JPH0481824B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Industrial Application Field The present invention relates to a disc player that uses an optical pickup to reproduce signals recorded on a disc, and particularly relates to a disc player that is mounted on a disc player and drives a pickup. The present invention relates to a disc player that can perform the following operations using a single motor.

(b) Conventional technology As seen in Japanese Utility Model Application Publication No. 59-36057,
2. Description of the Related Art A disk player is known in which a disk is mounted on a slide table that slides in the horizontal direction, and a signal recorded on the disk is reproduced using an optical pickup. This disc player has a slide table sliding operation in which the slide table is slid between an open position and a playback position, and when the slide table comes to the playback position, the disc is moved vertically and the disc is placed on the turntable. It is necessary to perform a disk clamp operation to clamp the disk and a pickup drive operation to move the optical pickup in the radial direction of the disk and reproduce the signal. However, in the disk player, the above-mentioned slide table sliding operation and pick-up driving operation are performed independently using different motors, and a motor for rotating the turntable is also required, so one disk player Required at least three motors in the player.

(c) Problems to be Solved by the Invention However, using a large number of motors as a drive source is extremely disadvantageous in terms of cost. In addition, the three operations mentioned above need to be performed quickly and sequentially, but if multiple motors are used as drive sources, multiple switching regulation signals are also required, and their timing must be adjusted, so the overall The structure had to be complicated.

(d) Means for Solving the Problems The present invention has been made in view of the above-mentioned points, and includes a motor serving as a drive source, a first transmission mechanism that transmits rotation of the motor to a slide table, and a first transmission mechanism for transmitting the rotation of the motor to a slide table. a second transmission mechanism that transmits the rotation of the pickup to the drive mechanism of the pick-up; a first disc body having a groove; and a first member which is biased to be abutted and supported by the peripheral edge of the disc body and whose position is regulated by the outer peripheral surface of the peripheral edge of the disc body.
position and a rotating member rotatably supported in a second position whose position is regulated by a groove on the periphery of the disk body, and when the rotating member is displaced to the first position, the When the motor and the second transmission mechanism are disconnected and the rotating member is moved to the second position, the motor and the second transmission mechanism are connected, and while the slide table is sliding, the The rotary member is displaced to the first position, and after the slide table is displaced to the reproduction position, the rotary member is displaced to the second position.

(e) Effect The present invention displaces the rotating member to the first position while the slide table is sliding, and connects the motor and the second position.
The connection with the transmission mechanism is released so that the pickup is not driven by the motor, and after the slide table is moved to the playback position, the rotating member is moved to the second position, and the motor and the second
The motor is connected to a transmission mechanism so that the pickup can be driven by the motor. In the present invention, the rotating member is biased to be in contact with and supported by the peripheral edge of the disc body, and the position of the rotating member is regulated by the outer circumferential surface of the peripheral edge of the disc body, or The rotating member is displaced between a first position and a second position by being regulated in position by a groove on the circumferential edge of the disc body.

(f) Example FIG. 1 is a plan view showing the slide table in the open position, FIG. 2 is a plan view showing the slide table in the playback position, and FIG. 3 is a plan view showing the slide table in the open position. 1 is a plan view showing a state between a position and a playback position, 1 is a slide table, 2 is an optical pickup, 3 is a motor serving as a driving source, and 4 is a first motor fixed to a rotating shaft 3a of the motor 3. Gear 5 is a first gear that engages with the first gear 4.
A second gear having a tooth row 5a and second and third tooth rows 5b and 5c; 6 is a second tooth row 6b of the second gear 5;
A third gear 7, which is a disc body having a first tooth row 6a and a second tooth row 6b that engage with the slide table 1, is fixed to the slide table 1, and the second tooth row 6 of the third gear 6 is fixed to the slide table 1.
8 is an opening/closing lever for opening and closing the slide table 1, and 9 can take first, second, and third positions depending on the rotational position of the third gear 6. , a rotary lever that rotates around a shaft 9a; 10 is a rotary shaft 9 on the rotary lever 9;
The third tooth row 5 of the second gear 5 rotates around b.
A fourth gear 11 has a first tooth row 10a and a second tooth row 10b that engage with the fourth gear 10.
A fifth gear, 12, which engages with the tooth row 10b, is fixed to the optical pick-up 2, and a second rack, 13, which engages with the fifth gear 11, is centered about the shaft 13a depending on the position of the rotary lever 9. 14 is a first switch controlled by the operation of the opening/closing lever 8, and 15 is a second switch controlled according to the position of the rotating lever 9.

As shown in FIG. 4, the third gear 6 has a second gear on its periphery.
It has a first tooth row 6a that engages with the second tooth row 5b of the gear 5, but a part 6c of the first tooth row 6a is cut out. The first tooth row 6a is formed only in approximately half the thickness of the third gear 6, and the remaining half has no tooth row, and the end portion 9 of the rotating lever 9 has no tooth row.
The protrusion 9d of c becomes the outer peripheral surface that is abutted and supported. Further, the third gear 6 has a second tooth row 6b that engages with the first rack 7, and a portion 6d of the second tooth row 6b is also cut out. Furthermore, the third gear 6
has a pin 6e and a groove 6f recessed in the radial direction, and when the end 9c of the pivot lever 9 is engaged with the pin 6e, the pivot lever 9 is in the third position, and the pivot lever 9 is in the third position. When the protrusion 9d of the end 9c is fitted into the groove 6f, the rotary lever 9 is in the second position, and the other protrusion 9d of the end 9c is on the outer peripheral surface of the third gear 6. When abutting and supporting, the rotary lever 9 is in the first position. Furthermore, the third gear 6 has a cam portion 6g, and the disk clamp plate 16 can be lowered by the cam portion 6g.

Now, as shown in Fig. 1, the slide table 1
is in the open position, the pin 6 of the third gear 6
e engages with the end 9c of the rotary lever 9, the rotary lever 9 is in the third position, and the third tooth row 5c of the second gear 5 and the first tooth row 10a of the fourth gear 10 are connected. The engagement is released. From this state, when a disk is placed on the disk placement part (not shown) of the slide table 1 and the opening/closing lever 8 is pressed, the first switch 14 is driven and the power of the motor 3 is turned on. 3. Start rotation in the direction of arrow A. The rotation of the motor 3 in the direction of the arrow A is transmitted to the third gear 6 via the first gear 4 and the second gear 5, and the third gear 6 rotates in the direction of the arrow B. When the third gear 6 rotates in the direction of arrow B, the first rack 7 and the slide table 1 to which the first rack 7 is fixed slide in the direction of arrow C, and the slide table 1 is moved to the playback position. will be started. Third
When the gear 6 rotates in the direction of the arrow B from the state shown in FIG. The protrusion 9d of the portion 9c is supported in contact with the outer peripheral surface of the third gear 6, and the rotary lever 9 is brought to the first position in FIG. 3. The rotation lever 9 is kept at the first position until the rotation of the third gear 6 progresses and the protrusion 9d of the end 9c of the rotation lever 9 fits into the groove 6f of the third gear 6. It will be done.

When the third gear 6 rotates by a predetermined angle and the slide table 1 reaches the playback position, since the third gear 6 has a cutout part 6d, the second tooth row 6d of the third gear 6 and 1 rack 7 is released. When the third gear 6 and the first rack 7 are disengaged, the slide table 1 stops sliding, the slide table sliding operation is completed, and the next disk clamping operation starts. be done.

As shown in FIG. 5, the disk clamp plate 1
6 has a protrusion 16a, and the protrusion 16a has a third
It fits into the groove 6h of the gear 6. Said third gear 6
As shown in FIG. 4, has a cam portion 6g, so after the engagement between the third gear 6 and the first rack 7 is released, the third gear 6 is further rotated by the motor 3. When the disc clamp plate 16
The protrusion 16a is pressed in the direction of arrow D by the cam portion 6g, and the tip of the disk clamp plate 16 rotates in the direction of arrow F about the shaft 16b according to the lever principle, thereby clamping the disk.

When the third gear 6 further rotates, the protrusion 9d of the end 9c of the rotary lever 9 fits into the groove 6f of the third gear 6, and as shown in FIG. The second switch 15 is switched as shown in the figure, the control circuit (not shown) is notified of the completion of the slide table sliding operation and the disk clamping operation, and the rotation of the motor 3 is stopped. At the same time, the cutout portion 6c of the first tooth row 6a of the third gear 6 and the second tooth row 5b of the second gear 5 face each other, so that the third gear 6 stops rotating. The rotary lever 9 rotates in the direction of arrow G about the shaft 9a and is displaced to the position shown in FIG. is engaged. Therefore, when the optical pickup 2 is not at the innermost circumferential position of the disk, the motor 3 rotates by energizing the motor 3, and the rotation is caused by the first gear 4.
and is transmitted to the fourth gear 10 via the second gear 5, and as the fourth gear 10 rotates in the direction of arrow H, the fifth gear 11 engages with the second tooth row 10b of the fourth gear 10. rotates in the direction of arrow I, causing the second rack 12 and optical pickup 2 to slide in the direction of arrow J. When the pickup 2 reaches the start position at the innermost circumference of the disc, the motor 3 stops rotating and the disc player enters a standby state.

In the above-mentioned standby state, when the song number is specified and playback is started, the motor 3 is energized again, the pickup 2 is driven by the motor 3 in the opposite direction of arrow J, and the signal is played back. will be carried out.

Stop the disc player that is in playback mode,
To eject the disk, the opening/closing lever 8 may be pressed. When the opening/closing lever 8 is pressed, the tip of the opening/closing lever 8 urges the rotary lever 9 in the direction opposite to the arrow G, as shown in FIG.
The groove 6f of the gear 6 and the rotary lever 9 are disengaged from each other. At the same time, the protrusion 8a of the opening/closing lever 8 presses the protrusion 6i of the third gear 6, so the third gear 6 rotates a little, and the first tooth row 6a of the third gear 6
and the second tooth row 5b of the second gear 5 are fitted, and the rotation of the motor 3 in the direction opposite to the arrow A is caused by the rotation of the first and second gears 4.
and 5 to the third gear 6, the third gear 6 rotates in the direction opposite to the arrow B, the disk clamp plate 16 rotates in the direction opposite to the arrow F, and the first track 7 and the slide table 1 slides in the direction opposite to arrow C. In addition, the rotation lever 9 is rotated by the opening/closing lever 8.
Since the engagement between the second gear 5 and the fourth gear 10 is released when the motor 3 is energized, the optical pickup 2 does not move even if the motor 3 is rotated.

By pressing the opening/closing lever 8, the disc player returns from the playback state shown in FIG. 2 to the open state shown in FIG. 1 via the state shown in FIG. 3. Therefore, if you replace the disk and press the opening/closing lever 8 again,
Reproduction can be performed again by the operation described above, and if the disc is removed and the opening/closing lever 8 is pressed, the slide table 1 is stored in the reproduction position and the operation is stopped.

(G) Effects of the Invention As described above, according to the present invention, it is possible to provide a disk player in which the sliding operation of the slide table and the driving operation of the optical pickup can be performed by a single motor. According to this method, the rotating member is biased to be abutted and supported by the circumferential edge of the disk body, and the rotating member is moved to the first position by the circumferential edge portion of the disk body against which the rotating member is abutted and supported. Since the rotating member is moved from the first position to the second position, it is possible to simplify the configuration for switching from the sliding operation of the slide table to the driving operation of the optical pickup, and also to move the rotating member from the first position to the second position. Since the drive gear part for driving the slide table is formed on the disc body used for displacement, the timing for switching from the sliding operation of the slide table to the driving operation of the optical pickup can be easily and appropriately set. I can do it.

[Brief explanation of the drawing]

The figures show examples of the present invention.
Figure 1 is a front view showing the slide table in the open position, Figure 2 is a plan view showing the slide table in the playback position, and Figure 3 shows the slide table between the open position and the playback position. FIG. 4 is a plan view showing a certain state, FIG. 4 is a plan view showing the third gear used in FIGS. 1 to 3, and FIG. 5 is a partial sectional view of FIG. 2. Explanation of main drawing numbers 1...slide table, 2...
...Optical pickup, 3...Motor, 4...1st gear, 5...2nd gear, 6...3rd gear, 9...
...Rotating lever, 10...4th gear, 11...5th gear
gear.

Claims (1)

[Claims] 1. In a disk player in which a disk is mounted on a slide table that slides horizontally between an open position and a playback position, and a signal recorded on the disk is reproduced using an optical pickup, a motor and a drive source are used. , a first transmission mechanism that transmits the rotation of the motor to the slide table; a second transmission mechanism that transmits the rotation of the motor to the drive mechanism of the pickup; and components of the first transmission mechanism, A drive gear portion for driving the table is provided, and a disk body having a groove recessed in the radial direction on the periphery, and is biased to be abutted and supported by the periphery of the disk body. ,
a rotating member rotatably supported in a first position where the position is regulated by an outer peripheral surface of the periphery of the disc body and a second position where the position is regulated by a groove on the periphery of the disc body; When the rotating member is displaced to the first position, the motor and the second transmission mechanism are disconnected, and when the rotating member is displaced to the second position, the motor and the second transmission mechanism are disconnected. 2 transmission mechanism, and while the slide table is sliding, the rotating member is displaced to the first position, and after the slide table is displaced to the playback position, the rotating member is moved to the second position. A disc player characterized in that the disc player is configured to be displaced as follows.