KR100555538B1 - Optical apparatus - Google Patents

Abstract

An apparatus for preventing shaking when driving a disc tray is disclosed. The disclosed optical device includes a disk mounting portion and a guide rail provided on a first surface for mounting a disk, a disk tray including a rack gear and a sliding groove provided on a second surface, and a plurality of upper guide rails formed on both side walls. And a main frame having a plurality of frame rails formed on the upper surface, a feeding assay including an optical pickup in the main frame, a gear pulley for transmitting power of the loading motor, the gear tray, and the loading motor to the gear tray, and the gear. And a loading assay having a change slide cam and a lever ejector to move the feeding assay up and down in accordance with the power of the tray. In addition, the lever ejector is provided with a tension portion, characterized in that the tension stopper which can support the tension portion is formed in the main frame. Therefore, when the disc tray is attached or detached, the shake caused by the initial starting torque of the loading motor for loading the disc tray on which the disc is mounted is improved, thereby reducing scratches on the outer peripheral surface of the disc.

Lever Ejector, Tension Unit, Tension Stopper

Description

Optical apparatus

1 is an exploded perspective view for explaining the operation of the optical device according to a preferred embodiment of the present invention.

Figure 2 is a perspective view showing the back of the disk tray used in the optical device according to a preferred embodiment of the present invention.

3A and 3B are cross-sectional views illustrating a lever ejector to explain an operation of preventing flow when driving the disc tray of the optical device according to a preferred embodiment of the present invention.

<Explanation of symbols for the main parts of the drawings>

100: optical device 110: disk tray

112: disk seat 114: rack gear

116: guide rail 118: sliding groove

119: disc tray cam 120: loading assay

122: upper guide rail 124: frame rail

126: gear tray 127: gear pulley

129: loading motor 131: change slide cam

133, 135: first and second guide boss

150: feeding assay 164: lever ejector boss

165: Slide Cam Boss 167: Boss

168: lever ejector 169: tension portion

172: loading motor 180: main frame

182: tension stopper 184: groove

The present invention relates to an optical device, and more particularly, to an apparatus for preventing shaking when driving a disc tray.

In general, an optical device includes a loading assembly and a disc tray mounted to the loading assay in order to transfer the disk into and out of the loading assay. The loading assay includes a turntable on which the disk carried by the disk tray is placed, and a chuck installed to be accessible and spaced apart on the turntable side to clamp the disk on the turntable with the turntable. Further, in the loading assay, an optical pickup for irradiating a light beam to the disk to read information from the clamped disk is slidably installed in the radial direction of the disk.

The conventional disc tray guide structure is composed of a sliding groove formed on a lower side of a slide portion formed long in both directions of the disc tray, and a lower guide projecting on both side walls of the main frame so as to contact the upper surface with the sliding portion. .

The upper guide is provided on both side walls of the main frame along the moving direction of the disk tray to guide the upper and lower guides during the reciprocating movement of the disk tray. Lower guides are provided on both sides of the upper surface of the main frame along the moving direction of the disc tray, and serve to support the disc tray with the function of guiding the reciprocating disc tray from moving left and right.

However, there is a problem in that the disc tray is shaken due to the initial starting torque of the unloading mode in which the disc tray is from the loading assay and the gap between the rails on both sides.

In the disc tray guide structure as described above, in order to attach and detach the disc to the disc tray, the disc seating surface formed on the top surface of the disc tray must be completely exposed.

In this state, the disc tray sags downward due to the load of the disc tray itself. Thus, the upper guide forms a small gap, and a plurality of upper guides are formed along the moving direction of the disc tray on both side walls of the main frame so that the disc tray can be reciprocated. It functions to guide the shaking up and down.

Therefore, the upper guide formed on both side walls of the main frame of the conventional disc tray guide structure and the lower guide formed on both sides of the upper surface of the main frame should be designed to maintain a very small gap. As a result, tolerances for the size and position of the drive upper and lower guides are managed very precisely and strictly. However, there is a problem that precisely and strictly managing tolerances is very difficult in design and manufacturing.

SUMMARY OF THE INVENTION The present invention has been made to improve the above problems, and an object of the present invention is to provide an optical device that can reduce the shaking of the disc tray when loading / unloading the disc tray into a loading assay.

According to one type of the present invention, there is provided a disk tray and a guide rail provided on a first surface, a rack gear and a sliding groove provided on a second surface, and a plurality of side walls formed on both sides for seating the disk. A main frame having an upper guide rail, a plurality of frame rails formed on an upper surface thereof, a feeding assay including an optical pickup in the main frame, a gear for transmitting power of a loading motor, a gear tray, and a loading motor to the gear tray; A pulley, a loading assay having a change slide cam for moving the feeding assay up and down according to the power of the gear tray, and a lever ejector, the lever ejector having a tension portion, and a tension stopper capable of supporting the tension portion; There is provided an optical device comprising a main frame.

Another type of the invention is to provide an optical device, characterized in that the tension portion is supported by the tension stopper at the initial moment of attempting to load the disc tray into the loading assay with the disc tray unloaded.

Another type of the present invention is to provide a photonic device, characterized in that the lever ejector further comprises a lever ejector boss, and the tension portion is connected to the lever ejector boss.

Another type of the invention is to provide a photonic device, characterized in that a groove is formed in the front of the main frame to physically move the lever ejector, and a tension stopper is formed in the vicinity of the groove.

Hereinafter, an optical device according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is an exploded perspective view for explaining the operation of the optical device according to a preferred embodiment of the present invention, Figure 2 is a perspective view for explaining the back of the disk tray.

As shown in Figures 1 and 2, the optical device 100 according to a preferred embodiment of the present invention includes a disk tray 110 and a loading assay 120.

The disc tray 110 includes a pair of guide rails 116 formed at both sides, a pair of sliding grooves 118 formed at the rear of the pair of guide rails, a disc seating portion 112 for mounting a disc, and a disc seating portion 112. It includes a disk tray cam 119 formed on the back of the).

In addition, the loading assay 120 is clamped in the main frame 180 and the main frame 180 having a plurality of upper guide rails 122 formed on both side walls and a plurality of frame rails 124 formed on the bottom surface. A feeding assembly 150, a loading motor 129, a gear pulley 127 in which an optical pickup for irradiating a light beam onto the disk for reading information from the disk is slidably installed in a radial direction of the disk. Gear tray 126 and lever ejector 168. The front surface of the main frame 180 further includes a groove 184 installed to forcibly move the lever ejector 168.

When the user pushes the disc tray 110 toward the loading assay 120 in the state where the disc tray 110 is unloaded, the rack gear 114 formed on the back of the disc tray 110 becomes the gear tray 126. Rotate in engagement with the gear formed in the On the other hand, when the gear formed on the lower shaft of the gear tray 126 meshes with the gear formed on the change slide cam 131 and rotates, the change slide cam 131 performs linear reciprocating motion in the main frame 120. At the same time, the vertical movement is performed in the vertical direction so that the disc tray 110 is mounted and the feeding assay 150 is raised, so that the optical pickup can be made horizontal with the disc.

On the other hand, when replacing the disk mounted on the disk seating portion 112 of the disk tray 110, when the eject (eject) button formed in the front end of the main frame 120 is pressed, the loading motor 129 The rotation of the loading motor 129 causes the gear pulley 127 to rotate according to the shaft connected to the loading motor 129, thereby rotating the gear tray 126.

The rotation at this time is in the opposite direction to the case of loading the disc tray 110, so that the gear formed on the lower shaft of the gear tray 126 meshes with the gear protruding from the change slide cam 131 to the opposite direction in the case of loading. Will rotate. Accordingly, the change slide cam 131 is vertically moved in the main frame 120 so that the disc tray 110 is detached and at the same time the feeding assay 150 is lowered.

As described above, while the disc tray 110 is mounted or detached, the guide rails 116 formed on the disc trays are supported along the plurality of upper guide rails 122 formed on both side walls of the main frame 120. This is designed to catch the shaking up and down.

On the other hand, the pair of sliding grooves 118 formed on the back of the disc tray is guided along the plurality of frame rails 124 formed on both sides of the upper surface of the main frame 120, so that the disc tray 110 is guided without shaking from side to side. It became.

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3A and 3B are cross-sectional views illustrating a lever ejector to explain an operation of preventing flow when driving the disc tray of the optical device according to a preferred embodiment of the present invention.

As shown in FIGS. 3A-3B, the lever ejector 168 according to the preferred embodiment of the present invention includes a lever ejector body 162, a lever ejector boss 164, and a tension member 169. do. The lever ejector 168 is a lever ejector body 162 of the lever ejector 168 through a groove formed in the front of the main frame 180 in an emergency in which the disk tray 110 cannot be detached from the loading assay 120 normally. By physically moving the change slide cam 131 serves to move the feeding assay 150 down. Therefore, the disk tray 110 may be forcibly detached by physically moving the lever ejector 168 through the groove formed in the front surface of the main frame 120.

On the other hand, due to the coupling tolerance of the upper guide rail 122 and the plurality of frame rail 124 and the guide rail 116 and the sliding groove 118 formed in the disk tray 110 of the main frame 120, that is, Starting torque is generated in the loading motor 129 during the slot-in or slot-out time between 1.0 and 1.2 seconds, causing the disc tray 110 to shake from 30 msec to 40 msec. Overload occurs by lasting about. However, according to the preferred embodiment of the present invention, the loading motor 129 at the initial moment when the disc tray 110 is to be mounted, the tension unit 169 protruding from the lever ejector boss 164 has the main frame 120. Since it is a state supported by the tension stopper 182 formed in one side surface, a relatively small load is applied compared with the case where the change slide cam 131 of the fluid state conventionally moves.

In addition, according to a preferred embodiment of the present invention, the tension unit 169 is a tension stopper 182 at an initial moment when the disc tray 110 is to be loaded into the loading assay 120 while the disc tray 110 is unloaded. It is characterized by being supported by).

In addition, the tension unit 169 formed in the lever ejector 168 is connected to the lever ejector boss 164, the tension stopper 182 to physically move the lever ejector 168 on the front of the main frame 180. It is formed in the vicinity of the groove formed.

According to a preferred embodiment of the present invention configured as described above, by reducing the scratch on the outer peripheral surface of the disk by improving the shake caused by the initial starting torque of the loading motor for loading the disk tray on which the disk is mounted when detaching the disk tray It works.

In addition, according to a preferred embodiment of the present invention, when operating in the vertical direction to improve the flow of the disc tray to quiet the unstable disc tray operation of the vertical posture, as well as suppress the disc shake in the vertical direction of the disc tray The tray slides stably, thereby preventing the disk from being separated from the disk tray.

In addition, according to a preferred embodiment of the present invention, the product defects due to the initial flow of the disc tray by using a structure in which the lever ejector is simply deformed without the management of the dimensions of the components with a high degree of precision without configuring a separate component There is an effect to reduce.

Although the present invention has been described with reference to the embodiments shown in the drawings, this is in spite of an example, it will be understood by those skilled in the art that various modifications and equivalent other embodiments are possible. Therefore, the true technical protection scope of the present invention should be determined not by the scope of the detailed description but by the appended claims.

Claims (6)

A disk tray including a disk seating portion and a guide rail provided on a first surface for mounting the disk, and a rack gear and a sliding groove provided on the second surface; And A main frame including a plurality of upper guide rails formed on both side walls, a plurality of frame rails formed on an upper surface thereof, a feeding assay including an optical pickup in the main frame, a loading motor, a gear tray, and a power of the loading motor. It includes a gear pulley for transmitting to the gear tray, a loading assay having a change slide cam and a lever ejector for moving the feeding assay up and down in accordance with the power of the gear tray, And the lever ejector has a tension portion, and a tension stopper formed on the main frame to support the tension portion. The method of claim 1, And the tension portion is supported by the tension stopper at an initial moment when the disc tray is to be loaded into a loading assay with the disc tray unloaded. The method of claim 1, The lever ejector further comprises a lever ejector boss, wherein the tension unit is formed in connection with the lever ejector boss. The method of claim 1, Grooves are formed on the front surface of the main frame to physically move the lever ejector, the tension stopper is formed in the vicinity of the grooves. The method of claim 1, The guide rail formed in the disk tray is guided by a plurality of upper guide rails formed on both sides of the main frame. The method of claim 1, And the sliding groove is guided by the plurality of frame rails.

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