JPH06162755A - Vibrationproof structure of disk player - Google Patents

Abstract

PURPOSE:To attenuate the vibration to be generated by a motor for a turn table and to suppress the propagation thereof. CONSTITUTION:A driving unit 1 having a motor 9 for the turn table for rotating a disk is mounted to a chassis at three points. Elastic members 3, 4 are provided near the mounting point between the driving unit 1 and the chassis 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an anti-vibration structure for a disk player, and more particularly to an anti-vibration structure for a disc player which converts audio and images into digital signals (or analog signals) for recording and / or reproduction.

[0002]

2. Description of the Related Art Conventionally, for example, a driving unit of a disc player is arranged between an upper chassis and a lower chassis and attached to the lower chassis with screws at four places. A motor is attached to the front side of the driving unit, and a turntable for mounting a disc is provided on the motor shaft. Further, the driving unit is provided with a pickup for reading the recorded information on the disc, a moving mechanism for moving the pickup, and a turn carriage and its driving mechanism for a structure in which the pickup is turned upside down.

[0003]

However, since the driving unit is attached to the chassis at only four places with screws, the vibration generated by the rotation of the turntable motor causes torsional vibration in the driving unit itself. However, there is a problem in that it causes the noise to be generated or disturbs the image because of the adverse effects on the reproduced or recorded video and audio which are propagated to each part of the disc player through the chassis. Also,
Such vibrations also cause loosening of the mounting screws and fatigue of soldering and welding parts, which also causes a problem of failure. Further, since there is no portion for absorbing the deformation generated when the driving unit is mounted, there is a problem that the mounting dimension of the component is deviated.

Therefore, the present invention has been made in order to solve the above-mentioned problems, and forms a vibration-proof structure by providing a vibration-proof material near a screw stop position between the chassis and the driving unit. Thus, the vibration generated in the driving unit is suppressed, and the deformation of the parts and the deviation of the dimensions are prevented.

[0005]

According to the present invention, a driving unit equipped with a turntable motor for rotating a disc is attached to a chassis at three points, and the driving unit between the chassis and the driving unit is attached at three points. It is characterized in that an elastic material is provided in the vicinity.

[0006]

According to the present invention, since the disk player has the vibration isolating structure configured as described above, even if the motor rotates at high speed and the driving unit vibrates, the vibration is absorbed by the elastic material and the vibration is reduced. Further, the deformation caused when the driving unit is attached to the chassis is also absorbed and alleviated, so that the deformation vibration is less likely to occur.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 are diagrams showing an embodiment of a disc player provided with a vibration isolation structure for a disc player according to the present invention. Reference numeral 1 denotes a driving unit, and the driving unit 1 has a U-shaped space in a side view located between an upper chassis (not shown) and a lower chassis 2.
On the front side of the driving unit 1, a direct drive motor 9 provided with a turntable 8 on the upper side is attached, and a moving mechanism for moving the pickup and a tilt mechanism for adjusting the inclination of the pickup are provided on the lower side and the upper side. Driving unit 1 is 3 in chassis 2
It is fixed in place. That is, the screw unit 5 is fixed to one screw hole 5 at the rear portion of the driving unit 1 and the screw holes 6 and 7 on both sides of the motor 9 by screws 10, 11 and 12, respectively. Further, in the vicinity of both sides of the rear screw hole 5, between the driving unit 1 and the chassis 2, vibration damping materials 3 and 4 made of rectangular hard rubber or the like are provided.

Next, the operation will be described. First, when a disc such as a video disc is placed on a tray having a disc receiving surface, the tray moves inside the case (not shown). The tray is lowered to put the disc on the turntable 8, and the disc is held between the chuck member and the turntable 8. The motor 9 operates and the disc rotates together with the turntable 8. With a pickup (not shown)
The information on the disc is played or stored. Vibrations are generated by the rotation of the motor 9, but the vibration-proof materials 3 and 4 absorb this vibration and suppress the direct vibration from propagating to other parts than the motor. In addition, when the vibration propagates, the vibration damping materials 3, 4
Shows viscoelasticity, and this vibration is attenuated. As a result, the vibration disappears promptly. In addition, when the driving unit is attached to the chassis at four points as in the past, a slight deformation may occur in the driving unit due to screw tightening, which causes the driving unit to be twisted, which causes vibration. It also causes However, in the present proposal, since the mounting is performed at three places and the pair of vibration damping materials 3 and 4 are provided so as to sandwich the screw fixing position 5 for mounting the driving unit 1, the deformation is absorbed and the torsional vibration is effectively generated. Can be suppressed. Therefore, the rotation of the disc is not affected by the vibration, and the quality of video and audio is improved.

In this embodiment, a rectangular elastic material is used as the vibration isolator, but the shape of the vibration isolator is not limited to this, and it may be circular or rectangular, and the material exhibits elasticity such as hard rubber. Anything is fine.

[0010]

As described above, according to the present invention, the driving unit is attached to the chassis at three locations, and the vibration damping material is provided in the vicinity of the screw fastening position to damp vibrations and suppress propagation. In addition, the deformation of the parts when assembling the driving unit is absorbed, and the deterioration of the image quality and sound during recording and reproduction is prevented.

[Brief description of drawings]

FIG. 1 is a schematic perspective view showing an embodiment of a vibration isolation structure for a disc player.

FIG. 2 is an exploded perspective view showing a mounted state of a disc player having the vibration isolation structure shown in FIG.

[Explanation of symbols]

 1 Driving unit 2 Chassis 3, 4 Anti-vibration material (elastic material) 5, 6, 7 Screw fixing position

Claims (1)

[Claims] 1. A driving unit equipped with a turntable motor for rotating a disk is attached to a chassis at three locations, and an elastic material is provided near the attachment location between the chassis and the driving unit. An anti-vibration structure for a disc player, which is characterized in that