JPH0262909B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a lid opening/closing device for a disc playback device, and in particular, even if the power switch for the disc playback device main body is turned off while the lid is open, all the power is not immediately turned off. First, it is configured to perform a lid closing operation. The details will be explained below with reference to Examples. In this embodiment, the disc playback device has a disc storage section that moves to an opening side position and a performance side position, and the lid is opened and closed in relation to this disc storage section. ing. Therefore, first, the entire disc playback device will be explained, and then the gist of the present invention will be explained. FIG. 1 shows an external perspective view of the disc playback device 1. As shown in FIG. The main body of the disc playback device 1 includes:
A disk insertion opening 2 and a lid 5 (shown in FIGS. 2 and subsequent figures) covering the disk insertion opening 2 are provided. The state shown in Figure 1 is an open state;
At this time, the disk storage section 3 is inserted into the disk insertion slot 2.
It has been raised to a position facing the opening. Therefore, inserting and removing (pulling out) the disk D is extremely easy. The structure of the disk storage section 3 is clearly shown in FIGS. 2 to 7. The disk storage section 3 has a pocket-like (bag-like) shape, and has a through hole 3 approximately in the center into which the disk holding/driving mechanism 4 can be inserted.
A through hole 3d into which a disk positioning pin 25 can be inserted is bored at the rear. The state shown in FIG. 2 is a state in which the disk storage section 3 is raised to face the disk insertion slot 2, and at this time, the lid 5 is opened. Therefore, disk D can be inserted. Insert disk D into disk insertion slot 2
When the disk D is inserted further into the disk storage portion 3, the disk D is suctioned and inserted by the loading mechanism 6 . The loading mechanism 6 (shown in FIG. 2 and FIGS. 5 to 7) includes a pair of loading rollers 7 that face the inside of the disk storage section 3 through the through hole 3e, and this loading roller 7. a lever 8 on which is erected, a support shaft 9 that rotatably supports the lever 8 with respect to the upper surface of the disk storage section 3, and a lever 8.
A rod 10 connected to the rod 10, a guide portion 3b provided on the upper surface of the disk storage portion 3 to slidably guide the rod 10, and a rod 10 connected to the rod 10 between the guide portion 3b and the rear end 10a of the rod 10. It consists of a coil spring 11 wound around a coil spring 10. The pair of loading rollers 7 are always urged inward (in the direction of sandwiching the disk) by the coil spring 11. Therefore, when the disk D is grasped with fingers and inserted into the disk storage part 3, the pair of loading rollers 7 exceed the diameter of the disk D, and then the pair of loading rollers 7, which are urged inward by the coil spring 11, The disk D is automatically sucked by the de-ing roller 7. Disk D is
The insertion tip side is attracted to a position where it comes into contact with the rotary switch lever 12a provided inside the disk storage section 3, the disk insertion detection switch SDI, and the locking pin 12b provided opposite thereto.
This condition is shown in FIGS. 3 and 5. At this time, a part of disk D is
more prominent. That is, when detaching (pulling out) the disk D, it is possible to grasp this protruding portion with fingers. Now, the disk storage section 3 moves from the opening side position shown in FIGS. 3 and 5 to the performance side position shown in FIGS. 4 and 7 via the path shown by the broken line in FIG. 4. The moving mechanism 13 for performing such movement will be explained with reference to FIG. 2. Moving mechanism 13
are guide pins 14 (only two on one side are shown in FIG. 2) provided on the side wall of the disk storage section 3;
A guide groove 15 for guiding the guide pin 14 provided on the device main body side, an engagement pin 16 provided on the side wall of the disk storage portion 3, and a feed nut 17 having an engagement portion 17a that engages with the engagement pin 16. , a feed screw 18 that is screwed into the feed nut 17, and a feed motor 19 that rotates the feed screw 18. Therefore, by rotating the feed motor 19, the disk storage section 3 is moved as shown in FIG. 3 (FIG. 5).
It will be moved from the illustrated position to the illustrated position in FIG. 4 (FIG. 7). When the disk storage section 3 is in the performance side position shown in FIG .
(as shown in FIGS. 2 to 4) and is rotationally driven. The disk holding/driving mechanism 4 includes a motor 20 supported by the device main body, a drive plate 21 fitted to the rotating shaft of the motor 20, and a holding plate 22 that is pressed onto the drive plate 21 by magnetic force and holds the disk D by sandwiching it therein. , a rotating member 23 that rotatably supports this holding plate 22, and this rotating member 23.
It is composed of a support shaft 24 fixed to the device main body 1 so as to be rotatably supported relative to the device main body.
A magnet is embedded in the driving board 21 side, a magnetic material is embedded in the holding board 22, and the holding board 23 is embedded in the driving board 21.
It is pressed against the surface by magnetic force. Now, when the disk storage section 3 is in the position shown in FIG. 3 (FIG. 5, FIG. 8A), the holding plate 22 and the drive disk 21 are located away from the disk storage section 3. When the disk storage part 3 moves horizontally and further lowers diagonally, the holding plate 22 and the drive plate 21 enter into the disk storage part 3. Disk storage section 3
When the center of the disk D inserted into the disk storage section 3 is moved to a point where it substantially coincides with the center of the disk holding/driving mechanism 4, the large diameter portion of the disk positioning pin 25 moves toward the center of the disk D. , and further movement of the disk D is prevented (see FIGS. 6 and 8C). and,
Only the disk storage section 3 then moves diagonally downward to the playing position shown in FIG. 4 (FIGS. 7 and 8B). Therefore, in this playing position, the disc D, the rotary switch lever 12a, the disc insertion detection switch SDI, and the locking pin 12b are
The contact between the two parts has been released (see Fig. 7). In addition, in the playing position, the rear end 10a of the rod 10 contacts the rear wall 1a of the disc playback device, and the pair of loading rollers 7 open in the opposite direction of the arrow in FIG. The contact between the roller 7 and the disk D is also released (see FIG. 7).
Furthermore, in the performance position, the disc D faces the small diameter portion of the disc positioning pin 25, and therefore does not come into contact with this pin 25 (see Fig. 4).
Figure 8B). Therefore, when the disc storage section 3 is in the performance position, the disc D is held only by the disc holding/driving mechanism 4 and is rotated smoothly. Next, the lid opening/closing mechanism 26, which is the gist of the present invention, will be explained. The lid 5 can be opened and closed with respect to the main body of the disc playback device 1 (in this embodiment, it can be moved up and down).
(see FIG. 2), and is always biased upward (in the lid closing direction) by a coil spring 27. The lid body 5 is provided with a cam portion 5a, and when the disk storage portion 3 is in the opening side position, the lower end 3c of the disk storage portion 3 is in contact with the upper surface of the cam portion 5a, so that the lid body 5 is The lid is in an open state (see Figure 9). Now, when the disk storage section 3 starts moving to the performance side position by the moving mechanism 13 , the lower end 3c of the disk storage section 3 comes into contact with the inclined surface of the cam section 5a, and the lid body 5 is moved by the elastic force of the coil spring 27. The lid is moved in the direction of closing the lid, and the lid is completely closed during the playing state. Conversely, when the disk storage section 3 starts to move from the performance side position to the opening side position, the lower end 3c of the disk storage section 3 pushes up the inclined surface of the cam section 5a, and the lid body 5 moves in the lid opening direction. (See Figure 10). That is, the cam portion 5a, the coil spring 2
7. The lower end 3c of the disk storage section 3 is the lid opening/closing mechanism 2
6. Here, the operations up to now will be summarized with reference to the time chart of FIG. 11 and the block diagram of FIG. 12. In addition, in FIG. 12, A indicates that the disk storage section 3 is in the opening side position (FIGS. 3 and 5).
Figure 8A) shows the state in which the disc storage section 3 is in the non-opening side position, and B shows the state in which the disc storage section 3 is in the performance side position (Figs. 4, 7, and 8B). The switch contacts are shown in the non-playing position. It is now assumed that the lid body 5 is in an open state and the disk storage section 3 is in the opening side position. From this state, insert the disk D from the disk insertion slot 2 into the disk storage compartment 3.
When the disc D is inserted into the disc D, the disc D is suctioned and inserted by the loading roller 7, and comes into contact with the disc insertion detection switch SDI. Disk insertion detection switch
When the SDI is turned on, the output of the differentiating circuit 28 is passed through the up (opening side position) detection switch SUP/OR gate 34 to the flip-flop (hereinafter referred to as F/F).
) 29, and this F·F 29 is set. Therefore, the Q output of F·F 29 becomes H level, and the output of gate 30 becomes H level. That is, a forward rotation instruction output to the feed motor 19 is obtained, the motor 19 starts rotating, and the disk storage section 3 starts moving. At this time, the up detection switch SUP switches to . Furthermore, while the disk storage section 3 is moving to the performance side position, the disk D is activated by the disk insertion detection switch SDI.
As the distance increases, this switch SDI switches to the off side. When the disk storage section 3 moves to the performance side position, the feed nut 17 comes into contact with the down (performance side position) detection switch SDO, which switches the switch SDO to the B side, and the output of the gate 30 becomes
The level becomes L level, and forward rotation of the feed motor 19 is stopped. This state becomes the disc playing state. To remove the disk D, operate the eject button 37 (shown in FIG. 1) to turn the normally open eject switch SE on. Then, F.F29 is reset and the output becomes H level. Since the up detection switch SUP is switched to , the output of the gate 31 becomes H level, and a reverse rotation instruction output to the feed motor 19 is obtained. Therefore, the motor 19 starts rotating in reverse,
The disk storage section 3 starts moving to the opening side position. At this time, the down detection switch SDO switches to . As the movement of the disk storage section 3 progresses, the disk insertion detection switch SDI is switched to the on side, but at this time, since the up detection switch SDI is switched to the ON side, F.F29 is not set.
That is, the motor 19 continues to rotate in reverse. When the disk storage section 3 moves to the opening side position, the feed nut 17 comes into contact with the up detection switch, SUP, and the switch SUP is switched to A.
The output of the gate 31 becomes L level and the rotation of the feed motor 19 is stopped. After that, when the disk D is pulled out, the disk insertion detection switch SDI is also turned off. Now, the gist of the present invention is that even if the power switch SP is turned off, the power is not turned off immediately, but the lid is always closed. That is,
If the power switch SP is turned off while the disk storage compartment 3 is in the open position and no disk is inserted, the H of the AND gate 32
The F/F 29 is set by the level output, the feed motor 19 is rotated in the normal direction, and the disk storage section 3 is moved to the performance side position, and in the middle of this, the lid is closed. When the disk storage section 3 has completely moved to the performance side position, the down detection switch SDO is switched to the B side and the output of the AND gate 33 becomes H level, which becomes the power off instruction output and the main power switch ( (not shown) is turned off, and all power is turned off. Note that it is inconvenient for the above operation to be performed and the power to be turned off while the disk D is inserted into the disk storage section 3 in the open position, since the disk will be left behind inside the device. . Therefore, in this embodiment, in such a case, the above-mentioned lid closing operation and power cutoff operation accompanying the movement of the disk storage section 3 are prohibited. Specifically, F.F29 is not set depending on the states of the disk insertion detection switch SDI and the up detection switch SUP. Furthermore, when the disk D is taken out from the disk storage section 3 in such a state, the lid closing operation and the power supply cut-off operation are automatically performed in response to the movement of the disk storage section 3. When the power switch SP is turned on again with the power turned off and the lid closed, a main power switch (not shown) is turned on in response. At the same time, the output of the differentiating circuit 35 is output from the OR gate 3.
6 to F.F29, and the output causes the feed motor 19 to start rotating in reverse. Therefore, the disk storage section 3 moves to the opening side position, and the lid body 5 is also opened. According to the present invention described above, when the power switch is turned off while the lid is in the open state and the disk is not inserted into the disk storage section, the lid is always in the closed state. Dust can be prevented from entering through the disk insertion slot.
In addition, if the lid is in an open state and a disk is inserted into the disk storage section, the power supply should not be turned off immediately with the lid closing operation, and the disk may be removed from the disk storage section. Since such an operation is executed in response to the input information, it is possible to prevent the inconvenience of the apparatus being turned off while the disc remains confined within the main body of the playback apparatus.

[Brief explanation of drawings]

FIG. 1 is a perspective view of a disc playback device, FIG. 2 is a perspective view of a disc mounting device according to the present invention, FIG. 3 is a diagram showing the disc storage section in the open position, and FIG. FIGS. 5, 6, and 7 are diagrams showing different states for explaining the operation of the loading mechanism;
Fig. 8 is a diagram showing the relationship between the disk and the disc positioning pin, Fig. 9 is a diagram showing the lid opening state, Fig. 10 is a diagram showing the starting state of the lid opening operation, Fig. 11 is a time chart diagram, and Fig. 12 The figure is a block diagram. 2 is a disk insertion slot (opening), 5 is a lid body, 26
is the lid opening/closing mechanism, 32 is the AND gate, SP is the power switch, and SDI is the disk insertion detection switch.

Claims (1)

[Scope of Claims] 1. A disk storage section that moves between an opening formed in the device main body, an opening side position where a disk can be attached and removed, and a playback side position where a disk can be played; a driving means for driving; a lid that opens the opening when the disk storage section is in the opening side position and closes the opening when the disk storage section is in the playback side position; and the disk storage section in the opening side position. a disk storage detection means for detecting that a disk is stored in the storage area; an opening position detection means for detecting that the disk storage section is in an open position; a power switch; A control means is provided for controlling power off and drive of the disk storage section according to the states of the detection means and the opening position detection means, and the control means is configured to detect that the disk storage section is in the open position when the opening position is detected. When the power switch is turned off in the case where the power switch is turned off in the case where the power switch is turned off when the power switch is turned off, when the disk storage detection means detects that no disk is stored in the disk storage section, the disk storage section is turned off. After transferring the disc to the playback side position and closing the opening with the lid, the power is turned off, and if it is detected that a disc is stored in the disc storage part, the disc is removed from this storage part. A disc playback device characterized in that the opening is closed by the lid and the power is turned off in response to the removal of the disk.