JP3092754B2 - Disc changer - Google Patents

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 for storing a plurality of discs such as compact discs and video discs in a storage section and selecting one of the discs to reproduce the disc. And a disc changer that can change and play a disc.

[0002]

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

[0003] In order to raise and lower the elevator without tilting, the four gears transmit power so that they rotate in different directions and at the same speed depending on the direction of engagement with the rack such as front and rear or left and right. Need to be done. For this reason, many gear trains have been used.

[0004]

However, in such a conventional technique, many gear trains are used to drive four gears, and the driving mechanism becomes complicated. However, there is a problem that the occurrence of a failure increases due to the complexity.

The present invention has been made in view of such problems of the prior art, and has a worm gear mechanism which is driven by a single driving source on a mounting member on which a tray is mounted to move the mounting member in a vertical direction. It is an object of the present invention to provide a disk changer that raises and lowers a mounting body with a simple mechanism and with a small number of components.

[0006]

SUMMARY OF THE INVENTION Accordingly, the present invention provides a plurality of trays on which disks are placed and arranged in parallel, and a plurality of trays which stand on one side in the horizontal direction of the trays and on which the trays are placed. A disc changer comprising: four guide rails provided to guide the mounting body, and elevating means that engages with the guide rails to raise and lower the mounting body,
The elevating means is provided on the mounting body, and the gear 8 meshes with the rack 6 a on the side surface of the guide rail 6 and is provided at each end of two shafts 9, and the worm gear 10 provided in the middle of the shaft 9.
A shaft 11 provided at both ends with worms 12 meshing with the worm gear 10 from above and below, respectively;
A worm gear 13 provided in the middle of the worm gear 13 and the worm gear 13
And a single motor 14 to which a worm 15 meshing with the motor is fixed.

[0007]

In the disc changer of the present invention, a 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 opposite 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. FIGS. 1 to 6 show 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, the disc changer accommodates a compact disc player 2 at the top of the cabinet 1 and a video disc player 3 at the bottom of the cabinet 1. The compact disc player 2 and the video disc player 3 A tray 4 on which either a compact disk or a video disk is placed is placed slidably in the front-rear direction.

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. When the door 5 is opened, the tray 4 is pulled out to the front side and mounted thereon. Video disc,
Alternatively, a compact disk can be replaced.

On the rear side of the tray 4, four guide rails 6 serving as guide means are provided upright at four positions in front, rear, left and right directions. However, it is mounted so as to be able to move up and down while maintaining the level.

Hereinafter, the main part of the disc changer of the present invention will be described. As shown in FIG.
As shown in FIG. 2, two gears 8 each meshing with a rack 6a provided on each of the guide rails 6 are provided.
It is provided in. At the center of each of these shafts 9,
A worm gear 10 is provided. Worm gear 10
Are engaged with two worms 12 fixed to one shaft 11 above and below the shaft 11, respectively. Therefore, the shaft 11
As shown in FIG. 3, the shaft 9 rotates in directions A and B opposite to each other to move the elevator 7 up and down in the same direction. The worm gear 10 and the worm 12 constitute a worm gear mechanism.

A worm gear 1 is provided at the center of the shaft 11.
3 is fixed, and the worm gear 13 meshes with a worm 15 fixed to a motor 14 as a driving source. The worm 15 and the worm gear 13 constitute 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 elevating means. When the motor 14 rotates, the gears 8 rotate in opposite directions on the front side and the rear side at the same speed, and this rotation causes the elevator 7 to rotate.
Moves up and down while maintaining the horizontal position.

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

The draw lever 2 is provided on the tray 4.
0 is formed with an engaging groove 4a which engages with the hooking portion 20a.
Comes into engagement with the engagement groove 4a, and when reaching the position where the hooking portion 20a is engaged with the engagement groove 4a of the selected tray 4, the elevator 7 is stopped by the stop of the motor 14. , Stop at that position.

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

When the accommodation is completed, the rotation of the motor 16 is stopped, and then the motor 14 starts rotating again, and the elevator 7 is moved upward when the disk placed on the tray 4 is a compact disk. In the case of a video disc, it is rotated to move it downward, and when the movement is completed to that position, the motor 14 is also stopped, and the disc on the tray 4 is moved by a conventionally known means to the compact disc player 2, Alternatively, it is transferred to the video disc player 3.

Thus, the required disc is selected and 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. Then, the disc is returned to the tray 4 from the player by the operation opposite to the transfer.

Then, when the motor 14 rotates in the opposite direction to the above and reaches 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, the motor 16 rotates in the opposite direction to the above, the pull-in lever 20 is pushed to push the tray 4, and the tray 4 is returned to the original position.

After the return operation is completed, selection of the next disk to be reproduced and reproduction by transfer to the compact disk player 2 and video disk player 3 are performed according to the same operation as the selection. Can be used to select a required disc and reproduce it.

[0021]

As described above, according to the present invention,
Four gears driven by one motor mounted on the elevator mesh with each rack provided on four guide rails erected on one side of the tray.
The rotation of the four motors drives the four gears in mutually opposite directions to raise and lower the elevator vertically.

Therefore, the rotation direction of each gear can be made opposite to each other and the number of rotations can be made the same only by the transmission mechanism such as the gear from the motor to the gear, so that the rotation timing and the rotation speed of each gear are not deviated. Therefore, the elevator moves up and down without tilting, and the tray is placed and the loaded tray is transported to the player smoothly, so that the disc changer can be performed without any trouble. The mechanism is simple, can be produced at low cost, and has high reliability without fear of failure.

[Brief description of the drawings]

FIG. 1 is an overall perspective view of a 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.

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 into an elevator.

FIG. 6 is a plan view of the retracted state shown in FIG. 5;

[Explanation of symbols]

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

Claims (1)

(57) [Claims] 1. A plurality of trays on which disks are mounted and arranged in parallel, and a plurality of trays provided to stand on one side in the horizontal direction of the trays for guiding a mounting body on which the trays are mounted. 4 and guide rails, a disk changer that includes a lifting means for raising and lowering the engaged before described mounting body in the guide rails, the elevating means is provided in the front, wherein mounting body, said guide rail
Mesh with the rack 6a on the side of the
The gear 8 provided and the worm gear 10 provided between the shaft 9
From above and below from the worm gear 10, respectively.
One shaft 11 provided with meshing worms 12 at both ends;
A worm gear 13 provided in the middle of the worm gear 13 and the worm gear 13
One motor 14 with a fixed worm 15
Disc changer, characterized in that that.