KR200153602Y1 - Apparatus for loading a disc of an optical disc player - Google Patents

Abstract

The present invention discloses an improved disc loading apparatus of an optical disc player.

The present invention is a loading roller which is driven by a loading motor to load and unload a disk onto a turntable, a disk guide for reciprocating back and forth installed in the clamping chassis for clamping the disk on the turntable, and guides the entry and exit of the disk, and the clamping chassis. And a rocker that is rotatably mounted on the disk guide, and which locks the disk guide selectively to the front or the rear thereof, and a disk lever hinged to the top chassis to release the locker by the entry and exit of the disk. To form a circular guide slot centering on the hinge axis of the disc lever on one side of the top chassis, the guide pin is fixed to the disc lever and movably coupled to the guide slot of the top chassis, the upper surface of the top chassis Stopper and top fixed to guide pin to prevent separation of guide pin It is provided with an elastic means for elastically biasing both in opposite directions by being coupled to the guide pin between the disc and the disc lever, so that the disc lever can be smoothly rotated during external impact while the gap is allowed between the top chassis and the disc lever. Friction noise generated in the liver is minimized.

Description

Disc loading device of optical disc player

The present invention relates to an optical disc player, and more particularly, to a loading device for seating a disc on a turntable.

In general, an optical disc player such as a laser disc player (LDP) or a compact disc player (CDP) or the like places a disc for recording and reproducing on a turntable, clamps it, and then rotates the disc to move in the radial direction thereof. A recording and reproducing apparatus for reproducing information recorded on a disc by optical pick-up or recording new information on a disc. Accordingly, the optical disc player is provided with a disc loading device for loading a disc input from the outside onto the turntable.

1 shows an example of a conventional configuration of such a disk loading apparatus. (a) is a state in which the disk (D) is not inserted, the disk guide 5 is elastically biased to the turntable (4) side by the guide spring (6) is restrained by the locker (locker) 7 have. In this state, when the disk D is inserted into the disk D through the disk insertion opening (not shown) of the main chassis as shown in (b), the contact pin 11 of the disk lever 9 is provided. ) Is in sliding contact with the main surface of the disk D, thereby rotating the disk lever 9 counterclockwise. Accordingly, the rocker 7 is rotated clockwise by contact with the disc lever 9 to release the restraint of the disc guide 5, wherein the disc D is a guide bracket of the top chassis 2. guide bracket (not shown) and the loading roller (13) to be in close contact with both.

Then, the loading roller 13 is rotated in a predetermined direction by a loading motor (not shown), so that the disk D is moved onto the turntable 4 by the frictional force with the loading roller 13, thereby ( Guide slit of the clamping chassis 3 with the disk guide 5 for determining the loading position of the disk D as shown in phantom in a) in contact with the main surface of the disk D. It is moved backward along 3a) to position the disk D on the turntable 4. At the same time, the disc lever 9 is returned to the initial position by the restoring elasticity of the return spring 12, and thus the rocker 7 is returned to the initial position by the restoring elasticity of the locking spring 8, thereby allowing the disc guide. It will fix position (5).

On the other hand, unloading of the disk D proceeds in the reverse order of the above-described loading.

However, such a conventional disc loading device is shocked from the outside because the disc lever 9 for guiding loading and unloading of the disc D is supported on the top chassis 2 only by one hinge shaft: 10. When the back is applied, there is a problem in that rattle noise is severely generated due to the vibration. That is, the guide lever 9 should be freely rotated without interruption for smooth guidance of the disk D. As shown in FIG. 2, the gap due to the tolerance between the top chassis 2 and the top chassis 2 is shown. ) Will necessarily exist. This gap G is not a problem in a normal state in which no external force is applied. However, when the vibration from the outside exists, for example, when the player is mounted in a car, as shown in FIG. As described above, the disc lever 9 causes the seesaw movement about the hinge axis 10 by the gap G with the top chassis 2, thereby causing a lot of noise due to the repeated contact with the top chassis 2. . Therefore, the conventional disk loading apparatus cannot guarantee the quality and reliability of the automotive optical disk player, as well as the stability of its operation.

Disclosure of the Invention An object of the present invention is to provide an optical disk player capable of smoothly loading and unloading a disk in view of the above-described conventional problems, while being capable of suppressing noise generated by contact of the disk lever with the top chassis by external impact. To provide a disk loading device.

In order to achieve the above object, a disc loading apparatus of an optical disc player according to the present invention includes a loading roller driven by a loading motor for loading and unloading a disc onto a turntable, and a back and forth movement in a clamping chassis for clamping the disc on the turntable. A disc guide which is installed to guide the entry and exit of the disc, a rocker which is rotatably installed in the clamping chassis to selectively fix the disc guide to the front or the rear thereof, and a hinge coupled to the top chassis to allow the disc to move in and out of the locker. In a disc loading apparatus of an optical disc player having a disc lever for releasing a restraining force, an arc-shaped guide slot around a hinge axis of the disc lever is formed on one side of the top chassis, and is fixed to the disc lever. Guide pins movably coupled to the guide slots in the chassis in), a stopper fixed to the guide pin to contact the top surface of the top chassis to prevent the guide pin from being separated, and an elastic to elastically bias them in opposite directions by being coupled to the guide pin between the top chassis and the disc lever. It is characterized by comprising a means.

According to one preferred feature of the present invention, the guide groove of the arc-shaped guided into the appropriate depth from the lower surface of the top chassis is formed by bending, the guide slot is formed on the bottom surface of the guide groove to secure the mounting space of the spring do.

According to another preferred feature of the present invention, a sliding plate which is coupled to the guide pin to be movable and elastically contacts the bottom surface of the top chassis by the elastic means is further provided to enable a smooth rotational movement of the disc lever.

Accordingly, the present invention, because the disc lever is supported in the top chassis in two positions can be rotated very smoothly even if an external shock is applied, but the generation of rattle noise due to the gap between the two is suppressed to the maximum, especially in the automobile This will have a great effect on improving the quality and reliability of the optical disc player.

1 is a plan view showing the operation of the conventional disk loading apparatus,

FIG. 2 is an excerpted side view taken along II of FIG. 1;

3 is a plan view showing a disk loading apparatus according to the present invention,

4 is a partially enlarged excerpt side view,

5 is a plan view sequentially showing the operation of the present invention.

* Explanation of symbols for main parts of the drawings

22: top chassis 23: guide groove (top chassis)

23a: guide slot (top chassis)

24: clamping chassis

24a, 24b: guide slit (in clamping chassis)

25 turntable 26 disc guide

30: locker 31: (locker) finger

33: disc lever 34: hinge shaft (of disc lever)

35: contact pin (on disc lever) 36: push piece (on disc lever)

38: guide pin (on disc lever)

39: stopper 40: compression coil spring

41: sliding plate 42: loading roller

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

3 and 4, the disc loading apparatus of the optical disc player according to the present invention is driven forward and backward by a loading motor (not shown) on the disc insertion port side of the main chassis 21 to drive the disc D as a drive unit ( The loading roller 42 for loading and unloading onto the turntable 25 of the drive unit is rotatably supported, and the disc D is inserted between the loading roller 42 on the lower surface of the top chassis 22. A guide bracket (not shown) is installed to guide the disk D to be in close contact with the loading roller 42.

At least two guide slits 24a and 24b are provided in the clamping chassis 24, which is positioned at the upper side of the drive unit to the rear side of the top chassis 22 and clamps the disk D seated on the turntable 25. Are formed side by side in the direction of travel. One of these two guide slits 24a and 24b has a disc guide 26 which contacts the main surface of the disc D and sets its position during loading and unloading. Is coupled to the lower surface of the clamping chassis 24 to be movable, and the engaging pin 28 of the disk guide 26 is movably coupled to the other guide slit 24b by the guide spring 29. It is elastically biased in front of it, ie towards the turntable 25.

Rocker 30 for selectively fixing the disk guide 26 to the front or rear of the guide slit 24a in accordance with the loading and unloading of the disk D on one side of the clamping chassis 24 near the turntable 25. ) Is rotatably installed, and is elastically biased toward the disk guide 26 by the locking spring 32. To this end, one side of the rocker 30 is formed with a predetermined interval between the front and rear locking jaw (30a, 30b) to selectively hang the locking pin 28 of the disk guide 26, the other side release the locking A finger 31 for extending is formed.

On the other hand, the hinge shaft is provided with one side of the top chassis 22 to guide the entry and exit of the disc D and the disc lever 33 to selectively release the restraining force of the rocker 30 by the entry and exit of the disc D. And is elastically biased in a direction opposite to the rocker 30 by the return spring 37. To this end, one end of the disc lever 33 is provided with a contact pin 35 for sliding contact with the outer circumference of the disc D, and the other end of the disc lever 33 presses the finger 31 of the rocker 30 when the disc D enters and exits. A pressing piece 36 for rotating the 30 in the reverse elastic direction is banded.

Accordingly, an appropriate gap G is formed between the top chassis 22 and the disc lever 33 for smooth rotational movement of the disc lever 33, which causes noise during external shock. In order to prevent this, an arc-shaped guide slot 23a around the hinge axis 34 of the disc lever 33 is formed on one side of the top chassis 22, and the disc lever 33 At the proper position of the guide pin 38 is movably coupled to the guide slot 23a of the top chassis 22 is installed. The guide pin 38 is formed from the guide slot 23a by a stopper 39 fixed to the guide pin 38 so that the tip thereof protrudes to the top surface of the top chassis 22 and contacts the top surface of the top chassis 22. Departure is prevented. In addition, the guide pin 38 between the top chassis 22 and the disc lever 33 is interposed with a compression coil spring 40 for elastically biasing them in opposite directions, the compression coil spring 40 is mutually mutually As long as it can be isolated so as not to contact, it can be replaced by soft rubber material.

However, since the gap G between the top chassis 22 and the disc lever 33 is substantially fine, it is very difficult to interpose the compression coil spring 40 therebetween. Accordingly, preferably, the upper groove 22 has an arc-shaped guide groove 23, which is drawn in a proper depth from the lower surface thereof, by banding, and is formed on the bottom surface of the guide groove 23, that is, the surface protruding therefrom. A guide slot 23a into which the guide pin 38 of the disc lever 33 is inserted is formed to secure an installation space of the compression coil spring 40. At this time, as shown in the disc lever 33, the inlet groove 33a of the appropriate depth may be formed, and the guide pin 38 may be installed on the bottom surface of the inlet groove 33a.

In this case, the compression coil spring 40 is in direct contact with the lower surface of the top chassis 22, which may cause a smooth rotational movement of the disc lever 33. The compression coil spring 40 and the top chassis ( The sliding plate 41 elastically contacting the lower surface of the top chassis 22 is preferably coupled to the guide pin 38 between the 22 and 22 by the compression coil spring 40. Accordingly, the disc lever 33 is in sliding contact with the top chassis 22 through the stopper 39 and the sliding plate 41, and the disc lever 33 slides with the stopper 39 for a more smooth rotational movement of the disc lever 33. The plate 41 will preferably be composed of a smooth plastic washer.

The operation of the optical disc player disk loading apparatus according to the present invention configured as described above will be described with reference to FIG. 5.

In FIG. 5, (a) is a state in which the disk D is not inserted, and after the disk guide 26 is elastically biased toward the turntable 25 by the guide spring 29, the locking pin 28 is locked by the rocker. It fits in and restrains by the front latching jaw 30a of 30. As shown in FIG. In this state, when the disk D is inserted into the disk insertion hole of the main chassis 21 as shown in (b), the outer circumference thereof is in contact with the contact pin 35 of the disk lever 33, and the disk D is inserted by the insertion. As the contact pin 35 is in sliding contact with the main surface of the disk D, the disk lever 33 is rotated counterclockwise about the hinge axis 34.

Accordingly, the pressing piece 36 of the disc lever 33 presses the finger 31 of the rocker 30 to rotate the rocker 30 clockwise. Then, the front locking jaw 30a of the rocker 30 is released from the locking pin 28 of the disk guide 26 to release its restraint. At this time, the disk D is sandwiched between the guide bracket of the top chassis 22 and the loading roller 42 to be in close contact with both.

Then, the loading roller 42 is rotated in the predetermined direction by the loading motor to move the disk D onto the turntable 25 by the frictional force, and as a result, the loading position of the disk D as shown in (c). The disk guide 26 for determining the position of the disk D is moved backward along the guide slits 24a and 24b of the clamping chassis 24 while being in contact with the main surface of the disk D, thereby positioning the disk D on the turntable 25. Let's go. At the same time, the disc lever 33 is returned to the initial position by the restoring elasticity of the return spring 37, and the rocker 30 is returned to the initial position by the restoring elasticity of the locking spring 32, The locking jaw 30b fixes the disk guide 26 by supporting the locking pin 28 of the disk guide 26. Unloading is performed in the reverse order of the above loading operation.

Meanwhile, in such an operation, the disc lever 33 of the present invention performs a stable rotational motion without vibration noise even when an external shock is applied as well as a normal state without external shock. That is, the disc lever 33 of the present invention is supported by the hinge shaft 34 and the guide pin 38 at the two positions at the top chassis 22, so that even if an external shock is applied, both for smooth rotation as in the prior art. The seesaw motion due to the gap G imparted to the liver is hardly generated, so that generation of rattle noise due to vibration is suppressed as much as possible. Furthermore, since the present invention has a compression coil spring 40 interposed between the top chassis 22 and the disc lever 33, the external shock is effectively absorbed by the compression coil spring 40, and the present invention vibrates even under impact. Very stable operation is possible by minimizing noise.

As described above, according to the present invention, even when the disc is loaded and unloaded, the disc lever rotates very smoothly and stably, but friction noise between the top chassis and the disc lever due to external impact is hardly generated. The loading and unloading of the disc is made stable. Therefore, the present invention has a particularly excellent effect of greatly improving the quality, reliability and stability of the optical disc player for cars in particular.

Claims (5)

A loading roller driven by a loading motor for loading and unloading a disk onto a turntable, a clamping chassis for back and forth movement in a clamping chassis for clamping the disk on the turntable, for guiding the entry and exit of the disk, and the clamping chassis A disc loading apparatus of an optical disc player, which includes a rocker rotatably installed to selectively fix the disc guide at the front or the rear thereof, and a disc lever hinged to the top chassis to release the locker by entering and exiting the disc. To An arc-shaped guide slot 23a around the hinge axis 34 of the disc lever 33 is formed at one side of the top chassis 22, A guide pin 38 fixed to the disc lever 33 and movably coupled to the guide slot 23a of the top chassis 22; A stopper 39 fixed to the guide pin 38 to contact the top surface of the top chassis 22 to prevent the guide pin 38 from being separated; And an elastic means coupled to the guide pin (38) between the top chassis (22) and the disc lever (33) to elastically bias them in opposite directions. The guide slot (23a) of claim 1, wherein an arc-shaped guide groove (23) drawn in the top chassis (22) from the bottom surface thereof is bent and formed on the bottom surface of the guide groove (23). Disc loading device of an optical disc player, characterized in that formed. The sliding plate 41 of claim 1, further comprising a sliding plate 41 movably coupled to the guide pin 38 to elastically contact the bottom surface of the top chassis 22 by the elastic means. Disc loading device for an optical disc player. 4. The disc loading apparatus of claim 3, wherein the stopper (39) and the sliding plate (41) are made of a smooth plastic washer. The disk loading apparatus of an optical disc player according to claim 1, wherein said elastic means is composed of a compression coil spring (40).