KR19990008732A - Optical pickup unit feeder - Google Patents

Abstract

An optical pickup unit transfer device is disclosed.

The optical pickup unit conveying apparatus includes an optical pickup unit having a deck, a guide rail installed on the deck, a guide ball to which the guide rail is slidably coupled, and a conveying means for conveying the optical pickup unit along the guide rail. In the optical pickup unit conveying apparatus comprising a lubricating oil storage means that can be stored in the lubricating oil is inserted into the inner surface of the guide ball.

This has the advantage that the fine dust or foreign matter attached to the guide hole or the guide rail can be discharged through the lubricating oil storage means.

Description

Optical pickup unit feeder

The present invention relates to an optical pickup transfer apparatus, and more particularly, to an optical pickup unit transfer apparatus for reciprocally transferring an optical pickup unit in a radial direction of a disc.

The optical pickup unit used in LDP (Laser Disc Player), CDP (Compact Disc Player), MODD (Magnetic Optical Disc Driver), etc. scans a light beam onto an optical recording medium, detects the light beam reflected from the medium, and detects the optical recording medium. Read the information recorded in the Since the optical pickup unit must accurately focus and track the optical recording medium in order to correctly read the information recorded on the optical recording medium, the components constituting the optical pickup unit must be operated with precision.

FIG. 1 is a schematic bottom view of a conventional optical pickup unit transport apparatus, and FIG. 2 is a schematic partial cross-sectional view of an optical pickup unit of the optical pickup unit transport apparatus of FIG. 1.

Referring to each of the drawings, a deck (12) in the disc player, a turntable (11) for placing a disk (not shown) and rotated by the drive motor 18 to rotate the disk placed thereon, and the turntable (11) Each optical pickup unit 21 is provided for reading information stored in a disk. The optical pickup unit 21 has an objective lens 21a for focusing light generated from a light source (not shown) onto a disk on the turntable 11.

And the deck 12 is provided with a transfer device for transferring the optical pickup unit 21 in the radial direction of the disc, and the optical pickup unit 21 as the optical pickup unit transfer device 100 sliding the optical pickup unit 21 in the reciprocating transfer direction First and second guide rails 13a and 13b that are coupled to each other, a rack 14 coupled to the optical pickup unit 21, a motor 15 and a gear 16 installed on the deck 12, And a pinion 17 connected to the gear 16.

The rack 14 and the base 21b of the optical pickup unit 21 are provided with at least one guide ball 14a, 21c, and the guide balls 14a, 21c slide on the first guide rail 13a. The optical pickup unit 21 is coupled to the rack 14 so as to reciprocate and move on the first guide rail 13a at the same time as the rack 14 is moved. And flow in other directions is inhibited, and the pinion 17 is engaged with the rack 14.

In the conventional optical pickup unit transport apparatus 100 having such a configuration, the power of the motor 15 is transmitted to the pinion 17 through the gears 16 so that the pinion 17 is rotated, and the pinion ( The rotation is transmitted to the rack 14 engaged with the pinion 17 by the rotation of the 17, the rack is a linear reciprocating motion, the guide hole (14a) of the rack inserted into the first guide rail (13a) and the light, According to the guide hole 21c of the pickup unit 21, the optical pickup unit 21 coupled to the rack 14 may be reciprocated in the radial direction of the disc along the first guide rail 13a.

The optical pickup unit conveying apparatus which acts as described above has the following problems.

first; When the optical pickup unit is operated, dust or foreign matter cannot precisely move the reciprocating movement.

second; Since the injected oil of the guide ball of the optical pickup is not stored for a long time, friction between the guide ball and the guide rail occurs due to lack of oil, and precise feeding is not possible.

The present invention has been made to solve this problem, by providing a lubricating oil storage means in the guide ball provided in the optical pickup unit to discharge dust attached to the guide ball so that the optical pickup unit can be precisely reciprocated transfer An object of the present invention is to provide an optical pickup unit transfer device.

1 is a schematic bottom view of a deck having a conventional optical pickup unit transfer device;

2 is a partial cross-sectional view of the optical pickup unit of the optical pickup unit transfer device of FIG.

3 is a schematic partial cross-sectional view of an optical pickup unit in the optical pickup transfer apparatus according to the present invention;

4 is a cross-sectional view taken along the line IV-IV 'of FIG. 3.

Explanation of symbols for main parts of the drawings

12 ... deck 11 ... turntable

21 ... optical pickup unit 13a ... 1st guide rail

15 ... motor 17 ... pinion

14 ... rack 16 ... gear

21a.Objective 31.Base

31a ... Guide ball 32 ... Lubricant storage means

In order to achieve the above object, the present invention provides an optical pickup unit having a deck, a guide rail installed on the deck, a guide ball slidingly coupled to the guide rail, and the optical pickup unit is transferred along the guide rail. An optical pickup unit conveying apparatus including a conveying means, characterized in that it is provided with a lubricating oil storage means that can be stored by inserting the lubricating oil into the inner surface of the guide ball.

In the present invention, the lubricating oil storage means includes a groove formed along the inner surface of the guide ball, and the groove is formed spirally along the inner surface of the guide ball.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 3 is a schematic partial cross-sectional view of the optical pickup unit excluding the same portion as in FIG. 1 in the optical pickup unit transport apparatus according to the present invention, and FIG. 4 is a line IV-IV 'of the guide ball of the optical pickup unit of FIG. A cross-sectional view is shown along the side.

First, in Figs. 3 and 4, members and portions having the same reference numerals as those in Figs. 1 and 2 perform the same functions, and the description in Figs. 3 and 4 will be described with reference to Fig. 1.

Referring to the drawings, the first and second guide rails 13a and 13b installed on the deck 12 to slidably support the optical pickup unit 21, the motor 15 installed on the deck 12, and A gear 16, a pinion 17 connected to the motor 15 via the gears 16, and a rack 14 coupled to the optical pick-up unit 21 and engaged with the pinion 17; Equipped. The rack 14 and the optical pickup unit 21 are provided with guide balls 14a and 31a, which can be slidably coupled to the first guide rail 13a, respectively.

In the optical pickup transport apparatus configured as described above, when the motor 15 is operated, the rotational force of the motor 15 is transmitted to the pinion 17 through the gears 16 so that the pinion 17 rotates, and the pinion The point that the optical pickup unit 21 reciprocates along the first guide rail 13a through the rack 14 engaged with (17) is similar to that of the conventional optical pickup unit conveying apparatus 100 described with reference to FIG. same.

By the way, in the optical pickup unit 30 of the optical pickup unit conveying apparatus according to the present invention, in particular, the deck 12, and the first and second guide rails (13a, 13b) provided on the deck 12 and The first guide rail 13a is slidably coupled to the base 31, and the optical pickup unit 30 includes at least one guide ball 31a on the base 31.

And as a feature of the present invention, the inner surface of the guide hole (31a) is provided with a lubricating oil storage means 32 that can be stored by inserting the lubricating oil. The lubricating oil storage means 32 is a groove formed to a predetermined depth along the inner surface of the guide hole 31a on both sides of the guide. The grooves are spirally formed on the inner surface of the guide ball 31a so as to smoothly maintain the lubricant while the first guide rail 13a and the guide ball 31a are rotated with each other.

In this way, the lubricant storage means 32 of the optical pickup unit conveying apparatus according to the present invention is molded into the grooves in the guide hole 31a, so that the lubricant can always be stored in the grooves, in particular, the guide hole 31a. Dust or foreign matter on the first guide rail 13a or the first guide rail 13a, the lubricating oil storage means 32 is formed into a spiral groove, and the dust or foreign matter is induced and discharged along the spiral. Since the lubricating oil is stored in the lubricating oil storing means 32, the lubricating oil can be used for a long time. You can exercise.

The optical pickup unit transport apparatus according to the present invention constructed and operated as described above has the following effects.

first; By providing a lubricating oil storage means, it is possible to easily discharge dust and foreign matter.

second; Since the injected lubricant of the guide ball of the optical pickup can be stored for a long time, it can be used for a long time.

third; Lubrication enables precise reciprocating movement.

Although the present invention has been described with only the embodiments shown in the drawings, those skilled in the art will understand that various embodiments are possible from this.

Claims (3)

Optical pickup unit transfer including a deck, a guide rail installed on the deck, a guide ball slidingly coupled to the guide rail, and a transport means for transferring the optical pickup unit along the guide rail In the apparatus, Lubricating oil storage means that the lubricant is inserted into the inner surface of the guide ball can be stored, characterized in that the optical pickup unit transfer device. The method of claim 1, The lubricant storage means, optical pickup unit transport apparatus characterized in that it comprises a groove (groove) formed along the inner surface of the guide ball. The method of claim 1, The groove is optical pickup unit transport apparatus, characterized in that formed in a spiral along the inner surface of the guide ball.