KR19990026276U - Lifting device in disk tray - Google Patents

Abstract

The present invention is a housing portion; A disc tray including a main body portion formed to be retractable from the housing portion to the outside, and a disc seating portion on which the disc is seated on the main body portion; A guide part which protrudes from the bottom surface of the main body part and guides the disc seating part to be liftable from the main body part by entering a through hole formed in a predetermined portion of the disc seating part; And a torsion bar spring which is supported at both sides of the inner surface of the main body portion and is in contact with the lower surface of the disk seating portion in a longitudinal direction to elastically bias the disk seating portion upwardly with respect to the body portion. The device relates to an elastic biasing means provided on the underside of the disc seating portion with a torsion bar spring, so that the lifting movement of the disc seating portion can be easily and elastically supported.

Description

Lifting device in disk tray

The present invention relates to a disc tray lifting device, and more particularly, to a disc tray lifting device having an improved structure of an elastic biasing means for supporting a disc tray.

In general, a disc player is a device for recording information on a recording medium such as a compact disk (CD) or a digital video disk (DVD) or reproducing the recorded information. Such a disc player is equipped with a disc tray for taking out a recording medium to the outside.

1 shows a disc tray employed in a conventional disc player 10.

Referring to the drawings, the disc player 10 is provided with a housing portion 11. The housing unit 11 is provided with a spindle motor unit 12 for supplying rotational force, and the spindle motor unit 12 is equipped with a turntable assembly 13.

The turntable assembly 13 is a turntable main body 13a coupled to the power take-off shaft of the spindle motor part 12 and a pad 13b installed on an upper surface of the turntable main body 13a to cushion a disk when the disk contacts. ) And a magnetic body 13c installed through a coupling hole formed in the turntable main body 13a.

The disc tray 14 is installed on the turntable assembly 13 at a predetermined interval. The disc tray 14 can be taken out by sliding in the guide groove portion 11a formed along the side wall portion of the housing portion 11.

The disc tray 14 is provided with a main body portion 14a, and the main body portion 14a is provided with a disc seating portion 14b on which a disc is mounted. A plurality of through holes 21 are formed at the edge side of the disc seating portion 14b, and the guide portions 14c protruding at a predetermined height from the bottom surface of the main body portion 14a through the through holes 21 are formed. It is pulled in.

On the outer circumferential surface of the guide portion 14c, a plurality of elastic biasing means 14d, for example, coil springs, are installed to elastically support the disk seating portion 14b, which is the bottom surface of the body portion 14a and the disk. It is interposed between the lower surfaces of the seating part 14b.

In addition, the disc tray 14 is provided with a pressing portion 14e for pressing the disc seat 14b to an appropriate pressure on a predetermined portion of the upper surface of the main body portion 14a when the disc seating portion 14b is raised by the elastic force of the elastic biasing means 14d. Is installed.

On the other hand, although not shown in the figure, a clamp holder with a metal clamp is provided on the upper portion of the disc tray 14, which is in contact with each other by the magnetic material 13c of the turntable assembly 13. The tray 14 is supported.

In the conventional disc player configured as described above, the disc tray 14 on which the disc is seated is transferred and positioned on the turntable assembly 13. Subsequently, the clamp holders are lowered downward to be attached to each other by the magnetic force of the magnetic body 13c. Accordingly, the disk is pressed by the clamp holder and the turntable assembly 13 at the same time and fixed.

The disc then rotates simultaneously with the turntable assembly 13 by the rotation of the spindle motor portion 12 to reproduce the information stored in the disc by the optical pickup portion.

Here, the disc tray 14 is supported by the elastic biasing means 14d. That is, as shown in Fig. 2, when the disc tray 14 moves on the turntable assembly 13, and then the clamp holder is lowered on the top thereof, the disc tray 14 is elastically biased at its lower surface. It moves downward while receiving the compression force of the means 14d.

At this time, since the through hole 21 through which the guide portion 14c protruding from the bottom surface of the main body portion 14a is formed in the disc tray 14, the disc tray 14 is guided when the disc tray 14 moves. It will provide a passage portion through which the portion 14c can pass.

Thus, the disc tray 14 is elastically lifted and lowered by the elastic bias means 14d in the space portion 22 formed between the bottom surface of the main body portion 14a and the bottom surface of the disk seating portion 14b. Exercise is possible.

Subsequently, when the disc is taken out, the clamp holder and the disc tray 14 are continuously lifted up as opposed to the above cases. At this time, the disc tray 14 is springed upward by the elastic force of the elastic biasing means 14d supported on the bottom surface thereof.

By the way, in the conventional lifting device of the disc tray 14, when the elastic biasing means 14d is excessively subjected to a compressive load, a spring buckling occurs and the elastic biasing means 14d functions properly. You may not be able to.

In addition, the elastic biasing means 14d is caught in the boss formed at the lower end of the guide portion 14c, thereby preventing the synergistic action of the disk seat 14b.

The present invention was devised to solve the above problems, and an object of the present invention is to provide a lifting device of a disk tray, which is easy to move up and down by improving the structure of the elastic bias means installed at the lower part of the disk tray.

1 is a plan view showing an example of a conventional disc tray,

FIG. 2 is a front view of the disc tray of FIG. 1;

3 is an exploded perspective view showing a disc player according to the present invention,

4A is a front view illustrating a state in which the disc tray employed in the disc player of FIG. 3 is not pressurized,

4B is a front view showing a state where the disc disc tray employed in the disc player of FIG. 3 is pressed.

<Brief description of symbols for the main parts of the drawings>

10,30. Disc player 11,31. Housing part

11a. Guide groove 12,32. Spindle motor part

13,33. Turntable assembly 13a, 33a. Turntable body

13b, 33b. Pad 13c, 33c. Magnetic material

14,34. Disc trays 14a, 34a. Main body

14b, 34b. Disc seat 14c, 34c. Guide part

14d, 40. Elastic bias means 14e, 34e. Pressurization

21,41. Through hole 22,42. Space

35. Clamp Holder 35a. clamp

36. Optical pickup 43. Protrusion

40a. Elastic portion 40b. Contact

In order to achieve the above object, the disc tray lifting apparatus of the present invention includes a housing part; A disc tray including a main body portion formed to be retractable from the housing portion to the outside, and a disc seating portion on which the disc is seated on the main body portion; A guide part which protrudes from the bottom surface of the main body part and guides the disc seating part to be liftable from the main body part by entering a through hole formed in a predetermined portion of the disc seating part; And a torsion bar spring which is supported at both sides of the inner surface of the main body portion and is in longitudinal contact with the lower surface of the disk seating portion to elastically bias the disk seating portion upwardly with respect to the body portion.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the lifting device of the disc tray according to the present invention.

3 shows an example of a disc player 30 according to the present invention.

Referring to the drawing, the disc player 30 is provided with a housing part 31. The housing unit 31 is provided with a spindle motor unit 32 for supplying rotational force, and the turntable assembly 33 is coupled to the spindle motor unit 32.

The turntable assembly 33 includes a turntable body 33a coupled to a power take-off shaft of the spindle motor part 32, a pad 33b attached to an upper surface of the turntable body 33a, and the turntable body 33a. It is provided with a magnetic body (33c) is coupled through a coupling hole formed in the center portion.

The disc tray 34 which is taken out from the housing part 31 is installed in the upper part of the turntable assembly 33. The disc tray 34 is provided with a main body 34a, and a disc seating portion 34b on which the disc is mounted is provided on the main body 34a. A through hole 41 is formed at the edge of the disc seating portion 34b to provide a passage portion through which the guide portion 34c protruding from the bottom surface of the main body portion 34a can pass.

In addition, the disc tray 34 is provided with a pressing portion 34e at a predetermined portion of the upper surface of the main body portion 34a, which does not escape to the outside of the disc tray 34 when the disc seating portion 34b is elevated. Press at a constant pressure to avoid pressure.

On the other hand, the clamp holder 35 is installed on the top of the disc tray 34. A clamp 35a made of metal is coupled to the clamp holder 35 so that the clamp holder 35 is detachable by the magnetic force of the magnetic body 33c of the turntable assembly 33. In the central portion of the housing portion 31, there is provided an optical pickup portion 36 which reciprocates and reproduces data recorded on the disc.

Here, as shown in Figs. 4A and 4B, the lower surface of the disc tray 34 is provided with an elastic biasing means 34d according to the features of the present invention.

4A shows a state where the disc seat 34b is not pressed by the elastic biasing means 40, and FIG. 4B shows that the disc seat 34b is pressed by the elastic biasing means 40. FIG. It shows the state.

4A and 4B, a space portion 42 is provided between the bottom surface of the body portion 34a and the bottom surface of the disc seating portion 34a to allow the disc seating portion 34a to move up and down. A plurality of protrusions 43 are formed on both sidewalls of the main body 34a along the space 42 to correspond to each other.

The protrusion 43 is provided with an elastic biasing means 40. That is, the elastic biasing means 40 has an end portion of which is fixed to the projection portion 43 and elastically biased to the elastic portion 40a, and extends from the elastic portion 40a and the bottom surface of the disk seating portion 34a And a contact portion 40b for elastically supporting the disc seating portion 34a in contact with the.

And, the plurality of elastic bias means 40 according to the present invention is provided on both sides of the main body portion 34a, each of the elastic bias means 40 is a rod-shaped torsion bar spring (torsion bar spring) using a torsional force Is preferable.

The operation of the disc tray 34 according to the present invention configured as described above is as follows.

The disc tray 34 on which the disc is seated is transported and placed on the turntable assembly 33. Subsequently, the clamp holder 35 is lowered downward, and the clamps 35a provided in the clamp holder 35 are mutually attached to the magnetic body 33c of the turntable assembly 33 by magnetic force. Accordingly, the disk is pressed by the turntable assembly 33 and the clamp holder 35 to be fixed.

Subsequently, the disc is rotated simultaneously with the turntable assembly 33 by the spindle motor part 32 so that the optical pickup part 36 reproduces the information stored in the disc.

Here, the disk seat 34b is supported by the elastic bias means 40. That is, as shown in Fig. 4A, a plurality of elastic biasing means 40 are respectively in contact with the lower surface of the disk seat 34b. Subsequently, when the disc seating portion 34b moves downward, the disc tray 34 is placed under a constant pressure due to the torsional elastic force of the elastic biasing means 40.

As shown in FIG. 4B, when the disc seat 34b moves downward, the elastic bias means 40 acting on the bottom surface thereof is compressed. In addition, since the guide part 34c is guided through the through hole 41, the disc seating part 34b moves downward while the elastic force is applied.

Subsequently, when the disc is taken out, the clamp holder 35 and the disc tray 34 continuously move upward as opposed to the above case. At this time, the disc seating portion 34b is rebounded to the original state by jumping upward with the elastic force of the elastic bias means 40 supported on the lower surface.

As described above, the elevating device of the disc tray of the present invention can easily and elastically support the elevating motion of the disc seat by changing the elastic bias means installed on the bottom surface of the disc seat to a torsion bar spring.

Although the present invention has been described with reference to one embodiment shown in the drawings, this is merely exemplary, and it will be understood by those skilled in the art that various modifications and equivalent other embodiments are possible. Therefore, the true technical protection scope of the present invention should be defined by the technical spirit of the appended claims.

Claims (1)

A housing part; A disc tray including a main body portion formed to be retractable from the housing portion to the outside, and a disc seating portion on which the disc is seated on the main body portion; A guide part which protrudes from the bottom surface of the main body part and guides the disc seating part to be liftable from the main body part by entering a through hole formed in a predetermined portion of the disc seating part; And Both sides are supported on the inner side of the main body portion, a torsion bar spring for elastically biasing the disc seating portion upward with respect to the main body portion in the longitudinal direction to the lower surface of the disk seating portion; lifting device of a disk tray including a .