JP3080852B2 - Disk playing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk playing device for selecting one disk from a disk storage portion for storing a plurality of disk-shaped information recording media (hereinafter referred to as disks) and playing the disk. .

[0002]

2. Description of the Related Art In recent years, as a disk playing device, there has been a device for selecting and taking out one disk from a plurality of disks stored in a disk storage section and transporting the disk to disk playing means for performing. Proposed. Japanese Patent Application Laid-Open No. 4-27 is an example of this type of disk playing device.
There is a multi-load disc automatic playing device disclosed in Japanese Patent No. 1057. This multi-load automatic disk playing apparatus can accommodate 360 disks in a two-row vertical disk storage section, has disk transport means in the center of the apparatus, and has
It has a disk playing means. In the disk storage section, a tray on which disks are mounted is stored in a rack. The system in which a disk is placed on a tray and stored in a rack is a system in which a disk can be reliably stored in a disk storage unit mechanically and can be easily taken out.

[0003]

However, in the above configuration, since the disk carrying means and the disk playing means are separate bodies, respective dedicated spaces are required, and the apparatus becomes relatively large. Further, since the disk is transported to the lower disk playing means, the disk transport time is long.

Therefore, in addition to the conventional apparatus, a small, inexpensive, and highly reliable apparatus with a relatively small number of stored disks is desired. Therefore, the number of stored disks is 50
A disk playing means was mounted on a chassis that moved to the position of each disk in the disk storage section, and a device capable of starting a performance quickly with a short disk transport time was planned.
In realizing this apparatus, reducing the weight and size of the moving chassis is effective in reducing the size of the apparatus. Therefore, it is necessary to design the "tray transfer mechanism for pulling out the disk mounting tray of the disk storage section and transferring it onto the disk playing means" mounted on the chassis to be lightweight, simple and compact. Further, it is desired that the tray transfer mechanism be an inexpensive mechanism that can widen the tolerance of component accuracy.

Further, such a device is used to continuously play a large number of disks for a long time. Therefore, the reliability of the device is important. SUMMARY OF THE INVENTION An object of the present invention is to store a plurality of disks, to be relatively small, inexpensive,
Another object of the present invention is to provide a highly reliable disk playing device. In detail, a reliable, simple, compact and inexpensive tray transfer mechanism capable of accurate tray transfer can be obtained. Therefore, errors in the tray transfer distance due to variations in component precision can be absorbed, and the And to provide a tray transfer mechanism for accurately positioning the tray. Another object is to provide a device having good serviceability in the event of a failure.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a disk in which a plurality of substantially flat trays on which a disk serving as a disk-shaped information recording medium is placed are stacked in a vertical direction. A storage unit, a disk playing unit including a turntable and an optical pickup, a chassis mounted with the disk playing unit, a unit for moving the chassis to a position corresponding to an individual tray of the disk storage unit, A disk playing device having a tray transfer mechanism mounted to transfer the tray between the disk storage section and the disk playing means,
The tray transfer mechanism has a notch-shaped hook engaging portion orthogonal to the tray transfer direction in a part of the tray, and a hook shaped hook that rotates and engages with the hook engaging portion. A hook supporting slider that rotatably supports the hook and moves along a guide; and a spring that biases the hook on the hook supporting slider in a tray engaging direction, wherein the hook supporting slider stores the disk. At a position close to the unit side, the hook can rotate on the hook support slider and take a position separated from the tray, and when the hook is located in a range to transfer the tray, By providing a stop member extending in the tray transfer direction on the chassis, the hook rotates in a direction opposite to the direction in which the tray is engaged with the hook. Some of the hook before the engagement of the ray deviates is configured to abut on the stop member.

[0007]

According to the present invention, when the hook rotates in the direction opposite to the direction in which the tray is engaged by the stop member, a part of the hook contacts the stop member before the engagement with the tray is released. Touch

[0008]

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic view showing an internal layout of a disk playing device according to an embodiment of the present invention, FIG. 2 is a side view of an internal mechanism of the disk playing device, and FIG. FIG. 4 is a cross-sectional view taken along the line CC in FIG. 2, FIG. 5 is a cross-sectional view taken along the line CC in FIG. 4, showing the tray being pulled out, and FIG. 6 is a cross-sectional view taken along the line DD in FIG. 7, FIG. 7 is a cross-sectional view taken along line DD of FIG. 6, showing the inner tray pulled out state, FIG. 8 is a front view (partial cross section) of a mechanical part of the disc playing apparatus, and FIG. FIG. 10 is an external view (side view) of the disk carrying / playing unit, FIG. 11 is an exploded view of the vicinity of the hook support slider from the front and side, and FIG. 12 is a plan view of the disk playing unit. Figure and turntable 13 is a plan view and a side view from four directions of the chassis alone, and FIG. 14 is a view showing a tray, a tray stopper, and a tray stopper opening / closing arm and showing a positional relationship thereof (a plan view and a side view). FIG. 15 is a view showing a state in which the tray stopper opening / closing arm has opened the tray stopper, and FIG. 16 is a view showing the engagement and separation of the hook and the tray (a plan view and a view of the vicinity of the hook viewed from the side). FIG. 17 is a view showing a drive system of the disk transport / play unit, and FIG.
It is the top view and the figure seen from the right side and the left side. FIG.
(A) is a diagram in which a mechanism for elevating and lowering the disk playing unit is extracted, in which the intermediate chassis is lowered,
Further, both side views of the slider L and the slider R are shown.
FIG. 19 is a view in which a mechanism for elevating and lowering the disk playing unit is extracted, in a state where the intermediate chassis is raised, and side views of the slider L and the slider R are both shown. FIG. 20 is a side view and a plan view showing gear b of gear A,
It is a figure which shows the connection relationship of gear c, gear d, and gear B, gear C, and gear D, respectively, and also shows the rotation restricting circle of gear A and the rotation stopper of gear B, gear C, and gear D. Shows the relationship. FIG. 21 is a view showing a state in which the disk playing unit is lowered in the chassis in relation to the clamper (a tray is not shown). FIG. 22 is a view in which the disk playing unit is raised in the chassis and the disk 1 is placed on the turntable. FIG. 23 is a view showing the held state, and FIG. 23 is a view showing a drive unit for moving the disk transport / performance unit up and down. FIG. 24 is a diagram illustrating a path of the driving force for driving the hook, and illustrates a state where the driving force does not pass through the gear D. FIG. 25 is a diagram illustrating a path of a driving force for driving the hook, and illustrates a state where the driving force passes through a gear D. FIG. 26 is a diagram showing the relationship between the hook and the tray and the positioning portion, and also shows the relationship between the hook and the tray during the transfer of the tray, the convex pin, and the guide shaft. FIG. 27 is a view of the disc transport / play unit viewed from below, in which the electric board is removed, and the electric wire of the disc play unit is removed from the connector on the electric board.
FIG. 3 is a view of the disk transport / performance unit viewed from below.

First, the mechanism configuration of the apparatus will be described. Figure 1
8, the loading tray 2 carries the disc 1 into or out of the apparatus (2 in FIG. 2).
(Indicated by a dotted chain line). As shown in FIGS. 2 and 8, the inside of the loading tray 2 is hollow, and an inner tray 3 on which the disc 1 is placed is held inside the loading tray 2 so as to be able to be pulled out in the direction of arrow F. As shown in FIG. 6, the inner tray 3 has a notch-shaped hook engaging portion 10 at a part thereof. The loading motor 4 shown in FIG. 8 is a drive source for moving the loading tray 2 between inside and outside of the apparatus, and its driving force is transmitted via gears 15, 16 and 17 to the rack gear 2 A of the loading tray 2.
Is transmitted to

[0010] Disk storage unit (hereinafter referred to as stocker)
100 (see FIG. 8) is capable of storing 50 disks 1 in the apparatus, and a tray 101 for storing the disks 1 individually.
Opposing shelf-shaped members 103 and 104 for accommodating 50 trays 101 so that they can be inserted and removed, and tray 10
1 comprises a tray stopper 105 (see FIG. 14) for holding it in the stocker 100. The inner tray 3 on which the disc is placed and the tray 101
In order to place a plurality of sheets, substantially circular concave portions (hereinafter, referred to as disc mounting surfaces) 6 and 106 (FIG. 5) are provided at substantially the center, and are formed by a thin rectangular resin member having a substantially square planar shape. (See FIG. 14). The disk mounting surfaces 6 and 1
6, circular notches 7 and 107 larger than the diameter of the turntable 204 (see FIG. 12) are formed, and the notches 7 and 107 are indicated by arrows F shown in FIG.
It is open to the direction. The tray stopper 105 has a hook shape, and its rotation shaft 108 is rotatably fixed to the shelf member 104 (FIG. 4). And one tray stopper 10
5, five trays 101 are held together. 50
In order to hold one tray 101, a total of ten tray stoppers 105 are provided. Similarly to the tray stopper 105, the loading tray 2 is also provided with an inner tray stopper 8 for holding the inner tray 3, and the inner tray stopper 8 is also hook-shaped, and its rotating shaft 9 is rotatable with respect to the loading tray 2. It is fixed (FIG. 7).

The disk transport / performance unit 200 (FIG. 9)
And FIG. 10) are disposed behind the disk storage unit (stocker) 100 as shown in FIG. 1, move up and down, and are stored in the disk 1 on the loading tray 2 and the disk 1 stored in the stocker 100. Access for performance or import / export. A disk playing unit 202 is provided substantially at the center of the chassis 201 of the unit 200.
It is equipped with. The disk playing unit 202 includes an optical pickup 203 that reads a signal from the disk 1 while moving in the radial direction of the disk 1, a turntable 204 that holds and rotates the disk 1, and a turntable 204.
(FIG. 12). Slide guides 206 and 207 that support the chassis 201 movably in the directions of arrows A and B in FIG. 2 are provided on the chassis 201 as shown in FIGS. 4 and 9. The slide guides 206 and 207 are made of polyacetal resin having good slidability, and are movably fitted to guide shafts 208 and 209 shown in FIG. On the chassis 201, there are provided a clamper 210 for holding the disk 1 on the turntable 204, a tray transfer mechanism to be described later, and an elevating mechanism (to be described later) for the disk playing unit 202 (FIG. 2). Clamper 2
Numeral 10 is rotatably held on the clamper support plate 211 with an interval above the turntable 204 (FIG. 1).
2). The lifting motor 212 shown in FIGS. 2, 3, 4, 5, and 23 is a drive source for moving the disk transport / play unit 200 in the directions of arrows A and B in FIG. The driving force is transmitted from the pulley 213 to the pulley 215 by the timing belt 214. Since the pulley 215 and the worm 216 are fixed to the respective ends of the transmission shaft 217 by press fitting, the driving force is transmitted to the gear 218 screwed to the worm 216. Further, the gear 218 supported by the chassis 228 and the chassis 229
The gear 305 supported by the shaft is a synchronous shaft 220 (see FIG. 23).
And the pulley gears 219 and 221 supported by the chassis 228 and 229, respectively, are integrally formed with a gear and a pulley, and mesh with the gears 218 and 305, respectively. The pulley gears 219 and 221
Is connected to pulleys 224 and 225 by timing belts 222 and 223. Slide guides 206 and 207 fixed on the disk transport / play unit 200 are fixed to the timing belts 222 and 223. Pulleys 224 and 225 are respectively provided with brackets 226 as shown in FIGS.
The brackets 226 and 227 are rotatably supported on shafts 230 and 231 erected on the chassis 228 and 229, respectively. Timing belts 222 and 2
Brackets 226 and 2
The other ends of the springs 232 and 233 are attached to the other end of the chassis 2.
28 and 229.

The operation of the disk playing device of the present embodiment configured as described above will be described below.
First, the operation of loading the disk 1 into the apparatus and storing the disk 1 in the stocker 100 will be described. As shown by a two-dot chain line in FIG. 2, the loading tray 2
Is protruded out of the apparatus by the driving force. At this time, since the inner tray 3 is held by the loading tray 2, the inner tray 3 projects out of the apparatus together with the loading tray 2.
The disk 1 is mounted on the disk mounting surface 6 of the inner tray 3 held in the loading tray 2 protruding outside the apparatus (FIG. 1). In response to the loading tray closing command, the loading tray 2 is moved to the loading motor 4.
(FIG. 2). When the storing operation is completed, the inner tray stopper 8 is opened by a tray transfer mechanism described later (FIG. 8). Thereafter, a tray transfer mechanism (described later) mounted on the disk transport / play unit moves the inner tray 3 on which the disk 1 is mounted onto the disk play unit 202. When the inner tray 3 is pulled out to that position, the disc playing unit 202 moves 8.7 mm in the direction of arrow B in FIG. 2 by an elevating mechanism (described later) (see FIG. 22). That is, the disk 1 mounted on the disk mounting surface 6 is
Since the disc 1 is placed on the top and rises above the disc loading surface 6 of the tray 101, the disc 1
04 and the clamper 210. After the discs 1 are held by them and leave the disc mounting surface 6, the inner tray 3 is returned to the loading tray 2 again by the tray transfer mechanism (described later). After the inner tray 3 is completely stored in the loading tray 2, the disc carrying / playing unit 200 is controlled by the driving force of the elevating motor 212 while holding the disc 1.
It moves to a position corresponding to the designated tray 101 among the 50 trays 101 stored in the inside. The tray 101 is empty, and the disc 101 is not stored. Then, the tray stopper 105 is opened by a tray transfer mechanism (described later), and the designated tray 101 is pulled out onto the disc playing unit 202 (see FIG. 3). Then, the disc playing unit 202 is moved 8.7 mm in the direction of arrow A by an elevating mechanism (described later) (see FIG. 21), and the turntable 204 is lowered below the disc mounting surface 6 of the tray 101. Is mounted on the disk mounting surface 106. The tray 101 on which the disk 1 is placed is stored at the original position in the stocker 100 by a tray transfer mechanism (described later). Thereafter, the disk transport / play unit 200 moves down to a position where the inner tray 3 in the loading tray 2 can be pulled out onto the disk play unit 202 (hereinafter, referred to as a home position). Through this series of operations, a maximum of 50 disks 1 are loaded from the loading tray 2 and stored in the stocker 100.

Next, the operation when the disk 1 in the stocker 100 is carried out of the apparatus will be described.
Is simply performed in the opposite direction to the operation of storing the. In the stocker 100, and a detailed description thereof will be omitted.

Next, the operation of playing the disk 1 stored in the stocker 100 will be described. Stocker 10
When a desired disc 1 is selected and selected from among the 50 discs 1 stored in the disk drive 0, the disc transport / play unit 200 is driven by the driving force of the elevating motor 212.
The tray 101 containing the desired disc 1 is moved from the home position to a position where the tray 101 can be pulled out (FIG. 3). When the operation is completed, a tray transfer mechanism (described later) opens the tray stopper 105 (FIG. 4), and moves the tray 101 on which the desired disk 1 is placed onto the disk playing unit 202. And a lifting mechanism (described later)
As a result, the disk playing unit 202 moves 8.7 mm in the direction of arrow B in FIG. 3, and the desired disk 1 is held between the turntable 204 and the clamper 210. When the spindle motor 205 (FIG. 12) rotates in this state, the turntable 204 also rotates at the same time, so that the desired disc 1 rotates, and the optical pickup 203 reads out the signal of the disc 1 to perform the performance (FIG. 12). When the performance is completed, the disc 1 is stored in the original position in the stocker 100 by a process reverse to that at the start of the performance. Disc 1
Is completely stored in the stocker 100, the disk transport / performance unit 200 moves down to the home position.
However, apart from the disk 1 that was playing, the stocker 10
If there is a command to play the disk 1 stored in the disk 0, the disk transport / performance unit 200
Does not move to the home position, but moves to a position where the tray 101 on which the disk 1 to be played next is mounted can be pulled out, and the tray 10 on which the disk 1 is mounted similarly.
1 is pulled out, and the performance of the disc 1 is started. Thus, the desired performance of the disks 1 stored in the stocker 100 is performed, and the continuous performance of the 50 disks 1 stored can be performed.

The mechanism and operation of the disk transport / performance unit 200 will be described. 9 and 10 show the appearance (plan view and side view) of the disk transport / play unit 200. FIG. FIG. 12 is a plan view of the disk playing unit 202 and a cross-sectional view near the turntable 204 and the clamper 210.
FIG. 13 shows a plan view of the chassis 201 alone and side views from four directions.

The disk carrying / playing unit 200 has a chassis 201 of the unit, a disk playing unit 202 mounted substantially at the center, and chassis 201 provided on the left and right sides of the chassis 201, respectively, in the directions of arrows A and B in FIG. Slide guides 206 and 207 movably supported (see FIG. 7), and a disk playing unit 202
It has a clamper 210 (FIG. 12) for holding the disk 1 placed on the turntable 204 (FIG. 12), a tray transport mechanism described later, and an elevating mechanism for the disk playing unit 202 (FIG. 18 described later). As shown in FIG.
Reference numeral 01 denotes a resin molded product having an opening 289 in the center where the disc playing unit 202 is installed. The disc playing unit 202 includes an optical pickup 203 for reading a signal on the disc 1 while moving in the radial direction of the disc 1, a turntable 204 for holding and rotating the disc 1, and a spindle motor 205 for driving the turntable 204 (FIG. 12).
b). The clamper 210 is held on the clamper support plate 211 with an interval above the turntable 204. The clamper support plate 211 includes slide guides 206, 2
07 to the chassis 201 (FIG. 7). As will be described later, when the disc playing unit 202 and its turntable 204 are raised by 8.7 mm, the clamper 210 is magnetically attracted to the turntable 204 and the disc 1 on the turntable 204 is turned to the turntable 2.
04. The slide guides 206 and 207 fixed to the chassis 201 are made of polyacetal resin having good slidability, and have a guide shaft 208 shown in FIG.
And 209 are movably fitted in the directions of arrows A and B, respectively (FIG. 7).

The tray transfer mechanism for pulling out the tray 101 from the stocker 100 and transferring it to the disk transfer / play unit 200 has the following configuration (FIGS. 4, 9, and 1).
0, FIG. 11, FIG. 14, FIG. 16, FIG. 17). Tray 1
01 is a notch-shaped hook engaging portion 10
2 (see FIGS. 4, 14, and 16). A hook-shaped hook 234 engaged with the hook engaging portion 102; and a hook-supporting slider 235 made of polyacetal resin having good slidability for rotatably supporting the hook 234 via a hook rotation support shaft 271. Hook support slider 23
5 has a hole of 3 mm fitted to the guide shaft 236 in addition to the hook rotation support shaft 271 and a guide groove 237 of the chassis 201.
An end portion 238 that fits into the belt and a clamp portion 240 that holds the timing belt 239 are formed (FIG. 11). FIG. 11 is an exploded view of the vicinity of the hook support slider 235 viewed from the front and the side. Further, the hook support slider 2
A guide groove 237 provided in the chassis 201 for restricting the rotation of the hook support slider 235 about the guide shaft 236, and a guide shaft 236 having an outer diameter of 3 mm, which guides the hook 35 in the directions of arrows E and F shown in FIG. (See FIGS. 11 and 13), the timing belt 239 connected to the hook support slider 235 for driving, the timing belt 2
Pulley 241 (number of teeth 1)
6), a shaft 242 (FIG. 4) vertically mounted on the chassis 201 for rotatably supporting the first pulley 241, and a second pulley 243 (13 teeth) for movably supporting the timing belt 239. A shaft 2 installed on the chassis 201 in a vertical direction for rotatably supporting the second pulley 243.
44 (FIG. 16), a gear 245 (16 teeth) formed coaxially with the first pulley (FIG. 17), a drive system connected to the gear 245 (FIG. 17 described later), a second pulley support shaft The 244 is provided with a guide shaft support hole 246 (see FIGS. 11 and 10) perpendicular to the axial direction above the pulley support portion, and one end of the guide shaft 236 is fitted therein (FIG. 10).
The other end of the guide shaft 236 is supported by a guide shaft support member 247 at a position substantially above the first pulley 241 (FIG. 10).

The tray moving operation will be described. First, the operation of engaging and separating the hook 234 and the tray 101 will be described with reference to FIG. The hook 234 is connected to the guide shaft 236.
When moving in the direction of the stocker 100 (the direction of arrow E) along the
Touch 48. When the hook 234 further moves in the direction of the stocker 100 (the direction of the arrow E) while being in contact with the projection 248, the hook 234 rotates on the hook support slider 235 as indicated by the arrow 277. The hook support slider 235 moves while the hook 234 rotates, so that the hook 234 engages with and separates from the tray 101. The initial position of the operation is the position where the hook 234 is closest to the stocker 100 side (the position of the hook 234 indicated by the arrow 278).
In this position, the hook 234 rotates while contacting the projection 248 and is separated from the tray 101. Since the disc transport / play unit 200 is separated from the tray 101 at this initial position, the disc transport / performance unit 200 can smoothly move in the directions of arrows A and B (the direction is shown in FIG. 2) with respect to the stocker 100. When the hook 234 moves from the initial position in the direction of the disk transport / playing unit 200 (direction of arrow E), the hook 234 moves clockwise (in the direction opposite to arrow 277) on the paper surface.
To rotate. The hook 234 is connected to the hook support slider 23.
5 is urged clockwise by a spring 272. As it rotates, the tip of the hook 234 enters the hook engaging portion 102 of the tray 101 and engages with the tray 101. The engaged tray 101 is pulled out onto the disk transport / performance unit 200 according to the movement of the hook 234. At this time, the hook 234 is moved by the arrow 279 in FIG.
This is the position indicated by. Conversely, the tray 101 is moved to the stocker 100
When returning to the tray 100, the tip of the hook 234 pushes a part of the hook engaging portion 102 of the tray 101 by moving the hook 234 toward the stocker 100, and the tray 1 is moved to the stocker 100.
Returns 01. The hook 23 is attached to the protrusion 248 of the chassis 201.
The hook 234 moves while rotating as indicated by an arrow 277 from the position where the hook 4 contacts. The tray 101 is pushed off along the movement locus of the tip of the hook 234, and the hook 234 is separated from the tray 101. The position where the tray 101 is pushed out is the position where the tray 101 is stored in the stocker 100.

The opening and closing of the tray stopper 105 for holding the tray 101 in the stocker 100 is performed by the operation of the tray stopper opening / closing arm 249 on the disk transport / performance unit 200 (see FIGS. 14 and 17). FIG.
It is the figure which extracted the drive system of the disk conveyance / performance unit 200, and was seen from the top view and the right side and the left side, respectively. As shown in FIG. 14, the tray stopper opening / closing arm 249 has a vertically long shape and has a shaft 28 at its center.
0, the arm support hole 273 of the chassis 201 (FIG. 1)
3), and one end has a protrusion 281 (see FIGS. 9, 10 and 14) that comes into contact with the tray stopper 105 when the tray stopper 105 is opened and closed, and the other end has a groove cam 251 described later. Cam follower 282 fitted to
(FIG. 14). A groove cam 251 is provided on a plane portion of the gear A250 of the drive system of the tray transfer mechanism, and the cam follower 282 of the tray stopper opening / closing arm 249 is fitted. In accordance with the rotation of the gear A250, the tray stopper opening / closing arm 249 rotates about the shaft 280 according to the groove cam 251. The protrusion 281 at the tip of the arm 249 contacts the tray stopper 105, and opens and closes the tray stopper 105. The opening / closing timing is set in accordance with the rotation angle of the gear A250.
Before the start of the movement of No. 1, the tray stopper 105 is opened. When the tray 101 is stored, the operation is reversed, and the gear A2
50 rotates in the opposite direction, and the tray stopper 105 closes after the tray 101 is stored (FIG. 14).

The configuration and operation of the drive system of the tray transfer mechanism will be described. See FIG. 17, FIG. 18, FIG. 19, and FIG. 18 and 19 show a mechanism (elevation mechanism) for elevating and lowering the disk playing unit 202 with respect to the chassis 201, and show a state where the disk playing unit 202 is lowered and a state where it is raised, respectively. Drive motor 25
2, the drawer and storage of the tray 101 (or the drawer and storage of the inner tray 3) in FIG.
The disc 1 is held and opened on the turntable 204 by the vertical movement of 8.7 mm in the directions of the arrows A and B of 02, and the tray stopper 105 is opened and closed. Further, when the tray 101 is pulled out and stored in the stocker 100, the disc 1 is held on the turntable 204 (the disc playing unit 202 moves up by 8.7 mm in the direction of arrow B) and the disc 1 is held. It is configured to be able to operate in each of the states where the disk playing unit 202 does not move (in a state where the disc playing unit 202 is moved down).

17 and 18, the drive motor 252
Is the gear A25 through the reduction gear by the worm gear 283.
Connected to 0. From gear A250 to gear B25
3, the driving force is transmitted in three directions by the gear C254 and the gear D255. The groove cam 251 is provided on the plane portion of the gear A250 as described above, and drives the tray stopper opening / closing arm 249. As shown in FIG. 20, the gear A250 has four types of gears coaxially changing in height, a gear a256, a gear b257, a gear c258, and a gear d259. FIG. 20 shows gears B253 and C25 of gear A250.
FIG. 4 is a diagram illustrating a connection relationship among a gear D255 and a gear b257, a gear c258, and a gear d259, respectively. The gear a256 is a gear connected to the worm gear 283 which is a reduction gear from the drive motor 252 shown in FIG. The gear b257, the gear c258, and the gear d259 are partial gears having teeth only on a part of the circumference. Gear A250
, The gear b257, the gear c258, and the gear d259 sequentially mesh with the gear B253, the gear C254, and the gear D255. The above operation is performed by one rotation of the gear A250.

The operation will be described in order. Stocker 1 shown in FIG.
When playing the disc stored in the disc 00, the disc transport / performance unit 200 moves from the position of the lowermost loading tray 2 (home position) to the position of the tray 101 on which the disc 1 is instructed by the control unit. Rise.
At this time, the tray 101 on which the target disk 1 is placed is held in the stocker 100 by the tray stopper 105 (FIG. 4). At this time, the disk transport / performance unit 20
At 0, the hook 234 is at a position separated from the tray 101 (the position of the hook 234 indicated by an arrow 278 in FIG. 16). When the gear A250 rotates in the direction of the arrow M shown in FIGS. 14 and 17, the tray stopper opening / closing arm 249 is driven and rotated by the groove cam 251 of the gear A250, and opens the tray stopper 105 (FIG. 4) of the stocker 100. FIG.
Is the tray stopper opening / closing arm 249 is the tray stopper 1
It is a figure which shows the state which opened 05. Tray stopper 10
5 holds a plurality of trays 101 (5
Tray is released, but the tray pop-out prevention unit 260 at the end of the tray stopper opening / closing arm 249 is located at the end of the tray 101 not intended at this time, and prevents unnecessary pop-out during subsequent operation of the apparatus. (State of FIG. 15).
Next, the gear b257 of the gear A250 shown in FIG. The gear B253 is the first gear shown in FIG.
The timing belt 2 connected to the gear 245 of the pulley 241 and connected to the hook support slider 235
The tray 39 is driven to transport the tray 101 from the stocker 100 to the turntable 204. This state is shown in FIGS.
It is. At this time, the path of the driving force for driving the hook 234 is indicated by a thick dashed line in FIG. Gear B253
The gear c258 of the gear A250 meshes with the gear C254 about the time before the disengagement of the gear (FIG. 18). 18 and 19 are diagrams in which a mechanism (elevation mechanism) for elevating and lowering the disk playing unit 202 is extracted. In the drawings, an intermediate chassis 265 supports the disk playing unit 202 via a damper (not shown). It is. Gear C25
4 is engaged with the rack 262 of the slider L261, moves the slider L261, and
The intermediate chassis 265 on which the disk playing unit 202 including the No. 3 is mounted is raised. The slider L 261 and the slider R 263 have concave portions 284 at their ends respectively fitted with the protrusions 285 at both ends of the connecting arm 264, and the centers thereof are simultaneously rotated in opposite directions via the connecting arm 264 rotatably supported at the center. Slide. Then the connecting arm 2
64 rotates as indicated by arrow 286. Slider L26
1, the convex pin 267 of the intermediate chassis 265 is fitted in two places and one place in the inclined groove 266 on the side surface of the slider R263. The intermediate chassis 265 has a slider L26
1. When the slider R263 slides, it rises by 8.7 mm along the slope of the inclined groove 266. Figures 3 and 2
When the turntable 204 on the disk playing unit 202 mounted on the intermediate chassis 265 indicated by reference numerals 1 and 22 moves upward in the direction of arrow B above the disk mounting surface 106 of the tray 101, the disk 1 on the tray 101 turns. It is placed on the table 204. In addition, the clamper 210 facing the turntable 204 is magnetically attracted to the turntable 204 and the disk
04 and the clamper 210. FIG. 21 is a view showing a position where the disk playing unit 202 is lowered, and FIG.
The disk 1 is moved upward by 7 mm,
It is a figure showing the state held above. Thereafter, the detection switch 268 shown in FIG.
And the control unit (not shown) drives the drive motor 25
2, and stop gear A250. In this state, the disk playing unit 202 drives the turntable 204 shown in FIG. 12 by its spindle motor 205, the disk 1 rotates, and the signal of the disk 1 is read by the optical pickup 203. After the performance is completed, the drive motor 252 shown in FIG. 17 rotates in the reverse direction, and the gear A250 rotates in the direction of the arrow N, which is opposite to the above. The disc playing unit 202 shown in FIG. 3 moves downward in the direction of arrow A by the operation opposite to the above operation, and the disc 1 moves from the turntable 204 to the tray 101. Then, the gear C2 shown in FIG.
The gear 54 is out of mesh with the gear b257 of the gear A250.
Are engaged with the gear B 253 again, and the hook 23 shown in FIG.
4 is driven. Tray 101 on which disk 1 is placed
After returning to the stocker 100, the gear B253 shown in FIG. 20 is disengaged. Before or after that, the tray stopper opening / closing arm 249 shown in FIG. 14 starts rotating by the groove cam 251 of the gear A 250, and the tray stopper 105 engages with the tray 101. Thereafter, the detection switch 274 is set to the tray stopper opening / closing arm 249 as shown in FIG.
The control unit (not shown) stops the drive motor 252 and the gear A250.

The same applies to the case where the disc 1 on the loading tray 2 is played, and the inner tray 3 on which the disc 1 in the loading tray 2 is placed is pulled out onto the disc playing unit 202 as described above to perform. At this time, the tray stopper opening / closing arm 249 opens and closes the inner tray stopper 8 of the loading tray 2. The operation of loading the disc 1 into the stocker 100 from the loading tray 2 shown in FIG. The above-described playing operation and the turntable 204 shown in FIG.
The same holds until the value is held. Thereafter, the gear A250 continues to rotate in the direction of arrow M shown in FIG.
58 is disengaged. Next, the gear d2 of the gear A250
59 (FIG. 20) meshes with the gear D255. Gear D2
55 always meshes with the gear B253, and the gear B25
3 is a gear for driving the hook 234 (FIG. 16) through the gear 3. Since the gear B 253 is driven via the gear D 255 shown in FIG. 20, the gear B 253 shown in FIG.
Is driven in the direction of the stocker 100 (the direction of arrow E). The path of the driving force for driving the hook 234 at this time is shown by a thick dashed line in FIG. Gear B25
3 is driven by the gear D255, so that the aforementioned gear b25
7 rotates in the opposite direction to the direction of rotation when meshed.
The inner tray 3 is returned into the loading tray 2 while the disk 1 is placed on the turntable 204 by the movement of the hook 234. Thereafter, the gear D255 is disengaged from the gear d259 in accordance with the rotation of the gear A250, and before and after that, the tray stopper opening / closing arm 249 is moved.
(FIG. 17) is driven by the groove cam 251 to close the inner tray stopper 8 (FIG. 6). The tray stopper opening / closing arm 249 operates the detection switch 274 shown in FIG.
The drive motor 252 and the gear A250 stop. FIG.
The disc transport / play unit 200 holding the disc 1 on the turntable 204 moves to the position of the tray 101 of the designated stocker 100 as shown by. The tray 101 at this position is in an empty state where the disk 1 is not mounted. At that position, the gear A250 shown in FIG.
Starts rotating in the direction of arrow N. Accordingly, the tray stopper opening / closing arm 249 is driven to open the tray stopper 105 (FIG. 4) of the stocker 100. FIG. 2
The gear d259 of the gear A250 denoted by 0 meshes with the gear D255, and the hook 234 shown in FIG.
The empty tray 101 is pulled out by being driven in the 04 direction. When the gear D255 in FIG. 20 is disengaged from the gear d259, the gear c258 of the gear A250 is changed to the gear C258.
254 begins to engage. The gear C254 drives the rack 262 shown in FIG. 17 and the slider L26 shown in FIG.
1. The slider R263 slides, and the disk playing unit 202 shown in FIG. Thereafter, the disc 1 is placed in the tray
The tray 101 on which the disk 1 is placed is placed on the stocker 100.

Loading tray 2 from stocker 100
The operation of unloading the disc 1 is similar to the above-described operation. First, the user accesses the stocker 100 to take out the disc 1 and conveys the disc 1 to the loading tray 2. Transfer of the stored disk 1 to the tray 101 at a different position in the stocker 100 can be similarly performed.

The gear B253 and the gear C25 in FIG.
4. The gear D255 is provided with a circular rotation restricting stopper 275 having a different height from the gear for each gear as shown in FIG. 20 so as not to rotate unnecessarily except when meshing with the gear A250. Gear B253, Gear C254, Gear D2
The gear A250 corresponding to the 55 rotation regulating stopper 275
Has a rotation regulating circle 270, and this rotation regulating circle 270 includes a gear B253, a gear C254, and a gear D255.
When each of them rotates, the region where each of the rotation restricting stoppers 275 rotates has an open shape.

The main part of the present invention will be described below. FIG.
The tray 101 on which the disc 1 is placed is transferred from the stocker 100 to the disc playing unit 202, and the disc playing unit 202 is set to 8.7 mm on the chassis 201.
When the disk 1 is lifted and clamped on the turntable 204 (the state shown in FIGS. 3 and 5), the disk 1 can be prevented from being erroneously clamped by accurately positioning the disk 1 with respect to the turntable 204. The hook support slider 235 (FIG. 1) for transferring the tray 101 has a driving system (FIG. 1).
7 and FIG. 24), the movement distance varies due to the accumulation of the component precision variation. For this purpose, a positioning portion 401 is installed on the chassis 201 as a member for determining the position by abutting the tray 101 on which the disk 1 is mounted on the chassis 201 (FIGS. 6, 16 and 26). In FIG. 16, the tray 10
One tip 405 enters. As shown in FIG. 26, when the tray 101 is transported from the stocker 100, the front end portion 405 of the tray 100 fits into the positioning portion 401 on the chassis 201 and collides with it (the state shown by the arrow 279 in FIG. 26). The moving distance of the hook 234 and the hook supporting slider 235 engaging the tray 101 is such that the driving system gear b2 moves further by a small amount after the abutment.
57, the amount of rotation of the gear B 253, etc.
0). This amount is set to an amount sufficient to absorb a moving distance error due to variations in the accuracy of a plurality of components of the drive system. When the hook support slider 235 moves by a small amount after the tray 101 abuts, the hook 234 on the hook support slider 235 is disengaged from the tray 101 as indicated by an arrow 407, in a direction substantially opposite to the tray 101 transfer direction. It rotates to absorb the difference in the moving distance between the tray 101 and the hook support slider 235. In the state shown by arrow 279 in FIG.
The hook 234 is rotated in the direction of the arrow 407 by about 5 °. The tip end 405 of the tray 101 is pressed against the positioning portion 401 by the spring 272 which urges the hook 234 on the hook supporting slider 235 in the direction of engaging the tray 101, so that the tray 101 is positioned without rattling. By accurately positioning the tray 101 on the chassis 201 by the positioning unit 401 without being affected by the variation in the moving distance of the drive system for transporting the tray, the tray 10
1 and the turntable 204 of the disk playing unit 202 on the chassis 201 within the required accuracy. Also, when the disk clamped on the turntable 204 is returned to the tray after playing the disk, since the tray is positioned, there is no mistake in mounting the disk on the tray, and reliability can be improved. Further, since the error of the moving distance of the hook supporting slider due to the accumulation of the component accuracy can be absorbed to some extent, the tolerance of the component accuracy of the drive system of the tray transfer mechanism can be widened.

As shown in FIG. 11 and FIG.
Is rotatably supported by a hook support slider 235, and can be moved to a position where it is engaged with and separated from the tray 101. A spring 272 for urging the hook 101 in the hook engaging direction so as not to be disengaged while the tray 101 is being transported.
35. In order to further improve reliability, a convex pin 406 is provided on the hook 234. As shown in the middle of the tray transfer indicated by an arrow 408 in the center of FIG. 26, even if the hook 234 rotates in the direction of disengagement during the transfer of the tray 101, the hook 235 does not Is brought into contact with the guide shaft 236 guiding the hook support slider 235, and the rotation of the hook 234 is stopped.
01 is not detached from the tray 101 during transfer. Even if resistance occurs in tray transfer due to some kind of load fluctuation such as an impact or an increase in frictional resistance, the hook 234 does not come off the tray 101, which leads to improvement in reliability of the tray transfer operation. Further, the hook 23 is
The use of the stopper 4 prevents the space and members from being provided without providing a dedicated member in the longitudinal direction. In the vicinity of the stocker 100, the hook 234 is connected to the tray 1
The length of the guide shaft 236 is set so that the guide shaft 236 can be moved to a position separated from engagement with the guide shaft 01.

As shown in FIG. 9 and FIG.
Are provided with three convex portions 402, 403, and 404. The disc transport / performance unit 200 was set at three locations so as to be a foot when the disc transport / performance unit 200 was placed upside down so as to surround the disc performance unit 202. These convex portions 402, 403,
Since the 404 is installed, the disk transport / performance unit 2
When handling 00 by removing it from the apparatus, it is easy to put it upside down on the workbench. Thereby, the serviceability at the time of failure can be mainly improved. When the disc playing unit 202 is out of order, when replacing parts, the disc carrying / playing unit 200 removed from the apparatus can be placed on a flat plate in the opposite direction, and the work can be performed. Removal and connection of the connector 409 (FIG. 27) of the wiring of the disk playing unit 202 are facilitated. FIG.
7 is a view of the disc transport / play unit 200 viewed from below, in which the electric board 410 has been removed and the electric wire 411 of the disc play unit 202 has been removed from the connector 409 on the electric board 410. FIG. 28 is a view of the disk transport / performance unit 200 as viewed from below.

As described above, according to the present embodiment, the tray transfer mechanism has a hook-shaped hook that rotates and engages with the hook engaging portion of the tray, and supports the hook to move along the guide shaft. It has a hook support slider, a spring for urging the hook on the hook support slider in the tray engaging direction, and a positioning portion against which the tip of the tray provided on the chassis abuts. Then, the hook support slider moves further, and the hook rotates in the opposite direction to the tray engaging direction to absorb the difference in the amount of movement between the tray and the hook support slider. This makes it possible to set the drive system such that the hook support slider moves after the tray is abutted to an amount equal to or greater than the moving distance error resulting from the accumulation of accuracy variations of the components of the drive system that drives the hook support slider. The tray can be transferred and positioned on the chassis without being affected by the movement distance error. Therefore, the positioning of the disk with respect to the turntable is performed accurately, and there is no erroneous clamping.

Next, the tray transfer mechanism includes a hook-shaped hook that rotates and engages with a hook engaging portion of the tray, a hook supporting slider that supports the hook and moves along the guide shaft, and a hook that hooks the hook. It has a spring that urges in the tray engaging direction on the support slider, and at a position where the hook support slider is close to the stocker side, the hook rotates on the hook support slider and the convex pin of the hook does not hit the guide shaft, In the case where the hook can be located at a position separated from the tray and the hook is located in a range where the tray is transferred, when the hook rotates in a direction opposite to the direction in which the tray is engaged, the hook is not disengaged from the tray. The convex pin of the hook abuts on the guide shaft. As a result, even if resistance occurs in tray transfer due to some kind of shock, load fluctuation, or the like, the hook does not come off the tray, and the operation reliability can be improved. In addition, since the guide shaft that guides the hook support slider is also used as a stop member for preventing the hook from being disengaged, it is not necessary to provide a dedicated stop member extending in the tray transfer direction on the chassis. This is effective in reducing parts.

Next, three convex portions 402, 403, and 404 having the same height as the disk playing unit 202 and the tray transfer mechanism mounted on the chassis are provided on the chassis, and the disk transport / playing unit 200 is mounted on the apparatus. Since the foot is used when the disc playing unit is placed upside down, it is easy to perform repair work when the disc playing unit is out of order. The wiring of the disk playing / playing unit is located below the disk transport / playing unit, and the wiring can be easily removed and connected by reversing the disk transport / playing unit.

[0032]

As described above, in the disk playing apparatus of the present invention, when the tray is transferred from the stocker to the disk playing unit, the tray is accurately positioned with respect to the turntable, thereby preventing erroneous clamping of the disk. . Also, when returning the disk clamped to the turntable to the tray, the tray is accurately positioned and there is no mistake in returning the disk. And a highly reliable mechanism can be realized with a simple mechanism.

Also, in the transfer of the tray from the stocker to the disk playing section, even if there is resistance in the transfer of the tray due to some kind of shock, an increase in frictional resistance, or a change in load, the engagement of the hook for engaging the tray and transferring the tray. Without coming off
Operation reliability can be improved.

Further, since the guide shaft for guiding the hook support slider is also used as a stop member for preventing the hook from being disengaged, a dedicated stop member extending in the tray transfer direction on the chassis can be omitted. This is effective in reducing space and materials.

[0035]

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing an internal layout of a disk playing device according to an embodiment of the present invention.

FIG. 2 is a side view of an internal mechanism of the disk playing device according to the embodiment of the present invention;

FIG. 3 is a side view of an internal mechanism showing a state in which the disk playing apparatus transports the disk.

FIG. 4 is a sectional view taken along the line CC in FIG. 2;

FIG. 5 is a view illustrating a state of drawing the tray in FIG. 2;
Line sectional view

FIG. 6 is a cross-sectional view taken along the line DD in FIG. 2;

FIG. 7 is a sectional view taken along line D-D of FIG. 2 showing the inner tray pulled out.

FIG. 8 is a front view of the mechanical section of the disk playing device in a partial cross section.

FIG. 9 is a plan view of a disk transport / performance unit.

FIG. 10 is a side view of a disk transport / performance unit.

11A is an exploded front view showing the vicinity of a hook support slider, and FIG. 11B is an exploded side view showing the vicinity of a hook support slider.

12A is a plan view of a disk playing unit, and FIG. 12B is a cross-sectional view of a main part of the disk playing unit.

13A is a plan view of a chassis alone, and FIGS. 13B, 13C, 13D, and 13E are side views of outer drawings of the chassis alone.

FIG. 14A is a side view illustrating a positional relationship between a tray, a tray stopper, and a tray stopper opening / closing arm, and FIG.

15A is a side view showing a state in which the tray stopper opening / closing arm opens the tray stopper. FIG. 15B is a plan view of the same. FIG. 15C is a side view of the tray stopper opening / closing arm. Main part sectional view

FIG. 16A is a plan view showing the engagement and separation of the hook and the tray, and FIG. 16B is a side view showing the vicinity of the hook.

17 (a) is a plan view of a drive system extracted from a disk transport / play unit, and FIGS. 17 (b) and (c) are side views from the right and left sides thereof.

18 (a) is a plan view of the mechanism for elevating and lowering the disk playing unit with the intermediate chassis lowered, and FIGS. 18 (b) and (c) are side views thereof.

FIG. 19 (a) is a plan view showing a state where an intermediate chassis of a mechanism for elevating and lowering the disk playing unit is raised, and FIGS. 19 (b) and 19 (c) are side views thereof.

20 (a) is a side view of a gear portion, and (b), (c) and (d) are plan views of main parts of the gear portion.

FIG. 21 is a side view showing a state where the disk playing unit is lowered in the chassis.

FIG. 22 is a side view showing a state in which the disk playing unit is raised in the chassis 201;

FIG. 23 is a perspective view of a drive unit for moving the disk transport / performance unit up and down.

FIG. 24 is a plan view showing a state in which a driving force path for driving a hook does not pass through a gear D;

FIG. 25 is a plan view showing a state in which a driving force for driving the hook passes through a gear D in a path of the driving force.

26A is a plan view showing a relationship between a hook and a tray and a positioning unit and a relationship between a hook and a tray, a convex pin, and a guide shaft during tray transfer in a state where the tray is transferred; FIG. Side view of

FIG. 27 is a bottom view of the disk carrying / playing unit. FIG. 27 is a view showing a state in which the electric board is removed and the electric wire of the disc playing unit is removed from the connector on the electric board.

FIG. 28 is a view from the bottom view of the disk transport / performance unit.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Disk (disk-shaped information recording medium) 2 Loading tray 3 Inner tray 100 Stocker (disk storage part) 101 Tray 102 Hook engaging part 105 Tray stopper 200 Disk transport / performance unit (disk transport means) 201 Chassis 202 Disk playing unit (disk) Playing means) 203 optical pickup 204 turntable 205 spindle motor 210 clamper 234 hook 235 hook support slider 236 guide shaft 239 timing belt 241 first pulley 242 first pulley support shaft 243 second pulley 244 second pulley support shaft 245 gear 246 Guide shaft support hole 247 Guide shaft support member 248 Projection 249 Tray stopper opening / closing arm 250 Gear A 251 Groove cam 252 Drive motor 2 3 Gear B 254 Gear C 255 Gear D 256 Gear a 257 Gear b 258 Gear c 259 Gear d 260 Tray pop-out prevention unit 262 Rack 270 Rotation restriction circle 271 Hook rotation support shaft 272 Spring 275 Rotation restriction stopper 276 Notch 401 Positioning unit 402 Convex 403 Convex 404 Convex 405 Tip 406 Convex pin 407 Arrow 408 Arrow 409 Connector

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) G11B 17/22-17/30

Claims (2)

(57) [Claims] 1. A disk storage section for vertically storing a plurality of substantially flat trays on which a disk, which is a disk-shaped information recording medium, is placed, and a disk playing means including a turntable and an optical pickup. A chassis mounted with the disk playing means, a means for moving the chassis to a position corresponding to an individual tray in the disk storage, and a tray mounted on the chassis, and the tray mounted on the disk storage and the disk playing means. Disc playing device having a tray transfer mechanism for transferring between
The tray transfer mechanism has a notch-shaped hook engaging portion orthogonal to the tray transfer direction in a part of the tray, and a hook shaped hook that rotates and engages with the hook engaging portion. A hook supporting slider that rotatably supports the hook and moves along a guide; and a spring that biases the hook on the hook supporting slider in a tray engaging direction, wherein the hook supporting slider stores the disk. At a position close to the unit side, the hook can rotate on the hook support slider and take a position separated from the tray, and when the hook is located in a range to transfer the tray, By providing a stop member extending in the tray transfer direction on the chassis, the hook rotates in a direction opposite to the direction in which the tray is engaged with the hook. Configured disk playing device as a part of the hook before the engagement of the ray deviates comes into contact with said stop member. 2. The disk playing device according to claim 1, wherein the stop member is a member for guiding a hook supporting slider.