KR20060098591A - Optical disc player apparatus comprising a support means for optical pick-up unit - Google Patents

Abstract

The present invention relates to an optical disc player apparatus including a tray assembly, and more particularly, to an optical disc player having a structure capable of stably supporting an optical pickup unit in a tray assembly drawn out to the outside. To this end, the optical disk player device according to the present invention is coupled to the inner housing and engaged with one of the pair of support pieces and the support piece to perform the rotary motion to rotate the lower part of the optical pickup unit (the lower part of the spindle motor) Disclosed is a structure of an optical disc player device comprising an optical pickup unit support means composed of a locking lever capable of directly supporting a disc), and through this structural feature, even when the optical disc is mounted by the tray assembly being pulled out from the inner housing The lower part of the unit (specifically, the spindle motor) Can be supported by the enemy, it is possible to solve the problems of access that may occur due to incomplete mounting error by binding of the optical disc is performed reliably through it.

Tray assembly, optical pickup unit, locking lever, support piece, optical pickup unit support means, optical disc player device

Description

Optical disc player apparatus comprising a support means for optical pick-up unit

1 is a plan view showing an example of a conventional optical disc player device;

2 is a plan view showing a tray assembly withdrawn in the optical disk player device according to an embodiment of the present invention;

3 is a plan view showing a tray assembly accommodated in an inner housing in the optical disc player device of FIG. 2;

4 is an exploded perspective view showing the optical disc player of FIG. 2; And

5 and 6 are assembled perspective views showing the main portion of the optical pickup unit support means according to the present invention.

<Description of Symbols for Main Parts of Drawings>

100: optical disc player device

10: case 20: tray

30: moving unit 40: moving drive means

50: turntable 60: optical pickup unit

200: optical disc player device

110 tray assembly 110a, 110b protrusions

112: upper case 114: lower case

114a, 214b: Slot 116: Elastic Body

116a: through hole 118a, 118b, 118c: coupling pin

120: turntable 130: optical pickup unit

132: optical pickup 134: slot

136: guide 138a, 138b, 138c: protrusion

140: optical pickup unit support means 142a, 142b: support piece

144a, 144b, 144c: driving pin 146a, 146b: support pin

148: locking lever 148a: one end of the locking lever

148b: other end of locking lever 148c: hinge pin

150: inner housing 152: front

154: Bottom surface 154a, 154b, 154c: Slot

156, 158: side 156a, 158a: long groove

160: rear 170: tray drive means

172: drive motor 174: rack

176: gear train 180: circuit board

182: opening

Prior Art 1:

Japanese Laid-Open Patent Publication No. 2003-141862

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical disc play apparatus comprising a tray assembly, and more particularly to an optical pick-up unit in a tray assembly which is drawn out for disc mounting. An optical disk player device having a structure that can be stably supported.

In general, an optical disc player device is used to read information recorded on an optical disc such as a compact disc (CD) or a digital versatile disc (DVD), or to record information on an optical disc. Such an optical disc player device is an optical disc. The slot method and the tray method can be divided according to the mounting method.

The slot-type optical disc player device is mounted by inserting an optical disc through a slot formed in the front of the device, and the tray-type optical disc player device is mounted by placing the optical disc on a tray drawn out to the front of the device and then retreating into the device to mount the optical disc. That's the way.

The present invention relates to a tray-type optical disc player device, and more particularly to an optical disc player device including a tray assembly, characterized in that the optical pickup is built in a tray drawn out to the front of the device.

A conventional example of an optical disc player device including a tray assembly is shown in FIG. Fig. 1 relates to an optical disc player device 100 applied to an automobile and the like, and is a view shown in relation to the invention of Japanese Patent Application Laid-Open No. 2003-16148 (Sony Corporation; published May 16, 2003).

Referring to FIG. 1, a conventional optical disc player device 100 drives a case 10, a tray 20 on which an optical disc is mounted, a moving unit 30 which pulls out / retracts a tray with respect to the case, and a moving unit. And a moving drive means 40, wherein the tray 20 is reciprocally driven based on the turntable 50 for rotating the optical disk and the optical pickup unit 60 for recording information on the optical disk or reproducing the information of the optical disk. It includes.

According to this conventional example, the optical pickup unit has a shaft protruding in the base of the tray 20 to protect the unit itself from external impact, and the optical pickup unit 60 having a damper of an elastic material corresponding to the shaft. The optical pickup unit is coupled to the tray in such a manner that the damper is fitted to the shaft, so that the damper absorbs external shocks, thereby protecting the optical pickup unit.

However, according to the conventional configuration, when a pressure is applied to the turntable to mount the optical disk while the tray is drawn out, a damper acts to cause the optical pickup unit to flow so that the optical disk cannot be mounted on the turntable correctly. . In other words, the damper is configured to prevent the impact from the outside rather the problem that acts as a disadvantage in mounting the optical disk.

As such, when the optical disc is executed after the tray is inserted into the case while the optical disc is not completely mounted by the flow of the optical pickup unit, an error may occur during an operation such as the reproduction of the optical disc.

An object of the present invention is to provide an optical disc player apparatus having a structure in which an optical pickup unit can be stably supported when mounting an optical disc in a state where a tray is pulled out.

The present invention also provides a support means for stably supporting the optical pickup unit.

To this end, the present invention includes an optical pickup unit equipped with a turntable on which an optical disc is mounted, a spindle motor for rotating the turntable, and an optical pickup for performing reproduction and / or recording on an optical disc mounted and reciprocally driven in a direction toward the turntable. A tray assembly comprising an upper and lower case housing the spindle motor and the optical pickup unit; An inner housing defining a space in which the tray assembly can be accommodated, the front housing being opened; And tray driving means connected to each of the tray assembly and the inner housing, the tray driving means driving the tray assembly to be received in the inner housing or to be drawn out through the open front surface of the housing. The optical disk player apparatus further comprises an optical pickup unit support means for preventing the flow of the optical pickup unit by supporting the optical pickup unit.

In the present invention, the optical pickup unit support means includes a pair of support pieces coupled to the inner housing and driven in a scissors manner, and a lock lever whose center is coupled to the lower case and engaged with one of the support pieces to rotate, the tray When the assembly is pulled out, the locking lever rotates to support the lower portion of the optical pickup unit, so that the flow of the optical pickup unit is prevented.

In addition, in the present invention, the locking lever is a bar-shaped lever in close contact with the surface of the lower case, the center is cocked to the lower case to serve as a hinge, it is characterized in that it rotates in engagement with the drive of the support piece.

Further, in the present invention, one end of the locking lever is engaged with one of the support pieces, and the other end of the locking lever is partially bent and formed to be high with a predetermined height difference, and the other end is rotated when the tray assembly is pulled out. It is characterized in that the optical pickup unit is strongly supported by being pushed into the lower part of the spindle motor.

Further, in the present invention, the lower case is formed with a plurality of coupling pins protruding vertically upward, protrusions corresponding to the coupling pins are formed on the side of the optical pickup unit, the coupling pins are fitted to the projections optical pickup The unit is fixed with respect to the lower case.

In addition, in the present invention, each of the protrusions is characterized in that the through-hole is formed with an elastic body, the coupling pin is correspondingly fitted in the through-hole, the optical pickup unit is elastically supported with respect to the lower case.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

2 and 3 are plan views of an optical disc player device according to an embodiment of the present invention, and FIG. 4 is an exploded perspective view. In particular, FIG. 2 shows the tray assembly withdrawn and FIG. 3 shows the tray assembly accommodated in the inner housing, respectively.

The optical disc player device 200 according to an exemplary embodiment of the present invention is a tray type device, which includes a tray assembly 110 including a turntable 120 and an optical pickup unit 130, and a space in which the tray assembly can be accommodated. The inner housing 150 and the tray driving means 170 capable of withdrawing or accommodating the tray assembly from the inner housing may be largely divided.

As shown in FIG. 2, the tray assembly 110 is drawn out through the open front surface 152 of the inner housing 150 by the tray driving means 170.

Hereinafter, the optical disc player 200 according to the embodiment of the present invention will be described in detail.

The tray assembly 110 includes an optical pickup unit 130 having a turntable 120, a spindle motor 122 for rotating the turntable, an optical pickup 132 reciprocally driven with respect to the turntable 120, and an optical And optical pickup driving means (not shown) for reciprocating the pickup 132. In addition, the tray assembly 110 exposes the turntable and the upper case 112 forming the mounting surface of the optical disk mounted on the turntable and the lower case combined with the upper case to form a space for accommodating the optical pickup unit 130 ( 114).

In this case, the optical pickup unit 130 included in the tray assembly 110 is configured such that the optical pickup 132 reciprocates in a direction opposite to the extraction direction of the tray assembly 110 with respect to the turntable 120. That is, the optical pickup 132 including an object lens is reciprocated in a direction from the turntable toward the inner housing, so that the slot 134 to which the optical pickup 132 is exposed is also rearward from the turntable 120. The tray assembly is received).

The inner housing 150 forming a space in which the tray assembly 110 is accommodated includes a bottom surface 154, a pair of side surfaces 156 and 158 formed vertically on both sides of the bottom surface, and a pair of side surfaces. It is composed of a rear surface 160 connected from the rear side. The front surface 152 is opened as a passage through which the tray assembly is reciprocated, and the upper portion may be configured as needed. In addition, the inner housing 150 may be manufactured by bending and cutting the thin plate, and may be manufactured by fitting the separated thin plate and fixing it with screws or the like as necessary.

The inner housing 150 may be inserted and mounted through a predetermined opening formed in a front panel of an automobile.

 On the other hand, the following tools can be used to adjust the extent to which the tray assembly 110 is drawn out to the maximum. For example, the long grooves 156a formed along the drawing direction on both sides 156 and 158 of the inner housing 150 are formed with projections 110a extending horizontally to both sides of the tray assembly 110. , 158a is formed, and the protrusions are slid after being fitted into the long grooves 156a and 158a corresponding to the protrusions 110a, respectively, to guide the reciprocating driving of the tray assembly.

In addition, the protrusions 110a may be slightly moved forward (not shown), or additional protrusions 110b may be formed at predetermined intervals from the protrusions 110a, and then the protrusions 110a, The tray assembly 110 may be reciprocally driven in the inner housing 150 by a predetermined interval by guiding the reciprocating driving of the tray assembly using 110b).

The tray driving means 170 for reciprocating the tray assembly 110 in the inner housing 150 includes a predetermined gear train 176 connected to the drive motor 172 and the drive motor 172, and a rack formed corresponding thereto. 174 can be formed. The drive motor 172 and the rack 174, which includes a predetermined gear train 176, have one of them (e.g., a drive motor) in one of the tray assembly 110 and the inner housing 150 (e.g., the tray assembly). ) And the other (eg, rack) to be formed in the other (inner housing), thereby reciprocating the tray assembly 110 in the inner housing 150. The combination of the drive motor and the rack may be configured in various ways in consideration of the manufacturing process and operational efficiency. In addition, it is noted that the tray driving means for reciprocating the tray assembly is not limited to the present embodiment, and may be configured through various forms and methods.

 The tray assembly 110 includes a turntable 120 and an optical pickup unit 130 in a space formed by the upper case 112 and the lower case 114. According to the present invention, the optical pickup unit 130 is formed with an arc-shaped guide 136 protruding upward so that the turntable 120 is formed on one side and guides the optical disk when the optical disk is mounted on the other side. The slot 134 of the optical pickup unit 130 is formed in a section connecting the turntable 120 and the guide 136.

In addition, the optical pickup unit 130 is formed with a plurality of protrusions 138a, 138b, and 138c protruding horizontally along the outer circumference, and the elastic body 116 having the through hole 116a formed therein is formed in these protrusions. do. The protrusions 138a, 138b, and 138c of the optical pickup unit 130 are connected to the coupling pins 118a, 118b, and 118c that protrude vertically corresponding to the protrusions of the optical pickup unit 130 in the lower case 114. By combining, the optical pickup unit 130 may be stably supported and coupled within the tray assembly 110.

The turntable 120 is configured to rotate by the operation of the spindle motor 122, and the optical pickup 132 reciprocally driven around the turntable is driven by the optical pickup driving means (not shown). The optical pickup drive means may include a drive motor attached to one side of the optical pickup unit, a lead bar having a drive motor and a screw thread rotating through a predetermined gear train, and an auxiliary bar formed parallel to the lead bar. Both sides of the lead bar and the auxiliary bar may support-drive the optical pickup.

Note that such an optical pickup driving means is configured for convenience of description of the present invention and may be freely configured within the scope of implementing the features of the present invention.

In the tray assembly 110, a circuit board 180 having a circuit for controlling the spindle motor 122 and the optical pickup driving means is formed. As shown in FIG. 4, an opening 182 having a predetermined shape is formed in a central portion of the circuit board 180 corresponding to the lower portion of the spindle motor 122.

According to a feature of the invention, the optical pick-up unit 130 can be stably supported by the optical pick-up unit support means 140, especially when the tray assembly is pulled out, particularly when the optical disc is to be mounted onto the turntable. The optical pick-up unit support means 140 is largely divided and driven in engagement with a pair of support pieces 142a and 142b driven through caulking to the inner housing 150 and one of the pair of support pieces (for example, 142a). It includes a locking lever 148 bar-shaped is driven hinged to the lower case.

The optical pickup unit support means 140 is driven by three pins 154a, 154b, and 154c formed in the bottom surface 154 of the inner housing 150 to be driven along the slots to drive the driving pins 144a, 144b, 144c and a pair of support pieces 142a, 142b coupled in a sheared manner by one of the drive pins 144c. Drive pins 144a and 144b are fitted to one end of each of the pair of support pieces 142a and 142b by being fitted into the slots 154a and 154b of the bottom surface 154, and the tray assembly 110 is provided at the other end of each support piece. Support pins 146a and 146b are formed to be coupled to the slots 114a and 114b formed in the lower case 114.

In addition, the support pin 146b formed at the other end of one of the support pieces 142b is fitted into the slot 114b of the corresponding lower case and is coupled to one end 148a of the locking lever 148. The locking lever 148 has a hinge pin 148c which is hinged and hinged with the lower case 114 at the center thereof, and one end 148a of the locking lever is engaged with one of the supporting pieces 142b and the other end 148b. ) May be rotated to the lower portion of the optical pickup unit 130 through the opening 182 of the circuit board 180 in the bent upward state. In this case, the opening 182 of the circuit board 180 should be formed as an area including a range in which the other end 148b of the locking lever 148 rotates through the hinge pin 148c.

The lock lever 148 does not contact the optical pickup unit 130 when the tray assembly 110 is accommodated in the inner housing 150, and the optical pickup unit 130 when the tray assembly 110 is withdrawn from the inner housing. It is configured to stably support the optical pickup unit 130 in contact with the lower portion.

The optical pickup unit driving means 140 will be described in detail with reference to FIGS. 5 and 6 as follows. FIG. 5 illustrates a state in which the other end 148b of the locking lever 148 directly supports the spindle motor 122 of the optical pickup unit 130, and FIG. 6 illustrates that the locking lever 148 rotates to optical pickup. It shows a state separated from the unit 130.

5 shows the state of the optical pickup unit support means 140, for example, with the tray assembly withdrawn from the inner housing, with the other end 148b of the locking lever 148 directly directing the lower portion of the spindle motor 122. As shown in FIG. The state in which the optical pickup unit is stably supported by supporting it is shown.

A pair of support pieces 142a and 142b are driven in a scissor manner along slots 154a, 154b and 154c formed in the bottom surface of the inner housing so that the support pins 146a and 146b approach each other. Accordingly, one end 148a engaged with the support pin 146b of one support piece 142b rotates about the hinge pin 148c, so that the other end 148b rotates downwardly of the spindle motor 122. .

In this way, since the lower part of the optical pickup unit, in particular the lower part of the spindle motor, is directly supported by the other end of the locking lever in the state where the tray assembly is pulled out, the pressure applied to the optical pickup unit when the optical disk is mounted is supported by the locking lever. Is offset by the user, and the user can completely mount the optical disk to the turntable.

On the other hand, Figure 6 shows the state of the optical pickup unit support means with the tray assembly accommodated in the inner housing, the locking lever is rotated in the reverse direction of Figure 5 is the other end of the locking lever is separated from the lower portion of the spindle motor .

If the locking lever continues to support the lower part of the spindle motor even after the optical disc is mounted, external shocks applied to the optical disc player device are transmitted to the optical pickup unit as it is, thereby degrading the performance of the optical pickup unit or the optical disc player device. It can cause damage.

Therefore, if there is no need to forcibly support the optical pickup unit in the optical disc player apparatus (e.g., mounting of the optical disc), the optical pickup is separated by separating the optical pickup unit support means from the lower part of the optical pickup unit as shown in FIG. It is desirable to remain elastic and engaged within the tray assembly.

As described above, the present invention is characterized in that the optical pickup unit is supported by the optical pickup unit support means when the tray assembly containing the optical pickup is withdrawn from the inner housing, so that the operation of mounting the optical disc is stably performed. An optical disc player device can be provided.

According to the invention, a lock that engages with one of the pair of support pieces and support pieces coupled to the bottom surface of the inner housing and is coupled to the lower case of the tray assembly to selectively support the lower part of the spindle motor by rotation. There is provided an optical pickup unit support means comprising a lever.

The optical disc player device according to the present invention includes an optical pickup unit support means capable of supporting the optical pickup unit from below, and the optical pickup unit (specifically, the spindle even when the tray assembly is pulled out from the inner housing and the optical disc is mounted). The lower part of the motor) can be stably supported, thereby eliminating problems such as an access error that can occur due to incomplete mounting by stably coupling the optical disk.

Claims (6)

An optical pickup unit having a turntable on which an optical disc is mounted, a spindle motor for rotating the turntable, and an optical pickup that reciprocates in a direction toward the turntable and performs reproduction and / or recording on the mounted optical disc, wherein the spindle A tray assembly comprising an upper and a lower case that houses a motor and an optical pickup unit; An inner housing defining a space in which the tray assembly can be accommodated and having an open front surface; And And tray driving means connected to each of the tray assembly and the inner housing, the tray assembly driving the tray assembly to be received in the inner housing or drawn out through an open front surface of the housing. And an optical pickup unit support means for preventing the flow of the optical pickup unit by supporting the optical pickup unit when the tray assembly is pulled out and the optical disk is mounted thereon. According to claim 1, wherein the optical pickup unit support means is coupled to the inner housing is driven by a pair of support pieces, and a locking lever that is coupled to the lower case and the center is engaged with one of the support pieces to rotate And when the tray assembly is pulled out, the locking lever rotates to support the lower portion of the optical pickup unit, thereby preventing the optical pickup unit from flowing. The optical disk according to claim 2, wherein the locking lever is a bar-shaped lever which is in close contact with the surface of the lower case, and the center is cocked by the lower case to serve as a hinge, and rotates in engagement with the driving of the support piece. Player device. The method of claim 3, wherein one end of the locking lever is engaged with one of the support pieces, and the other end of the locking lever is partially bent to form a high height with a predetermined height difference, and when the tray assembly is withdrawn, And the other end is pushed to the lower part of the spindle motor by rotation to strongly support the optical pickup unit. According to claim 1, wherein the lower case is formed with a plurality of coupling pins protruding vertically upward, the projections corresponding to the coupling pins are formed on the side of the optical pickup unit, the coupling pins are fitted to the protrusions And the optical pickup unit is fixed relative to the lower case. The optical pickup unit of claim 5, wherein an elastic body having a through hole is interposed in each of the protrusions, and the optical pickup unit is elastically supported with respect to the lower case by correspondingly fitting the coupling pins to the through hole. Optical disc player device.

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