JPH0341326Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field] The present invention relates to a disc player that reproduces information recorded on the recording surface of a compact disc or the like in a contact or non-contact manner, and in particular, it relates to a disc player that reproduces information recorded on the recording surface of a compact disc, etc. The present invention relates to a disk player in which a guide shaft that guides the pickup moves forward and backward together with the pickup.

[Technical background]

Recent audio equipment is becoming smaller and thinner. Therefore, disk players that drive compact disks and the like must also respond to this trend. In particular, this disk player is being developed for use in vehicles, and making it smaller and thinner is an important issue in order to reduce the air occupation rate inside the vehicle.

[Prior art]

FIG. 3 (plan view) shows the main parts of a conventional compact disc player.

A turntable 2 connected to a spindle motor 1 is provided on the frame 7. A compact disc 3 is supported on this turntable 2. This compact disk 3 is rotated by the drive of the spindle motor 1. When the compact disc 3 rotates, the optical pickup 4 facing the recording surface of the compact disc 3 (bottom surface in the figure) moves from the inside of the compact disc 3 to the outside (in the direction from the dashed line to the solid line in the diagram).
The information recorded on the recording surface is reproduced.
This optical pickup 4 is mounted on a slider 5. On both sides of this slider 5 are holders 5a.
is formed, and this holder 5a is inserted into the guide shaft 6. This guide shaft 6
Both ends are fixed to the frame 7 via fasteners 8. The slider 5 is connected to the guide shaft 6 mentioned above.
It is supported by and reciprocates. When the optical pickup 4 reaches the lead-out position 3a of the compact disc 3, the reproduction operation ends.

[Problems with conventional technology]

However, the conventional disc player described above has the following problems. That is, the lead-out position of the compact disc 3 is near the periphery of the disc. Therefore, the frame 7 has a structure in which it protrudes outward from the peripheral edge of the disk by at least the distance of the stopper 8. This amount of protrusion increases the size of the device, and this protrusion of about 10 mm becomes a nuisance in the recent development trend of compact disc players, which is to pursue miniaturization and thinning of units to the limit. In particular, there is a tendency for designs to be made such that the right side in Figure 3 is the front side of the player and the loading direction of the disc 3.
The amount of protrusion of the stopper 8 portion becomes a major problem in the design of the player.

[Purpose of this invention]

The present invention has been made in view of the above-mentioned conventional problems, and aims to provide a disk player that has a simple structure and can be easily made smaller and thinner.

[Means for solving problems]

The disc player according to the present invention includes a frame in which a recess is formed with one end open, a disc rotation support member disposed on the frame inside the bottom of the recess, and a disc rotation support member disposed inside the recess of the frame. A pick-up that moves to face the disk, a guide shaft that extends from the pick-up in the direction of the rotational support member, and a holder that is provided on the frame and supports the guide shaft so that it can move forward and backward. This is a characteristic feature.

[Effect]

In the above means, the pick-up moves within a recess formed in the frame, and a guide shaft extending from the pick-up is supported in a cantilevered manner by a holder on the frame. The pick-up moves within the recess as the guide shaft slides back and forth with respect to the holder.

[Example of the present invention]

Embodiments of the present invention will be described below with reference to FIGS. 1 and 2.

FIG. 1 is a plan view of the disk player, and FIG. 2 is a side view thereof.

(Configuration of Example) Reference numeral 7a in the figure is a frame. This frame 7a is fixed within the device housing via a vibration isolating member or the like. A spindle motor 1 is fixed to this frame 7a. A turntable 2 is attached to the upper part of this spindle motor 1, and a compact disk 3 is supported on this turntable 2. Further, a hole 7b is cut out in one side of the frame 7a, and the slider 10 is exposed to this hole 7b. This slider 10
is equipped with a non-contact optical pick-up 4. This optical pickup 4 has an objective lens 4b held in a lens barrel 4a. This objective lens 4b is a compact disc 3
The recording surface 3b is opposed to the recording surface 3b at a predetermined interval. Furthermore, guide shafts 11 are fixedly installed on both sides of the slider 10 in parallel to each other. This guide shaft 11 extends in the direction of the spindle motor 1. This guide shaft 11 is
It is inserted into a holder 12 protruding from the bottom surface of the frame 7a. A metal bush 14 is press-fitted into this holder 12, and the above-mentioned guide shaft 1
1 is connected to the holder 12 via this metal bush 14.
It is freely supported by the government.

In the illustrated embodiment, one guide shaft 11 includes a pair of holders 12 having a predetermined interval.
Supported by. Further, the slider 10 has a movement stroke from the lead-in position (the position shown by the dashed line in the figure) of the compact disc 3 to the lead-out position (the position shown by the solid line in the figure),
During this time, the guide shaft 11 moves forward and backward while being supported by the holder 12. Further, it is desirable to set the length of the guide shaft 11 so that the tip 11a of the guide shaft 11 does not protrude from the compact disk 3 when the slider 10 is in the lead-in position.

(Operation of the embodiment) Next, the operation of the disc player with the above configuration will be explained.

The slider 10 in its initial position is at the dashed line in the figure, that is, at the lead-in position of the compact disc 3. In the reproducing operation, first, the spindle motor 1 is driven. Then, the compact disc 3 rotates. Motor 13 that drives slider 10 at the same time
(See Figure 3) rotates. The rotational force of the motor 13 is transmitted to the slider 10 by, for example, a feed screw method or a rack and pinion method, and the slider 10 is driven. Slider 1
The guide shaft 11, which is integral with the holder 0, is supported by a metal bush 14 press-fitted into the holder 12 so as to be able to move forward and backward. Therefore, the slider 10 is connected to the holder 1 via the guide shaft 11 and the metal bush 14.
The compact disc 3 is moved from the inside to the outside while being supported by the disc 2. During this time, the condensed beam transmitted through the objective lens 4b of the optical pickup 4 traces on the recording surface 3b. Information is reproduced by detecting changes in the intensity of the beam reflected from the recording surface 3b. When the objective lens 4b reaches the lead-out position 3a of the compact disc, the reproducing operation ends.

In addition, in the embodiment shown in the figure, the guide shaft 1
1 has 2 guide shafts, but 3 or more guide shafts 1
1 may be arranged in a well-balanced manner.
Further, this disc player can also be applied to a contact type disc player.

[Effects of this invention]

As described above, according to the present invention, a pick-up is provided in a recess formed in a frame and open at one end, a guide shaft extending from the pick-up is held in a holder on the frame, and the guide shaft slides on the holder. This causes the pick-up to move within the recess. By moving the pick-up within the recess in this manner, the entire disc player can be constructed with a thin dimension, and the pick-up can be moved until, for example, the side surface of the pick-up coincides with the open end of the recess or until the pick-up protrudes outward from the recess. The side surface of the pickup that has moved to this movement limit position can be used as the width dimension limit of the disk player. Therefore, unlike in the prior art, a part of the frame does not protrude further to the outside of the pickup that has been moved to the movement limit position, making it possible to minimize the width of the disc player.

[Brief explanation of the drawing]

FIG. 1 is a plan view of a disk player according to the present invention, FIG. 2 is a side view thereof, and FIG. 3 is a plan view of a conventional disk player. 1...Spindle motor, 2...Disc support member (turntable), 3...Disc, 3
b... Recording surface, 4... Pickup, 7a... Frame, 10... Slider, 11... Guide shaft, 12... Holder.

Claims (1)

[Scope of utility model registration request] a frame in which a recess with an open end is formed; a disk rotation support member disposed on the frame inside the bottom of the recess; and a disk rotation support member that moves within the recess of the frame to face the disk. A disk player comprising: a pick-up; a guide shaft extending from the pick-up in a direction toward the rotational support member; and a holder provided on the frame and supporting the guide shaft so as to be movable forward and backward.