JP2734612B2 - Disc changer device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disc changer device capable of sequentially and sequentially reproducing a plurality of discs.

Conventional technology In recent years, compact disc players have become widespread,
Among them, a disc changer device has become widespread as a form in which a plurality of discs can be successively and sequentially reproduced.

Conventionally, there have been the following two types of disc changers of this type.

That is, using a dedicated disk cartridge in which a plurality of disks are stacked and stored, the disk cartridge is mounted on the player main body, a disk is selectively taken out from the disk cartridge, and the disk is played in the playing section. A plurality of discs are arranged on the same plane and a rotatable tray is placed on a slide base which can slide in and out of the tray, and a plurality of discs are placed on this tray, and the tray is put together with the slide base. By storing it in the player body and rotating the tray,
There is a type in which a disc is selected and played in a performance section.

Problems to be Solved by the Invention However, the former type requires a dedicated cartridge, and the mechanism for selectively supplying a disc to the playing section from the cartridge is very complicated, and the number of parts is large,
The cost was high.

In the latter case, the disc can be selected simply by rotating the tray, which is simple.However, a drive source that stores the tray in the main body, a drive source that rotates the tray, and a drive that moves the playing section to the playing position Since the source and the respective drive mechanisms are independent of each other, the number of parts is large and the cost is high. In addition, there is a problem such as generation of mechanical noises at the time of ascending and descending.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described conventional problems, and provides an inexpensive disk changer device with a small mechanical sound by using a drive mechanism having a simple configuration sharing a drive source.

Means for Solving the Problems In order to solve the above problems, a disc changer device of the present invention has a plurality of discs which can be detachably arranged side by side on a horizontal plane, and a tray which rotates and optically reproduces disc recording signals. A reproducing section, a driving gear section for rotating the tray, an elevating cam section for performing an elevating movement on the reproducing section, and an intermediate gear section for selectively transmitting a rotational force to the driving gear section or the elevating cam section. By arranging a friction gear configured to have rotational resistance in the rotational direction on an arm rotatably supported on the same axis, the direction of the arm is switched according to the rotational direction of the intermediate gear, and the friction gear Is rotated to the drive gear portion or the lift cam portion, and the rotation of the tray or the lift of the reproducing unit is selectively performed by one drive source. In the disc changer device, the rotating force of the elevating cam generated when the shaft of the rotating plate is pressed down by the force of the rotating spring and pressed against the cam surface of the elevating cam is applied to the self-propelling prevention cam provided on the elevating cam by the spring force. To reduce self-propelled noise and impact noise caused by the rotating spring force of the lifting cam.

According to the present invention, the rotation of the tray and the elevation of the reproducing unit can be performed only by a single drive source by the above-described configuration, and the drive source and the speed reduction device up to the rotation and elevation operation can be shared, and The drive of the tray and the lifting and lowering of the playback unit are switched according to the direction of rotation of the intermediate gear. Can be configured.

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows a disc changer device according to an embodiment of the present invention.

In FIG. 1, 1 is a tray, 2 is a main body, 3 is an operation button, 4 is a display unit, 5 is a playback unit cover, 6 is a dust cover, 7 is a disk, 1a is a disk storage unit of the tray 1, 8
Denotes a clamp cover, and 8a denotes a disk cover.

In FIG. 2, reference numeral 9 denotes a drive board provided at a lower portion of the main body 2. Reference numeral 10 denotes a motor, 12 denotes a belt, and an intermediate gear provided to rotate about a pulley 11 and a shaft 13.
Has been biased between 14.

Reference numeral 15 denotes an arm provided so as to rotate about a shaft 13.A friction gear 17 provided so as to rotate about a shaft 16 provided at one end meshes with the intermediate gear 14, and is fixed by a friction spring 18 provided at a lower portion. The rotation resistance is given.

Reference numeral 19 denotes a drive gear provided so as to rotate about the shaft 20, and is configured to engage with a gear portion 1a provided on the outer periphery of the tray 1 to rotate the tray 1.

Reference numeral 21 denotes an elevating cam, which is provided so as to rotate about a shaft 22, and the friction gear 17 moves in a direction in which the motor 10 rotates in the direction of arrow A and engages with the arm 15 together with the arm 15 by the resistance of the friction spring 18. When the motor 10 rotates in the direction indicated by the arrow B, the motor 10 moves in a direction that meshes with the drive gear 19.

Reference numeral 21a denotes a cam portion of the elevating cam 21. A shaft portion 23a provided on a rotating plate 23 provided so as to rotate in the direction indicated by an arrow around a horizontal shaft portion 9a of the driving substrate 9 rotates with the driving substrate 9. It is configured to be pressed against the plate 23 by the force of the tension spring 24 urged.

 Reference numeral 25 denotes a reproducing unit provided on the rotating plate 23.

21b is a self-propelled prevention cam provided on the lifting cam 21,
When the concave portion 21a 'of the elevating cam 21 corresponds to the horizontal shaft portion 23a, the protruding portion 21b' of the self-propelling prevention cam 21b corresponds to the leaf spring 26 provided on the drive board 9, and the elevating cam 21 When the convex portion 21a "of 21 corresponds to the horizontal shaft portion 23a, the concave portion 21b" of the self-running prevention cam 21b corresponds to the leaf spring 26, and the shaft portion 23a moves up and down by the force of the extension spring 24. The force that pushes the slope of the cam portion 21a of the cam 21 to rotate the elevating cam 21 is negated. That is, the leaf spring 26 is configured to go down the slope of the self-propelled prevention cam 21b when the shaft 23a goes up the slope of the lift cam 21.

Reference numeral 27 denotes a tray shaft provided on the drive board 9 and tray 1
Are configured to rotate about this.

The operation of the disk changer configured as described above will be described below with reference to FIGS.

First, the disc 7 is stored in the storage section 1a of the tray 1, and when the operation button 3 is operated, the motor 10 rotates in the direction B and the friction gear 17 meshes with the drive gear 19,
When the tray 1 is rotated in the direction of arrow E, and the disk 7 reaches the lower part of the clamp cover 8, the motor 10 rotates in direction a and the friction gear 17 engages with the lifting cam 21.゜ By rotating, the concave portion 21a 'of the elevating cam 21 corresponds to the shaft portion 23a, and the convex portion 21
When b 'and the leaf spring 26 correspond to each other, the rotating plate 23 is rotated in the direction of arrow D by the force of the tension spring 24, and the reproducing unit 25 comes into contact with the disk 7 and starts playing in a known manner.

When the shaft portion 23a goes down the slope of the cam portion 21a by the force of the pull spring 24, the lifting cam 21 tries to run in the direction of arrow G by itself, but by the force of the leaf spring 26 trying to rise on the slope of the self-running prevention cam 21b. Self-propelled is prevented. The motor 10 rotates in the direction of the arrow A, and the elevating cam 21 further rotates 180 ° in the direction of the arrow G, so that the recess 21a ″ of the elevating cam 21 and the shaft 23a correspond to the self-propelling prevention cam.
When the recess 21b ″ of the recess 21b corresponds to the leaf spring 26, the rotating plate 23 rotates in the direction of arrow C by the force of the tension spring 24, and
Is detached from the disk 7, and the tray 1 becomes rotatable.

Further, when the motor 10 rotates in the direction of arrow B by operating the operation button 3, the tray 1 rotates in the direction of arrow E,
The disk 7 escapes from the lower part of the clamp cover 8 and the disk 7 can be taken out by hand.

As described above, according to the present invention, a plurality of discs can be arranged in a horizontal plane and can be attached and detached, and a tray that performs a rotating motion, a reproducing unit that optically reproduces a disc recording signal, and a rotating motion of the tray. An ascending and descending cam portion for giving a lifting motion to the driving gear portion and the reproducing portion, and an arm rotatably supported coaxially with the intermediate gear portion to selectively transmit a rotational force to the driving gear portion or the ascending and descending cam portion. By arranging a friction gear configured to have a rotational resistance in the rotational direction on the upper side, the direction of the arm is switched according to the rotational direction of the intermediate gear, and the friction gear is transferred to the drive gear portion or the elevating cam portion. In a disc changer device that selectively rotates the tray or moves the reproducing unit up and down by one driving source in contact with the driving unit, the reproducing unit applies a vertical movement to the reproducing unit. The rotating force of the elevating cam generated when the shaft of the rotating plate is pressed down by the force of the rotating spring and pressed against the cam surface of the elevating cam is provided on the elevating cam. By doing so.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a multi-disc player according to an embodiment of the present invention, and FIG. 2 is a perspective view showing a mechanism thereof. 1 ... tray, 2 ... body, 3 ... operation buttons, 4 ...
Display part, 5: Reproduction cover, 6: Dust cover, 7:
... Disc, 8 ... Clamp cover, 9 ... Drive board,
10… motor, 12… belt, 13… shaft, 14 …… intermediate gear, 15 …… arm, 16 …… shaft, 17 …… friction gear, 18 …… friction spring, 19 …… drive gear, 20 ......
Shaft, 21 ... Lifting cam, 22 ... Shaft, 23 ... Rotating plate, 24 ...
Extension spring, 25 Reproduction unit, 26 Plate spring, 27 Tray shaft.

Continuing on the front page (72) Inventor Yasumasa Iyama 1006 Kazuma Kadoma, Osaka Prefecture Inside Matsushita Electric Industrial Co., Ltd.

Claims (1)

(57) [Claims] 1. A tray which allows a plurality of disks to be arranged and detached side by side on a horizontal plane and performs a rotational movement, a reproducing unit for optically reproducing a disk recording signal, a drive gear unit for rotating the tray, and the reproducing unit A lifting cam portion for giving a lifting motion to the portion, and an arm rotatably supported coaxially with the intermediate gear portion to selectively transmit a rotating force to the driving gear portion or the lifting cam portion, in a rotational direction. By disposing a friction gear configured to have rotational resistance, the direction of the arm is switched in accordance with the rotation direction of the intermediate gear, and the friction gear is brought into rolling contact with a drive gear portion or a lifting cam portion to form one arm. What is claimed is: 1. A disc changer device for selectively performing a rotary motion of said tray or a vertical movement of said reproducing unit by a driving source, wherein a shaft portion of a rotary plate for giving a vertical movement to said reproducing unit. The rotating force of the elevating cam generated when the rotating cam is pressed down by the force of the rotating spring and pressed against the cam surface of the elevating cam is canceled by applying a spring force to the self-propelling prevention cam provided on the elevating cam. A disc changer device characterized by the above-mentioned.