KR200339947Y1 - Device for chucking disk of optical disk drive - Google Patents

Abstract

The present invention relates to a disc chucking device for an optical disc player having a structure capable of slimming the optical disc player. The disc chucking device of the optical disc player according to the present invention is arranged around the opening 11 formed at the center of the upper plate 2, and includes a plurality of leaf springs 7 each having upwardly projecting protrusions 7a, and a plate. A chucking plate accommodating space accommodating upwardly by the springs 7 and having a chucking portion 4a protruding lower than the leaf springs 7 and the chucking plate 4. , A chucking having a plurality of pushing projections 5a arranged around the receiving space to press the projections 7a and a pair of wing pieces 6a and 6b connected to the disk chucking levers 3a and 3b. Plate holder 5.

Description

Device for chucking disk of optical disk drive

The present invention relates to an optical disc player, and more particularly, to a disc chucking device of an optical disc player that can make an optical disc driver more compact by chucking an optical disc inserted into the optical disc player from a horizontal direction.

In general, an optical disc player scans a laser beam from a pickup unit toward an optical data recording medium, i.e., a digital audio disc or a digital video disc for music reproduction, commonly referred to as a CD, and reads information through the laser beam reflected from the disc. Speaks the device.

The optical disc player is provided with a disc chucking device for chucking (or clamping) a disc loaded inward by the disc loading device.

A disc chucking device of a conventional optical disc player is disclosed in Korean Patent Registration No. 20-0314868.

Fig. 1 is a side sectional view showing a disc chucking device of a conventional optical disc player, and Fig. 2 is a side sectional view showing an operating state of a disc chucking device of a conventional optical disc player. As shown in the figure, a disc chucking device of a conventional optical disc player includes a turntable 110 coupled to a rotating shaft 210 of a spindle motor 200, a clamp 120 coupled to an upper end of the turntable 110, and To control the electromagnet 140, the leaf spring 130 for elastically supporting the clamp 120, the electromagnet 140 for attracting the clamp 120 by magnetic force to couple the clamp 200 to the turntable 110, and the electromagnet 140. The clamp control unit 150 is included.

The turntable 110 is coupled to the rotary shaft 210 of the spindle motor 200 installed on the electronic circuit board 300 on the lower side, the disk mounting portion 111 is mounted on the disk (D). Clamp 120 is coupled to the disk mounting portion 111 of the turntable 110, the coupling groove 121 is formed on the lower side to chuck the disk (D) mounted on the disk mounting portion 111, the iron (Fe) material It is formed, and is positioned at a predetermined distance upward from the disk mounting portion 111 of the turntable 110 by the leaf spring 130.

The leaf spring 130 provides an elastic force so that the clamp 120 is positioned at a predetermined distance upward from the disk mounting portion 111 of the turntable 110, and one end of the leaf spring 130 is fixed to the support plate 400 with a bolt B. , The other end is rotatably coupled to the upper end of the clamp 120 by the rotary connection member 131.

The electromagnet 140 is installed around the rotating shaft 210 of the spindle motor 200, and the disk mounting portion of the turntable 110 by pulling the clamp 120 by the magnetic force generated by the power supplied by the clamp control unit 150 To (111). The electromagnet 140 is composed of a cylindrical iron core 141 fitted to the cylindrical coupling protrusion 220 protruding from the top of the body of the spindle motor 200, and a coil 142 wound around the outer circumferential surface of the iron core 141. . Accordingly, the electromagnet 140 forms a balanced magnetic field around the rotational axis 210 of the spindle motor 200, thereby ensuring that the clamp 120 is in close contact with the disk mounting portion 111 of the turntable 110 as well as the coil 142. The iron core 141 is strongly magnetized in the magnetic field formed by) so that the magnetic field of the electromagnet 140 becomes more powerful.

The iron core 141 is formed with a departure prevention groove 141a along the inner circumferential surface, and the separation prevention jaw 221 formed along the upper outer circumferential surface of the coupling protrusion 220 is fitted into the departure prevention groove 141a. The clamp control unit 150 controls the electromagnet 140 by applying power to the electromagnet 140 so that the disk mounting unit 111 and the clamp 120 of the turntable 110 are coupled or separated.

However, since the disc chucking apparatus of the conventional optical disc player as described above is elastically supported by the leaf spring to perform the chucking movement, a certain amount of space is required for the chuck to move up and down. There was a problem that can not be slim.

An object of the present invention is to provide a disk chucking apparatus for an optical disk player having a structure capable of slimming an optical disk player by using a newer method of optical disk chucking.

1 is a side sectional view showing a disc chucking device of a conventional optical disc player.

Fig. 2 is a side sectional view showing an operating state of a disc chucking device of a conventional optical disc player.

3 is a plan view of a disk chucking apparatus of an optical disk player according to the present invention.

FIG. 4 is a bottom view of the disk chucking device of the optical disk player shown in FIG. 3 with the pickup device removed; FIG.

5 is an exploded perspective view of a disk chucking apparatus of an optical disk player according to the present invention.

6A is a cross-sectional view taken along the line VI-VI of FIG. 4 in a state where the disc is empty in the disc chucking apparatus of the optical disc player according to the present invention;

6B is a cross-sectional view for illustrating the disk chucking state by the disk chucking apparatus of the optical disk player according to the present invention taken along the line VI-VI of FIG. 4;

Explanation of symbols on the main parts of the drawings

1: optical disc player 2: top plate

3a, 3b: lever for disc chuck key 4: chucking plate

4a: Chucking Part 5: Chucking Plate Holder

5a: Pushing protrusion 5b: opening

6a, 6b: wing piece 7: leaf spring

7a: turning 8: turntable

9: magnet 10: motor

11: opening

An object as described above is a disc chucking apparatus of an optical disc player for chucking a disc by a chucking plate sucked by a magnet provided to a turntable, the protrusions being disposed around an opening formed in the center of the top plate and protruding upwards, respectively. A plurality of leaf springs; A chucking plate elastically urged upward by the leaf springs and having a chucking portion protruding downward from the leaf springs; Chucking having a chucking plate accommodating space for accommodating the chucking plate, a plurality of pushing protrusions disposed around the accommodating space for pressing the protrusions, and a pair of wing pieces connected to a disk chucking lever provided on the side thereof. It can be achieved by the disc chucking device of the optical disc player according to the present invention characterized in that it comprises a plate holder.

In the above, the chucking plate is located in the outer circumferential portion so that the spring force of the leaf springs act, the circumferential portion so as to project lower than the leaf springs chucking portion in contact with the upper surface of the disk when chucking the disk, and chucking the disk If not, it is formed in the form of a disc having a central projection which is received in the opening formed in the center of the chucking plate holder by the spring force of the leaf springs.

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

3 is a plan view of the disc chucking apparatus of the optical disc player according to the present invention, and FIG. 4 is a bottom view of the disc chucking apparatus of the optical disc player shown in FIG. 3 with the pickup apparatus removed.

As shown in Figs. 3 and 4, the optical disc player 1 according to the present invention has a top plate 2 having a plurality of guide balls formed thereon and provided with a chucking plate 4 for chucking the disc, and chucking the disc. For this purpose, the disk chucking levers 3a and 3b provided on both sides of the optical disk player 1 are provided.

The chucking plate 4 is housed inside the chucking plate holder 5, which is located in the central portion of the top plate 2. The chucking plate 4 is formed of a disc having a plurality of bends as shown in the figure. The chucking plate 4 is formed in the central portion of the upper plate 2 so as to protrude below the outer circumferential portion 4b and the leaf springs 7, on which the spring force of the leaf springs 7 provided around the opening 11 acts. When attracted by a magnet 9 located in the outer periphery 4b and provided to the turntable 8, i.e., when the disk is chucked, the chucking portion 4a that contacts the upper surface of the disk, and when the disk is not chucked. It is formed in the form of a disc so as to have a central projection 4c received in the opening 5b formed in the center of the chucking plate holder 5 by the spring force of the leaf springs 7.

The chucking plate holder 5 has blade pieces 6a, 6b connected to the respective disk chucking levers 3a, 3b, as can be seen from the figure. The blade pieces 6a and 6b are connected to the disc chucking levers 3a and 3b in a state sandwiched between the disc chucking levers 3a and 3b provided on both sides of the optical disc player 1 and the top plate 2. , The chucking plate holder 5 may be installed on the top of the top plate.

Meanwhile, the chucking plates 4 accommodated in the chucking plate holder 5 are arranged at equal intervals along the inner edge of the opening 11 formed in the central portion of the upper plate 2, as shown in FIGS. 3 to 5. It is elastically supported by the plurality of leaf springs 7, and is pressed into the top of the chucking plate holder 5.

On the other hand, the chucking plate holder 5 has pressing protrusions 5a protruding by the number of leaf springs 7, and these pressing protrusions 5a are equally spaced as can be seen from FIGS. 3 to 5 at equal intervals. Is placed. In addition, the leaf springs 7 for elastically pressing the chucking plate 5 housed in the chucking plate holder 5 also have a chucking plate holder on the rotational path of the pressing protrusions 5a formed in the chucking plate holder 5. Each of the protrusions 7a protrudes toward 5).

As shown in FIG. 6A, with the disk empty, the chucking plate 4 is pressed toward the chucking plate holder 5 by the leaf springs 7. In this state, when the loaded disc is positioned in the chucking position by the disc chucking levers 3a and 3b, the chucking plate holder 5 connected to the disc chucking levers 3a and 3b by the wing pieces 6a and 6b. ) Is rotated in accordance with the movement of the disc chucking levers 3a and 3b. As the chucking plate holder 5 rotates, the pressing protrusions 5a formed on the chucking plate holder 5 press downwardly the protrusions 7a formed on the respective leaf springs 7 as shown in FIG. 6B. .

As described above, the projections 7a formed on the respective leaf springs 7 are pushed downward by the pressing projections 5a formed on the chucking plate holder 5, thereby chucking the plate toward the chucking plate holder 5. The leaf springs 7 which press the 4 move downward by the height of the projections 7a. Therefore, the lower inner side of the chucking plate holder 5 which accommodates the chucking plate 4 must be provided with a space of a predetermined size as can be seen from FIG. 6A, and the chucking plate 4 has projections 7a in this space. You can move it down by the height of).

At the same time as the chucking plate 4 is lowered by the chucking plate holder 5, the turntable 8 positioned below the disk is raised to the chucking position by the disk chucking levers 3a and 3b, and the turntable 8 The chucking plate 4 is sucked downward by the magnetic force of the magnet 9 provided to the chucking portion 4a, and the chucking portion 4a provided below the chucking plate 4 is brought into close contact with the disc as shown in FIG. 6B. Therefore, in the state where the disk is chucked by the chucking plate 4, the disk is rotationally driven by the motor 10 provided at the bottom of the turntable 8.

As described above, when ejecting the disk while the disk is chucked, the disk chucking levers 3a, 3b operate in opposite directions, whereby the wing pieces 6a, 6b provided on both sides of the chucking plate holder 5. As the pivots pivot in the opposite direction as when chucking, the pressing projections 5a holding the projections 7a formed in the leaf springs 7 are out of the pressing position, while the turntable 8 moves downward. Therefore, the chucking plate 4 is pressurized upward by the leaf springs 7 as shown in FIG. 6A, so that the opening (3) in which the central projection 5c of the chucking plate 4 is formed in the chucking plate holder 5 ( Inserted into 5b), the chucking state of the disc can be released.

According to the disk apparatus of the optical disk player according to the present invention having the structure as described above, since the chucking plate and the leaf springs for pressing the chucking plate are formed of a thin plate material, it is possible to achieve the slimming of the optical disk player.

Claims (2)

A disc chucking apparatus of an optical disc player for chucking a disc by a chucking plate sucked by a magnet provided to a turntable, A plurality of leaf springs disposed around an opening formed in the center of the upper plate and each having protrusions projecting upwardly; A chucking plate elastically urged upward by the leaf springs and having a chucking portion protruding downward from the leaf springs; Chucking having a chucking plate accommodating space for accommodating the chucking plate, a plurality of pushing protrusions disposed around the accommodating space for pressing the protrusions, and a pair of wing pieces connected to a disk chucking lever provided on the side thereof. Disc chucking device of an optical disc player, characterized in that it comprises a plate holder. 2. The chucking plate according to claim 1, wherein the chucking plate is located on an outer circumferential portion through which spring force of the leaf springs acts, the chucking portion on the outer circumferential portion so as to protrude below the leaf springs and in contact with an upper surface of the disk when chucking the disk; The disc chucking apparatus of the optical disc player, characterized in that it is formed in the form of a disc having a central projection accommodated in the opening formed in the center of the chucking plate holder by the spring force of the leaf springs when the disc is not chucked.