KR100828344B1 - Optical disc drive - Google Patents

Abstract

The disclosed optical disc drive includes a housing; A tray which accommodates the disk and is installed to be accessible to the housing; A first connector installed on the main circuit board attached to the housing; And a second connector provided on the sub-circuit board attached to the tray, wherein the first connector and the second connector are electrically separated when the tray is withdrawn from the housing and electrically connected when the tray is withdrawn. According to such a configuration, since the space occupied by the connecting line connecting the main circuit board and the sub circuit board can be reduced, the optical disk drive can be made slim. In addition, disconnection of the connection line due to the repeated detachment of the tray does not occur, thereby improving the durability of the optical disk drive.

Description

Optical disk drive

1 and 2 are plan views showing the trays of the conventional optical disk drive employing the FPC, respectively, withdrawn and withdrawn from the housing;

3 and 4 are a plan view showing a state in which the tray of the optical disk drive according to the present invention is drawn out and retracted with respect to the housing, respectively;

5 is a perspective view for explaining a coupling state of the first connector and the second connector according to an embodiment of the present invention;

FIG. 6 is a plan view illustrating a state in which the first connector and the second connector of FIG. 5 are coupled.

<Description of Symbols for Major Parts of Drawings>

110.Housing 120.Tray

130 Main circuit board 140 Sub circuit board

1st connector 151a ... Guide hole

151b ... Connection pin 152 ... Second connector

Guide pin 152b ... Connection board

160 ... turntable 170 ... spindle motor

180 ... pickup 190 ... limit switch

D ... disk

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical disc drive, and more particularly, to an optical disc drive that newly realizes electrical connection between a main circuit board and a sub circuit board.

In general, an optical disc drive is a device for recording information on or reproducing information by irradiating light onto a disc, which is a recording medium. For this purpose, a recording and reproducing operation is performed by irradiating light on a turntable on which a disc is seated and a recording surface of the disc. Pickup and the like for performing this.

Recently, in the case of notebook personal computers, the optical disk drive itself has been slimmed down with the demand for miniaturization and slimming, and thus the space formed between the tray where the disk is mounted and the housing in which the tray is slidably supported becomes narrower. have. To this end, in the optical disc drive for notebook personal computers, a method of directly installing a turntable or an optical pickup on a tray is generally adopted.

1 and 2 show a conventional optical disk drive in which a turntable, an optical pickup, or the like is directly installed in a tray, and shows a state in which the tray is drawn out and drawn in, respectively, of the housing. Referring to the drawings, the tray 2 includes a turntable 6 on which the disk D is seated, a spindle motor 7 for rotating the turntable at high speed, and a pickup for optically detecting information recorded on the disk D. 8) and the like. In addition, an FPC (Flexible Printed Circuit) 5 that electrically connects between the main circuit board 3 provided in the housing 1 and the sub circuit board 4 provided in the tray 2 is installed in a curved state. The FPC 5 is configured such that the curved portion 5a moves in the housing 1 following the sliding of the tray 2.

However, in such a configuration, the curved portion 5a of the FPC 5 must be sufficiently formed to operate smoothly in accordance with the movement of the tray 2. Therefore, a predetermined or more space must be secured between the housing 1 and the tray 2 in order to form a sufficient curved portion 5a of the FPC 5. As a result, the slimming of the optical disc drive is difficult due to the space occupied by the FPC 5. In addition, the repetitive pull-out and withdrawal of the tray 2 causes the FPC 5 to be disconnected due to excessive cyclic stress applied to the curved portion 5a of the FPC 5.

Therefore, there is a need for an optical disc drive having a new structure capable of electrically connecting the main circuit board 3 and the sub circuit board 4 to each other.

SUMMARY OF THE INVENTION The present invention has been made in view of the above necessity, and an object of the present invention is to provide an optical disk drive that can be slimmed and can easily realize electrical connection between a main circuit board and a sub circuit board without risk of disconnection.

The present invention for achieving the above object, the housing; A tray which accommodates the disk and is installed to be accessible to the housing; A first connector installed on the main circuit board attached to the housing; And a second connector provided on the sub-circuit board attached to the tray, wherein the first connector and the second connector are electrically separated when the tray is drawn out of the housing, and electrically connected when the tray is drawn out. Characterized as possible.

Hereinafter, a preferred embodiment of the optical disk drive according to the present invention will be described in detail with reference to FIGS. 3 to 6.

As shown, in the present invention, the main circuit board 130 is attached to the housing 110, and the first connector 151 is installed on the main circuit board 130. In addition, a sub circuit board 140 is attached to the tray 120 that accommodates the disk D and is installed in and out of the housing, and a second connector 152 is installed on the sub circuit board 140. In addition, the tray 120 has a turntable 160 on which the disk D is seated, a spindle motor 170 for rotating the turntable 160 at high speed, and a recording / reproducing operation by irradiating light onto the recording surface of the disk D. Pickup 180 and the like are installed to perform this. Here, power and signals at the moment when the first connector 151 and the second connector 152 are connected to the main circuit board 130 to achieve a stable electrical connection between the first connector 151 and the second connector 152. It is preferable to install the limit switch 190 to block the.

Meanwhile, as shown in FIGS. 5 and 6, two guide holes 151a are formed to penetrate the edge portions of surfaces facing the second connector 152, respectively. ) And a plurality of connecting pins 151b provided between the guide holes 151a, and the second connectors 152 provided on the sub circuit boards respectively have a tapered shape facing the guide holes 151a. It is preferable to have two guide pins 152a protruding from each other and a plurality of connection plates 152b provided to contact the connection pins 151b and elastically deformable.

Referring to the operation of the optical disk drive according to the present invention configured as described above in detail as follows.

In the optical disk drive of the present invention, the electrical connection between the power source and the signal is required to drive the spindle motor 170 and the pickup 180 installed in the tray 120 and to transmit data reproduced by the pickup 180. To this end, an electrical connection should be made between the main circuit board 130 and the sub circuit board 140 on which the spindle motor 170 and the pickup 180 are installed. However, when the tray 120 is pulled out, power and data transmission are not performed at all, and thus, even if the circuit is electrically disconnected, there is no problem at all, and the tray 120 is inserted into the housing 110 so that the optical disk drive can record and play. The electrical connection is only required if

Therefore, when the tray 120 is withdrawn from the housing 110 as shown in FIG. 3, the first connector 151 and the second connector 152 are separated and electrically disconnected, and the tray 120 is connected to the housing as shown in FIG. 4. When drawn into the 110, the first connector 151 and the second connector 152 are connected by a user pushing the tray 120 into the housing 110.

When the first connector 151 and the second connector 152 are connected, two guide pins 152a protruding from the second connector 152 as shown in FIGS. 5 and 6 are guide pins 152a. Slip along the two guide holes (151a) formed in the first connector 151 to face (). In particular, the guide pin 152a is made in a tapered shape to stably induce contact between the first connector 151 and the second connector 152. In addition, at the same time as the coupling between the guide pin 152a and the guide hole 151a, the plurality of connecting plates 152b provided in the second connector 152 are provided to face the connecting pins 151b of the first connector 151. Contact with Here, since the connecting plate 152b is elastically deformable, the connecting plate 152b causes elastic deformation due to the contact pressure between the connecting pins 151b and the connecting plate 152b. The electrical connection between the first connector 151 and the second connector 152 is stably maintained by the restoring force of 152b.

As a result, since the first connector 151 and the second connector 152 are electrically connected to the main circuit board 130 and the sub circuit board 140, respectively, the first connector 151 and the second connector 152. By the connection of the electrical circuit between the main circuit board 130 and the sub circuit board 140 is made.

However, the structures of the first connector 151 and the second connector 152 shown in FIGS. 5 and 6 are for convenience of description, and the structures of the first connector 151 and the second connector 152 may be changed. The action according to the invention is the same.

As described above, according to the optical disk drive according to the present invention, since the space occupied by the FPC connecting the main circuit board and the sub circuit board can be reduced, the optical disk drive can be made slimmer. In addition, disconnection of the connection line due to the repeated detachment of the tray does not occur, thereby improving the durability of the optical disk drive.

It is to be understood that the invention is not limited to that described above and illustrated in the drawings, and that more modifications and variations are possible within the scope of the following claims.

Claims (3)

A housing; A tray which accommodates the disk and is installed to be accessible to the housing; A first connector installed on the main circuit board attached to the housing; And And a second connector installed on the sub-circuit board attached to the tray, wherein the first connector and the second connector are electrically separated when the tray is drawn out from the housing, and electrically connected when the tray is drawn out. As, And a limit switch installed on the main circuit board to cut off power and signals at the moment when the first connector and the second connector are electrically connected to each other. delete The method of claim 1, One of the first and second connectors includes two guide holes formed through the edges of the surface opposite to the mating connector, and a plurality of connecting pins provided between the guide holes, An optical disk drive comprising: two guide pins each having a tapered shape opposite to the guide hole and a plurality of connection plates elastically deformable to contact the connecting pins.

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