KR101611184B1 - optical disc drive - Google Patents

Abstract

An optical disk drive is described. The optical disc drive includes: a housing; an optical pick-up device which is accommodated in the housing and is mounted on a tray, a tray, and a guide shaft installed on the tray and in which the optical pick-up device is reciprocably mounted.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001]

The present invention relates to an optical disc drive apparatus, and more particularly relates to a structure improvement of a tray and an optical pickup apparatus.

2. Description of the Related Art In general, a slim optical disk drive used in a notebook computer is provided with an optical pickup device in a tray for accommodating a disk, and a main circuit board (PCB) for controlling the optical pickup device, ) Are installed. Such an optical disk drive is limited in design freedom since it must conform to a predetermined standard for compatibility with general notebook computers. According to the conventional structure, an optical pickup device having a separate finished structure is mounted on the tray. Such an optical pickup apparatus has a metal base provided with a guide shaft and a main body mounted on the guide shaft and reciprocating with respect to the base. Structurally, the optical pick-up apparatus is a completed one structure, its structure is complicated, and the base is generally made of a metal plate.

The present invention provides an optical disk drive capable of shortening the manufacturing process steps and reducing the manufacturing cost by reducing the number of parts.

According to the present invention,

housing;

A tray received in the housing;

An optical pickup device mounted on the tray;

A guide shaft installed directly on the tray so that the optical pickup device can be reciprocated;

A spindle motor for driving the optical disc;

A motor base directly fixed to the tray by mounting the spindle motor;

And

A support post installed on the tray for supporting the guide shaft; An optical disc drive is provided.

According to an embodiment of the present invention, the tray is provided with an optical pick-up device transfer device mounted on the guide shaft.

According to another embodiment of the present invention, a support post for supporting the guide shaft integrally protrudes from the tray.

According to another embodiment of the present invention, the tray is provided with a main circuit board (PCB) connected to the optical pickup device, and the housing is electrically connected to the circuit board, .

According to another embodiment of the present invention, a spindle motor for driving an optical disk is mounted on the tray. According to a specific embodiment, the base of the spindle motor can be integrally coupled to the tray, and furthermore, the base of the spindle motor forms a single body with the tray.

The optical disc drive according to the present invention has a structure in which a guide shaft for guiding the movement of the optical pickup device is provided in the tray itself and the optical pickup device is directly mounted on the tray. Therefore, the manufacturing cost can be reduced by reducing the number of parts and shortening the manufacturing process steps.

1 is a schematic perspective view of an optical disc drive according to an embodiment of the present invention.
2 shows a planar structure of a tray for an optical disk drive according to an embodiment of the present invention.
FIG. 3 shows a schematic cross-sectional structure of a spindle motor constructed directly on a tray in an optical disk drive according to an embodiment of the present invention.
4 is a perspective view showing the structure of a guide shaft and a support poster for supporting the guide shaft in the optical disc drive tray according to an embodiment of the present invention.
5A and 5B illustrate a support poster for supporting a guide shaft in an optical disc drive tray according to an embodiment of the present invention.
6 illustrates an arrangement of a main PCB mounted on a bottom surface of a tray in an optical disc drive according to an embodiment of the present invention.
7 is a schematic block diagram of a main PCB applied to an optical disc drive according to an embodiment of the present invention.

Hereinafter, embodiments of the optical disc drive according to the present invention will be described in detail with reference to the accompanying drawings.

1 is an external perspective view of an optical disc drive.

Referring to FIG. 1, a tray 20 is coupled to a housing 10 having a base 10a and a lid 10b so that the tray 20 can be put in and out. A spindle motor 30 and an optical pickup device 40 are mounted on the tray 20 to mount the disc 1 thereon. Here, the optical pick-up device 40 is provided on two guide shafts 50, 50 which are fixed in parallel to the tray 20. The optical pickup device 40 includes an objective lens 41 and an actuator (not shown) for driving the objective lens 41. The optical pickup device 40 includes a guide portion 42 on both sides thereof for sliding movement relative to the shaft 50. On the other hand, a feed motor 60 having a screw 61 for reciprocating the optical pick-up device 40 is provided. The screw 61 is engaged with the screw coupling part 61 coupled to the optical pickup device 40 and thus the optical pickup device 40 is driven by the guide shaft 50, and 50, respectively.

For a more detailed understanding of the structure of the optical disc drive, refer to FIG.

The tray 20 provides a space portion 22 in which the optical pickup device 40 is installed and movable. Shafts (50) are arranged side by side on both sides of the space portion (22). Each of the two shafts 50 is supported at both ends thereof by support posts 23, 24 provided on the tray 20. These support posts 23 and 24 may be integrally formed on the tray 20. [ Both ends of the optical pickup device 40 are supported by a guide shaft 50 by a guide portion 42 and a screw coupling portion 62 fitted to the screw 61 of the feed motor 60 is provided on one side have.

A motor base 21 having the function of the base of the spindle motor 30 is provided at one side of the space portion 22 of the tray 20. The motor base 21 is a part of the tray 20 and a shaft support portion 35 having a bearing (not shown) for supporting the rotation shaft 33 of the spindle motor is fixed to this portion. A magnetic coil part 34 as a stator is fixed to an upper end of the shaft support part 35 and a permanent magnet 32 is provided inside a rotor 31 on which a disk (not shown) is mounted. This structure removes the motor base separately provided by the conventional spindle motor and uses a part of the tray as a motor base. Therefore, the spindle motor having such a structure is mounted on a part of the tray 20, thereby having a structure as a complete motor.

4 shows the optical disc drive according to the present invention in a state where the support posts 23 and 24 for supporting the guide shaft 50 are fixed.

Support posts (23, 24) are provided on one side of the bottom surface of the tray (20) and at one side of the motor base (21), at which both ends of the shaft (50) are supported. The one side support post 24 has a through hole 24a through which one end of the shaft 50 is inserted (see FIG. 5A), and the other side support post 23 is inserted into the saddle type insertion groove A separate supporting member 25 for preventing the shaft 50 from coming off and a screw 26 for fixing the supporting member 25 can be coupled to the shaft portion 23a.

6 shows the bottom surface of the tray 20 in which the optical pickup device and the guide shaft are omitted in the optical disc drive according to the present invention.

According to an aspect of the present invention, a main circuit board 70 of the optical disc drive is provided on the bottom surface of the tray 20. The main circuit board 70 may include a high-frequency amplifier (RF amplifier), a servo circuit, an interface, and the like as so-called front end parts. FIG. 7 shows an example of a schematic block diagram of the main circuit board. Reference numeral 71 denotes an output interface connector. Reference numeral 73 denotes a connector connected to the optical pickup device. Numerals 72 and 74 denote chip sets such as a microcomputer. Numeral 75 denotes a connector connected to a spindle motor or the like.

The front-end system 3 includes an RF amplifier (a) for amplifying a signal from the optical pickup device 40, a servo unit (not shown) for controlling the tracking and focusing mechanism of the optical pickup device 40, (b) and a system control unit (c) for controlling them. As is well known, in the front-end system, a current / voltage amplifier may be provided in front of the RF amplifier. The RF amplifier amplifies the high-frequency signal by the final amplified signal (data) And outputs it to a notebook computer.

When the main circuit board is mounted on the bottom surface of the tray 20, a conventional interface device is not required in the housing, and an interface connector, for example, a sata connector, may be provided.

According to the present invention, since the optical pick-up device is directly mounted on the tray itself, it is possible to reduce the manufacturing cost of the optical pickup device and shorten the process steps. In particular, since the optical pickup device is mounted on the tray without a separate base, the utilization of the internal space is increased by the existing thickness of the base.

Further, by attaching the spindle motor, which has been manufactured as an independent component, to the tray itself, it is also possible to obtain the benefits of the above-described reduction in the number of parts.

Further, since the main PCB is mounted on the tray itself, the distance between the optical pick-up device and the main PCB is shortened, so that signal loss between the optical pickup device and the main circuit board can be suppressed.

10: Housing
10a: housing base
10b: cover
20: Tray
30: Spindle motor
40: Optical pickup device (main body)
50: Guide shaft
60: Feed motor
61: Feed screw

Claims (15)

housing;
A tray which is housed in the housing and on which the optical disk is mounted;
An optical pickup device mounted on the tray;
A guide shaft installed directly on the tray so that the optical pickup device can be reciprocated;
A spindle motor for driving the optical disc;
A motor base directly fixed to the tray on which the optical disc is mounted, to which the spindle motor is mounted; And
A support post directly mounted on the tray, the support post supporting the guide shaft; And,
Wherein the guide shaft and the motor are directly installed by the support post and the motor base directly installed on the tray. The method according to claim 1,
And an optical pickup device feeding device mounted on the guide shaft is installed in the tray. 3. The method according to claim 1 or 2,
Wherein the support post is integrally protruded from the tray. The method of claim 3,
And a main circuit board (PCB) connected to the optical pickup device is mounted on the tray. 5. The method of claim 4,
Wherein the housing is electrically connected to a circuit board mounted on the tray and is provided with a connector for connection with an external device. 3. The method according to claim 1 or 2,
And a main circuit board (PCB) connected to the optical pickup device is mounted on the tray. The method according to claim 6,
Wherein the housing is electrically connected to a circuit board mounted on the tray and is provided with a connector for connection with an external device. housing;
A tray which is housed in the housing and on which the optical disk is mounted;
An optical pickup device mounted on the tray;
A guide shaft installed in the tray so that the optical pickup device can be reciprocated; And
A support post directly mounted on the tray for supporting the guide shaft;
A spindle motor for driving the optical disc;
Wherein the spindle motor is directly fixed to the tray by mounting the spindle motor,
Wherein the guide shaft and the motor are directly installed on the tray by the support post and the motor base. 9. The method of claim 8,
Wherein the support post is integrally protruded from the tray. 10. The method according to claim 8 or 9,
And a main circuit board (PCB) connected to the optical pickup device is mounted on the tray. 11. The method of claim 10,
Wherein the housing is electrically connected to a circuit board mounted on the tray and is provided with a connector for connection with an external device. A housing including a base and a cover over the base;
A tray on which an optical disk is mounted, the tray being housed in a lid on a housing;
An optical pickup device mounted on the tray;
A guide shaft installed in the tray so that the optical pickup device can be reciprocated;
A support post directly mounted on the tray for supporting the guide shaft;
A spindle motor for driving the optical disc;
And a motor base directly fixed to the tray on which the optical disk is mounted, to which the spindle motor is mounted,
Wherein the guide shaft and the motor are directly installed on the tray by the support post and the motor base. 13. The method of claim 12,
Wherein the support post is integrally protruded from the tray. The method according to claim 12 or 13,
And a main circuit board (PCB) connected to the optical pickup device is mounted on the tray. 15. The method of claim 14,
Wherein the housing is electrically connected to a main circuit board mounted on the tray, and a connector for connection to an external device is provided.

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