JPS60163272A - Turntable lifting device of disc player - Google Patents

Abstract

PURPOSE:To execute assuredly operation with simple constitution by providing the titled device with a turntable lifting driving means for lifting the turntable supporting a disc reproducible and loading/unloading the disc of a jacket. CONSTITUTION:Under the non-storage state of a disc, a driving slider 25 is excited in the arrow C direction by a spring member 28, its stopper part 252 is abutted on a fitting member 26 and the main shaft 23 of the turntable 22 is located on the upper part of an inclined part 251 to control the turntable 23 to locate on the most lifted upper dead point. At that time, a driving slider 25 is supported by its pin slit part 253 and a shutter 30 is rotated clockwise through a link pin 312 and controlled so that a jacket loading port 291 is closed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a turntable elevating device for a disc player suitable for, for example, a video disc system.

[Technical background of the invention]

Recently, in the field of audio equipment including video disc systems, efforts have been made to achieve high fidelity playback as much as possible.
A disc record playback device using M (,z code modulator, N) technology has been developed and is becoming popular. In such a disc record reproducing apparatus, each part is highly precisely controlled in order to reproduce information signals such as image signals digitally recorded on a disc with high fidelity and high density.

For example, in order to protect the disc, the jacket containing the disc is directly inserted into the device so that human hands do not touch it, and the jacket is automatically removed and turned inside the device. It is configured to be reproducibly attached to a table and to be taken out like pulling an empty jacket out of the device.

That is, as shown in FIG. 1, a main shaft 1 is fixed to a substantially central portion of the turntable 9, and a lower end of the main shaft 1 is engaged with an inclined portion 3 for guiding a drive slider 20 for vertical driving.

This drive slider 3 is driven by the rotational force of a motor 4 that moves in and out of the salmon (not shown) on a belt 5. Warm 6,
It is converted into a linear reciprocating motion via the worm wheel 7 and connecting rod 8 and moves in the directions of arrows (A) and (B), and as the inclined portion 3 moves, the main shaft 1 is moved up and down. to move the turntable 9 up and down. Further, the turntable 9 is connected to a pulley 1 driven by a drive motor 10 via a belt 12 so that rotational force can be transmitted thereto.

On the other hand, on one side of the chassis 13, a shutter mechanism section 14 for inserting salmon is installed in a loading path corresponding to the turntable 9.

This shutter mechanism unit U has a shutter 15 that can be opened and closed freely.
When the turntable 9 is located at the lowermost, so-called bottom dead center (standby mode), it can be opened, and when the turntable 9 is located at the top dead center (disc loading complete state), the shutter and tarlock portions are opened. 1
6 in the closed position.

Now, in such a configuration, in the standby mode, the turntable 9 is located at the bottom dead center with the drive slider 2 moved the most in the direction of arrow (B), and the shutter mechanism opening is in a state where it can be inserted (opened). . When a jacket (not shown) is inserted through the shutter mechanism opening and disk loading is performed, the motor 4 is driven to a predetermined state and the drive slider 2 is moved in the direction of the arrow. Then, as the drive slider 2 moves, the inclined portion 3 presses the main shaft 1 and the turntable 9
is raised, and a jacket disc (not shown) is mounted on the turntable 9 so as to be reproducible, and the turntable 9 is rotated by the motor 10 to play the disc. At this time, when the shutter 15 at the shutter mechanism opening is pulled out of the device after loading the disk, the shutter locking section 16
When the empty jacket is inserted into the apparatus again, the lock f by the shutter locking part 16 is released.

[Problems with background technology]

By the way, in the turntable elevating device described above, the elevating operation of the turntable 9 is performed by the drive slider 2 using the rotational force of the motor 4.
Since the turntable 9 is configured to perform a linear reciprocating motion, the positioning operation of the turntable 9 at the top and bottom dead center is not as reliable, is prone to malfunction, and has very poor controllability.

However, in the above-mentioned turntable elevating device, since the elevating and lowering operations of the turntable 9 and the opening and closing operations of the shutter 15 are configured as separate operations, a long play access time is required to ensure the reliability of each operation.

Furthermore, in the turntable lifting device, when the turntable 9, which is rotatably driven by a belt drive, is lifted or lowered, the belt 12 is in the diagonal state.
There is a risk that it may easily come off during transportation, for example.

[Purpose of the invention]

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an extremely good turntable elevating device for a disc player that has a simple configuration, promotes reliable operation, and improves controllability. With the goal.

[Summary of the invention]

That is, the present invention is provided in a jacket insertion slot into which a jacket in which a disc is stored is inserted, and includes a shutter that is opened and closed in conjunction with the number of people entering the jacket, and a shutter that is linked to the opening and closing of this shutter. The present invention is characterized by comprising a turntable elevating and lowering drive mechanism for elevating and lowering a turntable that supports a disk in a reproducible manner to attach and detach the disk from the jacket.

[Embodiments of the invention]

Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings.

FIGS. 2 and 3 each show a turntable elevating device for a disc player according to the present invention.

That is, 20 in the figure is a cabinet, and this cabinet,
A chassis 21 equipped with a playback mechanism (not shown) and the like is disposed within the housing 20 .

The chassis 21 has a turntable 2 approximately in the center.
2 is rotatably installed. This turntable 22 has a main shaft 23 formed on its lower surface.
is vertically movable and rotatably supported by a bearing main shaft housing 24 installed on the chassis 21. A drive slider 2 for driving the turntable up and down is provided on the lower surface of the main shaft housing 24 and the chassis 2.
5 through the mounting members 26 and 27 with an arrow (C'),
It is supported movably in the direction (D).

The driving slider 25 has an inclined part 251 for lifting and lowering guides formed at one end corresponding to the main shaft 23, and a stator 9 part 252 for regulating the position, and a connecting part 252 at the other end. A pin pick and structure 253 are formed. The driving slider 25 has a hanging portion at its intermediate portion, and a spring member 28 is engaged between the hooking portion and one of the mounting members 27 so as to apply a spring force in the direction of arrow (C). A jacket insertion opening 291 is formed in the front nozzle 29 of the cabinet 20, and a shutter 30 is provided to close the jacket insertion opening 291. This shutter 3° is rotatably supported by the chassis 21 via a shaft 301, and a link pin 302 rotatably supported by the pin slit portion 253 of the drive slider 25 is located approximately at the center thereof. A shutter cam 303, . 904 are provided corresponding to both ends of the jacket 31, respectively. Furthermore, a pair of jacket guide parts 32 and 33 are provided at both ends of the chassis 21 corresponding to the jacket insertion 0291 so as to correspond to the turntable 22.

Now, the turntable elevating device configured as described above operates as described below.

That is, as shown in FIG.
8 in the direction of arrow (C), the part 252 of the strike 9 comes into contact with the mounting member 26, and the main shaft 23 of the turntable 22 is positioned above the inclined part 251, and the turntable 23 is controlled to the highest raised top dead center. At this time, the drive slider 25 has its pin slit portion 25
The shutter 30 is controlled to close the jacket insertion opening 29 by rotating the shutter 30 clockwise in the drawing via a link pin 312 supported by the shutter 3 .

Here, when the jacket 31 is inserted as shown in FIG. 4, the shutter cams 303, 304
Press to rotate the shutter 3o counterclockwise in the figure.

Then, the shutter 30 moves the drive slider 25 in the direction of arrow (2) via the link pin 312 and pin slit portion 253. As a result, the drive slider 25
guides the main shaft 23 of the turntable 22 to the lower part of the inclined part 251, and lowers the turntable 22 to a position where the jacket can be accommodated.

When the jacket 31 is inserted to a predetermined position, the disk 32 (see FIG. 5) inside the jacket 3 is held in a predetermined state by a holding mechanism (not shown).

Next, as shown in FIG. 5, when the empty jacket 3 holding the disk 32 is pulled out by the holding mechanism,
The shutter 3o is reversed clockwise in the figure to close the jacket insertion opening 29 and the drive slider 25
move in the direction of arrow (C). As a result, the main shaft 23 of the turntable 22 is guided to the upper part of the inclined part 25 of the drive slider 25 and rises, and the disc 3
2, and the reproducing mechanism section is driven here to perform disc reproduction.

When the disc 32 is removed after the playback of one disc is completed, the rack in the window, and
When the jacket 31 is inserted through the insertion opening 291, the jacket 31 rotates the shutter 30 counterclockwise in the figure in substantially the same manner as the loading operation, thereby lowering the turntable 22. At this time, the disk 32 is released from the holding mechanism and is housed in the empty jacket 31, where the salmon and
Unloading is completed and the machine returns to standby mode by pulling out the cover.

In this way, the turntable elevating device is configured to operate the turntable elevating drive slide/25 in conjunction with the opening and closing of the shutter 30. According to this, with a simple configuration, it is possible to promote as much reliability as possible in raising and lowering the turntable, and also to reliably prevent sudden closing of the shutter 30.

Further, according to this, the turntable 22 is at the bottom dead center only when loading and unloading the jacket 31, and is at the top dead center in standby mode and playback mode. For this reason, for example, the turntable 22
When driven in a belt drive type, this can contribute to improved prevention of separation of the power transmission belt (not shown). .

It goes without saying that the present invention is not limited to the above embodiments, and that various modifications can be made without departing from the gist of the invention.

〔Effect of the invention〕

As detailed above, according to the present invention, with a simple configuration,
In addition, it is possible to provide an extremely good turntable elevating device for a disc player that promotes reliable operation and improves controllability.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing a conventional turntable elevating device for a disc player, and FIGS. 2 and 3 are plan views showing essential parts of a turntable elevating device for a disc player according to an embodiment of the present invention, respectively. The side view, FIGS. 4 and 5 are side views showing the operating state of FIG. 3, respectively.

Claims (1)

[Claims] A shutter that is installed in the jacket insertion slot into which the jacket in which the disc is stored is opened and closed in conjunction with the number of people entering the jacket, and a shutter that is linked to the opening and closing of this shutter to enable the disc to be played. 1. A turntable elevating device for a disc player, comprising a turntable elevating and lowering mechanism for elevating and lowering a supported turntable to mount and remove a disc of the jacket.