KR20070002978A - Apparatus for absorbing vibration of a drive unit assembly of a optical disc player - Google Patents

Abstract

A drive unit assembly vibration absorbing apparatus of an optical disk player is provided to show excellent attenuation capability of vibration even though strong vibration is applied to a base plate owing to high-speed rotation of a spindle motor, and to quickly attenuate the vibration, thereby exactly conducting reproducing and recording processes of a disk at high speed. The first plural dampers(110) are individually fixed to an installation surface(1) of a drive unit assembly, and are equipped with the first coupling grooves(112) along the circumference. An attenuation plate(120) is equipped with the first and second coupling units(121,122) whose one side is open, and wherein the first coupling units(121) are inserted into the first coupling grooves to be supported on the first damper. The second plural dampers(130) is equipped with the second coupling grooves(131) along the circumference so that the second coupling units(122) are inserted into the second coupling grooves, and support a base plate(200) by forming the third coupling grooves(132) along the circumference on an upper side of the second coupling grooves, in order that the second coupling units(140) plurally formed to open one side on the base plate are inserted into the third coupling grooves.

Description

Drive unit assembly vibration absorber of optical disc player {APPARATUS FOR ABSORBING VIBRATION OF A DRIVE UNIT ASSEMBLY OF A OPTICAL DISC PLAYER}

1 is a plan view illustrating a vibration absorber of a drive unit assembly of an optical disc player according to the prior art;

2 is a cross-sectional view showing a vibration absorber of the drive unit assembly of the optical disc player according to the prior art,

3 is a plan view showing a vibration absorber of the drive unit assembly of the optical disc player according to the present invention;

4 is a sectional view showing a vibration absorber of the drive unit assembly of the optical disc player according to the present invention;

5 is an exploded perspective view showing the vibration absorber of the drive unit assembly of the optical disk player according to the present invention.

<Description of Symbols for Main Parts of Drawings>

110: first damper 112: first coupling groove

120: attenuation plate 121: first coupling portion

122: second coupling portion 130: second damper

131: second coupling groove 132: third coupling groove

140: third coupling portion

The present invention relates to a vibration absorber of a drive unit assembly of an optical disc player, and more particularly, to a drive of an optical disc player in which the vibration damping ability is improved even when a strong vibration occurs due to the high speed rotation of the spindle motor in the optical disc player. The unit assembly relates to a vibration absorber.

In general, the method of storing data has changed due to an increase in the amount of data to be stored. That is, the transmittance, reflectance, phase, polarization, etc. of the light where the data is stored in the electrical method of storing the data by changing the capacitance, electrical resistance, etc. of the data storage location and reading the change electrically. They are moving to an optical way to store data by changing it and reading the change into a laser beam.

Optical discs, which are optical data recording media, include digital audio discs (DADs) and digital video discs (DVDs) for playing music, commonly called CDs. The optical disk reflects the laser beam scanned from the pick-up unit, which is clamped to the turntable rotated by the spindle motor and moves along the radial direction of the optical disk, so that the reflectance of the beam reflected by the pickup unit or the beam at the time of reflection is reflected. Read data through phase or polarization change of.

An optical disc player is provided with a drive unit assembly for reproducing or recording a disc. The drive unit assembly is installed so that a turntable for rotating by clamping the disc on the base plate is rotated by a spindle motor, as well as playing and recording the disc. For this purpose, a pickup unit for projecting the laser beam towards the disk is installed to move along the radial direction of the disk.

On the other hand, the conventional optical disk player is provided with a vibration absorbing device between the base plate and the mounting surface of the drive unit assembly to absorb the vibration of the drive unit assembly installed in the chassis.

An apparatus for absorbing vibration applied to a drive unit assembly of a conventional optical disc player will be described with reference to the accompanying drawings.

1 and 2 are a plan view and a cross-sectional view showing a vibration absorber of the drive unit assembly of the optical disc player according to the prior art. As illustrated, the vibration absorber 10 of the drive unit assembly of the conventional optical disc player includes a plurality of dampers 11 on a surface on which the drive unit assembly is to be installed, for example, a fixing protrusion 2 provided in the chassis 1. The coupling part 14 is formed in a plurality so that one side is opened to the base plate 3 of the drive unit assembly in the coupling groove 13 is formed along the outer circumferential surface of the damper 11 is fixed to the bolt (12). ), The dampers 11 support the base plate 3 in a state spaced apart from the chassis 1 by a predetermined distance.

The damper 11 is made of a material such as rubber having elasticity, and a fluid is filled inside to damp vibration. This damper 11 absorbs vibrations applied to the base plate 3 from the chassis 1 or by the drive of the spindle motor.

By the way, the optical disc player is increasing the reproduction or recording speed in order to increase the data processing speed during reproduction or recording on a CD or DVD, and the spindle motor which rotates the turntable to increase the speed is becoming even faster. Therefore, the base plate 3 is vibrated violently due to the vibration generated by the rotation of the spindle motor at high speed, which makes it difficult to stabilize the transfer of the pickup unit only by the conventional damper 11 structure, thereby making it difficult to reproduce or record the work. I had a problem that occurred.

Therefore, there is a need for the development of a device that properly attenuates the strong vibration generated as the spindle motor of the optical disc player becomes faster so as not to affect playback or recording.

The present invention is to solve the above-mentioned conventional problems, an object of the present invention is to improve the attenuation of the vibration as well as time required for attenuation even if a strong vibration occurs due to the high-speed rotation of the spindle motor in the optical disk player The present invention provides a vibration absorbing device for a drive unit assembly of an optical disc player that is easy to assemble and to accurately reproduce and record a disc at high speed without errors.

In order to achieve the above object, the present invention provides a device for absorbing vibrations applied to a drive unit assembly in which an turntable and a pickup unit are installed in a base plate in an optical disc player, each of which is fixed to an installation surface of the drive unit assembly, A plurality of first dampers having a first coupling groove is formed along with a plurality of first and second coupling portions, one side of which is opened, and the first coupling portions are respectively fitted into the first coupling grooves of the first damper. Attenuation plate supported by the first damper, and a second coupling groove is formed along the outer circumferential surface so that each of the second coupling portion of the damping plate is fitted, and a plurality of second coupling portions are formed so that one side is opened to the base plate. A plurality of second dampers for supporting the base plate by forming a third coupling groove along the outer circumferential surface on the upper side of the second coupling groove It characterized in that it comprises.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention.

3 to 5 are a plan view, a cross-sectional view and an exploded perspective view showing the vibration absorber of the drive unit assembly of the optical disk player according to the present invention. As shown, the drive unit assembly vibration absorber 100 of the optical disk player according to the present invention in the optical disk player turntable (not shown) for clamping and rotating the disk and the pickup unit for moving the disk in the radial direction (not shown) ) Is a device for absorbing vibration of the drive unit assembly installed in the base plate 200, a plurality of first dampers (110) fixed to the mounting surface (1), and the damping plate supported by the first damper (110) And a plurality of second dampers 130 fixed to the damping plate 120 and supporting the base plate 200.

The first and second dampers 110 and 130 are made of a material such as rubber having elasticity, and may fill a fluid for vibration attenuation inside thereof as necessary.

Each of the first dampers 110 is fitted to the mounting surface of the drive unit assembly, for example, a fixing protrusion 2 provided on the chassis 1 and fixed by bolts 111 inserted from the upper side thereof. Coupling groove 112 is formed.

The damping plate 120 has the same number of first coupling parts 121 as the first damper 110 is formed at the edge, the first coupling portion 121 is formed so that one side is open, the opening side width is larger than the inner diameter Since it is formed small, it is inserted into the first coupling groove 112 of the first damper 110 so as not to be easily separated, and is elastically supported in a state spaced apart from the chassis 1 by the first damper 110. In addition, the attenuation plate 120 is provided with a plurality of second coupling portions 122 formed at one side such that one side of the damping plate 120 is opened to the edge, and the opening side width thereof is smaller than the inner diameter.

Each of the second dampers 130 is fixed on the damping plate 120 by forming a second coupling groove 131 along the outer circumferential surface in order to be fitted so that the second coupling portion 122 is not easily separated. In addition, the second damper 130 is a third coupling groove 132 is formed along the outer circumferential surface so as to be located above the second coupling groove 131, a plurality of the first plate is formed so that one side is opened in the base plate 200 The three coupling parts 140 are elastically supported so that the base plate 200 is spaced apart from the attenuation plate 120 by being fitted so as not to be easily separated from the third coupling groove 132.

Similar to the first and second coupling parts 121 and 122, the third coupling part 140 is formed to have a width smaller than an inner diameter so that the third coupling part 140 is easily inserted into the third coupling groove 132 of the second damper 130. It does not go away.

The operation of the drive unit assembly vibration absorber of the optical disc player having such a structure is performed as follows.

Vibration is applied to the base plate 200 by a drive of a spindle motor (not shown) that rotates a turntable (not shown) installed on the base plate 200 or attenuated even if vibration is applied to the base plate 200 from the outside. The first damper 110 and the second damper 130 respectively absorb vibrations with the plate 120 therebetween, thereby absorbing the vibrations twice, and the vibration damped by the first dampers 110 and the second dampers ( The vibrations attenuated by the 130 are canceled with each other, and the interval between the first dampers 110 as well as the distance between the second dampers 130 are kept constant by the damping plate 120, thereby allowing the first and second to be fixed. Quickly removes components in various directions from the vibrations of the dampers 110 and 130. Therefore, even if strong vibration is applied to the base plate 200 due to the high speed rotation of the spindle motor, the vibration attenuation ability is excellent and the vibration is rapidly attenuated so that the reproduction and recording of the disc can be accurately performed at a high speed.

In addition, the second damper 130 is easily connected to the second coupling portion 122 of the damping plate 120 and the third coupling portion 140 of the base plate 200 by the second and third coupling grooves 131 and 132. Assembly is easy by fitting them together.

As described above, the drive unit assembly vibration absorbing device of the optical disk player according to the present invention improves the attenuation capability of the vibration as well as attenuation even if strong vibration occurs due to the high speed rotation of the spindle motor in the optical disk player. By shortening the time required, the disc is reproduced and recorded at high speed without errors, and the assembly is easy.

What has been described above is only one embodiment for implementing the vibration absorbing device of the drive unit assembly of the optical disk player according to the present invention, the present invention is not limited to the above-described embodiment, it is claimed in the claims As will be apparent to those skilled in the art to which the present invention pertains without departing from the gist of the present invention, the technical spirit of the present invention may be changed to the extent that various modifications can be made.

Claims (1)

A device for absorbing vibrations applied to a drive unit assembly installed in a base plate in a turntable and a pickup unit in an optical disc player, A plurality of first dampers each fixed to an installation surface of the drive unit assembly and having a first coupling groove formed along an outer circumferential surface thereof; A damping plate supported by the first damper by forming a plurality of first and second coupling parts each having one side open, the first coupling parts being fitted into the first coupling grooves of the first damper, respectively; A second coupling groove is formed along an outer circumferential surface of each of the second coupling portions of the attenuating plate, and a second coupling portion formed in plural so that one side is opened on the base plate is fitted on the upper side of the second coupling groove. A plurality of second dampers for supporting the base plate by forming a third coupling groove along the outer peripheral surface Drive unit assembly vibration absorber of the optical disc player comprising a.

Images