JP3027878B2 - Information recording / reproducing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an information recording / reproducing apparatus such as a compact disk drive.

[0002]

2. Description of the Related Art This type of technology uses a stepping motor as a traverse motor as one method for accessing an optical pickup for recording / reproducing information at an arbitrary position from a disc which is a conventional information recording medium, and controls the same. There is an information recording / reproducing device of open control.

[0003]

However, in the above-mentioned conventional configuration, the traverse motor is open control,
Since a gap is required to slide between the guide shaft for regulating the moving direction and the sliding portion of the optical pickup, unnecessary vibrations in the pitching or yawing direction are generated when the optical pickup is accessed, and the information recording / reproducing is not performed. There was a problem that reliability was deteriorated.

An object of the present invention is to solve the above-mentioned conventional problems, and an object of the present invention is to provide an information recording / reproducing apparatus which minimizes vibration generated by a stepping motor and moves an optical pickup more stably.

[0005]

In order to achieve the above object, the present invention provides a vibration preventing means comprising a piezoelectric element on the optical pickup side of a sliding portion between a guide means and an optical pickup, so as to reduce the vibration amount of the pickup. Apply the corresponding voltage to the piezoelectric element.
Thus, the gap between the sliding portions can be regulated by the adjustment.

[0006]

With this configuration, unnecessary vibrations in the pitching direction and the yawing direction which are most remarkable when the optical pickup is moved can be reduced, and the reliability of the information recording / reproducing apparatus can be improved.

[0007]

(Embodiment 1 ) A first embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows a configuration of an information recording / reproducing apparatus according to a first embodiment of the present invention, and FIG. 2 is an enlarged sectional view of a guide shaft and a sliding portion of an optical pickup. Figure 1
In FIG. 2 , 1 is a disk having a spiral information track, 2 is a spindle motor for rotating the disk 1,
3 is an optical pickup, 4 is a stepping motor for moving the optical pickup 3, 5 is a stepping motor drive circuit for driving the stepping motor 4, 6 is an optical pickup that holds the optical pickup 3 movably in the radial direction of the disk 1, A lead screw 7 for transmitting the torque of the optical pickup 3 to the optical pickup 3, a guide shaft 7 for regulating the position of the disk 1 in the radial direction of the disk 1, and a slide screw 10 provided on the optical pickup 3 with the guide shaft 7. It is a piezoelectric element.

The operation of the information recording / reproducing apparatus configured as described above will be described below. Disc 1
In order for the optical pickup 3 to read information from an arbitrary position, the stepping motor 4 receives a target command from the stepping motor driving circuit 5 and reads the information from the read screw 6.
Is rotated to give a thrust to the optical pickup 3 to move the optical pickup 3 to a predetermined position. However, at this time, since there is a gap between the optical pickup 3 and the guide shaft 7, the optical pickup 3 vibrates in the pitching direction, the yawing direction, and the like. The end of the movement is detected by the end of the command of the stepping motor drive circuit 5, and the amount of vibration is detected by a focus error signal of the optical pickup 3 and a tracking error signal (not shown).
A voltage corresponding to the amount of vibration. This makes it possible to regulate the gap between the sliding portions, thereby reducing the amount of vibration.

[0009]

As described above, according to the present invention, a vibration preventing means comprising a piezoelectric element is provided on the optical pickup side of the sliding portion between the guide means and the optical pickup, and the vibration amount of the pickup is reduced.
By applying a corresponding voltage to the piezoelectric element,
Has a configuration that can regulate unnecessary vibrations.
An object of the present invention is to realize an excellent information recording / reproducing apparatus capable of reducing the number of times and enabling stable recording and reproduction of information.

[Brief description of the drawings]

FIG. 1 is a perspective view of a main part showing a configuration of an information recording / reproducing apparatus according to a first embodiment of the present invention.

FIG. 2 is an enlarged sectional view of a guide shaft and a sliding portion of the optical pickup according to the first embodiment of the present invention.

[Explanation of symbols]

 Reference Signs List 1 disc 2 spindle motor 3 optical pickup 4 stepping motor 5 stepping motor drive circuit 6 lead screw 7 guide shaft 10 piezoelectric element

Claims (1)

(57) [Claims] 1. A disk on which information is spirally recorded, a motor for rotating the disk, an optical pickup for recording and reproducing information recorded on the disk, and a radius of the optical pickup for the disk. Traverse means including a stepping motor for moving the traverse means by a predetermined distance in the direction, guide means slidably held with the optical pickup for regulating the position of the traverse means in the movement direction, the guide means and the light A vibration preventing means comprising a piezoelectric element provided on the optical pickup side of a sliding portion with the pickup, wherein the vibration preventing means applies a voltage corresponding to the vibration amount of the pickup to the piezoelectric element.
An information recording / reproducing apparatus characterized in that a gap between the sliding parts is regulated by adding the gap to a sliding element.