KR19980085120A - Pickup transfer device - Google Patents

Abstract

The present invention relates to a pickup transport apparatus, wherein the guide shaft for adjusting the caution of the guide shaft with respect to the parallelism of the lead screw is supported so as to be supported by a spherical bush accommodated in the receiving groove of the pickup base, thereby reducing the parallelism of the lead screw. Automatically adjusts the caution of the guide shaft, which is carefully fixed in the vertical direction, to smoothly guide the pickup base on which the optical pickup device is installed, thereby reducing the load on the guide shaft to a minimum, and in particular, the pickup base. Can be stopped at a precise position.

Description

Pickup transfer device

The present invention relates to a pickup transport device for guiding and transporting an optical pickup device, and more particularly, to reduce the load on the guide shaft for guiding the pickup base to a minimum, as well as to precisely position the optical pickup device in the horizontal axis direction. It relates to a pick-up feeder that can be transported easily.

In general, an optical disc is a type of recording medium for recording or reproducing information in a spiral or concentric track. The information recorded on the disc may be a disk loading mechanism for loading and unloading an optical disc. It is realized by an optical pickup apparatus for reproducing information by irradiating a laser beam to a recording pit.

In the conventional pickup and transfer device for transferring the optical pickup device, as shown in Figs. 1 and 2, the turntable 12 in which the non-magnetic portion of the optical disk is in close contact with the deck base 10 is located, the turntable Is coupled to the axis of rotation of the spindle motor 14, which rotates at a linear velocity. On one side of the spindle motor 14, an optical pickup device 16 for recording and / or reproducing information on the disk and A pickup transport device for transport in the radial direction is provided.

The pick-up feeder includes a drive motor 20 mounted on the rear side of the deck base 10, a drive gear 22 coupled to the rotation shaft of the drive motor 20, and a driven gear 24 that interlocks with the drive gear 22. Then, the lead screw 26 and the lead screw 26 rotatably connected to the driven gear 24 and the penetration of the pickup base 18 so as to guide the pickup base 18 in a sliding manner at the same time The guide shaft 28 penetrates the hole 18a.

Here, both ends of the guide shaft 28 is fixed to the fixing portion 30 fixed on the deck base 10, one end of the lead screw 26 is connected to the driven gear 28, the other end is deck It is fixed to the fixing part 32 fixed on the base 10. The lead screw 26 and the guide shaft 28 are fixed to have the same parallelism as the direction in which the optical pickup device 16 is transferred, that is, in the horizontal axis direction.

In the conventional pickup transport apparatus configured as described above, when the driving motor 20 is driven to reproduce and / or record the information of the optical disk in close contact with the upper surface of the turntable 12, the driving coupled to the rotating shaft of the driving motor 20 is driven. The guide shaft 28 penetrating the through hole 18a of the pickup base 18 as the gear 22 and the driven gear 24 interlock together and the lead screw 26 connected to the driven gear 24 is rotated. Linear reciprocating while sliding along the disk to record and / or reproduce information on the optical disk.

However, since the optical pickup device conveyed by the rotational force of the lead screw as described above was linearly reciprocated in a sliding manner along the guide shaft penetrated through the through hole of the pick-up base, the guide shafts fixed to the fixed portions at both ends are respectively connected to the lead screw. As it is not fixed to have the same parallelism as the parallelism of, it is fixed in the vertical direction with respect to the lead screw, so that when the optical pickup device is transported, the outer peripheral surface of the guide shaft and the inner peripheral surface of the through hole are mutually contacted with each other to generate friction. Accordingly, there is a problem in that a load is applied to the guide shaft and the optical pickup device cannot be smoothly transferred, and in particular, the pickup base cannot be stopped at a precise position.

The present invention is to solve the above problems, an object of the present invention is a guide shaft perpendicular to the parallel direction of the lead screw and the transport direction of the optical pickup device, that is, the horizontal axis (X-X ') direction (Y direction) It is possible to smoothly guide the pick-up base in which the optical pickup device is installed by automatically adjusting the caution when the lock is biased, and accordingly to provide a pick-up feeder which can minimize the load on the guide shaft.

1 is a perspective view showing a pickup transport device installed on the deck base according to the prior art,

2 is a cross-sectional view taken along line A-A of FIG. 1, illustrating a guide shaft for guiding the pickup base;

3 is a cross-sectional view showing a guide shaft of the pickup transport apparatus according to the present invention;

4 is a plan view showing a state in which the pickup base of the optical pickup apparatus is guided by the pickup transport apparatus according to the present invention.

Explanation of symbols on the main parts of the drawings

18: pickup base 18a: through hole

18b: accommodation groove 100: adjustment means

102 spherical bush 102a hollow part

The present invention is to achieve the above object, the present invention is a pickup base to be transferred in the radial direction of the disk seated on the turntable, a lead screw screwed with the pickup base to transfer the pickup base, and the lead screw In a pickup transfer device having a drive motor connected to one end of the rotary screw to rotate the lead screw and a guide shaft for guiding linear transfer of the pickup base, a spherical bush is interposed between the pickup base and the guide shaft. Is achieved by.

Hereinafter, a preferred embodiment of the pickup transport apparatus according to the present invention will be described in detail with reference to FIGS.

A turntable 12 is mounted on the upper surface of the deck base 10 so that the non-magnetic portion of the optical disk is in close contact with each other. The drive motor 20 is installed, and the drive gear 22 which is linked with the driven gear 24 is coupled to the rotation shaft of the drive motor 20. Then, one end of the lead screw 26 is connected to the driven gear 24 to linearly reciprocate the pickup base 18 of the optical pickup device 16.

The other end of the lead screw 26 and both ends of the guide shaft 28 are fixed to the deck base 10 by a fixed portion, and the lead screw 26 and the guide shaft 28 are screwed to the lead screw 26. At the same time, the pick-up base 18 is coupled to penetrate the guide shaft 28, and the through-hole 18a of the pick-up base 18 is perpendicular to the parallelism of the lead screw 26 (Y-axis direction). The adjusting means 100 is automatically inserted to automatically adjust the caution of the guide shaft 28 fixedly biased.

The adjustment means 100 and the through-hole 18a of the pickup base 18 to adjust the care of the guide shaft 28 when the optical pickup device 16 passes the careful position of the guide shaft 28; It is composed of a spherical bush 102 is inserted into the communication receiving groove 18b.

Referring to the operation of the pickup transport apparatus according to the present invention configured as described above in detail as follows.

The optical pickup device 16 in the state in which the other end of the lead screw 26 and one end of the guide shaft 28, one end of which is connected to the driven gear 24 on the deck base 10, are fixed by the fixing unit 30, respectively. The pickup base 18 is fixed in parallel to reciprocate linearly. That is, the guide shaft 28 slidably penetrates the hollow portion 102a of the spherical bush 102 inserted into the receiving groove 18b of the pickup base 18.

Thereafter, when the driving motor 20 is driven to transfer the optical pickup device 16 in the radial direction of the optical disk, the driving gear 22 coupled to the rotating shaft of the driving motor 20 and the driven gear interlocked with the driving motor 20 are driven. As the 24 is rotated, the optical pickup device 16 is linearly reciprocated in the horizontal axis direction (X-X ') to record information on the optical disk surface or to reproduce the recorded information.

At this time, the guide shaft 28 is carefully fixed to the parallelism of the lead screw 26 and the horizontal axis (X-X ') direction in which the optical pickup device 16 is conveyed, that is, from both ends of the guide shaft 28 When the optical pickup device 16 is transported with at least one end fixed on the Y axis higher or lower than the parallelism of the lead screw 26, the pick-up base 18 moved along the guide shaft 28 is carefully watched. Careful adjustment is made by the spherical bushing 102 as it passes through the portion, so that the load on the guide shaft can be reduced to a minimum, and the pick-up base can be stopped at a precise position.

According to the pickup transport apparatus according to the present invention as described above, it is possible to smoothly guide the pickup base in which the optical pickup device is installed by automatically adjusting the caution of the guide shaft carefully fixed in the vertical direction with respect to the parallelism of the lead screw. Of course, accordingly, the load on the guide shaft can be reduced to a minimum, and in particular, the pick-up base can be stopped at a precise position.

The present invention is not limited to the above-described specific preferred embodiments, and various modifications can be made by any person having ordinary skill in the art without departing from the gist of the present invention claimed in the claims. Of course, such changes will fall within the scope of the claims.

Claims (1)

A pickup base which is transferred in a radial direction of a disk seated on a turntable, a lead screw which is screwed with the pickup base to transfer the pickup base, a drive motor connected to one end of the lead screw to rotate the lead screw, In the pickup transport apparatus having a guide shaft for guiding the linear transport of the pickup base, And a spherical bush is interposed between the pickup base and the guide shaft.