JPH01113981A - Disk player - Google Patents

Abstract

PURPOSE:To move one pickup to the sides of both the faces of a disk irrespective of the mounting state of a player by fixing a spindle motor, and a first and a second guide bars to one common mechanical chassis and fixing this mechanical chassis to a base stand. CONSTITUTION:The spindle motor 1 having at least a turn table 2, the guide bars 5, 6 and a rack 9 are fixed to the mechanical chassis 24. Then, the mechanical chassis 24 is supported on the base stand 14 through an elastic body consisting of a spring, an air damper or the like. Consequently, a stress generated on the base stand 14 is attenuated by the elastic body 25 and accordingly, transferred to the turn table 2, the guide bars 5, 6, the rack 9 or the like with a difficulty. Thereby, a slider can be smoothly moved irrespective of the mounting state of the mechanical chassis.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a disc player, typified by an optical video disc player.

[Summary of the invention]

In the present invention, two guide bars that guide the movement of one pickup on the turntable side and the movement on the opposite side, and a mechanical chassis to which a spindle motor to which the turntable is attached are fixed are connected via one elastic body. Supported by a base.

[Background technology]

FIG. 5 shows the configuration of a conventional disc player. In the figure, 1 is a spindle motor that rotates a turntable 2. As shown in FIG. A clamper 3 clamps the disk 4 onto the turntable 2. A guide bar 5 is placed under the disk 4 and guides the sliding movement of the slider 7 in the disk radial direction. 6 is a guide bar placed above the disk 4. A gear 8 is attached to the slider 7 and meshes with a substantially U-shaped rack 9. When the slider motor (not shown) attached to the slider 7 is rotated, the gear 8 is driven.
Slider 7 moves (slides) in the radial direction of disk 4
be done. At this time, the slider 7 is guided in its sliding movement by the guide bar 5.

A pickup 11 is mounted on the slider 7, and the pickup 11 is also moved along with the slider 7 in the disk radial direction. As a result, signals recorded on tracks from the inner circumference to the outer circumference of the disk 4 are reproduced.

The slider 7 is also equipped with a tilt control mechanism.

That is, the pickup 11 is rotatably supported by the slider 7 with the bin 12 as a fulcrum. When the drive mechanism 13 is driven, the pickup 11 rotates about the pin 12, and its angle with respect to the disk 4 can be controlled.

The lower surface of the disc 4 is reproduced as described above, but when the upper surface of the disc 4 is reproduced, the gear 8 is driven, and the slider 7 is pulled out from the guide bar 5 and fitted into the guide bar 6. During this time, the slider 7 is reversed while being guided by the rack 9, and the pickup 11 is directed downward (toward the disk 4).

Then, reproduction and tilt control are performed in the same way as in the case of the bottom surface.

As shown in FIG. 4, such racks 9, guide bars 5, 6, etc. are attached to the bottom surface of a base 14 that constitutes a lower housing having legs 16, and to the side walls of the base 14. The spindle motor 1 is fixed on the base 14.

[Problem that the invention seeks to solve]

In this way, the conventional disc player has the spindle motor 1 fixed to the base 14, and the guide doper 5, which guides the slider 7 to one side and the other side of the disc 4.
6. Since the rack 9 etc. are fixed to the base 14 and the plate 15, if the mounting surface is inclined when the base 14 is placed in a predetermined position, the stress generated will be applied to the guide bar 5°. 6. This has the disadvantage that it is transmitted to the rack 9 and the like, making it difficult to move the slider 7 smoothly.

Therefore, the present invention enables the slider to be smoothly moved regardless of the state in which the player is placed.

[Means for solving problems]

The disc player of the present invention includes a turntable on which a disc is placed, a spindle motor that rotates the turntable, a pickup that reproduces signals from the disc, a slider on which the pickup is mounted, and a disc radius on the turntable side of the slider. a first guide bar that guides movement in the disk direction; a second guide bar that guides movement of the slider in the disk radial direction on the opposite side of the turntable; a spindle motor to which at least the turntable is fixed; and a first guide. It is characterized by comprising a mechanical chassis to which a bar and a second guide bar are fixed, a base to which a disk loading mechanism etc. are fixed, and an elastic body which elastically supports the mechanical chassis to the base. .

[Effect]

When the spindle motor rotates, a disk placed on the turntable rotates. A slider equipped with a pickup is guided by a first guide bar and moves in the radial direction of the disk, and at this time, the surface (lower surface) of the disk on the turntable side is reproduced. When the slider moves along the second guide bar, the surface (top surface) of the disk opposite to the turntable is played.

The spindle motor, the first guide bar, and the second guide bar are fixed to a common mechanical chassis. The disk loading mechanism is fixed to the base either directly or via a substrate. The mechanical chassis is fixed to the base via an elastic body.

Therefore, the stress generated in the base is attenuated by the elastic body and is difficult to be transmitted to the mechanical chassis.

〔Example·〕

1 and 2 show the structure of a disc player of the present invention, and parts corresponding to those in FIGS. 4 and 5 are given the same reference numerals.

In FIGS. 1 and 2, reference numeral 22 denotes a cover that constitutes a housing together with the base 14. Reference numeral 23 denotes a board fixed to the base 14, and a mouth of a desk (not shown).

-The ding mechanism etc. are fixed. A mechanical chassis 24 is made of, for example, a relatively thick iron plate. The mechanical chassis 24 has a closed cross section and is designed to have high rigidity. As shown in FIG. 2, the mechanical chassis 24 has its upper and lower surfaces connected to its left and right sides, and its front and rear surfaces are open, so that the tray 31 for transporting the disk can be inserted therethrough.

The mechanical chassis 24 includes at least a spindle motor 1 having a turntable 2. The guide bar 5.6 and the rack 9 are fixed. By doing this, it is possible to ensure the positional accuracy of the lower guide bar 5 and turntable 2, the positional accuracy of the upper guide bar 6 and turntable 2, and the positional accuracy of the guide bars 5, 6 and rack 9. can.

The mechanical chassis 24 is supported on the base 14 via an elastic body 25 made of a spring, an air damper, or the like. As a result, the stress generated in the base 14 is attenuated by the elastic body 25,
Mechanical chassis 24. Therefore the internal turntable 2
, the guide bar 5.6, the rack 9, etc.

It is also possible to attach a loading mechanism or the like to the mechanical chassis 24. However, if this is done, the load on the mechanical chassis 24 increases, and its rigidity must be made even stronger. Therefore, as in the embodiment, it is preferable that the loading mechanism and the like be fixed on the substrate 23 (or directly on the base 14) separate from the mechanical chassis 24.

FIG. 3 represents another embodiment of the invention.

In the first embodiment, the mechanical chassis 24 is connected to the base 14.
In contrast to this, in this embodiment, they are arranged at an angle (diagonally when viewed from the top) with respect to the front.

Further, a slider 7 (pickup (11)) is arranged behind the turntable 2. By arranging it in this way, the space inside the housing can be used effectively, and further miniaturization becomes possible.

〔effect〕

As described above, according to the present invention, the spindle motor, the first guide bar, and the second guide bar are fixed to one common mechanical chassis, and this mechanical chassis is fixed to the base via the elastic body. Because I made it.

One pickup can be smoothly moved to both sides of the disc regardless of the mounting state of the player.

[Brief explanation of the drawing]

Fig. 1 is a front view of a disc player of the present invention, Fig. 2 is a plan view thereof, Fig. 3 is a plan view of another embodiment, Fig. 4 is a perspective view of a conventional disc player, and Fig. 5 is its plan view. FIG. 1...Spindle motor 2...Turntable 3...Clamper 4...Disk 5.6...Guide bar 7...Slider 8...Gear 9...Rack 11...Pickup 12... Bin 13... Drive mechanism 22... Cover 23... Board 24... Mechanical chassis 25... Elastic body Patent applicant Pioneer Corporation

Claims (1)

[Claims] A turntable on which a disk is placed, a spindle motor that rotates the turntable, a pickup that reproduces signals from the disk, a slider on which the pickup is mounted, and a radial direction of the disk on the turntable side of the slider. a first guide bar that guides the movement of the slider, a second guide bar that guides the movement of the slider in the radial direction of the disk on the opposite side of the turntable; and at least the spindle motor to which the turntable is fixed; A mechanical chassis to which the first guide bar and the second guide bar are fixed, a base to which the disk loading mechanism etc. are fixed, and an elastic body that elastically supports the mechanical chassis with respect to the base. A disc player comprising: