KR950014828B1 - Reck macanism of ldp - Google Patents

Abstract

The deck mechanism of a laser disk player comprises: a transferring unit for transferring a pick-up unit to the upper/lower portion of a disk or to a shelter portion; a reversing unit for reserving the pick-up unit transferred to the shelter portion by 180 deg.; and a height control unit for controlling the height of a turn table according to the direction of an object lens of the pick-up unit reversed by the reversing unit.

Description

LDP's Deck Mechanism

1 illustrates the deck mechanism of a conventional LDP.

2 is a view showing the deck mechanism of the present invention LDP,

(a) is a cross-sectional view of the deck mechanism of the LDP.

(b) is a rear view of the deck mechanism of the LDP.

3 is a view illustrating a solenoid that is a component of the present invention.

(a) is the solenoid approaching the turntable.

(b) is the state where the solenoid blocks the turntable projection.

4 is a view for explaining the pickup portion which is a component of the present invention.

(a) shows the state when the upper surface of the disc is read.

(b) shows the state when the lower surface of the disc is read.

5 is another embodiment of the height adjustment means that is a component of the present invention,

(a) is a cross-sectional view of the height adjustment means consisting of only the main portion.

(b) is a perspective view of the turntable shown in FIG. 5A.

(c) is a perspective view of the turntable shaft shown in FIG. 5A.

* Explanation of symbols for main parts of the drawings

100: disc 101: turntable

102: protrusion 103: solenoid

104: screw portion 130: rotation axis

140: driving motor 150: guide protrusion

151: Home of the Invitation 152: Main part

153: ball 154: elastic member

200: pickup portion 201: support arm

202: rotary motor 203: pin

204: fixed gear 205: rotary gear

206: motor

The present invention relates to the deck mechanism of the LDP (Laser Disk Player), in particular to make the thickness of the deck as thin as possible.

The deck mechanism of the conventional LDP reads information from a driving means for driving the laser disk 10 storing information as shown in FIG. 1, and a laser disk (hereinafter referred to as a disk) rotated by the driving means. The shipment was composed of a pickup section 20 and moving means for moving the pickup section up and down the disk.

The drive means includes a turntable 11 for seating and rotating the disk 10, a clamper 12 for fixing the disk to the turntable, and a rotation shaft 13 for transmitting rotational power to the three parts. And the spindle all 14.

In addition, the moving means is basically composed of a rack 21 and the pinion 22 to return to the rack, and additionally a linear guide shaft (23) for guiding the pick-up to move to the linear lever portion, and the pickup portion It consists of a rotation guide 24 and the rotation guide shaft 25 to move to the curved portion.

Reference numeral 26 is an objective lens formed at one end of the pickup portion.

The additional description of the related art having the above configuration and the problems thereof will be described.

The deck mechanism of the LDP shown in FIG. 1 uses a double-sided disk 10 and is an existing deck mechanism that auto reverses without removing the disk 10.

The structure is complicated because the rack 21 for moving the pickup section 20 above and below the disk is provided for autoreversing. That is, the pickup unit 20, which reads the lower surface of the disc 10, tracks the disc at the lower end of the rack 21, and when the upper surface is read, the pickup unit 20 rotates around the rotation guide 24 and the rotation guide shaft ( 25) is used to move to the upper end of the rack.

Such a structure has a problem that the thickness of the deck too thick.

The present invention is to solve the above-mentioned problems, comprising a transfer means for moving the pickup portion to the upper and lower portions of the evacuation space or the disk, and the inverting means for inverting the pickup portion moved to the evacuation space by the transfer means 180 It is intended to make the thickness of the deck as thin as possible by providing a height adjusting means for adjusting the height of the turntable according to the orientation of the objective lens of the pickup portion inverted by the inverting means.

The deck mechanism of the present invention LDP is a transfer means for moving the pickup portion 200 to the evacuation space (p) or the upper and lower portions (ul) of the disk 100, as shown in Figures 2 to 3, and The turntable according to the orientation of the inversion means for inverting the pick-up part 200 moved to the evacuation space p by the conveying means 180 degrees and the objective lens 26 formed in the pick-up part 200 inverted by the inverting means. It consists of a height adjusting means for adjusting the height of (101).

In addition, the transfer means is composed of a support arm 201 for supporting the pickup unit 200, and a rotating motor 202 for rotating the support arm.

The reversing means includes a pin 203 hinged and fixed to a pickup unit, a fixed gear 204 fixed to the pin, a rotating gear 205 engaged with the fixed gear to rotate, and a mower for driving the rotary gear. The rotor 206.

In addition, the height adjusting means is coupled to the drive motor 14, the rotary shaft 130 by the drive motor 140, the threaded portion 104 is formed, and the threaded portion 104 of the rotary shaft 130 And the protrusions 102 formed on the turntable 101 to rotate, and the protrusions 102 are blocked so that the turntable 101 is stopped and the solenoid 103 can move up and down in accordance with the rotation direction of the rotation shaft 130. ) Is configured.

In addition, the configuration of another embodiment of the height adjustment means is composed of a guide means for guiding the turntable 101 up and down as shown in Figure 5, and a fixing means for fixing the turntable guided by the guide means.

The guide means includes a guide protrusion 150 formed inside the turntable 101 and guide grooves 151 formed on the rotation shaft 130 to be joined to the guide protrusion, and the fixing means is formed on the shaft of the turntable. Concave portion 152, the ball 153 is inserted into the recess, and the elastic member 154 to prevent the ball from being separated from the recess.

Reference numeral 120 is a clamper for fixing the disk 100 to the turntable 101, and 140 is a driving motor for turning the turntable.

Additional description of the present invention having the above configuration and the effects thereof will be described below.

When power is applied, the driving motor 140 rotates the turntable 101 and the disk 100, and the pickup unit 200 reads information of the disk.

When the pick-up unit 200 reads the lower surface information of the disk 100, the rotary motor 202 transfers the pick-up apparatus to the evacuation space p as shown in FIG. 2B.

When the pickup unit 200 is transferred to the evacuation space, the reversing means formed at the end of the support arm 201 is operated. That is, when the motor mounted on the pick-up device rotates the rotary gear 205, the rotary gear meshes with the fixed gear 204 fixed to the pin to turn the pick-up apparatus to the direction of the objective lens 260 as shown in FIG. 4A. Make it the same form.

In addition, when the pick-up unit 200 is transferred to the evacuation space p, as shown in FIG. 3, the solenoid 103 blocks the protrusion 102 formed on the turntable 101 by the operation of the solenoid 103. 101 prevents the rotation.

Therefore, when the rotary shaft 130 rotated by the drive motor 140 rotates, the turntable 101 is blocked by the solenoid 103 and thus cannot be rotated, so that the turntable is formed on the threaded portion 104 formed on the rotary shaft 130. 101 is screwed and can move up and down according to the rotational direction of the rotation shaft 130.

When the operation of changing the downward direction in the direction of the objective lens 260 and the operation of lowering the turntable 101 downward is completed, the pickup unit 200 moves on the surface of the disc 100 to read information again.

As such, the present invention can easily reduce the thickness of the deck because the movement of the pickup device for the autoreverse is simply made by a mechanical combination of the rotary gear and the fixed gear.

Claims (7)

A transfer means for transferring the pick-up portion to the upper and lower portions of the evacuation space or disk, an inverting means for inverting the pick-up apparatus moved to the evacuation space by the transfer means by 180 degrees, Deck mechanism of the LDP, characterized in that composed of the height adjustment means for adjusting the height of the turntable according to the orientation. The deck mechanism of claim 1, wherein the transfer means comprises a support arm for supporting the pickup and a rotation motor for rotating the support arm. The reversing means includes a pin for hinge fixing the pick-up part, a fixed gear fixed to the pin, a rotating gear that rotates in engagement with the fixed gear, and a motor for driving the rotary gear. The deck mechanism of the LDP. According to claim 1, The height adjustment means is a drive motor, a rotating shaft rotated by the drive motor and the threaded portion formed, a projection formed on the turntable coupled to the rotating screw portion of the rotating shaft, and the turntable to block the projection The stop mechanism of the LDP, characterized in that the solenoid is configured to move up and down in accordance with the rotation direction of the rotation axis is stopped. The deck mechanism of claim 1, wherein the height adjusting means comprises a guide means for guiding the turntable up and down, and a fixing means for fixing the turntable guided by the guide means. The deck mechanism of claim 5, wherein the guide means comprises a guide protrusion formed inside the turntable, and guide grooves formed on the turntable side in combination with the guide protrusion. 6. The deck mechanism of claim 5 wherein the securing means comprises a recess formed in the shaft of the turntable, a ball inserted into the recess, and an elastic member that prevents the ball from escaping from the recess.