JPH0459696B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a disc mounting device for a disc playback device, and in particular, it is an object of the present invention to provide a disc mounting device that allows easy attachment and detachment of a disk and is simple in construction. FIG. 1 shows an external perspective view of a disc playback device 1 having a disc mounting device according to the present invention. The main body of the disc playback device 1 is provided with a disc insertion slot 2 and a lid 5 (shown in FIGS. 2 and subsequent figures) that covers the disc insertion slot 2. The state shown in FIG. 1 is an open state, and at this time, the disk storage section 3 is raised to an open position facing the disk insertion slot 2. Therefore, disk D
It is extremely easy to insert and remove (withdraw). Note that the disk insertion slot 2 is an opening in the present invention. The configuration of the disk storage section 3 is shown in Figures 2 to 7.
It is clearly shown in the figure. The disk storage part 3 is pocket-shaped (bag-shaped) (inner surface is for protection of the disk,
There is a through hole 3a approximately in the center where the disk holding/driving mechanism 4 can be inserted, and a through hole 3d at the rear where the disk positioning pin 25 can be inserted. It is perforated. 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. When the disk D is inserted into the disk storage portion 3 through the disk insertion opening 2, the disk D is inserted by suction by the loading mechanism 6 . The loading mechanism 6 (shown in FIGS. 2 and 5 to 7) has a through hole 3e.
A pair of loading rollers 7 facing the inside of the disk storage section 3, a lever 8 on which the loading rollers 7 are mounted, and a support shaft 9 that supports the lever 8 rotatably with respect to the upper surface of the disk storage section 3. ,
Rod 10 connected to lever 8, this rod 1
A guide section 3b is provided on the upper surface of the disk storage section 3 to slidably guide the rod 10.
It consists of a coil spring 11 wound around.
The loading roller 7 is rotatable and has a concave shape in the center to facilitate insertion of the disk D. The pair of loading rollers 7 are always urged inward (in the direction of sandwiching the disc) by the coil spring 11. Therefore, when you grasp the disk D with your fingers and insert it into the disk storage section 3, a pair of loading rollers 7
After the diameter of the disc D exceeds the diameter of the disc D, the disc D is automatically attracted by a pair of loading rollers 7 that are urged inward by a coil spring 11. The disk D is sucked to a position where its insertion end side contacts the rotary switch lever 12a provided inside the disk storage portion 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 the disc D protrudes from the disc playback device 1 . 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 provided on the device main body side to guide the guide pin 14, an engagement pin 16 provided on the side wall of the disk storage portion 3, a feed nut 17 having an engagement groove 17a that engages with the engagement pin 16, A feed screw 18 screwed into this feed nut 17, this feed screw 1
8 and a feed motor 19 that rotates the motor. Therefore, by rotating the feed motor 19, the disk storage section 3 is moved from the position shown in FIG. 3 (FIG. 5) to the position shown in FIG. 4 (FIG. 7). Note that the feed nut 17 is a feed member in the present invention. 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 main body of the device, a drive plate 21 fitted to the rotating shaft of the motor 20, and a holder that is pressed onto the drive plate 21 by magnetic force and inserted into and held by the disk D. A plate 22, a rotating member 23 that rotatably supports the holding plate 22, and a 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 drive board 21 side, and a magnetic material is embedded in the holding board 22, and the holding board 22 is connected to the drive board 21.
It is pressed against the surface by magnetic force. Now, when the disk storage part 3 is in the position shown in FIG. 3 (FIG. 5, FIG. 8A), the holding plate 22 and the drive plate 21 are located away from the disk storage part 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 8). 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). Also,
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. 7 and the disk D are 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. Now, the gist of the present invention lies in the configuration of the moving mechanism 13 that is devised so that the disc storage section 3 can be smoothly moved to two positions: the opening side position and the performance side position. Its feature lies in the relationship between the engagement pin 16, which constitutes a transmission means for transmitting the movement of the feed nut 17 to the disk storage portion 3, and the engagement groove 17a provided in the feed nut 17. This is the 9th
This will be explained with reference to FIG. In this embodiment, the engagement groove 17a has a substantially doglegged shape, and the engagement groove 17a has a substantially doglegged shape, and is aligned in the parallel linear movement direction of the disk storage section 3.
It is approximately perpendicular to l ₁ and the diagonally downward movement direction l ₂ .
With this configuration, the driving force transmitted from the feed nut 17 to the disk storage section 3 remains substantially constant and efficiently even when the disk storage section 3 moves up and down in the _l2 direction. (See Figure 10, a, b, c). This applies, for example, when the engagement groove 17a is configured linearly (first
(See Figure 0). As shown in FIG. 9, if the feed nut 17 is guided by the cylindrical guide shaft 33, the load generated during movement of the disk storage section 3 will not have an adverse effect on the feed screw mechanism, so that the disk storage section 3 can be easily moved. The movement of part 3 becomes even smoother. Next, the lid opening/closing mechanism 26 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 at the same time; see FIG. 2), and is always urged upward (in the direction of closing the lid) by a coil spring 27. There is. A cam portion 5 is provided on the lid body 5.
a is provided, and when the disk storage section 3 is in the opening side position, the lower end 3c of the disk storage section 3 is in contact with the upper surface of the cam section 5a, so the lid body 5 is in the open state (No. (See Figure 11). 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 disc storage section 3 is moved from the performance side position,
When it starts moving to the opening side position, the lower end 3c of the disk storage part 3 pushes down the inclined surface of the cam part 5a, and the lid body 5 moves in the opening direction (see FIG. 12). That is, the cam portion 5a, the coil spring 27, and the lower end 3c of the disk storage portion 3 constitute a lid opening/closing mechanism 26 . Incidentally, the lower end 3c of the disk storage portion 3 and the cam portion 5a of the lid 5 constitute a lid driving mechanism in the present invention. Finally, the operation of the disk mounting device according to the present invention will be summarized with reference to the time chart of FIG. 13 and the block diagram of FIG. 14. In FIG. 14, A shows the state in which the disk storage section 3 is in the opening side position (FIGS. 3, 5, and 8A), A shows the state in which the disk storage section 3 is in the non-opening side position, and B shows the state in which the disk storage section 3 is in the non-opening side position. The state where 3 is in the performance side position (FIGS. 4, 7, and 8B) shows the switch contact when it is in the non-performance 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. In this state, when the disk D is inserted into the disk storage portion 3 through the disk insertion opening 2, the disk D is sucked and inserted by the loading roller 7, and comes into contact with the disk insertion detection switch SDI. Disk insertion detection switch
When SDI is turned on, the output of the differentiating circuit 28 is inputted to a flip-flop (hereinafter referred to as F.F.) 29 via an up (opening side position) detection switch SUP, and this F.F.29 is set. Therefore,
The Q output of F・F29 becomes H level, and gate 3
The output of 0 becomes H level. That is, feed motor 1
A forward rotation instruction output is obtained for the motor 9, and 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 moves away from the disk insertion detection switch SDI, and this switch SDI is switched to the OFF side. When the disk storage section 3 moves to the performance side position, the feed nut 17 turns down (performance side position) detection switch SDO.
By contacting the switch SDO, the switch SDO is switched to the B side, the output of the gate 30 becomes L level, and the forward rotation of the feed motor 19 is stopped. This state becomes the disc playing state. To eject disk D, press eject button 3.
2 (shown in FIG. 1) to switch the normally open eject switch SE to the on side. 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, the up detection switch SUP is switched to the ON side, so 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,
When the feed nut comes into contact with the up detection switch SUP, the switch SUP switches 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. According to the present invention described above, since the disk storage section can be moved to two positions, the opening side position and the performance side position, it is extremely easy to attach and detach the disk. Furthermore, the drive mechanism for driving the disk storage section includes a guide groove that guides the disk storage section, a feeding member that moves in the front and back direction, an engagement groove arranged in the feeding member, and a drive mechanism that is bored in the disk storage section and includes Since there is only an engagement pin that engages in common with the guide groove and the engagement groove, the disk mounting device can be configured with a simple structure. In addition, a lid body is provided to open and close the disk insertion slot,
Since this lid is opened only when replacing a disc, it is possible to prevent dust from entering the player from the outside, and the lid is opened and closed using the drive of the disc storage section. Therefore, there is no need to provide a separate drive for opening and closing the lid, and furthermore, the movement of the disk storage section and the opening and closing of the lid can be controlled in a timely manner.

[Brief explanation of drawings]

FIG. 1 is a perspective view of the disc playback device, FIG. 2 is a perspective view of the 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 moving mechanism part, Fig. 10 is a diagram for explaining the operation of the moving mechanism, and Fig. 1
1 is a diagram showing the lid opening state, FIG. 12 is a diagram showing the starting state of the lid opening operation, FIG. 13 is a time chart, and FIG. 14 is a block diagram. 2...Disk insertion slot, 3...Disk storage section, 1
5... Guide groove, 16... Engagement pin, 17... Feed nut (feed member), 17a... Engagement groove.

Claims (1)

[Scope of Claims] 1. An opening 2 arranged in the front panel, and a disk storage section arranged in the main body of the device, which moves between an opening side position where disks can be replaced and a playback side position where disks can be played. 3, a lid 5 disposed on the device main body side so as to be able to open and close the opening, and a lid drive for driving the lid in conjunction with the disk storage using the driving force of the disk storage. Mechanism 5
a, 3c, a guide groove 15 disposed on the internal chassis and having a horizontal portion and a descending portion extending to the rear end of this horizontal portion, and a feeding member 1 that moves in the front-rear direction.
7, an engagement groove 17a bored in the feed member and extending in the vertical direction, and an engagement pin 16 protruding from the side surface of the disk storage portion and commonly engaged with the guide groove and the engagement groove. By moving the feeding member, the disk storage section is horizontally moved and lowered along the guide groove, thereby transporting the disk between the opening side position and the playback side position, and also moving the lid body. A disk mounting device characterized in that it opens and closes in conjunction with movement of the disk storage section.