JPH07114057B2 - 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 reproducing a plurality of discs successively and continuously.

2. Description of the Related Art In recent years, compact disc players have become popular,
Among them, a disc changer device has become popular as a form in which a plurality of discs can be continuously and sequentially reproduced.

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

That is, by using a dedicated disc cartridge in which a plurality of discs are stacked and stored, this disc cartridge is mounted on the player main body, and the disc is selectively taken out from the disc cartridge and played by the performance unit. A plurality of discs are arranged on the same plane and a rotatable tray is placed on a slide base that can be slid in and out with respect to the slide base. There is a type in which the disc is stored in the player main body, and the disc is selected by rotating the tray to perform in the performance section.

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

Also, the latter one is simple because you can select the disc simply by rotating the tray, but in order to move the drive source to store the tray in the main body, the drive source to rotate the tray and the playing part to the playing position. Since the drive source and the drive mechanism are independent of each other, the number of parts is large and the cost is high.

In view of the above-mentioned conventional problems, the present invention provides an inexpensive disc changer device having a simple drive mechanism that shares a drive source.

Means for Solving the Problems In order to solve the above problems, a disc changer driving device of the present invention is configured such that a plurality of discs can be arranged side by side on a horizontal plane and can be attached / detached, and a disc recording signal can be optically transmitted. In order to selectively transmit a rotational force to the reproducing unit for reproducing, the drive gear unit for rotating the tray, the elevating cam unit for elevating the reproducing unit, and the drive gear unit or the elevating cam unit, By disposing a friction gear configured to have a rotation resistance in the rotation direction on an arm that is rotatably supported coaxially with the intermediate gear part, the arm of the arm according to the rotation direction of the intermediate gear part is arranged. The friction gear is switched on the driving gear part or the elevating cam part by changing the direction, and the rotational movement of the tray or the elevating movement of the reproducing part is performed by one drive source. It is characterized by being selectively performed.

Effect The present invention, with the above-described configuration, can rotate the tray and raise / lower the reproducing unit with only a single drive source, and can share the drive source and speed reducer for the rotation and raising / lowering operations. In addition, since the driving of the tray and the raising / lowering of the reproducing portion can be switched depending on the rotation direction of the intermediate gear, the number of parts can be reduced and the configuration can be made extremely simple.

Embodiment Hereinafter, a disc changer device according to an embodiment of the present invention will be described 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, 6 is an operation button, 7 is a display section, 14 is a reproducing section cover, and 15 is a dust cover having a transparent section. Figure 2 shows
The configuration is the same as that of FIG. 1, and shows a state in which the disc 5 is detached when the dust cover 15 is open.

The internal structure of the disk changer device configured as described above will be described below mainly with reference to FIG. 3 and also with reference to FIGS. 1 and 2.

In FIG. 3, reference numeral 22 is an electronic circuit board, 24 is a drive section, 34 is a power supply section, and 6 is an operation button, which are fixed to the main body 2 with screws 20, and the lower surface is fastened to the bottom plate 23 with the screws 20. Has been done. On the upper surface of the main body 2, insert the hinge 16 into the hinge mounting portions 2b (two places) provided on the rear portion of the main body 2,
Attach the hinge tip 16a to the hinge mounting part 15a of the dust cover 15.
(2 places), so that as shown in FIG.
Opening and closing operations can be performed around 16 axes of rotation. In the case of this embodiment, the opening / closing operation of the dust cover 15 is performed manually. A roller 18 is rotatably supported by the mounting portion 2a of the main body 2 at four positions. A tray shaft 32 fixed to the drive unit 24 projects from the center hole 2b of the main body 2, and the center of the tray shaft 32 is internally threaded. The center hole 1c of the tray 1 is passed through the tray shaft 32 and rotatably mounted on the roller 18, and the clamp plate 19 is placed on the roller 18.
Is fixed to the main body 2 and the tray shaft 32 with the screw 20. The tray retainer 17 is inserted into the mounting portion 2c of the main body 2 from above and is fixed to the main body 2 with a pawl, so that the tray 1 is prevented from rising. On the clamp plate 19, the magnet clamper 12
It is supported by holding the top, bottom, left and right sides. The clamp cover 14 rides on the clamp plate 19 so as to cover the clamp plate 19, and is fixed to the main body 2 by the pawl portion 14b. The internal gear part 1b of the tray 1 and the upper gear part 25a of the drive gear 25 on the drive part 24
Engage with each other through the through hole 2d of the main body 2, and the tray 1 rotates in the direction of the arrow b according to the rotation of the drive gear 25 (arrow f). A sensor board 21 having two optical sensors 21a mounted thereon is fixed to the main body 2, and an opening portion of the main body 2 is provided.
The optical sensor 21a projects from 2f. On the back side of the tray 1, the light sensor 21a passes through the center of the light sensor 21a.
Is provided with a shutter 1d for controlling the light of the drive unit 24, and the optical sensor 21a sends a signal to the electronic circuit board 22 in accordance with the rotation of the tray 1 to drive the motor of the drive unit 24
Sends rotation and stop commands to 24a.

A set lever 35 is rotatably supported on the main body 2 about a rotation center 35b. The set lever spring 36 urges the set lever roller 35a toward the rotation center of the tray 1 to open the opening 2f of the main body 2. More set lever roller 35
a is configured to abut the tray 1, and the tray 1 after the stop command to the motor 24a of the drive unit 24 by the stop groove portion 1f provided in the tray 1 and the set lever roller 35a.
The tray 1 is configured to be stopped at a predetermined position by suppressing the inertia force of the tray 1. Next, a rotary plate 33 is supported by the drive unit 24 so as to be able to move up and down in the direction of arrow d around the rotary shaft 33a. The reproducing portion 13 is supported on the rotating plate 33, and is constantly biased in the direction of arrow h by the rotating spring 31 on the opposite side. In addition, the shaft portion 33 fixed to the rotating plate 33
b is in contact with the cam surface of the elevating cam 26, and is configured to rotate the rotating plate 33 in the direction of arrow d around the rotary shaft 33a in accordance with the rotation of the elevating cam 26 (arrow e). There is. A drive motor 24a is fixed to the drive unit 24, and the rotation is transmitted to the drive belt 27, the pulley gear 28, and the intermediate gear 30. Under the intermediate gear 30, the arm 29 is coaxially attached.
Is rotatably supported in the directions of arrows A and B, and the friction gear 29a is rotatably supported on the arm 29 by being urged by a spring in the vertical direction. Friction gear
Due to the spring force incorporated in 29a, a rotational force is generated in the arm 29 in accordance with the rotation direction of the intermediate gear 30, and the friction gear 29a can be moved to the A or B position.

With this configuration, the rotation of the drive gear 25 (arrow f) or the rotation of the elevating cam 26 (arrow e) can be obtained according to the rotation direction of the drive motor 24a (arrow g). As described above, these gears and cams can be rotated. The rotation of the tray 1 causes the tray 1 to rotate or the reproducing unit 13 to move up and down.

The reproducing movement of the disc in the disc changer device configured as described above will be specifically described below.

When the dust cover 15 is closed as shown in FIG. 1, the dust cover 15 is manually opened as shown in FIG. 2 and the disc 5 is mounted on the disc mounting portion 1 a of the tray 1. When a reproduction command is issued by pressing the operation button 6, the number 1 portion of the mounting portion 1a of the tray 1 shown in FIG. 2 rotates in the direction of arrow b and moves concentrically with the disc cover portion 14a of the clamp cover 14. At this time, the reproducing unit 13 is stopped in the downward direction as shown in FIG. As shown in FIG. 3 below, the reproducing section
13 rotates in the upward direction of arrow d and moves to the horizontal state.
In this state, the reproducing portion 13 projects from the opening 2e of the main body 2,
When the turntable 13a of the reproducing unit 13 projects from the turntable hole 1e of the tray 1, the disc 5 is reproduced by the reproducing unit 1.
It rides on the turntable 13a of No. 3 and is sandwiched by the magnet clamper 12 on the clamp plate 19 and chucked.

Next, the turntable 13a is rotated and the optical block 13b is horizontally moved in the direction of arrow i to reproduce the recording signal on the disk 5. This reproducing operation is performed regardless of the open / closed state of the dust cover 15 described above, and is not affected even when the disc is attached to or detached from the disc device portion 1a of the tray 1 other than the reproducing portion. .

The configurations and operations of the drive unit 24 and the set lever 35 will be further described below with reference to FIGS. 4 to 7.

FIG. 4 is an enlarged perspective view of the drive unit 24 and the set lever 35, and 37 is a set lever roller shaft that rotatably supports the set lever roller 35a with respect to the set lever 35.
The set lever roller 35a is configured to come into contact with the outer periphery of the tray 1 and rotate. 38 is a drive board, and axes 40, 41,
42, 43 lift cam 26 and friction gear 2 respectively
9a, the intermediate gear 30, the arm 29, and the drive gear 25 are rotatably supported with respect to the drive substrate 38. FIG. 6 shows the raising / lowering operation state of the reproducing section 13. As shown in the cross-sectional view taken in the direction of the arrow x, a friction gear 29a is rotatably inserted into a shaft fixed on the arm 29, and a friction spring 39 is sandwiched between the friction gear 29a and the arm 29. The disposition stopper 41a prevents disengagement in the upward direction. With this friction spring 39, the friction gear
29a is urged in the upward direction of the arrow to generate a certain amount of friction between the retainer 41a and the friction gear 29a, thereby generating a rotational resistance of the friction gear 29a. The arm 29 configured in this way is
It is rotatably supported by a shaft 42 fixed to 38 and a retainer 42b. The intermediate gear 30 is rotatably supported on the retainer 42b by the shaft 42 and the retainer 42a, and is configured so that the gear portion 30a of the intermediate gear and the gear portion of the friction gear 29a mesh with each other. The belt 27 is hung on the pulley portion 30b at the upper part of the above, and the driving force is transmitted from the pulley 44 of the drive motor 24a. As indicated by the arrow indicating the drive direction in the top view of FIG. 6, the drive force transmitted from the drive motor 24a causes a rotational resistance in the above-described friction gear 29a in accordance with the rotational direction of the intermediate gear 30, This rotation resistance urges the arm 29 in the direction of arrow A, the friction gear 29a contacts the gear portion 26a of the elevating cam 26, and the elevating cam 26 starts rotating in the arrow direction. The shaft portion 33b fixed to the rotating plate 33 is urged by the rotating spring 31 against the cam surface 26b of the elevating cam 26, and the rotating plate 33 rotates according to the height of the cam surface 26b. Rotate around to move up and down. FIG. 5 shows a state in which the cam surface 26b is the lowest. This state is the reproducing state of the disc 5, and the disc 5 is lifted by the turntable 13a with the disc 5 facing upward from the disc mounting portion 1a of the tray 1 stopped at the reproducing position, and the disc 5 is rotated by the turntable 13a. This becomes possible, and the recording signal of the disk 5 is reproduced by tracing by the optical block 13b.

Next, when the tray 1 is rotated and a different disc 5 is reproduced, the cam surface 26b is set to the maximum height and the rotating plate 33 is lowered to start the rotation operation of the tray 1. FIG. 7 shows the rotation operation state of the tray 1. By switching the rotation direction of the drive motor 24a according to the operation principle of the arm 29 and the friction gear 29a according to FIG. 6 described above, the arm 29 is biased in the direction of the arrow B, and the friction gear 29a contacts the drive gear 25, The drive gear 25 starts rotating in the arrow direction, and the tray 1 rotates in the arrow b direction. The tray 1 is provided with a braking groove 1h and a positioning groove 1g at five places, and a set lever roller 35 rotatably supported on a set lever 35 by a set lever roller shaft 37.
When a is abutted, the inertia force of the tray 1 after the drive motor 24a is stopped is braked by the braking groove 1h, and the positioning groove is positioned.
It is configured to position the playback position of the disc 5 at 1 g. Immediately after the drive motor 24a is stopped, the urging force of the arm 29 in the direction of arrow B disappears. Therefore, due to the inertial rotation of the tray 1 having a large inertial force as in this embodiment, the arm 29 moves in the direction opposite to the direction of arrow B. It escapes to and braking force hardly occurs. In order to improve the accuracy of the stop position of the tray after the drive motor 24a is stopped, braking and stopping means other than the drive system is necessary, which is possible with the above-described embodiment.

As described above, according to the present embodiment, as shown in the cross section in the direction of arrow x in FIG. 6, the rotation resistance of the gear is given by using friction to change the rotation direction of the drive motor 24a. It is possible to move the position of 29, and with this configuration, the raising / lowering operation of the reproducing unit 13 and the tray 1 can be performed.
It is possible to perform the rotation operation of the above with one drive motor 24a. Furthermore, an intermediate speed reduction mechanism can be shared and 1
It is possible to realize a very simple structure as a whole, such as a structure on one drive board. However, in this embodiment, as described above, when the tray 1 is braked and stopped, the drive motor is stopped.
Since the braking force of 24a cannot be used at all, as a means for overcoming this, the braking groove 1 provided on the outer periphery of the tray 1 is used.
h, a simple configuration is used in which braking and stopping are performed by the biasing force of the positioning groove 1g and the set lever 35. As described above, the present embodiment is configured by using only one drive motor 24a as an electric drive component in the raising / lowering operation of the reproducing unit 13 and the rotation / stop operation of the tray 1, and the overall configuration is simplified. The effect is large in realizing. Further, when the tray 1 is stopped, the friction gear 29a is set to the drive gear 25
When the tray 1 is further separated, the relationship between the tray 1 and the other drive units is broken except for the drive gear 25. Therefore, the tray 1 is manually rotated with a light force, and the positioning groove 1g of the tray 1 provides an appropriate click feeling. In the disc changer device of the present embodiment as shown in FIG. 2, the fact that the tray 1 can be rotated even during manual disc replacement has a great effect on the improvement of operability. Is.

EFFECTS OF THE INVENTION As described above, according to the present invention, the rotational resistance is generated between the rotational movement of the tray which performs the rotational movement in which a plurality of discs are arranged side by side on the horizontal plane and which is detachable, and the vertical movement of the reproducing unit which reproduces the disc recording signal. By providing the friction gear configured as above and the arm on which the friction gear is mounted in the middle of the reduction mechanism, not only can one drive source be used, but also the reduction mechanism and the drive board can be shared, which is an extremely simple configuration. And a disc changer drive device having the same. Further, as a means for stopping the tray, a groove shape provided on the outer circumference of the tray and a lever tip portion urged by a spring or the like are brought into contact with each other to easily brake, stop and position the inertial rotation of the tray. Is possible. In addition, by separating the above-mentioned friction gear from the tray drive gear, the tray can be manually rotated lightly, and by using the above-mentioned tray groove shape and the click force generated by the lever tip, the tray can be manually and moderately stopped. It becomes possible. As described above, according to the present invention, an extremely simple structure can be realized, and the practical effect of the disc changer driving device is great.

[Brief description of drawings]

FIG. 1 is a perspective view of a disc changer device using an embodiment of the present invention in a dust cover closed state, FIG. 2 is a perspective view of the dust cover open state of FIG. 1, FIG. 3 is FIG. FIG. 4 is an exploded perspective view showing the internal structure of the drawing, FIG. 4 is an enlarged perspective view of a driving device according to an embodiment of the present invention, FIG. 5 is a side sectional view showing a disc reproducing state by the driving device, and FIGS. FIG. 7 is a top view showing an up-and-down motion state and a cross-sectional view of the friction gear section as viewed from the arrow, and FIG. 7 is a top view showing a tray rotation motion state. 1 ... Tray, 2 ... Main body, 5 ... Disc, 6 ... Operation buttons, 7 ... Display section, 12 ... Magnet clamper, 13 ... Playback section, 14 ... Clamp cover, 15 ... Dust cover , 16 ... Hinge, 17 ... Tray holder, 18 ... Roller, 19 ... Clamp plate, 20 ... Screw, 21 ... Sensor board, 22 ... Electronic circuit board, 23 ... Bottom board, 24 ... Drive Part, 25 ... drive gear, 26 ... lift cam, 27 ... drive belt, 29 ... arm, 29a ... friction gear, 30 ...
Intermediate gear, 31 …… Rotating spring, 32 …… Tray shaft, 33 …… Rotating plate, 34 …… Power supply unit, 35 …… Set lever 35, 35a ……
Set lever roller, 36 …… Set lever spring, 37 ……
Set lever Roller shaft, 38 …… Drive board, 39 …… Friction spring, 40,41,42,43 …… Axis, 44 …… Pulley.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor ▲ Tadashi Kawa ▼ 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (56) References JP 62-192063 (JP, A) 60-194748 (JP, U)

Claims (4)

[Claims] 1. A tray in which a plurality of disks can be arranged side by side on a horizontal plane and can be attached and detached, and which makes a rotational movement, a reproducing section for optically reproducing a disk recording signal, a drive gear section for making a rotational movement of the tray, and In order to selectively transmit the rotational force to the lifting cam part that gives the playback part a lifting motion and the drive gear part or the lifting cam part, it is rotated on an arm rotatably supported coaxially with the intermediate gear part. By arranging a friction gear configured to have rotational resistance in the direction, the direction of the arm is switched according to the rotation direction of the intermediate gear, and the friction gear is brought into rolling contact with the drive gear portion or the lifting cam portion. A disc changer device characterized in that the rotational movement of the tray or the vertical movement of the reproducing portion is selectively performed by one drive source. 2. As a tray stopping means, a groove shape is provided on the outer circumference of the tray, and a lever tip portion biased by a spring or the like toward the center of rotation of the tray comes into contact with the groove shape, whereby the tray shape is improved. The disk changer device according to claim 1, wherein the rotation of the disk is reduced and stopped. 3. A tray on which a plurality of discs can be arranged side by side on a horizontal plane and which can be attached / detached and which makes a rotational movement, a reproducing section which optically reproduces a disc recording signal, a drive section which makes a rotational movement of the tray, and the reproducing section. A drive unit for raising and lowering the
And a transmission means for selectively transmitting the driving force of the drive source to the both drive portions, and by selectively bringing the transmission means into contact with or away from the drive portion of the tray, A disc changer device characterized in that the tray is selectively rotatable by both the driving force of the driving source and manual means. 4. As a tray positioning means, a groove shape is provided on the outer circumference of the tray, and a lever tip end portion biased by a means such as a spring toward the center of rotation of the tray contacts the groove shape. 4. The disc changer device according to claim 3, wherein the tray can be stopped and positioned at a predetermined reproduction position when the tray is manually rotated.