CN1453789A - Vibration Suppression Mechanism for Optical Drives - Google Patents

Abstract

The present invention provides a vibration suppression mechanism for an optical drive, wherein a buffer element is arranged on the outer side of a clamping element fixing seat in the optical drive and on the inner surface of the optical drive casing corresponding thereto, so as to buffer the air flow velocity change generated when the optical disc rotates, thereby reducing the optical disc vibration caused by the air flow velocity change.

Description

Vibration Suppression Mechanism for Optical Drives

Technical field

The invention relates to a vibration suppression mechanism, in particular to a vibration suppression mechanism for an optical disk rotating at high speed.

Background technique

In today's information explosion, most multimedia products are issued in the form of CDs. In recent years, the listing of consumer CDs has increased year by year, and now almost every computer includes a CD-ROM drive. From this we can see the role of CD-ROMs in multimedia. importance. The most common optical drives on the market today are CD-ROM and CD-RW. The capacity of a disc can reach 640MB. From the initial single speed, double speed... to today's multiples of fifty-two or higher, CD-ROM and The progress of CD-RW is not unpleasant, but also because the technology is changing with each passing day, so its application in multimedia can be more diversified. At the same time, after the practicability of optical discs is gradually improved, it will also bring a new wave to the world of computer information.

The mechanical drive mechanism of the optical drive is mainly used to drive the rotation of the spindle motor and the tracking and focusing of the optical read-write head; but the problem is that when the optical disc rotates at a high speed, the track is often eccentric due to the yaw of the spindle motor and the warping of the optical disc. Or the high-speed rotation of the optical disc causes the internal air pressure of the optical drive to vary, causing the target track to vibrate back and forth between the focusing axis and the radial direction of the optical disc, making it impossible for the optical read-write head to read or burn correct signals.

Please refer to FIG. 1 , which shows a schematic diagram of a tray-type optical drive. The optical drive 100 includes a casing 105 , a tray 110 , a clamping component 120 , a clamping component fixing base 125 and the like. The tray 110 is provided with a disk slot 130 for placing an optical disk 135 .

As shown in FIG. 2A, it depicts the situation inside the optical drive. When the optical disc 135 is inserted into the disc groove 130, the tray 110 enters the interior of the optical drive, and the disc 135 can be firmly held by the clamping element 120 and the turntable 140. The disc 135 can be driven by the turntable 40 at a high speed. It can run smoothly, and the data can be read and written. Usually, in the above-mentioned tray-type optical drive, the clamping component fixing seat 125 is used to fix the clamping component 120. After the optical disc 135 is placed in the tray 110, the tray 110 will bring the optical disc 135 into the optical drive and position it.

FIG. 2B shows a schematic diagram of the clamping element and the turntable clamping the optical disc (FIG. 2B is a cross-sectional view drawn by the section line 2B-2B in FIG. 2A). It represents the interlocking connection between the clamping element 120 and the turntable 140 , and engages against the optical disk 135 to prevent the optical disk 135 from being separated due to rotation. It should be noted that because of the setting of the clamping component fixing seat 125, the space above the optical disc 135 is partially covered (shaded by the clamping component fixing base 125), causing the gas flow field formed when the optical disc 135 rotates at a high speed Shaded places are not the same as unshaded places. Due to the inhomogeneity of the gas flow field, the distribution of the gas flow velocity and air pressure in the space changes, causing the optical disk 135 to vibrate. Since the function of the clamping element fixing seat 125 is to accurately position the clamping element 120 to ensure that it can be correctly combined with the turntable 140, its setting is inevitable, but its setting also makes the optical disc 135 vibrate under the state of high-speed rotation. The occurrence of the situation affects the quality of reading and writing data on the optical disc 135 by the optical head.

It can be seen that, due to above-mentioned design, thus produce following shortcoming:

1. The disc vibrates under high-speed rotation: due to the setting of the clamping component fixing seat, the space above the disc is partially covered, so the airflow velocity formed by the rotating disc will be uneven, making the airflow The pressure gradient of the field is too large, causing the disc to vibrate.

2. It is easy to cause the failure of reading and writing of the disc: due to the vibration of the disc, the rotation of the disc is unstable, so the read head of the optical drive will read the wrong data area on the disc, which requires the disc to be read again after another rotation, and the reading efficiency Therefore, if it is used to burn a CD, it will cause the CD to fail to burn, resulting in the loss of the recordable CD.

Contents of the invention

The object of the present invention is to provide a vibration suppression mechanism for an optical drive, which reduces the vibration generated when the optical disc rotates; reduces the reading failure caused by the vibration of the optical disc, and the reading efficiency is therefore low, and saves the recording failure caused by the vibration of the optical disc. Finally, the time and cost of re-burning are required.

The object of the present invention is achieved by providing a vibration suppression mechanism for an optical drive, the optical drive includes a casing and a clamping element fixing seat, the casing has an inner surface, and the vibration suppression mechanism for the optical drive includes: a The buffer element is arranged on the inner surface corresponding to the outer side of the clamping element fixing base.

The present invention also provides an optical drive with a vibration suppression mechanism. The optical drive includes a casing and a clamping element fixing seat. The casing has an inner surface. The optical drive also includes: a buffer element configured on the clamping element The inner surface corresponding to the outer side of the fixing seat.

Further speaking, the vibration suppression mechanism of the optical drive of the present invention is to configure a buffer element on the outside of the clamping element fixing seat in the optical drive, and on the inner surface of the corresponding optical drive casing, and this buffer element can be foamed soft material or Sponge, the shock suppression mechanism of each optical drive is completed. In this way, the disc will no longer have abnormal vibration due to high-speed rotation.

Description of drawings

Figure 1 is a schematic diagram of a tray-type optical drive;

FIG. 2A is a situation diagram inside the optical drive;

FIG. 2B is a schematic diagram of the clamping element and the turntable clamping the disc;

3A to 3C are schematic diagrams of the optical disk and the clamping component fixing seat;

Fig. 4A is a schematic diagram of buffering elements arranged outside the fixing seat of the clamping element;

Fig. 4B is a situation diagram of disposing the buffer element on the inner surface of the casing in Fig. 4A;

4C to 4D are schematic cross-sectional views of disposing the buffer element on the inner surface of the housing in FIG. 4A;

Fig. 5 is a schematic diagram of another buffer element configuration method provided by a preferred embodiment of the present invention;

Fig. 6 is a schematic diagram of another configuration method of a buffer element provided by a preferred embodiment of the present invention.

Detailed ways

The vibration suppressing mechanism of the optical drive provided by the present invention mainly lies in that the space above the optical disk is partially covered by the clamping element fixing seat due to the setting of the clamping component fixing seat in the optical drive. Therefore, when the optical disc rotates at a high speed, the surrounding air is driven An inhomogeneous gas flow field is formed, causing the pressure gradient of the gas flow field to be too large, resulting in abnormal vibration during the high-speed rotation of the disc. And the cushioning element is arranged outside the fixing seat of the clamping element, so that the optical disk rotating at high speed can still form a uniform gas flow field, so as to suppress the vibration of the optical disk. And this buffer element can be foam soft material or sponge. Its specific implementation method will be described below.

Please refer to FIG. 3A to FIG. 3C , which are schematic diagrams of the optical disk and the clamping component fixing seat. As shown in FIG. 3A , the clamping element fixing base 125 has a first front edge 310 and a second front edge 320, and the optical disk 135 is driven by the turntable, and the optical disk 135 rotates clockwise in the direction of the arrow as shown in the figure. , the space above the optical disc 135 includes a first space 331 , a second space 332 , a third space 333 and a fourth space 334 .

As shown in FIG. 3B and FIG. 3C (FIG. 3B and FIG. 3C are cross-sectional views drawn by the 3B-3B section line and the 3C-3C section line in FIG. 3A respectively), the first space 331 and the third space 333 are for the optical disc 135 and The space between the inner surface of the casing 105 ; and the second space 332 and the fourth space 334 are spaces between the optical disk 135 and the clamping component fixing seat 125 . When the optical disc 135 rotates clockwise, the air in the space above the optical disc 135 will be driven by the optical disc 135. Because the heights of the first space 331 and the second space 332 are different and the heights of the third space 333 and the fourth space 334 are different, Therefore, the air driven will form an uneven gas flow field, and this uneven gas flow field will cause an excessive gas pressure gradient between the second space 332 and the fourth space 334, so that the optical disk 135 will be rotated at a high speed. Abnormal vibration occurs. In order to reduce the pressure gradient caused by setting the clamping element fixing seat 125, buffer elements can be arranged outside the first outer edge 310 at the junction of the first space 331 and the second space 332 and the junction of the third space 333 and the fourth space 334 Buffer elements are arranged outside the second outer edge 320 at the position to adjust the gas flow field and further make it uniform, so that the optical disk 135 will not vibrate during high-speed rotation.

Please refer to FIG. 4A , which shows a schematic diagram of disposing a buffer element outside the fixing seat of the clamping element. The disc rotates in the direction of the arrow clockwise as shown in the figure, and the buffer element 405 can be disposed outside the first outer edge 310 and the second outer edge 320 of the clamping element fixing base 125 .

Please refer to FIG. 4B , which shows the situation of disposing the buffer element on the inner surface of the casing in FIG. 4A . Shown in the figure is the casing 105 that has been opened. It can be seen from the figure that there is a housing space 410 inside the casing 105, and the buffer element 405 is actually arranged on the first outer edge 310 and the second edge of the clamping element fixing seat. The outer side of the outer edge 320 corresponds to the inner surface of the casing 105 .

Please refer to Fig. 4C-Fig. 4D, which show the cross-sectional schematic diagram of disposing the buffer element on the inner surface of the casing in Fig. 4A (Fig. sectional view). 4C and 4D, the buffer element 405 is respectively disposed on the inner surface of the casing corresponding to the outer side of the first outer edge 310 and the outer side of the second outer edge 320, and the thickness of the buffer element 405 needs to make the optical drive after assembly ( After the casing is covered), the vertical distance between the bottom of the buffer element 405 and the optical disc 135 can be equal to the vertical distance between the bottom of the clamping element fixing seat 125 and the optical disc 135, so that the height of the first space is similar to that of the second space. The height of the third space is close to that of the fourth space, which is conducive to making the gas flow field formed by the surrounding (by) air driven by the high-speed rotating disc 35 uniform.

Please refer to FIG. 5 , which is a schematic diagram illustrating another configuration method of a buffer element according to a preferred embodiment of the present invention. The optical disk rotates in the direction of the arrow clockwise as shown in the figure. The length of the side adjacent to the first outer edge 310 of the buffer element 415 shown in the figure is greater than half of the first outer edge 310, so that the buffer element 415 can Completely including the boundary between the first space 331 and the second space 332 can effectively reduce the pressure gradient. The buffer element 415 is also arranged on the outer side of the first outer edge 310 and the outer side of the second outer edge 320 of the clamping element fixing seat 125 correspondingly. on the inner surface of the casing.

Please refer to FIG. 6 , which is a schematic diagram of another configuration method of a buffer element provided according to a preferred embodiment of the present invention. The length of the side adjacent to the first outer edge 310 of the buffer element 415 shown in the figure is equal to the length of the first outer edge 310 , so that the buffer element 415 can completely cover the first space 331 , which can effectively reduce the pressure gradient.

In the above-mentioned two configuration methods of the buffer element, the thickness of the buffer element must reach the vertical distance between the bottom of the buffer element and the optical disc after the casing cover is mounted on, which can be equal to the vertical distance between the bottom of the fixing seat of the clamping element and the optical disc. The purpose is to make the gas flow field formed by the surrounding air driven by the high-speed rotating disc uniform. The configuration of the buffer element can effectively suppress the high-speed rotation of the disc caused by the setting of the clamping component fixing seat of the optical drive. Vibration phenomenon.

In the three methods of the above-mentioned embodiments, the cushioning elements can be foamed soft materials or sponges, and these mechanisms can reduce the vibration of the optical drive to replace the existing mechanism of vibration derived from the configuration without cushioning elements.

It should be noted that the geometric structure of each object in the embodiment is only an example of the present invention, and is not used to limit the applicable conditions of the present invention. Any person familiar with this technology can make adjustments to achieve similar functions to the present invention, but still without departing from the spirit of the invention.

The vibration suppression mechanism of the optical drive disclosed in the above embodiments of the present invention has at least the following advantages:

1. It can reduce the vibration caused by the high-speed rotation of the optical disc: due to the configuration of the buffer element on the inner surface of the optical drive casing, the vibration caused by the surrounding air caused by the high-speed rotation of the optical disc due to the setting of the clamping element fixing seat can be reduced. The formed inhomogeneous gas flow field can be homogenized, and the velocity gradient and pressure gradient of the flow field become smaller, so the vibration phenomenon caused by the high-speed rotation of the optical disc can be reduced.

2. It can effectively improve the success rate of disc burning: when CD-RW burns discs, since the discs no longer vibrate, the optical read-write head can effectively write discs, and the damage rate of discs will be effectively reduced.

3. Save the time of re-burning the disc: If the disc is damaged due to vibration, it will take time to burn again. If there is no vibration factor, the time for re-burning can be saved.

In summary, although the present invention discloses the present invention in conjunction with the above preferred embodiment, it is not intended to limit the present invention, and any person skilled in the art can make various modifications without departing from the spirit and scope of the present invention. Changes and modifications, so the protection scope of the present invention should be defined by the claims.

Claims (7)

1. A vibration suppression mechanism of an optical drive, the optical drive includes a casing and a clamping element fixing seat, the casing has an inner surface, and the vibration suppression mechanism of the optical drive includes: A buffer element is arranged on the inner surface corresponding to the outer side of the clamping element fixing seat. 2. The vibration suppressing mechanism of an optical drive as claimed in claim 1, wherein a vertical distance between the bottom of the buffer element and an optical disk is equal to a vertical distance between the bottom of the clamping element fixing base and the optical disk. 3. The shock suppressing mechanism of an optical drive as claimed in claim 1, wherein the buffer member is made of foamed soft material. 4. The shock suppression mechanism of an optical drive as claimed in claim 1, wherein the buffer element is a sponge. 5. The shock suppressing mechanism of an optical drive according to claim 1, wherein one side of the buffer element is adjacent to the outer side of the clamping element fixing seat, and the length of one side of the buffer element is longer than the outer side of the clamping element fixing seat half the length. 6. The shock suppressing mechanism of an optical drive according to claim 1, wherein one side of the buffer element is adjacent to the outer side of the clamping element fixing seat, and the length of one side of the buffer element is equal to the outer side of the clamping element fixing seat length. 7. An optical drive with a vibration suppression mechanism, the optical drive includes a casing and a clamping element fixing seat, the casing has an inner surface, the optical drive also includes: A buffer element is arranged on the inner surface corresponding to the outer side of the clamping element fixing seat.

Images