JPH02143942A - Disk player - Google Patents

Abstract

PURPOSE:To reproduce a disk without any trouble, to minimize a moving stroke, and to sufficiently miniaturize the title device by providing a turntable and a pickup under a state in which they can freely move up and down for the lower part of the disk guided to a reproducing position. CONSTITUTION:Under a state in which a turntable 12 and a pickup 11 are moved down, a selected disk D out of plural disks D previously made into a standby state at a standby position P1 is guided to a reproducing position P2 by a feed mechanism 4, after that, the turntable 12 and the pickup 11 are moved up, and while the disk D is rotated by the turntable 12, signals are read from the rear face of the disk D and reproduced by the pickup 11. Further, since the disk D guided to the reproducing position P2 is reproduced under an overlapped state with the peripheral parts of the other disks D at the standby position P1 as it is, the moving stroke of the disk from the standby position P1 to the reproducing position P2 can be minimized, and the device can be miniaturized.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a disc player having a disc changer function that selects and plays any one of a plurality of discs stored therein. It is.

"Prior Art and its Problems" Conventionally, a plurality of compact discs (generally about 6 compact discs (CI)) are stored in a stack in a cartridge, and the cartridge is loaded into a player. A CD player with a disc changer function that is configured to select one of the CDs, pull it out from the cartridge, and play it has been put into practical use.

Such CD players with a disc changer function are capable of continuous playback for long periods of time without having to change CDs each time, so they are increasingly being adopted as CD players for car stereos, which require ease of operation. be.

By the way, conventional CD players with a disc changer function as described above play the selected CD by pulling it out completely to the side of the cartridge, so the width of the player is at least as large as the diameter of the CD. Therefore, it has been impossible to miniaturize the size to the extent that it can be incorporated into a dash board of a vehicle whose width dimension is restricted.

Therefore, this type of car stereo CD player that has been put into practical use up until now is generally installed in the trunk of a vehicle and operated by remote control from a dash board.
In such a case, it cannot be installed in a vehicle without a trunk room, and the trunk must be opened each time a CD is replaced with a cartridge, and of course such a thing cannot be done while driving. It was inconvenient because I couldn't do it.

The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a disc player that has a disc changer function and can be miniaturized to the extent that it can be incorporated into a dash board of a vehicle. .

"Means for Solving the Problem" The present invention stores a plurality of discs stacked one on top of the other and waits in a standby position, and any one of the discs selected from the plurality of discs is In a disc player configured to lead a disc from a standby position to a playback position and play it there, the disc led to the playback position and the other disc waiting at the standby position are separated by their peripheral edges. are arranged so that they overlap each other in a plan view, and a feeding mechanism that moves any one of the discs between the standby position and the playback position by shifting it horizontally and laterally, and a drive mechanism that is directly below the center of the playback position. a turntable that is located at and movable up and down and that supports and rotates the disc guided to the playback position; and a turntable that is located on the side of the turntable that is movable up and down and that moves toward and away from the turntable. It is characterized in that it is provided with a pickup that is slidably disposed on the disc and reads signals from the disc that is guided to the playback position.

"Function" In the disc player of the present invention, with the turntable and the pickup lowered, the feeding mechanism moves a selected one of the plurality of discs waiting in the standby position horizontally [in the madder direction]. After shifting the disc and guiding it to the playback position, the turntable and the disc are raised, and the disc led to the playback position is supported by the turntable and rotated, and the pickup reads the signal from the back side of the disc and plays it back.

Then, the disc guided to the playback position is played with its peripheral edge overlapped in plan view with the peripheral edge of another disc in the standby position, so the movement of the disc from the standby position to the playback position is prevented. The storage space is small,
Miniaturization is achieved.

"Example" Embodiments of the present invention will be described below with reference to the drawings.

First, a first embodiment will be described with reference to FIGS. 1 to 3. FIG. 1 is a plan view showing the overall schematic structure of the CD player of this embodiment, in which reference numeral 1 represents a casing and 2 represents a front panel.

A shaft body 3 whose upper and lower ends are fixed to the casing 1 is provided inside the front panel 2, and a shaft body 3 is provided with a shaft body 3 for guiding a compact disc (hereinafter referred to as a disc) from a standby position P1 to a playback position Pt. Six trays 4 constituting the feeding mechanism are rotatably supported in a horizontal plane.

As shown in FIG. 2, each of the trays 4 is composed of a circular disk storage section 5 on which a disk is placed, and a support section 6 extending to the side of the disk storage section 5. By passing the shaft 3 through the tip of the section 6, these trays 4 are stacked one above the other with a slight gap in the t-th direction, and can each rotate independently around the shaft 3. It is like that.

A wall 7 is provided upright around the disk storage section 5 of the tray 4 to prevent the disks from falling. A notch 8 is formed along the line. The shape of the notch 8 at the center of the disc storage portion 5 is semicircular, and the inner diameter of the notch 8 at that portion is slightly larger than the diameter of the turntable 12, which will be described later. The turntable 12 passes through that part so that it can be raised and lowered.

These trays 4 are normally placed on standby at a standby position near the front panel 2 (position P shown by a solid line in FIG. 2). As a result of the operation, the tray 4 selected from among the trays 4 waiting at the standby position P1 is driven by a drive mechanism (not shown) and rotates counterclockwise in FIG. The disc storage section 5 is shifted to the back along the diagonal line of the casing 1 and reaches the playback position P! It is set to .

FIG. 2 shows a state in which the second tray 4 from the top is set at the playback position P.

The disc guided to the playback position P is shown in FIGS. 1 and 2.
As shown in the figure, the peripheral edges of the disk overlap with other disks waiting at the standby position P in plan view.

That is, from the standby position P to the playback position P, the tray 4
The rotation stroke of the tray 4 is set to be slightly larger than the radius of the disc storage section 5 (which is approximately equal to the radius of the disc), and when the tray 4 is set at the playback position P, the rotation stroke of the tray 4 is set to the playback position P. The central part of the disk storage section 5 does not overlap with other trays 4 at the standby position P in plan view, and the entire notch 8 formed in the disk storage section 5 overlaps with other trays at the standby position P1. 4 is exposed on the side of ζ playback position P.

The peripheral edges of the disk storage portions 5 of the trays 4 set in the standby position P1 are left between the stacked trays 4, and they remain overlapped in plan view.
In this state, the disc set on this tray 4 is rotated and reproduced.

On the other hand, in the inner part of the casing 1, a motor 10 is provided facing upward and is located directly below the center of the disc storage section 5 of the tray 4 set in the playback position P. A pickup 11 is arranged on the side, and the motor IO and the pickup 11 can be raised and lowered together by a lifting mechanism (not shown).

As shown in FIGS. 2 and 3, a turntable 12 on which the disk D is placed is fixed to the rotating shaft of the motor IO, and a clamp for clamping the disk D is attached to the turntable 12. The mechanism is integrated.

The clamping mechanism has four clampers 13 each attached to the top surface of the turntable 12 so as to be slidable in the radial direction of the turntable 12, and the disc D is clamped by sliding the clampers 13 outward in the radial direction to open them. It is composed of Each of the clampers 13 has a fan shape in which a disk is divided into four parts when viewed from above, and has an inclined lower surface so that the thickness thereof increases toward the inside.

When these clampers 13 are slid inward and closed, they touch each other and form a circular shape with a diameter slightly smaller than the diameter of the center hole of the disk D as a whole, as shown in FIG. Clamping mechanism is disk D
It is designed so that it can pass through the center hole of.

When the clampers 13 slide outward after passing through the center hole and open, the upper surface of the turntable 12 and the lower surface of each clamper 13 move the center of the disk D, as shown in FIGS. 3(B) and 3(C). The circumferential edge of the hole is sandwiched, and at the same time, the disc D is pressed against the turntable 12 by the lower surface of the clamper 13, so that the disc D is firmly clamped.

The pickup 11 described above is similar to the pickup in a conventional general CD player, and is set at the playback position P by being guided by two guide rods 15 and driven by a drive mechanism (not shown). The tray 4 slides below the notch 8 formed in the disc storage part 5 of the tray 4 along the notch in the direction toward and away from the turntable 12, that is, in the radial direction of the disc storage part 5, and the tray 4 passes through the notch 8. Signals are read from the back side of the disc D set above.

The operation of the CD player having the above configuration will be explained. First, all the trays 4 are pulled out to the outside of the casing 1, a disk is selected onto the disk storage section 5 of each tray 4, and the trays 4 are kept waiting at a standby position P1 inside the casing 1. At this time, the motor 10 and the pickup 11 have descended to the bottom inside the casing l, and the clamper 13 is in a closed state.

Then, when a select switch (not shown) is operated, only the selected tray 4 is shifted toward the back and set to the playback position P, as described above. Next, when a playback switch (not shown) is operated, the motor lO and the pickup 11 move upward, the closed clamper 13 passes through the notch 8 of the tray 4 and the center hole of the disc, and the turntable 12 is opened. Notch 8
The motor 10 and the pickup 11 stop moving up when the upper surface of the disk passes through the disk and the disk is slightly lifted from the tray 4 by the turntable 12. Subsequently, the crank/NH 13 opens outward to clamp the disc, the motor 10 starts rotating, the disc rotates, and the pickup 11 slides, starting playback.

When the disk has finished producing σ■, or when a stop switch (not shown) is operated, the rotation of the motor 10 is stopped, the clamper 13 is closed and the clamp is released, and the motor 10 and the pickup 11 are lowered to release the disk. is returned onto the tray 4, and the tray 4 moves back to the standby position P1.

If the regeneration order of a plurality of discs is set in advance using the select switch, the above procedure is automatically repeated, and the other trays 4 are sequentially moved to the playback position P, up and down, and continuous playback is performed. It has become.

As explained above, in the above CD player, the peripheral part of the disc set at the playback position P and the standby position P
, so that the peripheral edges of other discs at , overlap in plan view, so that the distance from the standby position P to the playback position P
The movement stroke of the disk to 2 is small, and since the standby position P and the playback position P are lined up diagonally at tO of the casing l, the casing l
The width of the CD player is approximately 1.5 times the diameter of the disc (180 mm), which is sufficient, making it sufficiently compact compared to conventional CD players that require a width of at least twice the diameter of the disc. As a result, this CD player has a disc changer function and can be incorporated into the dash board of a vehicle.

Therefore, this CD player can be installed in a vehicle without a trunk room, and discs can be replaced in the tray 11 from the driver's seat, even while driving, which is extremely convenient. It is.

In the above embodiment, the clamp C1tN is integrated into the turntable 12, but this is not necessarily the case. Instead, a clamp mechanism similar to that of a conventional CD player is placed opposite the turntable 12 and mounted on the casing 1. A turntable 12 is provided in the upper part of the interior so as to be movable up and down.
Alternatively, the clamping mechanism may be lowered at the same time as the disk is raised together with the motor 10 to clamp the disk by sandwiching it from above and below. Furthermore, the number of sheets on the tray 11 is not limited to six, but is arbitrary.

The first embodiment of the present invention has been described above, and next, the second embodiment will be described with reference to FIGS. 4 and 5.

FIG. 4 is a plan view showing the general structure of the CD player of the second embodiment, in which reference numeral 20 indicates a casing and 21 indicates a front panel. Reference numeral C designates a cartridge in which six discs D are housed, and the CD player of the second embodiment has the rear part of the cartridge C protruding outside the casing 20 and the front part of the cartridge C. is inserted into the casing 20 from the front panel 21, and one of the plurality of disks D stored in the cartridge C and waiting is selected and pulled out into the casing 20, guided to the playback position P, and then played there. It is configured to play.

The above cartridge C has a rectangular box shape as a whole and has one corner cut off diagonally. The interior is partitioned into fM levels by temporary partitions 25, and each partition has a slot 26 for inserting and ejecting the disk D across the above-mentioned corner and both sides thereof.
is formed, and by pushing the disc D in the diagonal direction of the cartridge C through the slot 26, the disc D is accommodated in each compartment.

In this cartridge C, leaf springs 27 are attached to slightly inside sides of the insertion/extraction openings 26 in each compartment. These leaf springs 27 prevent the disc D stored in each compartment from falling, and when storing the disc D in the cartridge C, the leaf springs 27
This is for feeding the disk D into the inner part of the cartridge C by the elastic force of the cartridge C.

In addition, a push-out pin 28 for pushing out the disk D stored in each compartment is provided at the inner part of each compartment. When one of these pins 28 is selectively rotated by a drive mechanism (not shown), the disk D stored in that compartment is pushed out against the elastic force of the leaf spring 27, and the disk is This is to expose the front part of D to the outside of the slot 26.

On the other hand, inside the casing 20, there are provided two upper and lower rollers 31 and 32 whose side ends are rotatably supported by the guide wall 30. These rollers 31132 are connected to the casing 2
It extends in a direction substantially along the diagonal line of the casing C at a position close to the loading/unloading port 26 of the cartridge C installed in the cartridge C, and is driven by a drive mechanism (not shown) to move the cartridge C into the casing 2.
They are designed to be able to move up and down together within 0, and are also able to move up and down independently so that they move toward and away from each other, and can rotate in opposite directions at the same time.

These rollers 31 and 32 move the selected disc D from the standby position P, that is, from inside the cartridge C to the playback position P.
When the front part of the selected disc D is pushed out from the cartridge and the cartridge C by the pin 28, the disc D is rotated by sandwiching it from above and below. is pulled out in the diagonal direction of the casing 20, and the playback position P! This is for setting. Note that reference numeral 33 is a pin for positioning the disc D set at the playback position P.

The stroke for moving the disc D from the inside of the cartridge C to the playback position P2 by the rollers 31 and 32 is set to be slightly larger than the radius of the disc D. D
As shown in FIGS. 4 and 5, the center part is completely exposed outside the cartridge C, but the rear part of the disk D remains inside the case song C and is separated from the other disks D in plan view. They are designed to remain overlapped.

The disc D played back at the playback position P is supported by the turntable 12, which will be described later, so that it floats above the partition plate 25 that constitutes the compartment in which the disc D was stored. It is arranged to rotate without touching it.

On the other hand, inside the casing 20, a motor 10 is provided, which is located directly below the center of the disc D pulled out to the playback position P2 and is equipped with a turntable 12 and a clamp mechanism similar to those in the first embodiment. On the side thereof, there is also a pickup I similar to that in the first embodiment.
The motor 10 and the pickup 11 are moved up and down together by a lifting mechanism (not shown). These motor lO1 pickup 11
, turntable 12, and clamp mechanism, the first
The same reference numerals as those in the embodiment are given, and the explanation will be omitted.

The operation of the CD player having the above configuration will be explained. First, each disk D is stored in each compartment in the cartridge C,
The front part of the cartridge C (on the loading/unloading port 25 side) is pushed into the casing 20.

At this time, the rollers 31, 32, the motor 10, and the pickup 11 are lowered to the bottom of the casing 20, and there is a slight gap between the rollers 31, 32.

Then, when a select switch (not shown) is operated, the rollers 31 and 32 rise together, and the position of the gap between the rollers 31 and 32 is set to the section in which the selected disk D is stored. It is set at the height of the loading/unloading port 26.

Next, the push-out pin 28 at the back of the compartment in which the selected disc D is stored rotates to push out the disc D in that compartment against the elastic force of the temporary spring 27, thereby pushing out the disc D. The front part of D is pushed out into the gap between both rollers 31 and 32. Then, the push-out pin 28 immediately returns to its original position.

Then, both rollers 31 and 32 move closer to each other, and the upper roller 31 comes into contact with the upper surface of the disk D, and the lower roller 32 comes into contact with the lower surface of the disk D.
The disk D is sandwiched between these rollers 31 and 32. Next, both rollers 31 and 32 further rise slightly to raise the lower surface of the disk D from the partition plate 25, and then these rollers 31 and 32 rotate to pull out the disk D from the cartridge C in the diagonal direction of the casing 20. When the front portion of the disk D comes into contact with the two positioning pins 33, the rotation of the seven rollers 31 and 32 stops. As a result, the disc D is moved to the playback position P while being supported by the rollers 31 and 32.

is set to

Next, when the regeneration switch is operated, the motor 10 and the pickup 11 move upward as one. Then, when the clamper 13 in the closed state passes through the center hole of the disk D and the upper surface of the turntable 12 comes into contact with the lower surface of the disk D, they rise or stop, and the clamper 13
It opens outward and the disk D is clamped. Then,
Both rollers 31 and 32 move away from each other to release support for the disk, and as the motor 10 begins to rotate, the pickup 11 slides and playback begins.

When the playback of the disc D is finished or when the stop switch is operated, the motor lO stops rotating, and then
Both rollers 31 and 32 sandwich and support the disk D again, the clamper 13 closes and the clamp is released, the motor 10 and pickup 11 descend, and both rollers 31 and
32 rotates to push the disk D into the cartridge C against the elastic force of the temporary spring 27. When the center of the disk D is pushed in until it passes the temporary springs 27, the leaf springs 27 will bias the disk D in the direction of sending it into the inner part of the cartridge C. And both rollers 31, 3
2 move up and down to separate from each other and release the disk D from supporting the disk D. From then on, the elastic force of the temporary springs 27 causes the disk D to automatically move into the cartridge C.
The cartridge is completely stored in the cartridge.

Then, the playback order of the six discs D is set in advance using the select switch (and the above procedure is automatically repeated, and the other discs D are sequentially moved to the playback position P for continuous playback. It looks like this.

Also in the CD player of the second embodiment, since the disc D to be played is not completely pulled out from the cartridge C and is played with the rear part left inside the cartridge C, the standby position P in the cartridge C, The movement stroke from to the playback position P is small, and since the disc D is pulled out from the cartridge C in the diagonal direction of the casing 20, the CD player can be made as compact as the first embodiment. It is possible to realize this and incorporate it into the dash board of the vehicle.

In the second embodiment, as in the first embodiment, a clamper mechanism which is commonly used in the past may be provided separately from the turntable 12, and the disc D stored in the cartridge C may be provided separately from the turntable 12. The number of sheets is also arbitrary.

In addition, the feeding mechanism for guiding the selected disc from the standby position to the playback position may be one that rotates the tray in the first embodiment, or a pair of rollers in the second embodiment that moves the disc from within the cartridge. In addition to the pull-out type, various configurations can be adopted.

Furthermore, the above embodiments are all examples of applications to CD players, and the present invention is not limited to CD players, but can be similarly applied to other disc players of the same type.

"Effects of the Invention" As explained in detail above, the disc player of the present invention guides the selected date to the playback position by shifting it in the horizontal and lateral directions using the feed mechanism, and also guides the selected date to the playback position. The periphery of the disc overlaps the periphery of another disc in the standby position in plan view, and the turntable and pickup are provided below the disc led to the playback position so that they can be raised and lowered, so that the disc can be played without any hindrance. (Not only is it possible to do this, but the stroke of moving the disc from the standby position to the playback position is small, which makes it possible to achieve sufficient miniaturization and has the effect of speeding up disc exchange.
It is particularly suitable for use in a vehicle-mounted CD player where the tffiff method is restricted.

[Brief explanation of the drawing]

1 to 3 show a first embodiment of a disc player according to the present invention, FIG. 1 is a plan view showing its overall schematic configuration, and FIG. 2 is a perspective view showing main parts of its internal mechanism. Figures 3 and 3 are diagrams for explaining the clamp mechanism, of which (a) is a side view showing the state before clamping, (b) is a side view showing the clamped state, and (c) is a side view showing the clamped state. FIG. 3 is a plan view showing a clamped state. FIGS. 4 and 5 show a second embodiment, in which FIG. 4 is a plan view showing its overall schematic configuration, and FIG. 5 is a ♀1 perspective view showing essential parts of its internal mechanism. Fig. 1D...Disk, P...Standby position, P,
...Reproduction position, 1...Casing, 2
...Front panel, 4...Tray (feeding mechanism), 5...Disc storage section, 6...Support part, 8...Notch, 10...Motor, 11
...Pickup, 12...Turntable, 13...Clamper C...Cartridge, 20...Casing, 21...・Front panel, 25...
Partition plate, 26... Input/outlet opening, 27... Leaf spring, 28... Push-out pin, 31.32...
...Roller (feeding mechanism). Figure 2

Claims (1)

[Claims] A plurality of discs are stacked one on top of the other and are stored in a standby position, and a selected one of the discs is guided from the standby position to a playback position and played there. In the disc player configured to do so, the peripheral edges of the disc guided to the playback position and the other disc waiting at the standby position overlap each other in a plan view, and , a feeding mechanism that moves one of the discs between the standby position and the playback position by horizontally shifting it horizontally, and a playback mechanism that is located directly below the center of the playback position and is movable up and down. a turntable that supports and rotates a disk guided to a position; and a turntable that is located on the side of the turntable and is movable up and down and slidable in directions toward and away from the turntable;
A disc player comprising a pickup that reads signals from a disc guided to a playback position.