. A disc changer for selectively loading and unloading a plurality of discs having different radii with respect to a turntable disposed in a housing, the disc having a large radius or an intermediate size. A plurality of recessed groove seating surfaces formed in the same center for seating a disk having a radius of up to the top, holes formed in the same center as the plurality of recessed groove seating surfaces, and a selected disk First radial slots are formed in the plurality of recessed groove seating surfaces in a radial direction to allow a pickup moving in a radial direction below to read information recorded on the selected disk. A first tray having, and a transfer device for transferring the first tray to the front and rear of the turntable, at least two A plurality of small recessed groove seating surfaces formed along the peripheral portion for seating the above small radius disk on the upper part of itself, and moving radially under the selected small radius disk. A second radial slot radially formed in the plurality of small recessed seating surfaces to allow a pickup to read information recorded on the selected small radius disc. Rotate the second tray to the left and right so that one of the two trays and the seating surfaces of the plurality of small grooved recesses is located below the hole at the same center as the center of the hole. A rotation device for moving the first tray and a second tray for moving the first and second trays simultaneously so as to load and unload the selected disc on the turntable. A disc changer, wherein the hole is smaller than a recessed groove seating surface for the medium size radius disc and the second tray is located on the bottom surface of the first tray. . 2. A transfer motor for driving a pinion connected to a rack formed on the bottom surface of the first tray by the transfer device, and the transfer tray driving the transfer motor to operate the first tray. A chassis having a pair of guide rails slidably coupled in a pair of guide grooves formed along both side surfaces of the first tray so as to be guided forward and backward with respect to a turntable. The disc changer according to claim 1, further comprising: 3. The rotating device includes a rotating motor for driving a rotating pinion connected to a rotating gear formed on the second tray, and the rotating motor includes the first rotating motor. The disc changer according to claim 1, wherein the disc changer is mounted on a bracket fastened to the bottom surface of the tray. 4. A cam gear having a cam slot in which the lifting device is formed, a lever guided in the cam slot so as to be pivoted forward and backward by the rotation of the cam gear, and Each pair of protrusions extending outwardly from each side of the chassis and a pair of sliders each having a pair of inclined guide holes adapted to be slidably coupled, the cam gear comprising: The disc changer according to claim 1, wherein the pair of inclined guide holes are driven by the transfer motor and are inclined in a reverse direction with respect to the sliders. 5. A set of vertical guide rails slidably guided up and down in respective corresponding pairs of recessed grooves on the outer surface of each of the chassis, each of the corresponding pair of vertical guide rails being provided. The disc changer according to claim 1, wherein the recessed groove portion is formed in each pair of plate members fastened to both sides of the housing.