JPH05325527A - Disk reproducing device - Google Patents

Abstract

PURPOSE:To improve the follow-up ability of a pick-up at the time of occurrence of vibration and vibration resistance against the reading of disk recording information. CONSTITUTION:Dampers (15a-15d) sealing high viscosity oil are arranged at positions where the weight per unit part of an upper chassis 12 is heavy and dampers (15a-15d) sealing low viscosity oil are arranged at the position where the weight per unit part is light and supported by a lower chassis 11. The vibration at the time of occurrence of vibration is absorbed by the dampers (15a-15d) and reduced. Also, rolling phenomenon is reduced by the parallel vibration of the upper chassis 12 against the vibrating direction with different amplitude.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disc reproducing apparatus which is used for a compact disc player or the like and which supports a chassis disposed inside with a damper.

[0002]

2. Description of the Related Art In a disc player for reproducing a compact disc, a turntable and a pickup are arranged on a chassis.

This chassis is supported by a plurality of dampers fixed to the casing of the player body. In this case, the plurality of dampers are made of an elastic member such as a rubber material and have the same shape.

[0004]

By the way, in the above-mentioned conventional disc player, the dampers of the same material and shape are used although the weight distribution of the chassis to each damper is different. Therefore, when vibration occurs, the amplitude of the heavy weight portion and the light weight portion of the unit portion in the chassis are different, and the chassis does not vibrate in parallel to the vibration direction. That is, a rolling phenomenon occurs. Therefore, there is a problem in that the followability of the pickup is poor, the information recorded on the disc cannot be read accurately, and the vibration resistance is not improved.

The present invention solves the problems in the prior art as described above, and provides an excellent disc reproducing apparatus capable of improving the followability of a pickup when vibration occurs and the vibration resistance for reading disc record information. The purpose is to provide.

[0006]

In order to achieve this object, a disc reproducing apparatus of the present invention comprises a chassis portion in which at least a turntable for mounting and rotating a disc and a pickup for reading recorded information on the disc are arranged. A configuration including a player main body portion in which a chassis portion is disposed, and a plurality of dampers that are disposed between the chassis portion and the player main body portion and that contain oils having different viscosities for supporting the chassis portion There is.

Further, a damper containing high-viscosity oil is arranged at a position where the unit portion weight of the chassis portion is heavy, and a damper containing low-viscosity oil is arranged at the portion where the unit portion weight is light. Is configured to be supported and disposed on the player main body.

[0008]

With the above structure, the disk reproducing apparatus of the present invention is arranged in the portion where the unit weight of the chassis is heavy, the damper containing high viscosity oil and the portion where the weight of the unit is light. The damper that contains low-viscosity oil absorbs vibrations during vibration. In this case, the chassis part vibrates in parallel to the vibration directions having different amplitudes, and the rolling phenomenon is reduced.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a disc reproducing apparatus of the present invention will be described in detail below with reference to the drawings.

In FIG. 1, the player main body 1 includes a loading / unloading section 3 for carrying a compact disc 2 into the player main body 1, mounting the compact disc 2 on the player main body 1, and removing the compact disc 2 from the player main body 1.
It has a peep window 4 for visually confirming the mounting and rotation of the compact disc 2 from the outside.

FIG. 2 shows the construction of the chassis portion in the compact disc player shown in FIG. In FIG. 2, this chassis portion has a lower chassis 11 which constitutes the player main body 1, and an upper chassis 12 which is arranged on the lower chassis 11.

The upper chassis 12 has a turntable 13 on which the compact disc 2 is mounted, which is rotationally driven by a motor, and a pickup 14 which moves linearly to read recorded information on the compact disc 2.

The lower chassis 11 has a semi-circular rising portion 1
3a, 13b, 13c, 13d are provided. The semi-circular rising portions 13a to 13d are provided on both edges of the opening 16 so that the semi-circular rising portions 13a and 13b and the semi-circular rising portions 13c and 13d are linearly positioned.

The upper chassis 12 is arranged in the opening 16. In this case, dampers 15a, 15b, 15 having different elasticity, which will be described in detail below, are provided between the upper chassis 12 and the semicircular rising portions 13a to 13d.
c and 15d are provided, and the upper chassis 12 is supported by the dampers 15a to 15d.

3 (a) and 3 (b) show dampers 15a-15.
The structure of d is shown. 3 (a) is the front, FIG. 3 (b)
Is a configuration related to the side surface.

In FIGS. 3A and 3B, the damper 15
a to 15d are made of the same material and shape such as a rubber material or a plastic material having elasticity as a whole.
Oils Om having different viscosities are enclosed in a to 15d. The concave portion 17 in the outer shape is the semicircular rising portion 1
It is about to be fitted and fixed in the openings (not shown) of 3a to 13d. Further, the front part 18 is to be inserted and fixed in an opening (not shown) of the upper chassis 12.

Next, the operation and function of the structure of this embodiment will be described. In the upper chassis 12, oils having different viscosities are enclosed and arranged in the dampers 15a to 15d according to the weight distribution of the heavy weight portion and the light weight portion. That is, the damper (15a) arranged at the position where the unit weight of the upper chassis 12 is heavy.
.About.15d) are dampers (15a.about.15a.about.15d) which are filled with highly viscous oil and are arranged at positions where the unit weight is light.
15d) is a damper (15
a to 15d).

The dampers 15a to 15d absorb vibrations when the player body 1 is vibrated, and the upper chassis 12
Reduce the vibration transmitted to. Furthermore, damper 1 with high and low viscosity filled with different oil against vibrations with different amplitudes
The upper chassis 12 with respect to the vibration direction by 5a to 15d
Vibrates in parallel. That is, the rolling phenomenon of the upper chassis 12 is reduced.

As a result, the rotation of the turntable 13 on which the compact disc 2 is mounted is stabilized, the followability of the pickup 14 is improved, the compact disc 2 can be read reliably, and its vibration resistance is improved. become.

[0020]

As is apparent from the above description, the disc reproducing apparatus of the present invention has a damper which is placed at a position where the unit weight of the chassis is heavy and which has a high-viscosity oil sealed therein, and a unit weight of the unit. The damper that contains low-viscosity oil placed in the lighter part absorbs the vibration during vibration and causes the chassis part to vibrate in parallel in the vibration directions with different amplitudes, thus reducing the rolling phenomenon. It has an effect that the followability of the pickup at the time of occurrence and the vibration resistance for reading the information recorded on the disc can be improved.

[Brief description of drawings]

FIG. 1 is a perspective view showing an external configuration of an embodiment of a disc reproducing apparatus of the present invention.

FIG. 2 is a perspective view showing a configuration of a chassis portion in the embodiment.

3 (a) and 3 (b) are a front view and a side view showing a configuration of a damper in the embodiment.

[Explanation of symbols]

 1 Player Main Body 2 Compact Disc 3 Placement / Rejection Section 4 Sight Window 11 Lower Chassis 12 Upper Chassis 13 Turntable 13a, 13b, 13c, 13d Semi-Circular Rise 14 Pickups 15a, 15b, 15c, 15d Damper 16 Opening 17 Recess 18 Front part

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yoshihiro Arimura 4-3-1, Tsunashima-higashi, Kohoku-ku, Yokohama-shi, Kanagawa Matsushita Communication Industrial Co., Ltd.

Claims (2)

[Claims] 1. A chassis section in which at least a turntable for mounting and rotating a disk and a pickup for reading recorded information on the disk are arranged, a player main body section in which the chassis section is arranged, and the chassis section. A disc reproducing apparatus comprising: a plurality of dampers, which are disposed between the player main body portion and support the chassis portion, and in which oils having different viscosities are enclosed. 2. A chassis in which a damper containing high-viscosity oil is arranged at a position where a unit weight of the chassis is heavy, and a damper containing low-viscosity oil is arranged at a position where the unit weight is light. 2. The disc reproducing apparatus according to claim 1, wherein the disc reproducing apparatus is arranged so as to be supported by the player main body.