KR20060114257A - Optical disc player with integrated main chassis and drive unit - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical disc player in which a main chassis and a drive unit are integrated, wherein a gear cam 50 (shown in FIG. 1) installed in the main chassis 110 drives the loading motor 20 (shown in FIG. 1). In an optical disc player provided with a drive unit 40 (shown in FIG. 1) that moves up and down as it moves by, the base plate 120 of the drive unit 40 (shown in FIG. 1) in the main chassis 110. One side of the base plate 120 is integrally connected to the other side of the base plate 120 to form a free end 121 that can be moved up and down adjacent to the gear cam 50 (shown in Figure 1), the free end ( 121, the guide protrusion 122 formed at the end is coupled to the guide portion 52 (shown in FIG. 2) which is formed to be inclined to the gear cam 50 (shown in FIG. 1) so that the left and right sides of the gear cam 50 (shown in FIG. Move the drive unit 40 (shown in FIG. 1) to the disk surface as it moves. Load / unload with. Accordingly, the present invention provides for the coupling of the drive unit base plate and the main chassis by forming the base plate of the drive unit integrally with the main chassis for loading / unloading the turntable and pickup unit onto the disc surface for playing or recording the disc. By eliminating the parts used to lower the manufacturing cost, and has an effect of improving the productivity by simplifying the assembly process.

Description

Optical disc player which unites main chassis and drive unit {OPTICAL DISC PLAYER HAVING A MAIN CHASSIS AND A DRIVE UNIT IN A BODY}

1 is an exploded perspective view showing the main part of an optical disc player according to the prior art,

2 is a rear view showing the gear cam of the optical disc player according to the prior art,

3 is a plan view showing the main parts of an optical disc player according to the present invention;

4 is a cross-sectional view taken along line AA ′ of FIG. 3.

<Description of Symbols for Main Parts of Drawings>

110: main chassis 111: opening

112: sliding groove 120: base plate

121: free end 122: guide protrusion

123: buffer

The present invention relates to an optical disk player in which the main chassis and the drive unit are integrated. More specifically, the main chassis simplifies the assembly process while omitting the parts used for coupling the base plate and the main chassis of the drive unit. And an optical disc player in which the drive unit is integrated.

Optical discs, which are optical data recording media, include digital audio discs (DADs) and digital video discs (DVDs) for playing music, commonly referred to as CDs. The optical disk reflects the laser beam scanned from the pick-up unit which is clamped to the turntable rotated by the spindle motor and moves along the radial direction of the optical disk so that the reflectance of the beam reflected by the pickup unit or the beam at the time of reflection is reflected. Read data through phase or polarization change of.

An optical disc player for reproducing or recording an optical disc raises the turntable and the pickup unit to the disc for reproduction or recording of the disc inserted through the tray, which will be described below with reference to the accompanying drawings.

1 is an exploded perspective view showing the main portion of an optical disc player according to the prior art. As shown in the figure, the tray 10 on which the disc seating portion 11 is formed and the rack 10 is formed on the upper surface of the loading motor 20 is formed. Drive unit is screwed with the gear 22 that rotates through the rotary belt 21 by the drive to move backward by the driving of the loading motor 20 to install a disk (not shown) inside the main chassis 30 40 is located above.

The drive unit 40 is provided with a turntable 41 on the base plate 43 and a pickup unit 42 which is slidably coupled to a pair of side guide shafts 44.

When a disk (not shown) is positioned above the drive unit 40, the gear cam 50 installed to reciprocate left and right on the main chassis 30 receives a rotational force of the loading motor 20 and moves to one side. The unit 40 raises the holder 60 fixed via the plurality of dampers 62 so that the disk is placed on the turntable 41 installed on the drive unit 40 and at the same time the pickup unit 42 is located below the disk. Is adjacent.

As shown in FIGS. 1 and 2, the gear cam 50 is mounted in a sliding groove 31 formed in the left and right directions in the main chassis 30 and receives a rotational force from the loading motor 20. ) And a rack 51 to be engaged with the gear is formed on one side, a pair of guide portion 52 is formed is inserted into each of the pair of guide projections 61 formed on the front of the holder (60). In addition, the guide part 52 is formed to be inclined to guide the guide protrusion 61 up and down by the left and right movement of the gear cam 50.

The gear cam 50 of the conventional optical disk player is a sliding groove 31 of the main chassis 30 by a rack 51 geared with a gear 22 that rotates by driving the loading motor 30. Guides the guide protrusion 61 of the holder 60 inserted into the guide part 52 up and down when sliding left and right along the side to move the drive unit 40 fixed to the holder 60 up and down, The turntable 41 and the pick-up unit 42 are loaded / unloaded on the disk surface loaded with 10).

However, the optical disc player according to the related art includes a holder 60, a damper 62, etc. for moving the base plate 41 up and down to load / unload the drive unit 40 onto the disc surface. By requiring a coupling means such as a screw for coupling them to each other, the number of parts is increased to increase the manufacturing cost, there is a problem that the assembly is complicated to reduce the productivity.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and an object of the present invention is to integrate a base plate of a drive unit with a main chassis which loads / unloads a turntable and a pickup unit onto a disc surface for reproducing or recording a disc. The optical disc player is integrated with the main chassis and the drive unit to reduce the manufacturing cost by eliminating the parts used for the base plate of the drive unit and the main chassis, thereby simplifying the assembly process to improve productivity. .

The present invention for achieving the above object is an optical disk player having a drive unit that moves up and down as the gear cam installed in the main chassis moves by the driving of the loading motor, the base of the drive unit in the main chassis Since one side of the plate is integrally connected, the other side of the base plate forms a free end that can move up and down adjacent to the gear cam, and the guide protrusion formed at the free end of the base plate is coupled to the guide part which is inclined to the gear cam. According to the left and right movement of the gear cam is characterized in that the drive unit is loaded / unloaded to the disk surface.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention.

3 is a plan view showing the main parts of an optical disc player according to the present invention. As shown, in the optical disc player in which the main chassis and the drive unit are integrated, one side of the base plate 120 of the drive unit 40 (shown in FIG. 1) is integrally formed in the main chassis 110. As a result, the other side of the base plate 120 forms a free end.

The main chassis 110 forms an opening 111 so that the base plate 120 of the drive unit 40 (shown in FIG. 1) is located inside, and the loading motor 20 (FIG. 1) is located at one side of the opening 111. Sliding groove 112 is installed to the gear cam 50 (shown in FIG. 1) to be moved to the left and right by receiving the rotational movement of the rotation) is formed, the base plate 120 integrally formed inside the opening 111 ) Is located, one side of the base plate 120 is integrally connected, and the other side of the base plate 120 is formed adjacent to the gear cam 50 (shown in Figure 1) to form a free end 121 that can be moved up and down do.

The main chassis 110 is formed of a material such as a synthetic resin that can be bent so that the free end 121 of the base plate 120 can be moved up and down, and also in a conventional press to reduce the manufacturing cost. Designed as mold water.

The base plate 120 of the drive unit 40 (shown in FIG. 1) is provided with a turntable 41 (shown in FIG. 1) on an upper side thereof, and a pair of guide shafts 44 arranged side by side in the radial direction of the disk. 1, the pickup unit 42 (shown in FIG. 1) is slidably coupled.

The base plate 120 is provided with a shock absorbing portion 123 which is bent to absorb vibrations generated by the main chassis 110 or itself at the connection portion with the main chassis 110.

The buffer unit 123 is formed in various shapes bent, and in the present embodiment of FIG. Therefore, the shock absorbing portion 123 absorbs the vibration applied by both sides of the "U" -shaped center from being able to be pinched and unfolded.

The base plate 120 has at least one guide end 122 formed on at least one end of the free end 121.

Guide protrusions 122 are respectively coupled to a pair of guide portions 52 (shown in FIG. 2) which are formed to be inclined to the gear cam 50 (shown in FIG. 1). Accordingly, the drive unit 40 (shown in FIG. 1) is loaded / unloaded onto the disk surface when the gear cam 50 moves left and right.

The operation of the optical disc player in which the main chassis and the drive unit having such a structure are integrated is performed as follows.

When a disc (not shown) is loaded above the drive unit 40 (shown in FIG. 1), a gear cam 50 (shown in FIG. 1), which receives the rotational force of the loading motor 20 in a linear motion, is one side. As the guide protrusions 122 guided by the guide portion 52 are raised as they move, the disc is driven by loading the drive unit 40 (shown in FIG. 1) onto the loaded disc surface. And a pick-up unit 42 (shown in FIG. 1) adjacent to the lower side of the disc. Further, when the gear cam 50 (shown in FIG. 1) moves in the opposite direction, the guide protrusion 122 guided by the guide portion 52 descends to free the drive unit 40 (shown in FIG. 1) from the disk surface. Loading causes the disc to be spaced apart from the turntable 41 (shown in FIG. 1) and the pickup unit 42 (shown in FIG. 1).

On the other hand, the "Ｕ" shaped buffer portion 123 formed at the connection portion between the main chassis 110 and the base plate 120 of the drive unit 40 (shown in FIG. 1) is the deformation of the gap between both sides with respect to the center. This allows absorption of vibrations applied from the main chassis 110 to the drive unit 40 (shown in FIG. 1) or from the drive unit 40 (shown in FIG. 1) to the main chassis 110, thereby allowing the player to Ensure stable operation.

According to the preferred embodiment of the present invention as described above, the base plate of the drive unit by integrally forming the base plate of the drive unit for loading / unloading the turntable and the pickup unit to the disc surface for reproduction or recording of the disc integrally with the main chassis Reduced manufacturing costs by omitting the components used for the assembly of the main chassis and the productivity by simplifying the assembly process. In particular, the optical disc player in which the main chassis and the drive unit are integrated in accordance with the present invention is more effective for a DVD player with a margin of design accuracy, and thus, the mold base of the base plate integrally with the main chassis. The conventional skew adjustment can be omitted through the component tolerance management of the component.

As described above, the optical disc player in which the main chassis and the drive unit are integrated according to the present invention has a base plate of the drive unit which loads / unloads the turntable and the pickup unit onto the disc surface for reproducing or recording the disc. By forming integrally with the main chassis, the components used for coupling the base plate of the drive unit and the main chassis are omitted, thereby lowering manufacturing costs and simplifying the assembly process, thereby improving productivity.

What has been described above is only one embodiment for implementing an optical disc player in which the main chassis and the drive unit are integrated according to the present invention, and the present invention is not limited to the above-described embodiment, and the claims As claimed, any person having ordinary skill in the art without departing from the gist of the present invention will have the technical spirit of the present invention to the extent that various modifications can be made.

Claims (3)

In the optical disc player provided with a drive unit that moves up and down as the gear cam installed in the main chassis moves by the driving of the loading motor, One side of the base plate of the drive unit is integrally connected to the main chassis to form a free end that allows the other side of the base plate to move up and down adjacent to the gear cam, The guide protrusion formed at the free end of the base plate is coupled to the guide portion which is formed to be inclined to the gear cam, so that the main chassis and the drive unit which load / unload the drive unit to the disk surface in accordance with the left and right movement of the gear cam are provided. An integral optical disc player. The method of claim 1, The base plate, A buffer part bent to absorb vibrations is formed at a connection part with the main chassis. An optical disc player in which the main chassis and the drive unit are integrated. The method of claim 2, The buffer part Formed in the shape of a "Ｕ" An optical disc player in which the main chassis and the drive unit are integrated.

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