JP2534896Y2 - Loading device for multi-disc player - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The invention relates to a multi-disc player which can select and play any one of a plurality of stored discs continuously or in a program order, and in particular, during a performance. The present invention also relates to a loading device for a multi-disc player capable of replacing a stored disc.

2. Description of the Related Art Conventionally, there has been a multi-disc player in which a rotating disk-shaped disc tray is provided on a slide table to facilitate disc exchange.

 FIGS. 7 and 8 show a conventional example.

A disc tray 3 having recesses 3a, 3a,... For mounting discs is rotatably supported on a slide table 2,
It is rotationally driven by a driving device 15 provided on the slide table 2.

The slide table 2 is slidably supported by the chassis 1 and has a position shown in FIG. 7 where a disk is placed just above the turntable 4 of the disk reproducing unit 6 and a concave portion of the disk tray 3 in front of the front panel. The motor 12 is driven between the exposed positions where the disc can be replaced.

That is, the worm 13 rotationally driven by the motor 12 via the belt transmission meshes with the helical gear formed on the gear 14, and the spur gear formed on the gear 14 is formed on the back surface of the slide table 2. The slide table 2 is moved by the rotation of the rack 2a and the meshing gear 14.

When the slide table 2 is at the position shown in FIG.
The disc reproducing unit 6 is raised, and the turntable 4 provided on the disc reproducing unit 6 is moved to the disc tray 3.
The upper disk is lifted and clamped to rotate the disk, and the optical pickup 5 moves to reproduce the disk.

 FIG. 8 shows a drive device of the disk reproducing unit 6.

The disk reproducing unit 6 including the turntable 4 and the optical pickup 5 is rotatably supported by the chassis via shafts 6a, 6a provided on both rear side surfaces.

Pins 6b and 6 erected on the front of the disc playback unit 6
b is inserted through the cam grooves 11a, 11a of the slider 11 slidably supported by the chassis.

The rack 11b formed on the slider 11 meshes with the gear 10, and the gear 10 further meshes with the small gear of the gear 9. The helical gear of the gear 9 meshes with the worm 8 fixed to the rotating shaft of the motor 7.

The gears 9 and 10 and the motor 7 are supported by a chassis.

The rotation of the motor 7 moves the slider 11 left and right, rotates the disk reproducing unit around the shafts 6a, 6a, and moves the turntable 4 up and down. As the turntable 4 moves up and down, the disc on the disc tray 3 is clamped or unclamped.

[Problems to be Solved by the Invention] In the above-described conventional device, the drive of the disk reproducing unit and the drive of the slide table are performed by different drive devices, so that their operations cannot be properly synchronized. The device and the disk may be damaged.

In addition, there has been a problem that the control circuit and the device become complicated and cost increases.

The present invention has been made in view of the above points, and has as its object to drive the disk playback unit and the slide table by the same driving device to synchronize the operation of the disk playback unit and the slide table. It is an object of the present invention to provide a loading device for a multi-disc player having a simple mechanism without having to take any steps.

[Means for Solving the Problems] The loading device of the multi-disc player of the present invention rotatably supports a disc tray on which a plurality of discs are placed in respective recesses on a slide table, and mounts the disc tray on the slide table. A drive device for rotating the disc at a predetermined position is provided, and a disc reproducing unit having a slide table disposed in a housing is provided with a loading position where the disc is placed at a position where the disc can be clamped and one or more of the recesses protruding from the front panel. The disc playing unit is driven between the unloading position, and the disc reproducing unit is lifted to lift and clamp the disc on the disc tray when the slide table is in the loading position, and to lower the disc. To remove the clamped disc. In a multi-disc player driven to be mounted on a disc tray, a notch is formed from the concave portion of the disc tray to the outer periphery of the disc tray so as to be inserted into the disc reproducing unit, and the disc reproducing unit is inserted. In order to drive the slide table and the disc reproducing unit by a common drive device, a unidirectional rotation of a motor for driving the common drive device is provided. By moving the slide table from the unloading position to the loading position, and then raising the disc playback unit, and then moving the slide table from the loading position to the unloading position, the motor rotates the slide table in the other direction. Unload Is moved to the loading position from the ring position,
Next, the disc reproducing unit is lowered, and then the slide table is moved from the loading position to the unloading position.

[Operation] According to the multi-disc player of the present invention, the disk drive unit and the slide table are driven by the same drive device, so that their operations are not synchronized and there is no danger of mutual interference.

Also, the slide table can be moved forward in both the state where the disk reproducing unit is raised and clamping the disk and the state where the disk reproducing unit is lowered and the disk is exchanged during the disk reproduction. It becomes possible.

Embodiment A loading device for a multi-disc player according to an embodiment of the present invention will be described with reference to the drawings.

In the figure, parts having the same functions as those shown in the conventional example are denoted by the same reference numerals.

 1 to 3 show a first embodiment of the present invention.

As shown in FIG. 1, the recesses 3a, 3a
Are rotatably supported on the slide table 2 and are rotationally driven by a drive device 15 provided on the slide table 2.

The disc tray 3 is provided with a notch reaching the outer periphery for inserting the disc reproducing unit 3 at a position corresponding to the recesses 3a.

The slide table 2 is slidably supported by the chassis 1 and exposes a concave portion of the disk tray 3 in a position indicated by a solid line on which a disk is mounted just above the turntable 4 of the disk reproducing unit 6 and in front of a front panel. Drive between the positions shown by the two-dot chain line where the disc can be replaced
Driven by 16.

The slide table 2 is provided with a notch extending around to allow the disk reproduction unit 3 to pass therethrough.

When the slide table 2 is at the position shown by the solid line in FIG. 1, the disk reproducing unit 6 is raised, and the turntable 4 provided on the disk reproducing unit 6 lifts the disk on the disk tray 3 to clamp and rotate the disk. At the same time, the optical pickup 5 moves and the disk is reproduced.

FIG. 2 shows details of the slide table 2 and the drive device 16 of the disk reproducing unit 6.

The disk reproducing unit 6 including the turntable 4 and the optical pickup 5 is rotatably supported by the chassis via shafts 6a, 6a provided on both rear side surfaces.

A pin 6b standing upright on the front surface of the disc reproducing unit 6 has a cam groove 18 of a cam gear 16 rotatably supported by a chassis.
Is engaged.

The cam groove 18 has front and rear horizontal portions 18a and 18c and an intermediate inclined portion 18b.

A pin 17a erected on the upper surface of the cam gear 17 has a cam groove 19b of an arm 19 rotatably supported on a chassis by a shaft 19a.
Is inserted.

A pin 19c erected at the tip of the arm 19 is engaged with a rib 2a formed on the back surface of the slide table 2.

A helical gear 17b formed below the cam gear 17 meshes with a worm 20 which is rotationally driven by a motor 21 via a belt transmission.

These worms 20, belt transmissions or motors 21
Is supported by the chassis.

The operation of the driving device 16 will be described with reference to FIGS.

When the cam gear 17 is at the rotating position shown in FIG. 7A, the disc reproducing unit is at an intermediate position during the up-and-down stroke, and the slide table is at a position in the housing.

Assuming that the rotation angle of the cam gear 17 is neutral at the position shown in FIG. (A) and + θ ° and −θ ° in the direction shown in FIG. (D), the lift of the cam groove 18 becomes as shown in FIG. Become. However, the directions indicated by a and b correspond to the directions a and b of the arrows in FIG.

When the cam gear 17 is rotated in the direction of arrow A from the position shown in FIG. 7A and the pin 6b is engaged with the position B shown in the cam groove, the disk reproducing unit 6 rises and enters the disk clamping state.

At this time, the pin 17a is engaged with the arc portion having the same radius from the center of the cam groove 19b, the arm 19 is not rotated, and the slide table 2 is not moved.

When the cam gear 17 further rotates in the direction of arrow A and reaches the position shown in FIG. 3B, the slide table 2 comes to an intermediate position in the forward movement while the disc reproducing unit is raised.

When the cam gear 17 further rotates in the direction of arrow A and reaches the position shown in FIG. 3C, the slide table is moved forward to the position where the disk can be replaced while the disk reproducing unit is raised. At this time, the disc is in a reproducing state.

When the motor 21 is reversed and the pin 6b is engaged with the position A of the cam groove 18, the slide table is retracted into the housing, the disc reproducing unit is lowered, and the disc is placed on the disc tray. .

When the motor 21 is further rotated in the same direction and the cam gear 17 is rotated in the direction B, the slide table can be protruded from the front panel in a state where the disk reproducing unit is lowered, so that the disk can be replaced.

 4 to 6 show a second embodiment of the present invention.

As shown in FIG. 4, the recesses 3a, 3a
Are rotatably supported on the slide table 2 and are rotationally driven by a drive device 15 provided on the slide table 2.

The disc tray 3 is provided with a notch reaching the outer periphery for inserting the disc reproducing unit 3 at a position corresponding to the recesses 3a.

The slide table 2 is slidably supported by the chassis 1 and exposes a concave portion of the disk tray 3 at a position shown in the figure where a disk is placed just above the turntable 4 of the disk reproducing unit 6 and in front of the front panel. The drive device 28 is driven between the positions where the discs can be exchanged.

The slide table 2 is provided with a notch extending around to allow the disk reproduction unit 3 to pass therethrough.

When the slide table 2 is at the position shown in FIG.
The disc reproducing unit 6 is raised, and the turntable 4 provided on the disc reproducing unit 6 is moved to the disc tray 3.
The upper disk is lifted and clamped to rotate the disk, and the optical pickup 5 moves to reproduce the disk.

5 (a) and 5 (b) show details of the drive device 28 of the slide table 2 and the disk reproducing unit 6.

The disk reproducing unit 6 including the turntable 4 and the optical pickup 5 is rotatably supported by the chassis via shafts 6a, 6a provided on both rear side surfaces.

Pins 6b and 6 erected on the front of the disc playback unit 6
b (only one is shown) is inserted through the cam grooves 11a, 11a of the slider 11 slidably supported by the chassis.

A rack 11b provided on the slider 11 meshes with a small gear 22a of a gear 22 rotatably supported by the chassis.

The intermittent gear 22b of the gear 22 can mesh with the intermittent gear 23c of the loading gear 23 rotatably supported by the chassis.

The segment gear 23a of the loading gear 23 can mesh with a rack 2b formed on the back surface of the slide table, and engages with the trigger teeth 2c.

The segment gear 23b of the loading gear 23 is formed stepwise from the segment gear 23a, and is rotatably supported by the chassis, and can mesh with the gear 27, but a part of the lower portion of the rack 2b is notched. Therefore, it does not mesh with the rack 2b. The gear 27 always meshes with the rack 2b.

A small gear 23d of the loading gear 23 meshes with a small gear 24b of a gear 24 rotatably supported by the chassis, and the helical gear 24a of the gear 24 is driven by a motor 26 as shown in FIG. Worm driven through the device
25 mesh.

The operation of the driving device 28 will be described with reference to FIGS.

When the loading gear 23 is at the rotation position shown in FIG. 7A, the disc reproducing unit is raised, and the slide table is at a position inside the housing.

Move the loading gear 23 from the position shown in FIG.
When rotated in the direction of, the intermittent gear as shown in FIG.
22b and the intermittent gear 23c mesh with each other, the slider 11 moves in the direction A, and the disk reproducing unit 6 descends.

Further, when the loading gear 23 is rotated in the direction A, after the descending stroke of the disc reproducing unit is completed, the segment gear 23b meshes with the gear 27 as shown in FIG. Then, by moving the rack 2b in the direction C, the slide table moves forward and comes to a position where the disk can be replaced. At this time, the notch of the rack 2b comes to a position corresponding to the segment gear 23b, so that the rack 2b and the segment gear 23b do not mesh with each other.

When the motor 26 is rotated in the reverse direction, the state shown in FIG. (C) passes through the state shown in FIG. (B) to the state shown in FIG. (A), and by this process, after the slide table is pulled into the housing, The disc playback unit goes up.

When the loading gear 23 is rotated in the direction D shown in FIG. 5D from the state shown in FIG. 5A, the segment gear 23a moves the trigger teeth 2c, and the segment gear 23a is moved to the rack 2b.
Then, the rack 2b is moved in the direction E, and the slide table moves forward to a position where the disk can be replaced. At this time, the segment gear 23b and the gear 27 are not meshed. In addition, the intermittent gear 22b and the intermittent gear 23c do not mesh with each other, and the disc reproducing unit remains elevated.

[Effects of the Invention] According to the multi-disc player of the invention, the disk drive unit and the slide table are driven by the same drive device, so that their operations are not synchronized and there is no risk of interference, and the device is simplified. Cost is reduced.

Also, the slide table can be moved forward in both the state in which the disk reproducing unit is raised and clamping the disk and the state in which the disk reproducing unit is lowered, so that the disk can be replaced during the disk reproduction. It becomes possible.

[Brief description of the drawings]

FIG. 1 is a plan view showing a multi-disc player according to a first embodiment of the present invention, FIG. 2 is a perspective view showing a main part of the multi-disc player, and FIGS. 3 (a) to 3 (e) are the same. FIG. 4 is a view showing the operation of the multi-disc player, FIG. 4 is a plan view showing a multi-disc player according to a second embodiment of the present invention, FIG. 5 (a) is a perspective view showing a main part of the multi-disc player, FIG. 5 (b) is a sectional view showing a main part of the multi-disc player, FIGS. 6 (a) to (d) are diagrams showing the operation of the multi-disc player, and FIG. 7 is a diagram showing a conventional multi-disc player. FIG. 8 is a perspective view showing a main part of the multi-disc layer. 1 ... chassis, 2 ... slide table, 2a ... rib, 2b ...
Rack, 2c: trigger teeth, 3: disk tray, 4: turntable, 5: optical pickup, 6: disk reproducing unit, 6a: shaft, 6b: pin, 7: motor, 8: worm, 9: gear, 10 ... Gear, 11… Slider, 12… Motor,
13 ... worm, 14 ... gear, 15 ... drive, 16 ... drive, 17 ... cam gear, 17a ... pin, 17b ... helical gear, 18 ...
Cam groove, 19 arm, 19a shaft, 19b cam groove, 19c pin, 20 worm, 21 motor, 22 gear, 22a small gear, 22b intermittent gear, 23 loading gear, 23a ... Segment gear, 23b… Segment gear, 23c… Intermittent gear,
23d: small gear, 24: gear, 24a: helical gear, 24b: small gear, 25: worm, 26: motor, 27: gear, 28: driving device.

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Tadashi Ansai 2-17-5 Shibuya, Shibuya-ku, Tokyo Inside Kenwood Co., Ltd. (72) Makoto Takahashi 2-17-5 Shibuya, Shibuya-ku, Tokyo Kenwood Co., Ltd. (56) References JP-A-62-192062 (JP, A) JP-A-61-48163 (JP, A) JP-A-64-79965 (JP, A)

Claims (1)

(57) [Scope of request for utility model registration] 1. A slide table rotatably supports a disk tray on which a plurality of disks are placed in respective recesses, and a driving device for rotating the disk tray to a predetermined position on the slide table is provided. Is driven between a loading position where the disk reproducing unit disposed on the disk is placed at a position where the disk can be clamped and an unloading position where one or more of the concave portions protrude from the front panel and the disk can be replaced. In this way, the disc on the disc tray when the slide table is at the loading position is lifted and clamped by raising the disc reproducing unit, and the clamped disc is placed on the disc tray by descending. Driven in a multi-disc player A notch is formed from the concave portion of the disc tray to the outer periphery of the disc tray so as to be inserted into the disc reproducing unit, and a notch is formed around the slide table to be inserted into the disc reproducing unit. And the drive of the disk playback unit is performed by a common drive device, and the unidirectional rotation of a motor that drives the common drive device moves the slide table from the unloading position to the loading position. Raise the disc playback unit, then move the slide table from the loading position to the unloading position,
By rotating the motor in the other direction, the slide table is moved from the unloading position to the loading position, then the disc reproducing unit is moved down, and then the slide table is moved from the loading position to the unloading position. Loading device for disc players.