WO2024255738A1 - Optical disc drive and electronic device - Google Patents

Abstract

The present application relates to the technical field of optical storage, and provides an optical disc drive and an electronic device, for use in solving the technical problem of poor stability of an optical disc during rotation. The optical disc drive provided in the present application may comprise a housing, a tray, and a supporting mechanism. The housing is provided with an accommodating cavity, and the inner wall of the accommodating cavity has a mounting surface; the tray is located in the accommodating cavity; the tray has a bearing surface used for bearing an optical disc, and the bearing surface and the mounting surface are oppositely arranged. The optical disc drive further comprises a rigid sheet, and the rigid sheet can be arranged on at least one of the mounting surface or the bearing surface. The supporting mechanism is located in the accommodating cavity, and the supporting mechanism enables the optical disc to be suspended between the mounting surface and the bearing surface, and keeps a gap between the optical disc and the rigid sheet. In the optical disc drive provided by embodiments of the present application, by providing the rigid sheet, the volume of air and the motion space of vortex around the optical disc can be effectively reduced, so that the disturbance caused by the vortex to the optical disc is reduced. The stability and safety of the optical disc during rotation can be significantly improved.

Description

Optical disc drive and electronic device

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims priority to the Chinese patent application filed with the State Intellectual Property Office of China on June 13, 2023, with application number 202310698597.0 and application name “A CD-ROM Drive and Electronic Device”, the entire contents of which are incorporated by reference into this application.

Technical Field

The present application relates to the field of optical storage technology, and in particular to an optical disc drive and an electronic device.

Background Art

In the field of optical storage, optical discs are usually used as storage media to store information. With the continuous development of technology, the recording density and capacity of optical discs have been significantly improved. In practical applications, it is necessary to write information into the optical disc for storage or read the information recorded in the optical disc through an optical disc drive. Among them, the optical disc drive mainly includes a mechanism for driving the rotation of the optical disc and a laser head for reading and writing information. At present, the read and write speed of the optical disc drive is generally around 4.5M/s. In order to increase the read and write speed of the optical disc drive, a direct and feasible way is to achieve it by increasing the rotation speed of the optical disc. A higher rotation speed will excite the natural frequency of the optical disc itself, thereby causing the vibration of the optical disc. However, the vibration of the optical disc will reduce the alignment accuracy between the optical disc and the laser head, thereby affecting the stability and efficiency of reading and writing information.

Summary of the invention

The present application provides an optical disc drive and an electronic device which can effectively prevent the vibration of the optical disc.

In the first aspect, the present application provides an optical disc drive, which may include a housing, a tray and a supporting mechanism. The housing has a accommodating cavity, and the inner wall of the accommodating cavity has a mounting surface. The tray is located in the accommodating cavity, and the tray has a supporting surface for supporting the optical disc, and the supporting surface is arranged opposite to the mounting surface. In addition, the optical disc drive also includes a rigid sheet. Among them, the rigid sheet can be arranged on the mounting surface, or the rigid sheet can also be arranged on the supporting surface. Alternatively, the rigid sheet can be arranged on both the mounting surface and the supporting surface. The supporting mechanism is located in the accommodating cavity, and the supporting mechanism can suspend the optical disc between the mounting surface and the supporting surface, and maintain a gap between the optical disc and the rigid sheet. In the optical disc drive provided in the embodiment of the present application, by arranging the rigid sheet, the volume of air around the optical disc and the movement space of the eddy current can be effectively reduced, thereby reducing the disturbance of the eddy current to the optical disc. The stability and safety of the optical disc during rotation can be significantly improved.

In the specific setting, the rigid sheet can be made of metal materials with high rigidity such as copper and steel, or non-metallic materials with high rigidity. The rigid sheet is not easily deformed when impacted by eddy currents. Therefore, it can effectively reduce the energy of eddy currents and reduce the disturbance of eddy currents to the optical disc.

The surface of the rigid sheet facing the optical disc may be a plane, and the surface roughness of the surface may be as small as possible, thereby reducing the intensity of the eddy current generated when the air flows through the surface of the rigid sheet.

In addition, in the specific setting, the gap between the rigid sheet and the optical disc can be less than or equal to 0.8 mm. When the gap between the rigid sheet and the surface of the optical disc is small, the volume of air between the rigid sheet and the optical disc can be effectively reduced. When the optical disc rotates at a high speed, the intensity of the eddy current generated on the surface of the optical disc is small, and it is not easy to cause the optical disc to vibrate significantly. In addition, a reasonable gap is not easy to cause mechanical collision between the optical disc and the rigid sheet, which is conducive to ensuring the safety of the use of the optical disc.

In one example, the projection of the optical disc on the rigid sheet may be located within the outline of the rigid sheet. For example, the shape outlines of the rigid sheet and the optical disc may be substantially the same, and the size of the rigid sheet may be equal to or slightly larger than the size of the optical disc. Of course, in specific settings, the shape outlines of the rigid sheet and the optical disc may also be different, which will not be described in detail here.

In one example, the edge of the rigid sheet may have a protrusion. That is, the protrusion on the rigid sheet can effectively position the optical disc. When the optical disc is placed on the surface of the rigid sheet, the protrusion can be arranged around the edge of the optical disc, thereby effectively positioning the optical disc. In addition, under the effect of the protrusion, it is convenient for the rigid sheet to have a certain wrapping effect on the optical disc, so that the volume of air around the optical disc is as low as possible, thereby reducing the disturbance of the eddy current to the optical disc.

In a specific configuration, the tray may be slidably disposed on the housing, and the sliding direction of the tray is parallel to the mounting surface, so as to facilitate the taking and placing of the optical disc.

In one example, the support mechanism may include a support plate, a first fixed head, and a second fixed head. The support plate is slidably disposed in the accommodating cavity, and the sliding direction of the support plate is perpendicular to the mounting surface. The first fixed head is rotatably disposed on the housing, and the first fixed head has a first fitting surface. The second fixed head is rotatably disposed on the support plate, and the second fixed head has a second fitting surface. The first fitting surface and the second fitting surface The optical disc drive is arranged relative to each other and is used to clamp and fix the optical disc. The support plate is located on the side of the tray away from the supporting surface, and the tray has a through hole for the second fixed head to pass through. The position of the optical disc can be controlled with high precision through the support mechanism, thereby improving the convenience and reliability during use. In the specific setting, the optical disc drive can also include a motor, which is transmission-connected to the first fixed head or the second fixed head, and is used to drive the first fixed head or the second fixed head to rotate, thereby driving the optical disc to rotate.

In one example, the optical disc drive further includes a first laser head which is slidably disposed on the support plate, and the tray has a notch for the first laser head to pass through, so that the laser head can read and write the optical disc.

In one example, the optical disc drive may further include a second laser head. The second laser head may be disposed on the support plate, and the tray may have a notch for the second laser head to pass through. Alternatively, the second laser head may be disposed on the housing and disposed opposite to the first laser head.

In general, the optical disc drive may include one, two or more laser heads. By increasing the number of laser heads, the information reading and writing efficiency of the optical disc drive can be effectively improved. In addition, in the specific setting, when the number of laser heads is two or more, the laser heads can be located on the same side of the optical disc, or the laser heads can be distributed on both sides of the optical disc.

In a second aspect, the present application also provides an electronic device, which may include a controller and the above-mentioned optical disc drive, wherein the controller may be connected to the support mechanism signal, thereby effectively controlling the posture of the support mechanism or the running state of the motor, so as to effectively control the position and rotation speed of the optical disc.

By using the above optical disc drive, the stability of the electronic device when reading and writing information on the optical disc can be effectively improved. In addition, the optical disc is not easy to produce obvious vibration when rotating at high speed, which can effectively improve the efficiency and reliability of information reading and writing.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of the structure of a conventional optical disc drive provided in an embodiment of the present application;

FIG2 is a schematic diagram of a local structure of an optical disc after deformation provided by an embodiment of the present application;

FIG3 is a schematic diagram of the structure of an optical disc drive provided by an embodiment of the present application;

FIG4 is a data simulation diagram of a non-repetitive beat frequency domain of an optical disk drive provided by an embodiment of the present application;

FIG5 is a data simulation diagram of non-repetitive beat frequency domain of a conventional optical disk drive provided by an embodiment of the present application;

FIG6 is a schematic diagram of the superposition of the data simulation diagrams of FIG4 and FIG5 ;

FIG7 is a schematic diagram of the structure of an optical disc drive provided in an embodiment of the present application;

FIG8 is a plan view of a rigid sheet provided in an embodiment of the present application;

FIG9 is a schematic diagram of the structure of another optical disc drive provided in an embodiment of the present application;

FIG10 is a plan view of another rigid sheet provided in an embodiment of the present application;

FIG11 is a plan view of another rigid sheet provided in an embodiment of the present application;

FIG12 is a schematic diagram of the structure of another optical disc drive provided in an embodiment of the present application;

FIG13 is a schematic diagram of the structure of another optical disc drive provided in an embodiment of the present application;

FIG14 is a schematic diagram of the structure of another optical disc drive provided in an embodiment of the present application;

FIG. 15 is a simplified schematic diagram of the structure of an electronic device provided in an embodiment of the present application.

DETAILED DESCRIPTION

In order to make the objectives, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings.

In order to facilitate understanding of the optical disc drive provided in the embodiment of the present application, its application scenario is first introduced below.

An optical drive, also known as an optical drive, is a device used to read or write information from an optical disc. An optical drive can be used in electronic devices such as desktop computers and laptops. Alternatively, an optical drive can be an independent device that can be connected to a desktop computer, laptop, vehicle, or other device through a cable or wireless transmission.

As shown in FIG1 , the optical disc drive 01 mainly includes a mechanism 011 for driving the optical disc 02 to rotate and a laser head 012 for reading and writing information. Currently, the read and write speed of the optical disc drive 01 is generally about 4.5 M/s. In order to increase the read and write speed of the optical disc drive 01, it can be achieved by increasing the rotation speed of the optical disc 02.

As shown in FIG2 , a higher rotation speed will excite the natural frequency of the optical disc 02 itself, causing the optical disc 02 to deform perpendicular to the plane A where the optical disc 02 is located, thereby inducing the vibration of the optical disc 02. However, the vibration of the optical disc 02 will reduce the alignment accuracy between the optical disc 02 and the laser head 012, which will affect the stable reading and writing of information. Specifically, when the optical disc 02 rotates at a high speed, the air around the optical disc 02 will generate a vortex, thereby forming a Karman vortex street phenomenon. The eddy current will excite the optical disc 02 to resonate, which will reduce the accuracy and efficiency of the optical disc drive 01 when reading and writing the optical disc 02. In addition, when the vibration amplitude of the optical disc 02 is too large, it will cause the optical disc 02 to break. Therefore, it has a large safety hazard. Suffer from.

To this end, an embodiment of the present application provides an optical disc drive that can effectively increase the rotation speed of the optical disc and reduce the vibration of the optical disc.

In order to make the objectives, technical solutions and advantages of the present application more clear, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

The terms used in the following embodiments are only for the purpose of describing specific embodiments and are not intended to be used as limitations on the present application. As used in the specification and appended claims of the present application, the singular expressions "one", "a kind of" and "the" are intended to also include expressions such as "one or more", unless there is a clear indication to the contrary in the context. It should also be understood that in the following embodiments of the present application, "at least one" refers to one, two or more than two.

References to "one embodiment" and the like described in this specification mean that a particular feature, structure or characteristic described in conjunction with the embodiment is included in one or more embodiments of the present application. Thus, the phrases "in one embodiment", "in some embodiments", "in other embodiments", etc. that appear at different places in this specification do not necessarily all refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "including", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways.

As shown in FIG3 , in an example provided in the present application, the optical disc drive 10 may include a housing 11, a tray 12 and a support mechanism 13. The housing 11 has a housing 110, and the inner wall of the housing 110 has a mounting surface 111. The tray 12 is located in the housing 110, and the tray 12 has a supporting surface 121 for supporting the optical disc 02, and the supporting surface 121 is arranged opposite to the mounting surface 111. In addition, the optical disc drive 10 also includes a rigid sheet 14a and a rigid sheet 14b. Among them, the rigid sheet 14b is arranged on the mounting surface 111, and the rigid sheet 14a is arranged on the supporting surface 121. The support mechanism 13 is located in the housing 110, and the support mechanism 13 can suspend the optical disc 02 between the mounting surface 111 and the supporting surface 121, and keep a gap between the optical disc 02 and the rigid sheet 14a and the rigid sheet 14b. Among them, the components and working methods of the support mechanism 13 will be described in detail below, and will not be repeated here.

In the optical disc drive 10 provided in the embodiment of the present application, by providing the rigid sheets 14 a and 14 b , the volume of air around the optical disc 02 and the movement space of the eddy current can be effectively reduced, thereby reducing the disturbance of the eddy current to the optical disc 02 .

Or it can be understood that when the rigid sheet 14a and the rigid sheet 14b are not provided, the gap between the optical disc 02 and the mounting surface 111 is larger, and the gap between the optical disc 02 and the supporting surface 121 is larger. This allows more air to remain between the optical disc 02 and the mounting surface 111 and between the optical disc 02 and the supporting surface 121. When the optical disc 02 rotates at high speed, it will drive the air around the optical disc 02 to move and generate eddy currents. In addition, since there is more air remaining around the optical disc 02, the flow space and flow energy of the eddy current are larger, which can easily produce a large impact on the optical disc 02 and cause the optical disc 02 to vibrate significantly. In the example provided in the present application, by providing the rigid sheet 14b on the mounting surface 111 and the rigid sheet 14a on the supporting surface 121, the space for accommodating air around the optical disc 02 can be significantly reduced, thereby reducing the flow space and flow energy of the eddy current, and significantly improving the stability and safety of the optical disc 02 during rotation.

In addition, the rigid sheet 14a and the rigid sheet 14b can both be made of metal materials with high rigidity such as copper and steel, or non-metallic materials with high rigidity. The rigid sheet 14a and the rigid sheet 14b are not easily deformed when impacted by eddy currents. Therefore, the energy of the eddy currents can be effectively reduced, and the disturbance of the eddy currents to the optical disc 02 can be reduced.

Or it can be understood that, in practical applications, the housing 11 and the tray 12 can be made of materials with lower hardness, such as plastics and resins. When the rigid sheet 14a and the rigid sheet 14b are not provided, the mounting surface 111 of the housing 11 and the supporting surface 121 of the tray 12 are easily deformed when facing the impact of eddy currents, thereby aggravating the instability of the air when flowing, and may worsen the instability of the optical disc 02 when rotating. In the example provided in the present application, since the rigid sheet 14a and the rigid sheet 14b both have higher hardness, the rigid sheet 14a and the rigid sheet 14b are not easily deformed when impacted by eddy currents, and therefore, the energy of the eddy currents can be effectively reduced, and the disturbance of the eddy currents to the optical disc 02 can be reduced.

As shown in FIG. 4 and FIG. 5 , the embodiment of the present application further provides data simulation diagrams of non-repeatable runout (NRRO) frequency domain when the optical disc drive 10 has and does not have the rigid plate 14a and the rigid plate 14b.

Specifically, Fig. 5 shows a non-repetitive jitter frequency domain data diagram obtained by simulation when the rigid sheet 14a and the rigid sheet 14b are not provided in the optical disk drive 10. The horizontal axis represents frequency in Hz, and the vertical axis represents noise in dB.

4 shows a non-repetitive jitter frequency domain data diagram obtained by simulation after the rigid sheet 14a and the rigid sheet 14b are arranged in the optical disk drive 10. The horizontal axis represents the frequency in Hz, and the vertical axis represents the noise in dB.

FIG6 is a superposition of the simulation data in FIG4 and FIG5. The lighter colored part can be considered as the simulation data in FIG4, and the darker colored part can be considered as the simulation data in FIG5. It can be clearly seen from FIG6 that after the rigid sheet 14a and the rigid sheet 14b are provided in the optical disc drive 10, the noise of the optical disc drive 10 when reading and writing information on the optical disc is significantly reduced.

For example, the non-repetitive error signal can be reduced from about 8.4% to about 5.5%.

As shown in FIG. 3 , in actual application, the specific size of the gap between the rigid sheet 14 a , the rigid sheet 14 b and the optical disc 02 may be various.

For example, in actual application, the gap between the rigid sheet 14a and the surface of the optical disc 02 (such as the lower surface in FIG. 3 ) can be less than or equal to 0.8 mm. The gap between the rigid sheet 14b and the surface of the optical disc 02 (such as the upper surface in FIG. 3 ) can be less than or equal to 0.8 mm. When the gap between the rigid sheet 14a and the surface of the optical disc 02 is smaller, the volume of air between the rigid sheet 14a and the optical disc 02 can be effectively reduced. Correspondingly, when the gap between the rigid sheet 14b and the surface of the optical disc 02 is smaller, the volume of air between the rigid sheet 14b and the optical disc 02 can be effectively reduced. When the optical disc 02 rotates at a higher speed, the intensity of the eddy current generated on the surface of the optical disc 02 is smaller, and it is not easy to cause the optical disc 02 to vibrate significantly.

It is understood that, in actual application, the size of the gap between the rigid sheet 14a and the surface of the optical disc 02 can be any value below 0.8 mm, such as 0.1 mm, 0.2 mm, or 0.7 mm. The size of the gap between the rigid sheet 14b and the surface of the optical disc 02 can be any value below 0.8 mm, such as 0.1 mm, 0.2 mm, or 0.7 mm. Among them, the sizes of the gaps between the optical disc 02 and the rigid sheets 14a and 14b can be the same or different, which will not be elaborated here.

In addition, in the example provided by the present application, since the rigid sheet 14a and the rigid sheet 14b are used, it is helpful to reduce the difficulty of manufacturing the optical disc drive 10 and ensure a high precision. For example, during manufacturing, the rigid sheet 14a and the rigid sheet 14b can be separately manufactured and formed. Since the structural shapes of the rigid sheet 14a and the rigid sheet 14b are relatively simple, it has the advantage of being easy to manufacture and can effectively ensure the manufacturing precision of the rigid sheet 14a and the rigid sheet 14b. In addition, the surface roughness of the rigid sheet 14a and the rigid sheet 14b can be effectively controlled, which is helpful to ensure the stability of the optical disc drive 10 during operation.

In addition, the provision of the rigid sheet 14 a and the rigid sheet 14 b will not significantly increase the weight of the optical disc drive 10 , which is conducive to achieving a lightweight design of the optical disc drive 10 .

For example, the housing 11 and the tray 12 of the optical disk drive 10 can be made of currently commonly used materials such as plastic or resin, thereby reducing the weight and manufacturing cost of the optical disk drive 10. In addition, since the rigid sheet 14a and the rigid sheet 14b can also provide good structural strength, the housing 11 and the tray 12 can also be made of other lighter materials. This is conducive to further reducing the weight of the optical disk drive 10 and can also expand the flexibility of the housing 11 and the tray 12 in material selection.

In practical applications, the surface of the rigid sheet 14a facing the optical disc 02 can be a plane, and the surface roughness of the surface can be as small as possible, so as to reduce the intensity of the eddy current generated when the air flows through the surface of the rigid sheet 14a. Correspondingly, the surface of the rigid sheet 14b facing the optical disc 02 can be a plane, and the surface roughness of the surface can be as small as possible, so as to reduce the intensity of the eddy current generated when the air flows through the surface of the rigid sheet 14b.

In addition, as shown in FIG3 , in an example provided by the present application, a protrusion 122 may be provided on one side of the supporting surface 121 of the tray 12. The protrusion 122 may effectively position the optical disc 02, thereby limiting the optical disc 02 to a predetermined position of the tray 12. The protrusion 122 may be annular, and when the optical disc 02 is placed on the surface of the rigid sheet 14a, the protrusion 122 may surround the edge of the optical disc 02, thereby effectively positioning the optical disc 02, and preventing a larger position deviation between the optical disc 02 and the tray 12.

In a specific configuration, the rigid sheet 14a and the rigid sheet 14b may be roughly circular sheets, and the outer diameters of the rigid sheet 14a and the rigid sheet 14b may be larger than the outer diameter of the optical disc 02. That is, the projection of the optical disc 02 on the rigid sheet 14a may be located within the outline of the rigid sheet 14a. Alternatively, the projection of the optical disc 02 on the rigid sheet 14b may be located within the outline of the rigid sheet 14b.

The structures and sizes of the rigid sheet 14 a and the rigid sheet 14 b may be the same or different. In addition, in some examples, the outer diameters of the rigid sheet 14 a and the rigid sheet 14 b may be substantially the same as the outer diameter of the optical disc 02 .

Of course, in some examples, the protruding structure may also be provided on the rigid sheet 14a or the rigid sheet 14b, or may also be provided on both the rigid sheet 14a and the rigid sheet 14b.

For example, as shown in FIG. 7 , in an example provided in the present application, a protrusion 141a may be further provided on the edge of the rigid sheet 14a, and the protrusion 122 on the tray 12 may be omitted. That is, the protrusion 141a on the rigid sheet 14a may effectively position the optical disc 02. When the optical disc 02 is placed on the surface of the rigid sheet 14a, the protrusion 141a may be provided around the edge of the optical disc 02, thereby effectively positioning the optical disc 02.

In practical application, the rigid sheet 14a can be manufactured separately, thus, it is beneficial to improve the convenience during manufacturing. In addition, the manufacturing accuracy of the protrusion 141a can be well guaranteed, and the position accuracy between the optical disc 02 and the tray 12 or the rigid sheet 14a can be improved.

In the specific configuration, the height dimension of the protrusion 141a is greater than the thickness dimension of the optical disc 02. Alternatively, the top of the protrusion 141a can abut against or maintain a small gap with the rigid sheet 14b. Alternatively, it can be understood that, under the action of the protrusion 141a, the rigid sheets 14a and 14b can have a certain wrapping effect on the optical disc 02, so that the volume of air around the optical disc 02 is as low as possible, thereby reducing the disturbance of the eddy current to the optical disc 02.

Of course, in other examples, the height dimension of the protrusion 141a may also be less than or equal to the thickness dimension of the optical disc 02. In addition, a protrusion may also be provided on the surface of the rigid sheet 14b facing the rigid sheet 14a. The protrusion 141a in the rigid sheet 14a and the protrusion in the rigid sheet 14b may be arranged relative to each other or staggered. In practical applications, the setting position and size of the protrusion may be reasonably adjusted according to actual needs, which will not be elaborated here.

It is understandable that in the above example, the optical disc drive 10 includes the rigid sheet 14a and the rigid sheet 14b. However, in actual application, the optical disc drive 10 may include only one rigid sheet. That is, the optical disc drive 10 may include only the rigid sheet 14a or only the rigid sheet 14b. The number of rigid sheets is not limited in this application.

In addition, in specific applications, the optical disc drive 10 may also include a laser head 15. The laser head 15 may include a laser diode, a lens, a light detector, and mechanical components for driving the movement of the laser head 15. Among them, the laser diode can generate a laser beam, and the laser beam can be irradiated on the recording surface of the optical disc 02 (such as the lower surface in Figure 7) after being processed by the lens. Among them, when writing information, the laser beam can cause etching or other chemical reactions on the recording surface of the optical disc 02, thereby changing the light beam reflection of the recording surface. When reading information, the laser beam generated by the laser diode can be irradiated on the recording surface of the optical disc 02 after being processed by the lens and reflected, and then the reflected laser beam is received by the light detector for identification. The controller can obtain the information stored in the optical disc 02 according to the intensity of the reflected light beam received by the light detector.

In practical applications, the components such as the laser head 15 included in the optical disc drive 10 for realizing the signal reading function can adopt the currently more commonly used types, which will not be described in detail here.

In the specific configuration, one, two or more laser heads 15 may be provided. In addition, when there are more than two laser heads 15 , the multiple laser heads 15 may be located on the same side of the optical disc 02 or on both sides of the optical disc 02 .

For example, as shown in FIG7 , in an example provided in the present application, the optical disc drive 10 may include a laser head 15, and the laser head 15 is disposed on a side of the tray 12 away from the supporting surface 121. As shown in FIG7 and FIG8 , the tray 12 and the rigid sheet 14a have a notch 142a for the laser head 15 to penetrate, so that the laser beam generated by the laser head 15 can be effectively projected toward the optical disc 02 without being blocked by the tray 12 and the rigid sheet 14a.

In actual application, when the laser head 15 reads and writes data on the optical disc 02, there is a need to move radially along the optical disc 02. Therefore, in the example provided in the present application, the notches 142a of the tray 12 and the rigid sheet 14a are both long strips extending radially.

In addition, as shown in FIG9 , in another example provided in the present application, two laser heads, namely a first laser head 15a and a second laser head 15b, are provided on the side of the rigid sheet 14a away from the optical disc 02. As shown in FIG9 and FIG10 , the tray 12 and the rigid sheet 14a have a notch 142a for the laser head 15 to penetrate, so that the laser beam generated by the laser head 15 can be effectively projected toward the optical disc 02 without being blocked by the tray 12 and the rigid sheet 14a.

As shown in FIG. 11 , since the laser head 15 is not disposed on the side of the rigid sheet 14 b facing away from the optical disc 02 , the rigid sheet 14 b is disc-shaped and has no notch for the laser head 15 to pass through.

Of course, in other examples, when the laser head 15 is also provided on the side of the rigid sheet 14b away from the optical disc 02, a notch that is the same as or similar to the notch 142a may also be provided in the rigid sheet 14b, which will not be elaborated herein.

For example, as shown in FIG12 , in another example provided in the present application, a first laser head 15a is provided on the side of the rigid sheet 14a away from the optical disc 02, and a second laser head 15b is provided on the side of the rigid sheet 14b away from the optical disc 02, and the first laser head 15a and the second laser head 15b are arranged opposite to each other. Therefore, a notch is provided in the rigid sheet 14a for the first laser head 15a to pass through, and a notch 141b is provided in the rigid sheet 14b for the second laser head 15b to pass through.

When the tray 12 is arranged, the tray 12 may be fixed in the housing 11 , or the tray 12 may be slidably arranged in the housing 11 .

For example, in an example provided in the present application, the tray 12 is slidably arranged on the housing 11. Specifically, the tray 12 and the housing 11 can be slidably connected by a structure such as a slide rail, so that the tray 12 can slide out of the housing 11 or slide into the housing 11. In addition, the optical disc drive 10 can also include a motor, which can be connected to the tray 12 by a structure such as a gear, so that the motor can drive the tray 12 to slide. Among them, when it is necessary to place or remove the optical disc 02, the tray 12 can slide out of the housing 11 under the drive of the motor, so as to place the optical disc 02 on the tray 12 or remove the optical disc 02 from the tray 12. When in use, the tray 12 can slide into the housing 110 of the housing 11 under the drive of the motor, so that the housing 11 can effectively protect the tray 12. When there is an optical disc 02 on the tray 12, the tray 12 can also drive the optical disc 02 to the desired position.

It should be noted that, in actual applications, the movement mode of the tray 12 and the mechanism for driving the movement of the tray 12 can adopt the currently more commonly used types, and this application does not limit this.

In addition, as shown in FIG. 13 and FIG. 14 , in an example provided in the present application, the optical disc drive 10 may further include a supporting mechanism 13 . The support mechanism 13 may include a support plate 131, a first fixed head 132 and a second fixed head 133. The support plate 131 is slidably disposed in the accommodating cavity 110, and the sliding direction of the support plate 131 is perpendicular to the mounting surface 111. The first fixed head 132 is rotatably disposed on the housing 11, and the first fixed head 132 has a first fitting surface 1321. The second fixed head 133 is rotatably disposed on the support plate 131, and the second fixed head 133 has a second fitting surface 1331. The first fitting surface 1321 and the second fitting surface 1331 are disposed opposite to each other, and are used to clamp and fix the optical disc 02. The support plate 131 is located on the side of the tray 12 that is away from the supporting surface 121, and the tray 12 has a through hole for the second fixed head 133 to pass through.

In FIG. 13 , the support plate 131 is in a position before being moved or lifted, and in FIG. 14 , the support plate 131 is in a position after being moved or lifted. At this time, the optical disc 02 is clamped and fixed between the first bonding surface 1321 and the second bonding surface 1331 .

In actual application, the second fixed head 133 can be immovably arranged on the housing 11 and can generate rotational motion. When the support plate 131 moves toward the direction of the second fixed head 133, the first fixed head 132 follows the support plate 131 to move toward the direction of the second fixed head 133. Among them, the top of the second fixed head 133 is a convex structure, and the protrusion in the middle of the top of the first fixed head 132 can pass through the central through hole 021 of the optical disc 02, so as to ensure that the rotation center of the optical disc 02 roughly coincides with the rotation center of the first fixed head 132. The first fitting surface 1321 of the first fixed head 132 can be against the surface of the optical disc 02 (such as the lower surface in Figure 14), and lift the optical disc 02, so that the optical disc 02 is separated from the rigid sheet 14a, and the second fitting surface 1331 of the second fixed head 133 is against the surface of the optical disc 02 (such as the upper surface in Figure 14). That is, the optical disc 02 can be clamped between the first bonding surface 1321 and the second bonding surface 1331, and a reasonable gap is maintained between the optical disc 02 and the rigid sheets 14a and 14b.

In addition, in the example provided in the present application, the laser head 15 is disposed on the support plate 131 and can move with the support plate 131. When the support plate 131 is lifted upward, the laser head 15 can pass through the notch 141b on the tray 12 and the rigid sheet 14a, so that the laser head 15 can read and write the optical disc 02.

In the example provided in the present application, the first fixed head 132 is an active rotating member, and the second fixed head 133 is a driven rotating member. That is, the optical disc drive 10 also includes a motor for driving the first fixed head 132 to rotate. When the optical disc 02 is clamped between the first fitting surface 1321 and the second fitting surface 1331, the motor can drive the first fixed head 132 to rotate, and under the action of the clamping force, the optical disc 02 and the second fixed head 133 can rotate synchronously with the first fixed head 132.

It is understandable that, in other examples, the second fixed head 133 may be an active rotating member, and the first fixed head 132 may be a driven rotating member, and the present application does not impose any limitation on this.

Of course, in the specific configuration, the optical disc drive 10 may also include a motor and a transmission component for driving the support plate 131 and the laser head 15. The configuration of the tray 12, the first fixed head 132, the second fixed head 133 and the laser head 15 and the corresponding transmission components may adopt the currently commonly used types, which will not be described in detail here.

In actual application, the optical disc drive 10 can be used as an independent device, or the optical disc drive 10 can also be applied to electronic devices such as desktop computers and notebook computers.

For example, as shown in FIG15 , an embodiment of the present application further provides an electronic device 20. It may include a controller 21 and an optical disc drive 10. Specifically, the electronic device is a desktop computer. The desktop computer may include a chassis 22 and components such as a controller 21 and a power module 23 disposed in the chassis 22. The optical disc drive 10 may be installed in the chassis 22 and connected to components such as the controller 21 and the power module 23. The controller 21 may be connected to the optical disc drive 10 by signal and may be used to control the working state of the optical disc drive 10. Specifically, the controller 21 may be a central processing unit or a slave processor in a desktop computer. In some examples, the optical disc drive 10 may also be equipped with an independent processor, which is not limited by the present application.

In specific settings, the controller 21 can be connected to the motor signal in the support mechanism 13, and can be used to control the running state of the motor, thereby effectively controlling the position of the tray 12. Alternatively, the controller 21 can also be connected to other corresponding motor signals in the optical disc drive 10, so as to effectively control the rotation speed of the optical disc or the position of the laser head. Among them, the optical disc drive 10 can be set in the chassis 22 in a relatively conventional manner, and the control method and setting method of the optical disc drive 10 are not limited in this application.

The above are only specific implementations of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims (12)

An optical disc drive, comprising: The housing has a receiving cavity, and the receiving cavity has a mounting surface; A tray is located in the container, the tray has a supporting surface, and the supporting surface is arranged opposite to the mounting surface; A rigid sheet, disposed at at least one of the mounting surface or the supporting surface; A supporting mechanism, located in the accommodating cavity; The supporting mechanism is used to suspend the optical disc between the mounting surface and the supporting surface, and there is a gap between the optical disc and the rigid sheet. The optical disc drive according to claim 1, characterized in that the rigid sheet is a metal sheet. The optical disc drive according to claim 1 or 2, characterized in that the surface of the rigid sheet facing the optical disc is flat. The optical disc drive according to any one of claims 1 to 3, characterized in that the gap between the rigid plate and the optical disc is less than or equal to 0.8 mm. The optical disc drive according to any one of claims 1 to 4, characterized in that a projection of the optical disc on the rigid sheet is located within a contour of the rigid sheet. The optical disc drive according to any one of claims 1 to 5, characterized in that an edge of the rigid sheet has a protrusion. The optical disc drive according to any one of claims 1 to 6, characterized in that the tray is slidably disposed on the housing, and a sliding direction of the tray is parallel to the mounting surface. The optical disc drive according to any one of claims 1 to 7, characterized in that the supporting mechanism comprises: A support plate is slidably disposed in the accommodating cavity, and a sliding direction of the support plate is perpendicular to the mounting surface; A first fixing head is rotatably disposed on the housing, and the first fixing head has a first fitting surface; A second fixing head is rotatably disposed on the support plate, and the second fixing head has a second fitting surface; The first fitting surface and the second fitting surface are arranged opposite to each other and are used for clamping and fixing the optical disc; Wherein, the support plate is located on a side of the tray away from the supporting surface, and the tray has a through hole for the second fixing head to pass through. The optical disc drive according to claim 8, characterized in that the optical disc drive further comprises a first laser head; The first laser head is slidably arranged on the support plate, and the tray has a notch for the first laser head to pass through. The optical disc drive according to claim 9, characterized in that the optical disc drive further comprises a second laser head; The second laser head is arranged on the support plate, and the tray has a notch for the second laser head to pass through; Alternatively, the second laser head is disposed on the housing and is arranged opposite to the first laser head. The optical disc drive according to any one of claims 8 to 10 is characterized in that the optical disc drive also includes a motor, which is drivingly connected to the first fixed head or the second fixed head and is used to drive the first fixed head or the second fixed head to rotate. An electronic device, characterized in that it comprises a controller and an optical disc drive as described in any one of claims 1 to 11, wherein the controller is communicatively connected with the supporting mechanism and is used to control the posture of the supporting mechanism.