JPH0612768A - Disk changer - Google Patents

Abstract

PURPOSE:To elevate and lower an elevator on which a disk is mounted while it is horizontally held with a simple mechanism by providing a transmission mechanism such as gears moving the elevator in the vertical direction by a single driving source. CONSTITUTION:A rack 6a is provided on plural guiding rail 6 erected at one side in the horizontal direction of a tray 4 which is horizontally arranged in parallel and a disk is mounted on. Transmission mechanisms 15, 13, 12 and 10 such as gears are driven by a single motor 14 mounted on the elevator 7 mounting the tray 4 and the plural gears 8 engaging with the rack 6a are driven, then the elevator is vertically moved in the same direction.

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 player in which a plurality of discs such as compact discs and video discs are accommodated in a storage unit, and any one of them is selected and reproduced. The present invention relates to a disc changer that can be transferred to, change the disc, and play the disc.

[0002]

2. Description of the Related Art In a conventional disc changer of this type, a tray on which a disc is placed is pulled out from a storage portion of the tray and is placed on the elevator, and a vertical movement for selecting the tray, or Four columns provided to move the elevator to the upper and lower player positions and four gears that mesh with a rack provided on the columns are used.

In order to move the elevator up and down without tilting, the four gears transmit power so that they rotate in different directions depending on the direction in which they engage with the rack such as front and rear or left and right, and at the same speed. Need to let. For this reason, many gear trains were used.

[0004]

However, in such a prior art, many gear trains are used to drive four gears, and the drive mechanism becomes complicated. However, due to its complexity, there is a problem in that the occurrence of failures also increases.

The present invention has been made in view of the above problems of the prior art, and is a worm gear mechanism that is driven by a single drive source for a mounting body on which a tray is mounted to move the mounting body in the vertical direction. It is an object of the present invention to provide a disc changer that raises and lowers a mounting body with a simple mechanism by using a simple mechanism.

[0006]

SUMMARY OF THE INVENTION Therefore, according to the present invention, a plurality of trays on which disks are placed and arranged in parallel, and a tray on which the trays are placed are erected on one side in the horizontal direction of the trays. A disc changer comprising: a plurality of guide means provided for guiding a mounting body; and an elevating means that engages with the guiding means to move the mounting body up and down. It is characterized in that it is provided with a transmission mechanism such as a gear which is provided on the mounting body and is engaged with each of the guide means and driven by one driving source to move the mounting body up and down.

[0007]

In the disk changer of the present invention, since the transmission mechanism such as a gear mounted on the mounting body and driven by a single drive source is provided, for example, the worm gear mechanism is driven by the drive of the drive source. With respect to the rotation of the worm, the worm wheel rotates in the left and right directions, and the mounting body moves in the same vertical direction.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 6 are views showing an embodiment of a disc changer according to the present invention, for example, a so-called karaoke disc changer using a disc such as a video disc or a compact disc.

As shown in FIG. 1, this disc changer contains a compact disc player 2 in the uppermost stage and a video disc player 3 in the lowermost stage in a cabinet 1, and the compact disc player 2 and the video disc player 3 are accommodated. The tray 4 on which either the compact disc or the video disc is placed is placed slidably in the front-rear direction between and.

A door 5 shown in FIG. 2 is attached to the cabinet 1 on the front side of the tray 4 so as to be openable and closable, and by opening the door 5, the tray 4 is pulled out to the front side and mounted thereon. A video disc,
Alternatively, the compact disc can be replaced.

On the rear surface side of the tray 4, four guide rails 6 serving as guide means in the up-down direction are erected at four positions in the front, rear, left and right, and the guide rails 6 serve as an elevator 7 as a mounting body. However, it is mounted so that it can move up and down while maintaining its level.

The essential parts of the disc changer of the present invention will be described below. As shown in FIG.
As shown in FIG. 2, there are two shafts 9 each of which has two gears 8 meshing with the racks 6 a provided on each of the guide rails 6.
It is provided in. In each central part of this shaft 9,
A worm gear 10 is provided. Worm gear 10
Engages with two worms 12 fixed to one shaft 11 above and below the shaft 11, respectively. Therefore, the axis 11
As shown in FIG. 3, the shaft 9 rotates in directions A and B, which are opposite to each other in the direction of arrow C, and moves the elevator 7 in the same vertical direction. The worm gear 10 and the worm 12 form a worm gear mechanism.

The worm gear 1 is provided at the center of the shaft 11.
3 is fixed, and this worm gear 13 meshes with a worm 15 fixed to a motor 14 which is a drive source. The worm 15 and the worm gear 13 form a worm gear mechanism. Motor 14, worm 15, worm gear 13, shaft 11, worm gear 10, worm 1
2, the shaft 9 and the gear 8 constitute an elevating means. When the motor 14 rotates, the gears 8 all rotate at the same speed in opposite directions on the front side and the rear side, and this rotation causes the elevator 7 to rotate.
Moves vertically while keeping horizontal.

As shown in FIG. 4, a screw shaft 19 rotated by a worm gear 18 meshing with the worm 17 of the motor 16 is rotatably supported on the upper surface of the elevator 7. The split nut 20b of the pull-in lever 20 shown in FIGS. 5 and 6 having the hook portion 20a at the tip is screwed.

The tray 4 is provided with the pull-in lever 2
An engaging groove 4a that engages with the hooking portion 20a of 0 is formed, and when the elevator 7 is moved up and down, the hooking portion 20a is inserted from above and below.
Becomes engaged with the engaging groove 4a, and when the position where the hooking portion 20a is engaged with the engaging groove 4a of the selected tray 4 is reached, the elevator 7 stops by the motor 14 thereof. , Stop at that position.

When this stop is performed, the motor 16 starts to rotate, the screw shaft 19 is rotated, and the pull-in lever 20 is rotated.
4 is moved to the lower right side in FIG. 4, and the tray of the engaging groove 4a engaged with the hook portion 20a is moved accordingly, and the rail grooves 21 provided on both the left and right sides of the elevator 7 are moved.
Housed inside.

When this storage is completed, the rotation of the motor 16 is stopped, and then the motor 14 starts to rotate again, and the elevator 7 is moved upward when the disc mounted on the tray 4 is a compact disc. In the case of a video disc, the disc 14 is rotated so as to be moved downward, and when the movement to that position is completed, the motor 14 is also stopped, and the disc on the tray 4 is stored in the compact disc player 2 by the conventionally known means. Alternatively, it is transferred to the video disc player 3.

Thus, the required disc is selected, the selected disc is reproduced by the compact disc player 2 or the video disc player 3, and when the reproduction is completed, the next disc is selected. When done, the disc is returned from the player to the tray 4 by the operation opposite to the transfer.

Then, when the motor 14 rotates in the opposite direction to the original position where the tray 4 placed on the elevator 7 is pulled out, the rotation of the motor 14 is stopped and the elevator 7 is stopped. Is stopped, and the motor 16 rotates in the opposite direction to the above, the pull-in lever 20 is operated to push the tray 4, and the tray 4 is returned to the original position.

After the completion of the returning operation, the disk to be reproduced next is selected and the reproduction is performed by transferring the disk to the compact disk player 2 and the video disk player 3 according to the same operation as the selection. Can select the required disc and play it as described above.

[0021]

As described above, according to the present invention,
Four gears driven by one motor installed in the elevator are meshed with the respective racks provided on the four guide rails that are erected on one side of the tray.
The rotation of one motor drives the four gears in opposite directions to move the elevator up and down.

Therefore, the rotational directions of the gears can be made opposite to each other and the rotational speeds can be made the same by only the transmission mechanism such as the gear from the motor to the gears, so that the rotational timing and rotational speed of each gear are not changed. Therefore, the elevator moves up and down without tilting, the trays are placed and the placed trays are smoothly conveyed to the player, and the disc changer can be operated without any trouble. The mechanism is simple and can be produced at low cost, and there is no fear of failure, and high reliability can be obtained.

[Brief description of drawings]

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

FIG. 2 is a perspective view showing a replacement state of the tray shown in FIG.

FIG. 3 is a perspective view of a main part of the elevator shown in FIG.

4 is a perspective view showing a tray selection state by the elevator shown in FIG. 1. FIG.

5 is a cross-sectional view showing a state where the tray shown in FIG. 1 is pulled onto an elevator.

FIG. 6 is a plan view of the retracted state shown in FIG.

[Explanation of symbols]

 2 compact disc player 3 video disc player 4 tray 6 guide rail (guide means) 6a rack 7 elevator (placement body) 8 gear 9, 11 shaft 10, 13 worm gear (transmission mechanism such as gear) 12, 15 worm (gear etc.) Transmission mechanism) 14 motor (driving source) 9 to 15 (elevating means)

Claims (1)

[Claims] 1. A plurality of trays on which discs are placed and arranged in parallel, and a tray provided vertically on one side of the trays for guiding the tray on which the trays are placed. A disc changer comprising a plurality of guide means and an elevating means for engaging with the guide means and elevating and lowering the placing body, wherein the elevating means is provided on the placing body, and each of the guiding means is provided. A disc changer provided with a transmission mechanism such as a gear which is engaged and driven by one drive source to move the mounting body up and down.