JPH0719418B2 - Disk mounting device - Google Patents

Description

The present invention relates to a digital audio disc so-called DAD disc mounting device, and more particularly to a disc mounting device configured to be automatically sucked and mounted at a playing position when the disc is horizontally inserted.

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

Reference numeral (1) is a casing of a disk playing device, an insertion port (3) into which a disk (2) is inserted is formed on a front surface, and a disk playing mechanism and a mounting mechanism are provided on a chassis (4). (5) is a movable body which is supported by guide shafts (6) and (6) planted in the chassis (4) and is vertically movable. The movable body is constructed as a box with an open upper surface as shown in FIG. The coil springs (7) and (7) mounted on the guide shafts (6) and (6) are urged upward to prevent rattling. (8) is a disk holding member slidably mounted in the moving body (5), and triangular guide grooves (9) (9) into which the disk (2) is inserted and held are formed on the left and right. . The moving body (5) is configured so as to correspond to the insertion opening (3) of the disk (2) at the upper position, and the disk (2) is moved from the insertion opening (3) to the disk holding member (8). When inserted, the moving body (5) is moved to the lower playing position by the mechanism described later. Reference numeral (10) is a lid for closing the insertion opening (3) projecting upward from the moving body (5), and closing the insertion opening (3) by moving the moving body (5) downward.

Reference numeral (11) is a driving member for driving the moving body (5) and the disk holding member (8). The chassis shafts (12) and (12) are housed in the long holes (13) and (13) and are slidably mounted. The rack gear (14) formed on one side is configured to slide by being driven by the pinion gear (15) to which the driving force of the motor is transmitted via a reduction mechanism (not shown). The cam plates (17) (1) (1) having different shapes are formed on the upper surface of the drive member (11) and the bent plate (16) bent laterally downward.
8) is formed, and a protruding shaft (19) protruding from the side surface of the moving body (5) is fitted in the cam groove (18). Also folding plate (1
A roller member (20) that comes into contact with the lower surface of the chassis (14) is provided at the lower end of 6) to smooth the sliding motion of the drive member (11) and to move the drive member (11) upward. Are regulated.

Reference numeral (21) is an L-shaped rotation lever rotatably attached to the chassis shaft (22), and a projection (23) provided at one end is engaged with a cam groove (17) of the drive member (11), A starting lever (25) is rotatably mounted on a pivot shaft (24) planted at the other end, and a starting switch (26) for driving a motor (not shown) which is closed by the turning of the starting lever (25). Is placed. A long hole (27) is formed at one end of the starting lever (25), and the starting lever (25) is engaged with a drive shaft (28) planted in the disk holding member (8), and a pivot shaft (2
Although it is biased in the counterclockwise direction by the spring (29) wound around 4) and fixed to the turning lever (21) and the starting lever (25), the upward bending piece of the turning lever (21). Rotation is restricted by (30). The length of the drive shaft (28) is formed so as to maintain the engaged state with the elongated hole (27) of the starting lever (25) when the moving body (5) is moved to the lower playing position. There is.

FIG. 4 is an electric circuit diagram for controlling the drive of the motor (31) that drives the mounting mechanism. (32) is a DC voltage that drives the motor (31) from the rectifier circuit (33) when closed by the power switch. (+ B) is output. (34) is a flip-flop that is set and reset by closing the first and second limit switches (35) (36) provided at the sliding end of the drive member (11), and rotates the motor (31). Output (Q) () is AND gate (37) (3) to select the direction.
It is supplied to the motor control circuit (39) via 8).
In this motor control circuit (39), AND gates (37) (38)
To change the rotation direction of the motor (31) by the output of
The transistors are in a bridge configuration, and the motor (3
By switching the drive current direction of 1), the motor (3
The rotation direction of 1) is controlled. (40) is the starting lever (2
When the start switch (26) is closed by 5), the moving body (5)
The switch (4) communicating with the power switch (32) when the moving body control switch (41) for arbitrarily moving up and down is closed.
The flip-flop is configured to be set when the power switch (32) is turned off when the power switch (32) is turned off, and reset when the first and second limit switches (35) (36) are closed. ) Is connected to a three-input OR gate (43), the first input of the OR gate (43) has a start switch (26), and the second input has a moving body control switch (41).
The switch (42) is connected to the third input by the inverter (44).
And AND gate (45), and AND gate (45)
The output of the first limit switch (35) is supplied to the other input of the. The reset terminal (R) is supplied with the outputs of the first and second limit switches (35) (36), and a differentiating circuit (47) for differentiating the rising output of the OR gate (46). Are connected. The set output (Q) of the flip-flop (40) is the AND gate (37).
It is supplied to the other input of (38). Reference numeral (48) is a relay control circuit for controlling a relay contact (49 ') connected in parallel with the power switch (32), which is a base bias circuit of the first switching transistor (50) for controlling excitation of the relay (49) and ground. Second switching transistor (51) between
Is provided, and the output of the AND gate (52) to which the output of the inverter (14) and the output of the second limit switch (36) are input is supplied to the base thereof.

Next, the operation of the present invention having such a configuration will be described.

First, when the power switch (32) is closed, the rectifier circuit (3
By generating a DC voltage (+ B) from 3) and supplying a bias to the first switching transistor (50),
The conduction of the first switching transistor (50) energizes the relay (49) to close the relay contact (49 '). In this state, the moving body (5) is now in the upper position, the drive member (11) and the disc holding member (8) are in the state shown in FIG. 1, and the closing of the first limit switch (35) When the flip-flop (34) is set, the disc (2) is inserted into the disc holding member (8) from the insertion opening (3) and the disc (2) is pressed, the disc holding member (8) slides. , The starter lever (25) connected via the drive shaft (28) is rotated clockwise against the bias of the spring (29), so that the starter switch (26) is closed and the flip-flop is closed. (40) is set, and the AND gate (37) is opened by the set output (Q). The output of the AND gate (37) causes the motor control circuit (39) to drive the motor (31) counterclockwise. The rotation of the motor (31) is transmitted to the pinion gear (15) via a reduction mechanism (not shown), and the rack gear (14) is driven by rotating the pinion gear (15) counterclockwise, thereby driving the drive member (11). Is slid backwards. By the sliding of the drive member (11), the first inclined groove (17a) of the cam groove (17) and the projection (23) of the rotating lever (21) are engaged with each other, so that the rotating lever (21) moves to the chassis shaft ( 2
When the start lever (25) is rotated integrally with the clockwise direction by rotating it about the 2), the disk holding member (8) is slid backward in the moving body (5). (2) Aspirate. During this time, due to the movement of the drive member (11), the cam groove (18) formed in the bending plate (16) and the protruding shaft (19) of the moving body (5) are engaged, but the cam groove (18) Is formed in the first horizontal groove (18a), it does not act on the moving body (5) at this time. Then, when the disk (2) is completely sucked at the end of the engagement between the first inclined groove (17a) of the cam groove (17) and the protrusion (23) of the rotating lever (21), the rotation is continued. The protrusion (23) of the lever (21) engages with the vertical groove (17b) of the cam groove (17), so that the protruding shaft (19) of the moving body (5) becomes the inclined groove (18b) of the cam groove (18). By being engaged, the rotation lever (21) is not acted by the sliding of the drive member (11), and the moving body (5) is moved downward. When the disk (2) is moved to the playing position by the movement of the moving body (5), the disk (2) is fitted and positioned on a rotary drive shaft (not shown). Even after the disk (2) is positioned, the drive member (11) is further moved, so that the protrusion (23) of the rotation lever (21) causes the second inclined groove (17) of the cam groove (17).
When the rotation lever (21) is rotated clockwise again by being engaged with c), the disk holding member (8) is slid further rearward and completely separated from the disk (2), and the disk (2) It is moved to a position that does not interfere with rotation. During this time, moving body (5)
The protruding shaft (19) is engaged with the second horizontal groove (18c) of the cam groove (18) and is not operated at all. Thus, when the mounting of the disk (2) is completed and the drive member (11) is slid to the rear, the drive member (11) closes the second limit switch (36), so that the differential circuit (47) is released. An output is generated that resets the flip-flop (40) and the AND gate (3
7) The motor (31) is stopped to close (38). At the same time, the flip-flop (34) is reset. Thus, the disk (2) is attached to the playing position, and the disk (2) is operated by operating a play switch (not shown).
Is driven to rotate and is in a playing state. During this time, the moving body (5) is held at the lower playing position, so that the disk insertion opening (3) is closed by the lid body (10) integrally provided with the moving body (5). Prevents ingress of dust.

Next, description will be made on the case of exchanging disks for finishing another performance and playing another disk. At this time, first, a stop switch (not shown) is operated to stop the rotational drive of the disk, and then the moving body control switch (41) is operated. This sets the flip-flop (40),
The AND gate (38) is opened and the output is the motor control circuit (39).
Then, the motor (31) is driven to rotate clockwise, and the drive member (11) is moved forward by the meshing of the pinion gear (15) and the rack gear (14). The movement opposite to the above is performed by the movement of the driving member (11), and after the moving body (5) is moved upward, the rotation lever (21) is rotated in the counterclockwise direction to rotate the disk holding member (8). Is slid forward, the disc (2) is ejected to the state shown in FIG. At this time, when the first limit switch (35) is closed by the return of the driving member (11) to the front, an output is generated from the differentiating circuit (47) and the flip-flop (40) is reset, thereby the AND gate. (37) (38) are closed and the motor (31) is stopped. At the same time, the flip-flop (34) is set. Thus, the disc (2) can be exchanged, and if the disc (2) is exchanged, the playing state can be obtained in the same manner as described above.

Next, the operation for ending the performance will be described. First, when the power switch (32) is shut off to end the performance while the disc (2) is mounted in the playing position, the switch (42) interlocked with the power switch (32) is shut off.
When the gate (52) is opened and the second switching transistor (51) is made conductive, the first switching transistor (50) immediately becomes non-conductive, the relay (49) is demagnetized, and the relay contact (49 ') is opened, so that the power supply is provided. Is cut off. At this time, since the moving body (5) is located below, the disk insertion opening (3) is closed by the lid body (10).

Next, when the moving body (5) is in the upper position, the power switch (3
When the switch (42) is cut off, the drive member (11) is located at the front and the first limit switch (35) is closed at this time. Therefore, when the switch (42) is cut off, the AND gate (45) is opened. And because the flip-flop (40) is set, AND
The output of the gate (37) causes the motor control circuit (39) to rotate the motor (31) counterclockwise. Therefore, the moving body (5) is moved to the lower playing position in the same manner as described above.
The disk insertion opening (3) is closed by the lid body (10).
When the drive member (11) closes the second limit switch (36) when the movement of the moving body (5) is completed, the AND gate (52) is opened, whereby the second switching transistor (51) is opened.
As described above, the relay (49) is demagnetized by the conduction of, and the power is cut off by opening the relay contact (49 '). That is, even if the power switch (32) is cut off, the power supply is maintained until the moving body (5) moves downward, and the power is cut off when the movement is completed.

Therefore, even if the power switch (32) is turned on for the next performance, the moving body (5) is located below and the disc insertion opening (3) is closed so that the disc (2) cannot be inserted. In this case, the mobile control switch (4
By closing 1), the AND gate (38) is opened by setting the flip-flop (40) and the motor control circuit (3
9) rotates the motor (31) clockwise, and the moving body (5) is moved upward in the same manner as described above. Therefore, the disc insertion opening (3) is opened and the disc (2) can be inserted.

As described above, in the disk mounting apparatus of the present invention, when the disk is horizontally inserted halfway into the disk holding member, thereafter, the disk is automatically sucked by the driving force of the motor and then mounted at the playing position to mount the disk holding member. Since it is configured to be separated from the disc, the disc can be easily attached to the playing position and the operability can be improved.

[Brief description of drawings]

FIG. 1 is a plan view showing the structure of the disk mounting apparatus of the present invention, FIG. 2 is a front sectional view showing the main part of FIG. 1, FIG. 3 is a side view of the same, and FIG. 4 is an electric circuit diagram. . (2) ... disk, (5) ... moving body, (8) disk holding member, (10) ... lid body, (11) ... drive member,
(17) (18) …… Cam groove, (21) …… Rotating lever, (2
5) …… Starter lever, (31) …… Motor.

Claims (1)

[Claims] 1. A state in which a movable body is moved up and down between a disk insertion position and a playing position, a disk drive means arranged at the playing position, and a disk which is slidably mounted in the movable body in the front-rear direction and holds the disk. A holding member that is pulled into the device by
The driving means drives the moving body and the holding member, and the driving means moves the holding member holding the disk to a predetermined position in the moving body, and then moves the moving body to the playing position to move the disk. A disk mounting device comprising: a timing means that is fixed to the disk drive means and then further moves the holding member in a direction to release the holding of the disk.