JPH05972Y2 - - Google Patents

Description

[Detailed Description of the Invention] Technical Field of the Invention The present invention relates to an optical disk player, and in particular, is intended to keep the surface of its optical pickup constantly clean.

Prior Art and Problems The performance of optical pickups used in optical disc players such as compact disc players and video disc players deteriorates when dust or the like adheres to the lens on the surface. Therefore, maintenance to ensure performance, such as periodically cleaning the lens part, is required. However, since the optical pickup has a mechanism that allows the lens portion to be moved with high precision, it is not desirable for general users to touch it directly. As a result, maintenance will be performed by experts, but it is expected that frequent cleaning will be required, especially in dusty environments such as those used in automobiles.
It is difficult to remove the player and open/close the lid each time.

Purpose of the invention The present invention aims to automatically clean the surface of an optical pick-up using the mechanism of an optical disc player, thereby keeping the surface of the pick-up always clean without requiring regular maintenance. .

Structure of the Invention The present invention includes a sliding disk loading section for loading and transporting a disk inside the player body and conversely ejecting the disk from inside the player body; In an optical disc player equipped with an optical pickup that optically reads information on a disc surface, a flexible cleaning wiping member that comes into sliding contact with the surface of the optical pickup is attached to the rear end of the disc mounting part. This feature will be described in detail below with reference to the illustrated embodiment.

Embodiment of the invention Figure 1 is a configuration diagram showing an embodiment of the invention.
is a perspective view showing the main mechanism inside the player, and b is a side view. The figure shows an example of a two-stage disk mounting section, where 1 is an upper tray, 2 is a lower tray, 3 is an optical pickup, and 4 is a motor for driving the tray. The upper tray 1 is provided with a circular recess 11 for mounting a disk (not shown) and a notch 12 extending radially from the center thereof. The central portion of this notch 12 is for receiving a turntable for rotating a disk (not shown), and the rear end is for forming an optical path from the optical pickup 3. A similar notch 21 is also provided in the lower tray 2.

The lower tray 2 is supported by the base 51 of the player body 5 and slides thereon, and the upper tray 1 is supported by the lower tray 2 and slides thereon. Therefore, the rotation range of the lower tray 2 is limited to the base 51 of the main body 5.
The movable range of the upper tray 1 is limited by the length of the upper tray 1, but the movable range of the upper tray 1 is the same as that of the lower tray 2. 6 and 7 are tray 1,
2, the rotation from the motor 4 is transmitted through a gear mechanism 10 including pinions 8,9. This gear mechanism 10 is set, for example, to move the upper tray 1 twice as far as the lower tray 2.

An optical pick-up 3 is located at the rear end of the lower tray 2.
There is a section 22 that passes above the trays 1 and 2.
In the loading state where the disk is completely retracted, the optical pickup 3 optically reads information on the disk surface (not shown) through the notch 21 of the tray 2 and the notch 12 of the tray 1. Therefore, since the rear end 22 of the lower tray 2 always makes one reciprocation above the pick-up 3 during loading (and ejection), the wiping member A is attached here to automatically clean the surface of the pick-up 3. Clean. FIG. 1c is an enlarged view of this part. The wiping member A is made of a flexible material, such as chamois leather or cloth, or even a brush-like material.
The vicinity of the tip comes into sliding contact with the surface of the pick-up.

FIG. 2 is a cross-sectional view of the optical pickup 3.
32 is a focusing lens, 32 is an aluminum pipe that supports it, 33 is a moving coil, 34 is a stopper, 35 is a plate, 36 is a magnet, 37
is a yoke. There is a gap of several tens of μm between the yoke 37 and the pipe 32, so that the lens 31 integrated with the pipe 32 etc. can be moved with high precision in the direction of the arrow shown in the figure. Wiping member A of this example
is in sliding contact with the surface of this lens 31 to automatically remove dust and the like when loading and unloading the disk.

Effects of the Invention As described above, according to the present invention, the surface of the optical pickup of an optical disc player can always be kept clean (at least before playback), so that the performance of the pickup cannot be degraded by dust or the like. do not have. Moreover, there is no need to open the lid of the player body, and there is no need to directly touch the optical pickup, so no special maintenance is required, making it particularly useful for use in vehicles.

[Brief explanation of the drawing]

Fig. 1 is a configuration diagram showing one embodiment of the present invention;
The figure is a sectional view of an optical pickup. In the figure, 1 and 2 are disk mounting parts, 22 is a rear end, 3 is an optical pickup, 31 is a lens, 4 is a motor, 5 is a player body, and A is a wiping member.

Claims (1)

[Scope of utility model registration request] A sliding disk mounting part is installed inside the player body to carry in the disk loaded inside the player body, and conversely to eject the disk from the inside of the player body. An optical disc player equipped with an optical pick-up for reading data, characterized in that a flexible cleaning wiping member is attached to the rear end of the disc mounting portion and comes into sliding contact with the surface of the optical pick-up. .