JPH07107789B2 - Disc player - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (A) Field of Industrial Application The present invention relates to a disc reproducing apparatus, and more specifically, two disc-shaped recording media (hereinafter referred to as discs) which are independently supported in a main body 2 The present invention relates to a disc reproducing device that is provided with individual trays and is configured to reproduce each disc supported by the trays.

(B) Conventional technology In a conventional disk reproducing device of this type,
It is equipped with two sets of playback mechanisms mainly composed of a turntable and a pickup. When playing one disc, one of the two sets of playback mechanisms is selectively operated to play the desired disc. It was general that it was configured to do.

(C) Problems to be Solved by the Invention However, in the above-mentioned disc reproducing apparatus, since two sets of reproducing mechanisms must be provided in the main body, the number of parts used is large, the mechanism is complicated, and the product cost is high. There's a problem.

This invention was made in consideration of such circumstances.
Provided is a low-cost disc reproducing apparatus capable of reproducing two discs respectively with a single reproducing mechanism, and further capable of moving the reproducing mechanism with a simple and reliable mechanism. It is a thing.

(D) Means for Solving the Problems The disc reproducing apparatus of the present invention includes two support plates for positioning two discs and horizontally supporting their peripheral portions, a pair of a pickup and a turntable. A support table on which a turntable is mounted, an elevating means for elevating and lowering the support table, and a moving table on which the support table and the elevating means are horizontally movable below the support plate. A disc reproducing device that moves to the lower side of the disc and then rises to rotatably support the disc, and when the disc is not reproduced, the turntable descends to return the disc to the support plate. A column portion that is erected on a table and rotatably supports one end of the support table, a convex portion that is erected on the rear surface of the other end of the support table, and a convex portion provided on the movable table. That consists cam by the cam is operated, in which the support base is raised and lowered.

Further, the elevating means includes a column portion that is erected on the moving table and slidably supports the supporting table, and a plurality of protrusions that are dispersed and erected on the back surface of the supporting table. The movable base is provided with a plurality of interlocking cams that are in interlocking relation with each other to abut against the plurality of convex portions and keep the support base in a horizontal state. When the interlocking cams operate, the support base is in a horizontal state. It may be moved up and down.

(E) Action According to the present invention, the two discs are horizontally supported by the two support plates, and the elevating means is erected on the moving base and rotatably supports one end of the supporting base. In the case of a strut, a protrusion that stands up on the other end back surface of the support base, and a cam that is provided on the moving base and abuts against the protrusion, the moving base reaches below one of the discs during disc playback. After the movement, the convex part on the back surface of the support table placed on the moving table is pushed up by the operation of the cam, and the support table is rotated around one end supported by the column part and ascends to turn. A table rotatably supports the disc.

When the disc is not reproduced, that is, when the other disc is reproduced, the support base is rotated around one end supported by the column by the operation of the cam and descends, and one disc is supported by the support plate. Return to. Then, the movable table moves to below the other disk.

In addition, the elevating means is provided on the movable table, and a column portion that is erected on the movable table and that slidably supports the supporting table, and a plurality of convex portions that are dispersed and erected on the back surface of the supporting table. In the case of a plurality of interlocking cams that are in interlocking relationship with each other to abut on a plurality of convex portions and keep the support base in a horizontal state, when the disc is played, the moving base moves to the position below one of the discs. A plurality of convex portions on the back surface of the support table placed on the movable table are respectively pushed up by the operation of the plurality of interlocking cams, and the support table slides horizontally on the support column to rise horizontally. Supports the disc so that it can rotate.

Also, when the disc is not being played, that is, when the other disc is being played, one of the discs returns to the support plate by sliding down the support column horizontally by the operation of multiple interlocking cams. To do. Then, the movable table moves to below the other disk.

Therefore, with a simple and reliable structure using the cam, it is possible to reproduce each of the two discs with a pair of reproducing mechanism including the pickup and the turntable.

(F) Examples The present invention will be described in detail below based on the examples shown in the drawings.
This does not limit the invention.

In this embodiment, the one in which the support base is rotated to move up and down will be described as [Embodiment 1] with reference to FIGS. 1 to 7, and the support base slides to move up and down horizontally. Example 2 will be described with reference to FIGS. 8 to 14. Further, the same numbers are given to members common to both Examples.

[Embodiment 1] FIG. 1 is a perspective view showing the appearance of Embodiment 1 of the present invention. In the figure, reference numeral 1 is a main body made of a box, and 2 is a first compact disc X (hereinafter referred to as a first compact disk) provided on the front surface of the main body 1.
The first tray 3 as a support plate for supporting the disk X) and storing it in the main body 1 is arranged in parallel with the tray 2.
Compact disc Y (hereinafter referred to as the second disc Y)
2 is a second tray as a support plate that supports and stores in the main body 1. The arrows V and W indicate the first tray 2
And the storage directions of the second tray 3 are shown. 2 to 5 are plan views for explaining the operation state of the first embodiment, and FIG. 2 is a plan view showing a state in which the movable table is moved to the left when playing the first disc X. 3 is a plan view when the first disc X is in a playing state, FIG. 4 is a plan view showing a state in which the movable table is moved to the right when playing the second disc Y, and FIG. FIG. 6 is a plan view when the disk Y is in a playing state.

FIG. 6 is a side view of FIGS. 2 and 4, and FIG.
The figure is a side view of FIG.

Next, the configuration of the first embodiment will be described with reference to FIGS. 2 and 6.

Reference numeral 5 denotes a guide shaft which is provided in the vicinity of both disks X and Y in parallel with a line connecting the center of the first disk X and the center of the second disk Y and whose both ends are fixed by a chassis (not shown).

Reference numeral 6 denotes a movable base made of a substantially plate-shaped member, and a guide shaft 5 is penetrated at one edge portion thereof, and can slide along the guide shaft 5.

Reference numeral 7 is a motor, 8 is a drum rotated by the motor 7 via a worm gear, and 9 is a pulley 30 wound around the drum 8.
Wires bridged over a and 30b, 10 is a slide plate attached to the moving base 6 to which each end of the wire 9 is connected, and when the drum 8 is rotated by the motor 7, the wire 9 is wound and rewound. Then, the slide plate 10 moves in the left and right directions indicated by arrows B and H in FIG.

The slide plate 10 has fixed pins 19a, 19 fixed to the moving table 6.
It is held by the elongated holes 10a, 10b by b. A lock lever 12 and a lock lever 13 are rotatably attached to the pins 11a and 11b on the moving table 6, and the pins 14 and 15 of the lock levers 12 and 13 are ribs attached to a chassis (not shown). The pins 17 and 18 of the lock levers 12 and 13 are in contact with each other so as to sandwich the inclined portion of the slide plate 10.

Therefore, when the slide plate 10 moves left and right in the drawing of FIG. 2, the moving table 6 moves left and right together with the slide plate 10.

The slide plate 10 can be moved laterally by the length of the elongated holes 10a and 10b even when the movable table 6 comes into contact with the stopper 20a or the stopper 20b and stops. Further, the slide plate 10 is provided with a linear gear 10c. Reference numerals 21a and 21b are limit switches for detecting that the movable table 6 is in contact with the stopper 20a or 20b.

Posts 6a and 6b are erected on the movable table 6, and one end of a support table 25 is rotatably supported by the spindle pins 29a and 29b on the posts 6a and 6b. Further, a convex portion 28 is provided upright on the back surface of the support base 25 on the free end side.

Further, the movable table 6 is rotated about a shaft 22 projecting from the movable table 6 as a fulcrum, an arc-shaped gear 23a engaging with the gear 10c of the slide plate 10 is provided on one side, and an arc gear 23a is engaged on the other side. Contact points 24a, 24b
Fan-shaped cams 23 each having the above are provided, and the above-mentioned supporting columns 6a, 6b, the convex portion 28, and the fan-shaped cam 23 constitute the lifting means.

The support base 25 is normally rotated by its own weight around the support shaft pins 29a and 29b in the directions shown by arrows F in FIG. 6, but when the fan-shaped cam 23 rotates, the fan-shaped cam 23 is rotated. Abutment portion 24a of
Either one of 24b pushes up the convex portion 28, and the support base 25 is
It is lifted up to a position parallel to the movable table 6 in the direction indicated by arrow E in FIG. By such an operation, the support base 25 is
The support pins 29a and 29b are rotated about a horizontal position and an inclined position. In FIG. 6, 27 is a limit switch for detecting whether or not the support base 25 is in the horizontal state.

Then, on the support base 25, there is installed a reproducing mechanism including a turntable 26 rotated by a drive motor 26a and a pickup 26b which moves in a direction indicated by an arrow K and reads information of the first disk X or the second disk Y. When the disk is reproduced, that is, when the support base 25 is lifted by the elevating means, the turntable 26 rotatably supports the first disk X or the second disk Y, and when the disk is not reproduced, that is, the support is performed. When the table 25 is lowered by the lifting means, the turntable 26 is also lowered to return the first disk X or the second disk Y to the tray.

In such a configuration, the operation of the support base 25 in the disk reproduction state will be described below with reference to FIGS.

First, as shown in FIG. 2, the drum 8 is rotated by the motor 7 in the direction indicated by the arrow A, the slide plate 10 and the movable table 6 are moved in the direction indicated by the arrow B in the figure, and the movable table 6 is moved. When is stopped by contacting the stopper 20a, the pin 14 of the lock lever 12 contacting the rib 16 is disengaged from the end of the rib 16, so that the lock lever 12 is rotated in the direction indicated by the arrow C in the figure, and the pin 17 Moves out of the inclined portion of the slide plate 10 and the slide plate 10 further moves in the direction indicated by the arrow B. This movement causes the arc-shaped gear 2 to engage with the gear 10c of the slide plate 10.
3a is rotated, the fan-shaped cam 23 is rotated in the direction indicated by the arrow D, and the state shown in FIG. 3 is obtained.

FIG. 7 is a side view of FIG.
When is rotated, the abutment portion 24a pushes up the convex portion 28 of the support base 25, the support base 25 is rotated about the support shafts 29a and 29b and becomes horizontal, and the limit switch 27 shown in FIG. The horizontal state is detected, the motor 7 is stopped, and the first disc X is in the playing state.

Next, the operation of the support base 25 when the second disk Y is in the playing state will be described.

In order to shift from the playing state of the first disc X shown in FIG. 3 to the playing state of the second disc Y, in FIG. 3, the motor 7 rotates in the opposite direction to the above, and the drum 8 is indicated by an arrow G. When rotated in the direction, the slide plate 10 moves in the direction indicated by the arrow H. Therefore, the lock lever 12 rotates in the direction opposite to the direction indicated by the arrow C, and the pin 17 of the lock lever 12 fits into and abuts on the inclined portion of the slide plate 10, and the pin as shown in FIG. 14 is brought into contact with the rib 16.

In this state, since the inclined portion of the slide plate 10 is sandwiched between the pin 17 and the pin 18 as described above, the movable table 6 also moves in association with the slide plate 10. Since the drum 8 continues to rotate in the direction indicated by the arrow G, the slide plate 10, the moving table 6 and the support table 25 provided on the moving table 6 move in the direction indicated by the arrow H, The state is as shown in FIG.

FIG. 4 shows a state in which the movable table 6 is stopped by the stopper 20b. In this state, the pin 15 of the lock lever 13 is disengaged from the end of the rib 16 contrary to the time of playing the first disk X described above. Therefore, the lock lever 13 is the fourth
When the pin 18 is rotated in the direction indicated by the arrow I in the figure and the pin 18 is disengaged from the inclined portion of the slide plate 10, the slide plate 10 is further moved to the arrow H.
Move in the direction indicated by. Due to this movement, the fan-shaped cam 23 rotates in the direction indicated by the arrow J, and the state shown in FIG. 5 is obtained.

When the fan-shaped cam 23 rotates in this manner, the contact portion 24b
Then, the convex portion 28 of the support base 25 is pushed up to bring the support base 25 into a horizontal state, the limit switch 27 shown in FIG. 7 detects the horizontal state, the motor 7 is stopped, and the second disk Y is brought into a playing state. .

In this way, if the support base supported by the supporting column is pushed up by using the elevating means mainly composed of the fan-shaped cam, the reproducing mechanism is raised and lowered by a simple and reliable mechanism, whereby the two sheets are moved. Each disc can be played by a set of playback mechanisms.

[Second Embodiment] In the second embodiment, the basic configuration is the same as that of the first embodiment described above, but a big difference is that the support base 25 is used.
Is that it is configured to move up and down horizontally.

First, the external appearance of Embodiment 2 of the present invention is the same as that shown in FIG. 1, and FIG. 8 is an exploded perspective view of essential parts, and FIGS.
The drawing is a plan view for explaining the operation state of the second embodiment,
FIG. 9 is a view corresponding to FIG. 2, FIG. 10 is a view corresponding to FIG. 3, FIG. 11 is a view corresponding to FIG. 4, and FIG. 12 is a view corresponding to FIG.

13 is a side view of FIGS. 9 and 11, and FIG.
The figure is a side view of FIG.

Next, the configuration of the second embodiment will be described with reference to FIG.

In the figure, a column 32a and a column 32b are erected on the movable table 6, and the support 25 is penetrated by the columns 32a and 32b, respectively, and slides along the columns 32a and 32b. Penetrating portions 34a, 34b are provided.

Then, on the back surface of the support base 25, a convex portion 28 similar to that of the first embodiment is erected on one side with respect to the line connecting the through portion 34a and the through portion 34b, and on the other side, the second embodiment is provided. Peculiar second convex part 33
a and 33b are erected. The shape of the fan-shaped cam 23 is the same as that of the first embodiment, but the second convex portion 33 is provided on the slide plate 10.
There is provided a linear cam including an inclined portion 31a and an inclined portion 36a that abut a, and an inclined portion 31b and an inclined portion 36b that abut the second convex portion 33b. Note that the other configurations are similar to those of the first embodiment.

The operation of the support base 25 in the disc reproducing state of the second embodiment will be described with reference to FIGS. Since the basic operation is the same as that of the first embodiment, only the part related to the lifting operation of the support base 25 will be described.

First, in FIGS. 9 and 13, the movable table 6 comes into contact with the stopper 20a and stops, and the slide plate 10 is further moved by the arrow B.
When the fan-shaped cam 23 moves in the direction indicated by, the fan-shaped cam 23 rotates in the direction indicated by arrow D. At this time, the contact portion 24a pushes up the convex portion 28, and the inclined portion 31a and the inclined portion 31b of the slide plate 10 push up the second convex portion 33a and the second convex portion 33b, respectively. It slides on the portions 32a and 32b and rises horizontally in the direction indicated by the arrow L in FIG. 13 to reach the state shown in FIG.

FIG. 14 is a side view of FIG. 10, and when the support table 25 is lifted in this way, the first disk X is brought into a playing state.

Next, when the motor 7 rotates in the reverse direction and the slide plate 10 moves in the direction shown by the arrow H in FIG. 10, the support base 25 descends, and the state shown in FIG. 9 is obtained. Then, together with the slide plate 10, the moving table 6 and the supporting table 25 move in the direction shown by the arrow H, and the state shown in FIG. 11 is obtained.

FIG. 11 shows a state in which the movable table 6 comes into contact with the stopper 20b and is stopped. From this state, the slide plate 10 is further indicated by the arrow H.
When the fan-shaped cam 23 moves in the direction indicated by, the fan-shaped cam 23 rotates in the direction indicated by arrow J. At this time, this time the contact portion 24b pushes up the convex portion 28, and at the same time, the slanted portion 36a and the slanted portion 3 of the slide plate 10 are pushed.
6b pushes up the 2nd convex part 33a and the 2nd convex part 33b, respectively, and by this, the support stand 25 slides to the support | pillar parts 32a, 32b, and the 1st.
Ascends horizontally in the direction indicated by arrow L in FIG. 3 to the state shown in FIG.

Since FIG. 12 is symmetrical with the state shown in FIG. 10 in the left and right directions in the figure, the raised position of the support base 25 is the same as that shown in FIG. 14, and the support base 25 should be raised in this way. As a result, the second disk Y is in the playing state.

In this way, if the support base supported by the supporting column is slid on the supporting column and pushed up horizontally by using the elevating means mainly composed of the interlocking cam composed of the linear cam and the fan-shaped cam, the turn Since the disc can be supported by vertically advancing the table vertically to each disc, the disc can be supported without difficulty, and the playback mechanism can be moved up and down with a simple and reliable mechanism. Each of the discs can be played back by a set of playback mechanisms.

(G) Effect of the Invention According to the present invention, there is provided a low-cost disc reproducing apparatus capable of reproducing two discs respectively with a pair of reproducing mechanism including a pickup and a turntable, and moreover, a supporting base. The supporting base on which the pickup and the turntable are mounted is moved up and down by an elevating means composed of a supporting column that rotatably supports one end, a convex portion provided on the supporting base, and a cam that abuts on the convex portion. Therefore, the playback mechanism can be moved up and down with a simple and reliable mechanism.

In addition, a pillar portion that slidably supports the elevating means through the support base, and first and second convex portions provided on the support base and the first convex portion thereof.
And the second interlocking cams that come into contact with the second convex portion and the second convex portion, respectively, and by raising and lowering the support base horizontally by the raising and lowering means, the turntable is straightened from the vertical direction with respect to each disc. Since it is possible to support the disk in close proximity to the disk, it is possible to support the disk without difficulty, and it is possible to raise and lower the reproducing mechanism with a mechanism more reliable than the above.

[Brief description of drawings]

FIG. 1 is an external perspective view of Embodiments 1 and 2 of the present invention. 2 to 7 show Embodiment 1 of the present invention, FIGS. 2 to 5 are plan views for explaining the operation, FIG. 6 is a side view of FIGS. 2 and 4, and FIG. 7 is of FIG. It is a side view. 8 to 14 show Embodiment 2 of the present invention, FIG. 8 is an exploded perspective view of essential parts, FIGS. 9 to 12 are plan views for explaining the operation, FIG. 13 is a side view of FIG. 9 and FIG. FIG. 14 is a side view of FIG. 1 ... Main body, 2,3 ... Tray (support plate), 6 ... Movement stand, 6a, 6b ... Stand part, 10 ... Slide plate, 23 ... Fan-shaped cam, 24a, 24b ... Abutment Part, 25 ... support base, 26 ... turntable, 26a ... drive motor, 26b ... pickup, 28 ... convex part, 31a, 31b, 36a, 36b ... inclined part, 32a, 32b
...... Posts, 33a, 33b ...... 2nd convex part, 34a, 34b ...... Penetration part.

Claims (2)

[Claims] 1. A pair of support plates for positioning two disks respectively and horizontally supporting their peripheral portions, a support table on which a pair of pickups and a turntable are mounted, and a lifting table for raising and lowering the support table. Means, and a moving table for mounting the supporting table and the elevating means so as to be horizontally movable below the supporting plate,
When playing a disc, the turntable moves to the bottom of any disc and then rises to rotatably support the disc. When the disc is not played, the turntable descends to return the disc to the support plate. There, the elevating means comprises a column portion that is erected on the movable table and rotatably supports one end of the support table, a convex portion that is erected on the rear surface of the other end of the support table, and the movable table. A disc reproducing apparatus, comprising a cam that is provided and is in contact with the convex portion, and that the support base is moved up and down by operating the cam. 2. A pair of support plates for positioning the two discs and horizontally supporting the peripheral portions of the two discs, a support stand on which a pair of pickups and a turntable are mounted, and an elevating and lowering stage for raising and lowering the support stand. Means, and a moving table for mounting the supporting table and the elevating means so as to be horizontally movable below the supporting plate,
When playing a disc, the turntable moves to the bottom of any disc and then rises to rotatably support the disc. When the disc is not played, the turntable descends to return the disc to the support plate. There, the elevating means, a column portion that is erected on the moving table and slidably supports the penetrating support, and a plurality of convex portions that are erected on the back surface of the supporting table in a distributed manner. The movable table is provided with a plurality of interlocking cams that are in interlocking relation with each other to abut against the plurality of convex portions and keep the support table in a horizontal state. When the interlocking cams operate, the support table moves horizontally. A disk reproducing device which is raised and lowered in a state.