JPH03709B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a disk mounting device for a digital audio disk (DAD), and more particularly to a disk mounting device configured so that when a disk is inserted horizontally, it is automatically sucked and mounted at a performance position.

Embodiments of the present invention will be described below with reference to the drawings. 1
is the case of the disk performance device, with disk 2 on the front.
An insertion opening 3 into which the disc is inserted is formed, and a disc playing mechanism and a mounting mechanism are provided on the chassis 4. Reference numeral 5 indicates guide shafts 6, 6 installed in the chassis 4.
The movable body is supported by and mounted so as to be able to move up and down, and as shown in FIG.
7, it is biased upward to prevent wobbling. A sliding member 8 is slidably mounted inside the movable body 5, and is slid within the movable body 5 by a drive mechanism described later. 9, 9 are pivot shafts 10, 1 of the sliding member 8
A disk holding member rotatably attached to the
The triangular guide grooves 11, 11 are formed in an arc shape. The guide grooves 11, 11 are formed so as to be extended by a distance a from the center of the disk 2 and engaged with the disk 2 when the disk 2 is inserted.
Also, a spring 12 is installed between the disk holding members 9, 9.
is constructed and urges the respective disk holding members 9, 9 counterclockwise and clockwise, but the bent pieces 13, 13 of the disk holding members 9, 9 contact the sliding member 8, causing rotation. are regulated. Further, control bars 14, 14 projecting downward are formed at the rear ends of the disk holding members 9, 9.
The tip is formed into a tapered shape as shown in FIG. 5, and is positioned so as to be engaged with an opening 15 provided in the chassis 4. The moving body 5 is configured to correspond to the insertion opening 3 of the disk 2 at the upper position, and when the disk 2 is inserted into the disk holding members 9, 9 from the insertion opening 3, it is moved by a mechanism described later. The body 5 is moved downward to the playing position. Reference numeral 16 denotes a lid for closing the insertion port 3 that projects upward from the movable body 5, and closes the insertion port 3 when the movable body 5 moves downward.

17 is a driving member that drives the movable body 5 and the sliding member 8, and the chassis shafts 18, 18 are connected to the long holes 19, 1.
A rack gear 20 formed on one side is slidably housed in a rack gear 9, and is slid by being driven by a pinion gear 21 to which the driving force of the motor is transmitted via a deceleration mechanism (not shown). It is configured. Cam grooves 23 and 24 having different shapes are formed on the bending plate 22 bent downward on the upper surface and side of the drive member 17, respectively, and the cam groove 24 has a groove protruding from the side surface of the movable body 5. A protruding shaft 25 is fitted. Further, a roller member 26 is provided at the lower end of the bending plate 22 and contacts the lower surface of the chassis 4.
In addition to smoothing the sliding movement of the drive member 17
It restricts the upward movement of. Reference numeral 27 denotes an L-shaped rotating cover rotatably attached to the chassis shaft 28. A protrusion 29 provided at one end engages with the cam groove 23 of the drive member 17, and a pivot 30 implanted at the other end is activated. A lever 31 is rotatably placed thereon, and a starting switch 32 which is closed by rotation of the starting lever 31 and drives a motor (not shown) is also placed thereon. The activation lever 31 has a long hole 33 formed at one end, is engaged with a drive shaft 34 implanted in the sliding member 8, and is driven by a spring 35 wound around the pivot shaft 30 and fixed to the rotation lever 27 and the activation lever 31. Although it is biased counterclockwise, its rotation is restricted by the upward bending piece 36 of the rotation lever 27. The length of the drive shaft 34 is the same as that of the moving body 5.
is moved to the lower playing position, the activation lever 3
It is formed to a length that maintains an engaged state with the elongated hole 33 of No. 1.

FIG. 6 is an electric circuit diagram for controlling the drive of the motor 37 that drives the mounting mechanism, and when the power switch 38 is closed, the rectifier circuit 39 outputs a DC voltage (+B) that drives the motor 37. It is configured. Reference numeral 40 denotes a flip-flop which is set and reset by closing the first and second limit switches 41 and 42 provided at the sliding end of the drive member 17, and the output Q is outputted from an AND gate in order to select the rotational direction of the motor 37. It is supplied to a motor control circuit 45 via 43 and 44. In this motor control circuit 45, transistors are configured in a bridge configuration so that the rotation direction of the motor 37 is switched by the outputs of the AND gates 43 and 44.
By switching the driving current direction of motor 3,
7's rotation direction is controlled. Reference numeral 46 indicates the movable body 5 when the start switch 32 is closed by the start lever 31.
Moving body control switch 4 for moving up and down arbitrarily
7 is closed and when the power switch 38 and interlocking switch 48 are shut off, that is, when the power switch 38 is shut off, the first and second limit switches 41,
The flip-flop is configured to be reset when 42 is closed, and the set terminal S has three inputs.
An OR gate 49 is connected to which the start switch 32 is connected to the first input, the mobile control switch 47 is connected to the second input, and the switch 48 is connected to the inverter 50 and the AND gate 51 to the third input.
The output of the first limit switch 41 is supplied to the other input of the AND gate 51. An OR gate 52 to which the outputs of the first and second limit switches 41 and 42 are supplied, and a differentiation circuit 53 for differentiating the rising output of the OR gate 52 are connected to the reset terminal R. Also, the set output Q of flip-flop 46 is supplied to the other inputs of AND gates 43 and 44.
A relay control circuit 54 controls a relay contact 55' connected in parallel to the power switch 38, and a second switching transistor 57 is connected between the base bias circuit of the first switching transistor 56, which controls excitation of the relay 55, and the ground. The output of an AND gate 58, which has its base inputted with the output of the inverter 50 and the output of the second limit switch 42, is supplied.

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

First, when the power switch 38 is closed, a DC voltage (+B) is generated from the rectifier circuit 39 and a bias is supplied to the first switching transistor 56.
The relay 55 is energized by the conduction of the relay contact 55'
Close. In this state, the moving body 5 is now in the upper position, and the driving member 17 and the sliding member 8 are in the first position.
In the state shown in the figure, the first limit switch 41
When the flip-flop 40 is set by closing, when the disk 2 is inserted from the insertion opening 3 into the guide grooves 11, 11 of the disk holding members 9, 9, the disk holding members 9, 9 are biased by the spring 12. When pushed outward by the resisting disk 2 and inserted more than the center, the disk holding members 9, 9 are rotated inward by the force of the spring 12 to stably hold the disk 2. When the disk 2 is further pressed in this state, the activation lever 31 connected via the drive shaft 34 is moved by the sliding of the sliding member 8.
By being rotated clockwise against the bias of the spring 35, the flip-flop 46 is set when the start switch 32 is closed, and the set output Q causes the flip-flop 46 to be set.
AND gate 43 is opened. Upon generation of the output from the AND gate 43, the motor control circuit 45 drives the motor 37 counterclockwise. The rotation of the motor 37 is transmitted to the pinion gear 21 via a speed reduction mechanism (not shown), and by rotating the pinion gear 21 counterclockwise, the drive member 17 is slid rearward by the drive of the rack gear 20. By sliding the drive member 17, the inclined groove 23a of the cam groove 23 and the rotating lever 2
7, the rotation lever 27 is rotated clockwise about the chassis shaft 28, and the starting lever 31 is also rotated clockwise, thereby moving the sliding member 8 to the moving body. 5 to suck the disk 2. During this time, as the drive member 17 moves, the cam groove 24 formed in the bending plate 22 and the protruding shaft 25 of the moving body 5 are engaged, but since the cam groove 24 is formed in the horizontal groove 24b, this There is no effect on the time moving body 5. When the disc 2 is completely sucked at the end of engagement between the inclined groove 23a of the cam groove 23 and the protrusion 29 of the rotary lever 27, the protrusion 29 of the rotary lever 27 then moves into the cam groove 29.
3 and the protruding shaft 25 of the movable body 5.
is engaged with the inclined groove 24b of the cam groove 24, and as a result of the sliding of the drive member 17, the rotation lever 2
7 is not acted upon, and the movable body 5 is moved to the lower performance position. At this time, the tapered sides of the control bars 14, 14 of the disk holding members 9, 9
By engaging with the opening 15 of the disk holding member 9, the disk holding members 9, 9 are pushed to the left in FIG. is rotated. Therefore, the disk holding members 9, 9 are released from holding the disk,
The disk 2 is fitted and positioned on a rotational drive shaft (not shown). When the mounting of the disk 2 is completed and the driving member 17 is slid to the rear, the driving member 17 closes the second limit switch 42, and an output is generated from the differentiating circuit 53, which resets the flip-flop 46 and opens the AND gate. 43,
44, the motor 37 is stopped. At the same time, flip-flop 40 is reset. The disk 2 is thus mounted at the performance position, and the disk 2 is driven to rotate by operating a play switch (not shown) to enter the performance state. During this time, since the movable body 5 is held in the lower performance position, the disk insertion slot 3 is closed by a lid body 16 that is integrally provided with the movable body 5, thereby preventing dust from entering. .

Next, a case will be explained in which the disk is replaced after a performance is finished and a different disk is to be played. At this time, first, a stop switch (not shown) is operated to stop the rotation of the disk, and then the moving body control switch 47 is operated. This causes flip-flop 4
6 is set, AND gate 44
When the motor 37 is opened and the output is supplied to the motor control circuit 45, the motor 37 is rotated clockwise, and the drive member 17 is moved forward by the meshing of the pinion gear 21 and the rack gear 20. The movement of the drive member 17 causes an operation completely opposite to that described above,
After moving the movable body 5 upward, the sliding member 8 is slid forward by rotating the rotating lever 27 in the counterclockwise direction, thereby ejecting the disk 2 to the state shown in FIG. 1. At this time, when the first limit switch 41 is closed due to the return of the driving member 17 to the front, an output is generated from the differentiating circuit 52 and the flip-flop 46 is closed.
By resetting the AND gate 43,
44 is closed and the motor 37 is stopped. At the same time, flip-flop 40 is set. In this way, disk 2 can be replaced, and disk 2 can also be replaced.
Once you have replaced it, you can put it into playing mode in the same way as described above.

Next, the operation to end the performance will be explained. First, when the power switch 38 is shut off in order to end the performance with the disc 2 mounted at the performance position, the AND gate 58 is opened by the shutoff of the switch 48 which is interlocked with the power switch 38, and the second switching transistor 57 is turned off. By making the first switching transistor 56 conductive, the first switching transistor 56 immediately becomes conductive.
becomes non-conductive, demagnetizes the relay 55, and opens the relay contact 55', thereby cutting off the power supply. At this time, since the movable body 5 is located below, the disk insertion slot 3 is closed by the lid 16.

Next, when the power switch 38 is cut off when the movable body 5 is in the upper position, the driving member 17 is located forward and closes the first limit switch 41, so that when the switch 48 is cut off, the AND
Since the gate 51 is opened and the flip-flop 46 is set, the output of the AND gate 43 causes the motor control circuit 45 to rotate the motor 37 counterclockwise. Therefore, the movable body 5 is moved to the lower performance position in the same manner as described above, and the disc insertion slot 3 is closed by the lid 16. When the drive member 17 closes the second limit switch 42 upon completion of the movement of the moving body 5, the AND gate 58 is opened.
When the second switching transistor 57 becomes conductive, the relay 55 is demagnetized as described above, and the relay contact 5
When 5' is opened, the power is cut off. That is, even if the power switch 38 is shut off, the power supply is maintained until the movable body 5 moves downward, and the power supply is shut off when the movement is completed.

Therefore, even if the power switch 38 is turned on for the next performance, the movable body 5 will be located below and the disc insertion slot 3 will be closed, making it impossible to insert the disc 2. By closing the moving body control switch 47, the AND gate 44 is opened by setting the flip-flop 46, and the motor control circuit 45 rotates the motor 37 clockwise, and the moving body 5 is moved upward in the same manner as described above. Ru. Therefore, the disk insertion slot 3 opens and the disk 2 can be inserted.

As described above, the disk mounting device of the present invention is configured to hold a horizontally inserted disk, suck it, and then release the holding of the disk when moving to the performance position, so that the disk can be reliably held. Therefore, it is suitable for in-vehicle devices that are accompanied by vibrations.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing the disk mounting device of the present invention, FIG. 2 is a side view showing the main parts of FIG. 1, FIG. 3 is a plan view showing the main parts of FIG. The figure is a front sectional view of FIG. 3, FIG. 5 is a diagram showing the main part of FIG. 2, and FIG. 6 is an electric circuit diagram. 2... Disc, 5... Moving body, 8... Sliding member, 9... Disc holding member, 17... Drive member, 27... Rotating lever, 31... Starting lever,
37...Motor.

Claims (1)

[Claims] 1. A moving body that is moved up and down between a disk insertion position and a performance position, a sliding member that is slidably mounted within the moving body, and a guide groove that is rotatably mounted on the member and that holds the disc. two disk holding members connected to each other by a spring; a driving means for driving the movable body and the sliding member with the driving force of a motor; A disk mounting device comprising means for releasing disk retention.