Optical disc drive and electronic device

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

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] 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

[0003] 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

[0004] In the field of optical storage, optical discs are commonly used as storage media for information. With the continuous advancement of technology, the recording density and capacity of optical discs have significantly improved. In practical applications, an optical disc drive is required to write information to the optical disc for storage or to read the information recorded on the optical disc. An optical disc drive primarily includes a mechanism for driving the optical disc to rotate and a laser head for reading and writing information. Currently, the read and write speed of an optical disc drive is generally around 4.5M / s. In order to increase the read and write speed of an optical disc drive, a direct and feasible way to achieve this is to increase the rotational speed of the optical disc. A higher rotational speed will excite the natural frequency of the optical disc itself, thereby causing the disc to vibrate. 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 information reading and writing.

[0005] Summary of the Invention

[0006] The present application provides an optical disc drive and an electronic device that can effectively prevent optical disc vibration.

[0007] In a first aspect, the present application provides an optical disc drive, which may include a housing, a tray, and a support 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 plate. The rigid plate can be arranged on the mounting surface, or the rigid plate can be arranged on the supporting surface. Alternatively, the rigid plate can be arranged on both the mounting surface and the supporting surface. The support mechanism is located in the accommodating cavity, and the support 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 plate. In the optical disc drive provided in the embodiment of the present application, the provision of the rigid plate can effectively reduce the volume of air around the optical disc and the movement space of the eddy current, thereby reducing the disturbance of the eddy current on the optical disc. The stability and safety of the optical disc during rotation can be significantly improved.

[0008] In the specific setting, the rigid plate can be made of metal materials with high rigidity such as copper, steel, or non-metallic materials with high rigidity. The rigid plate 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.

[0009] The surface of the rigid sheet facing the optical disc may be a plane, and the surface roughness of the plane may be as small as possible, thereby reducing the intensity of eddy currents generated when air flows over the surface of the rigid sheet.

[0010] Furthermore, in a specific configuration, the gap between the rigid plate and the optical disc can be less than or equal to 0.8 mm. A smaller gap between the rigid plate and the optical disc surface effectively reduces the volume of air between the rigid plate and the optical disc. When the optical disc rotates at a higher speed, the eddy currents generated on the disc surface are less intense, less likely to cause noticeable vibration. Furthermore, a reasonable gap also minimizes mechanical collisions between the optical disc and the rigid plate, ensuring safe use of the optical disc.

[0011] In one example, the projection of the optical disc on the rigid sheet can be within the outline of the rigid sheet. For example, the shape and outline of the rigid sheet and the optical disc can be substantially the same, and the dimensions of the rigid sheet can be equal to or slightly larger than the dimensions of the optical disc. Of course, in specific configurations, the shape and outline of the rigid sheet and the optical disc can also differ, which is not detailed here.

[0012] In one example, the edge of the rigid sheet can have protrusions. Specifically, the protrusions on the rigid sheet can effectively position the optical disc. When the optical disc is placed on the surface of the rigid sheet, the protrusions can surround the edge of the disc, effectively positioning the disc. Furthermore, the protrusions can help the rigid sheet wrap around the disc to a certain extent, minimizing the volume of air around the disc and thus reducing eddy current disturbances.

[0013] 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.

[0014] 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 arranged in the accommodating cavity, and the sliding direction of the support plate is perpendicular to the mounting surface. The first fixed head is rotatably arranged on the housing, and the first fixed head has a first fitting surface. The second fixed head is rotatably arranged on the support plate, and the second fixed head has a second fitting surface. The first fitting surface and the second fitting surface are arranged opposite to each other and are 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 may further 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.

[0015] 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 on the optical disc.

[0016] 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 opposite the first laser head.

[0017] In general, an optical disc drive may include one, two, or more laser heads. Increasing the number of laser heads can effectively improve the drive's information reading and writing efficiency. Furthermore, when there are two or more laser heads, they can all be located on the same side of the disc, or they can be distributed on both sides of the disc.

[0018] In a second aspect, the present application further provides an electronic device that may include a controller and the aforementioned optical disc drive. The controller may be connected to a support mechanism via signals to effectively control the support mechanism's posture or the motor's operating state, thereby effectively controlling the position and rotation speed of the optical disc.

[0019] By using the above optical disc drive, the stability of electronic devices when reading and writing information on optical discs can be effectively improved. In addition, the optical disc is less likely 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

[0020] FIG1 is a schematic structural diagram of a conventional optical disc drive provided in an embodiment of the present application;

[0021] FIG2 is a schematic diagram of a partial structure of an optical disc after deformation provided by an embodiment of the present application;

[0022] FIG3 is a schematic structural diagram of an optical disc drive provided in an embodiment of the present application;

[0023] FIG4 is a data simulation diagram of a non-repetitive beat frequency domain of an optical disc drive provided by an embodiment of the present application;

[0024] FIG5 is a data simulation diagram of non-repetitive jitter frequency domain of a conventional optical disc drive provided by an embodiment of the present application;

[0025] FIG6 is a schematic diagram of the superposition of the data simulation diagrams of FIG4 and FIG5;

[0026] FIG7 is a schematic structural diagram of an optical disc drive provided in an embodiment of the present application;

[0027] FIG8 is a plan view of a rigid sheet provided in an embodiment of the present application;

[0028] FIG9 is a schematic structural diagram of another optical disc drive provided in an embodiment of the present application;

[0029] FIG10 is a plan view of another rigid sheet provided in an embodiment of the present application;

[0030] FIG11 is a plan view of another rigid sheet provided in an embodiment of the present application;

[0031] FIG12 is a schematic structural diagram of another optical disc drive provided in an embodiment of the present application;

[0032] FIG13 is a schematic structural diagram of another optical disc drive provided in an embodiment of the present application;

[0033] FIG14 is a schematic structural diagram of another optical disc drive provided in an embodiment of the present application;

[0034] FIG15 is a simplified schematic diagram of the structure of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solutions and advantages of this application clearer, this application will be further described in detail below with reference to the accompanying drawings.

[0036] To facilitate understanding of the optical disc drive provided in the embodiment of the present application, its application scenario is first introduced below.

[0037] An optical disc drive (CD-ROM) is a device used to read or write information onto a disc. It can be found in electronic devices like desktop computers and laptops. Alternatively, it can be a standalone device that connects to a computer, laptop, vehicle, or other device via a cable or wirelessly.

[0038] As shown in Figure 1, an optical disc drive 01 primarily includes a mechanism 011 for rotating an optical disc 02 and a laser head 012 for reading and writing information. Currently, the read and write speed of an optical disc drive 01 is generally around 4.5 Mbps. To increase the read and write speed of an optical disc drive 01, the rotation speed of the optical disc 02 can be increased.

[0039] As shown in Figure 2, a high rotational speed will excite the natural frequency of the optical disc 02 itself, causing the optical disc 02 to deform perpendicular to the plane A on which the optical disc 02 is located, thereby inducing 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, thereby affecting the stable reading and writing of information. Specifically, when the optical disc 02 rotates at high speed, it will cause the air around the optical disc 02 to swirl, 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, if the vibration amplitude of the optical disc 02 is too large, it may cause the optical disc 02 to break, thus posing a significant safety hazard.

[0040] To this end, an embodiment of the present application provides an optical disc drive that can effectively increase the rotation speed of an optical disc and reduce the vibration of the optical disc.

[0041] In order to make the purpose, technical solutions and advantages of this application clearer, this application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0042] The terms used in the following examples are for the purpose of describing specific embodiments only and are not intended to limit the present application. As used in the specification and appended claims of this application, the singular expressions "a," "an," and "the" are intended to include expressions such as "one or more" unless the context clearly indicates otherwise. It should also be understood that in the following examples of this application, "at least one" refers to one, two, or more than two.

[0043] References to "one embodiment" and the like in this specification mean that a particular feature, structure, or characteristic described in connection with that embodiment is included in one or more embodiments of the present application. Thus, phrases such as "in one embodiment," "in some embodiments," and "in further embodiments" appearing in various places in this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. The terms "including," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized.

[0044] As shown in FIG3 , in one example provided herein, an 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 within the housing 110 and has a supporting surface 121 for supporting the optical disc 02. The supporting surface 121 is disposed opposite the mounting surface 111. Furthermore, the optical disc drive 10 also includes a rigid plate 14a and a rigid plate 14b. The rigid plate 14b is disposed on the mounting surface 111, and the rigid plate 14a is disposed on the supporting surface 121. The support mechanism 13 is located within the housing 110 and can suspend the optical disc 02 between the mounting surface 111 and the supporting surface 121, while maintaining a gap between the optical disc 02 and the rigid plates 14a and 14b. The components and operation of the support mechanism 13 will be described in detail below and are not detailed here.

[0045] In the optical disc drive 10 provided in the embodiment of the present application, the provision of the rigid sheets 14 a and 14 b can effectively reduce the volume of air around the optical disc 02 and the movement space of the eddy current, thereby reducing the disturbance of the eddy current on the optical disc 02 .

[0046] Alternatively, it can be understood that when rigid sheet 14a and rigid sheet 14b are not provided, the gap between optical disc 02 and mounting surface 111 is larger, and the gap between optical disc 02 and supporting surface 121 is also larger. This results in a large amount of air being trapped between optical disc 02 and mounting surface 111, and between optical disc 02 and supporting surface 121. When optical disc 02 rotates at high speed, it drives the air around it, generating eddy currents. Furthermore, the large amount of air trapped around optical disc 02 creates a large flow space and energy for the eddy currents, which can easily cause significant impact on optical disc 02 and cause it to vibrate significantly. In the example provided herein, by providing rigid sheet 14b on mounting surface 111 and rigid sheet 14a on supporting surface 121, the space required to accommodate air around optical disc 02 can be significantly reduced. Consequently, the flow space and energy for the eddy currents can be reduced, significantly improving the stability and safety of optical disc 02 during rotation.

[0047] In addition, the rigid sheet 14a and the rigid sheet 14b can both be made of metal materials with high rigidity such as copper, 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, they can effectively reduce the energy of the eddy currents and reduce the disturbance of the eddy currents to the optical disc 02.

[0048] Alternatively, it can be understood that, in actual applications, the housing 11 and the tray 12 can be made of materials with lower hardness, such as plastic and resin. 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 prone to deformation when facing the impact of eddy currents, thereby increasing the instability of the air during flow and possibly worsening the instability of the optical disc 02 during rotation. In the example provided in this application, since the rigid sheet 14a and the rigid sheet 14b both have a high hardness, the rigid sheet 14a and the rigid sheet 14b are not easily deformed when impacted by eddy currents, thereby effectively reducing the energy of the eddy currents and reducing the disturbance of the eddy currents on the optical disc 02.

[0049] 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 14 a and the rigid plate 14 b .

[0050] Specifically, FIG5 shows a non-repetitive jitter frequency domain data diagram obtained by simulation when the rigid plates 14a and 14b are not provided in the optical disc drive 10. The horizontal axis represents frequency in Hz, and the vertical axis represents noise in dB.

[0051] FIG4 shows a graph of non-repetitive jitter frequency domain data obtained by simulation after rigid plates 14a and 14b are installed in optical disc drive 10. The horizontal axis represents frequency in Hz, and the vertical axis represents noise in dB.

[0052] Figure 6 is a superposition of the simulation data in Figures 4 and 5. The lighter portion can be considered the simulation data in Figure 4, and the darker portion can be considered the simulation data in Figure 5. Figure 6 clearly shows that the installation of rigid plates 14a and 14b in optical disc drive 10 significantly reduces noise when reading and writing information to an optical disc.

[0053] For example, the non-repetitive error signal can be reduced from approximately 8.4% to approximately 5.5%.

[0054] As shown in FIG. 3 , in actual application, the specific sizes of the gaps between the rigid plates 14 a , 14 b and the optical disc 02 may vary.

[0055] 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 Figure 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 Figure 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.

[0056] It is understood that in actual use, the gap between rigid sheet 14a and the surface of optical disc 02 can be any value less than 0.8 mm, such as 0.1 mm, 0.2 mm, or 0.7 mm. The gap between rigid sheet 14b and the surface of optical disc 02 can be any value less than 0.8 mm, such as 0.1 mm, 0.2 mm, or 0.7 mm. The gaps between optical disc 02 and rigid sheet 14a and rigid sheet 14b can be the same or different in size, and this is not further described here.

[0057] Furthermore, in the example provided herein, the use of rigid sheets 14a and 14b helps reduce the difficulty of manufacturing the optical disc drive 10 and ensures a high degree of precision. For example, during manufacturing, rigid sheets 14a and 14b can be individually formed. Since rigid sheets 14a and 14b have relatively simple structures and shapes, this facilitates manufacturing and effectively ensures the precision of rigid sheets 14a and 14b. Furthermore, the surface roughness of rigid sheets 14a and 14b can be effectively controlled, which helps ensure the stability of the optical disc drive 10 during operation.

[0058] In addition, the provision of the rigid plates 14 a and 14 b does 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 .

[0059] For example, the housing 11 and tray 12 of the optical disc drive 10 can be made of commonly used materials such as plastic or resin, thereby reducing the weight and manufacturing cost of the optical disc drive 10. Furthermore, because the rigid plates 14a and 14b also provide good structural strength, the housing 11 and tray 12 can also be made of other lighter materials. This further reduces the weight of the optical disc drive 10 and increases the flexibility in material selection for the housing 11 and tray 12.

[0060] In practical applications, the surface of the rigid sheet 14a facing the optical disc 02 can be a flat surface with minimal surface roughness, thereby reducing the intensity of eddy currents generated when air flows over the surface of the rigid sheet 14a. Correspondingly, the surface of the rigid sheet 14b facing the optical disc 02 can be a flat surface with minimal surface roughness, thereby reducing the intensity of eddy currents generated when air flows over the surface of the rigid sheet 14b.

[0061] In addition, as shown in FIG3 , in one example provided herein, 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 confining the optical disc 02 to a predetermined position on the tray 12. The protrusion 122 may be annular. When the optical disc 02 is placed on the surface of the rigid sheet 14 a, the protrusion 122 may surround the edge of the optical disc 02, thereby effectively positioning the optical disc 02 and preventing significant positional deviation between the optical disc 02 and the tray 12.

[0062] In a specific configuration, the rigid sheet 14a and the rigid sheet 14b can be substantially circular, and the outer diameters of the rigid sheet 14a and the rigid sheet 14b can 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 can be located within the outline of the rigid sheet 14a. Alternatively, the projection of the optical disc 02 on the rigid sheet 14b can be located within the outline of the rigid sheet 14b.

[0063] The structures and sizes of the rigid pieces 14 a and 14 b may be the same or different. In addition, in some examples, the outer diameters of the rigid pieces 14 a and 14 b may be substantially the same as the outer diameter of the optical disc 02 .

[0064] Of course, in some examples, the protruding structure may also be provided on the rigid sheet 14 a or the rigid sheet 14 b , or may also be provided on both the rigid sheet 14 a and the rigid sheet 14 b .

[0065] For example, as shown in FIG7 , in one example provided herein, the edge of the rigid sheet 14a may be provided with protrusions 141a, and the protrusions 122 on the tray 12 may be omitted. In other words, the protrusions 141a on the rigid sheet 14a can effectively position the optical disc 02. When the optical disc 02 is placed on the surface of the rigid sheet 14a, the protrusions 141a can surround the edge of the optical disc 02, thereby effectively positioning the optical disc 02.

[0066] In actual application, the rigid sheet 14a can be manufactured separately, thus facilitating the manufacturing process. In addition, the manufacturing accuracy of the protrusion 141a can be well guaranteed, thereby improving the positional accuracy between the optical disc 02 and the tray 12 or the rigid sheet 14a.

[0067] In a specific configuration, the height of protrusion 141a is greater than the thickness of optical disc 02. Alternatively, the top of protrusion 141a may abut against rigid sheet 14b or maintain a small gap therebetween. Alternatively, it can be understood that, under the action of protrusion 141a, rigid sheet 14a and rigid sheet 14b can provide a certain wrapping effect around optical disc 02, minimizing the volume of air surrounding optical disc 02, thereby reducing the disturbance of eddy currents on optical disc 02.

[0068] Of course, in other examples, the height of protrusion 141a can also be less than or equal to the thickness of optical disc 02. Furthermore, protrusions can also be provided on the surface of rigid sheet 14b facing rigid sheet 14a. The protrusions 141a on rigid sheet 14a and the protrusions on rigid sheet 14b can be arranged opposite each other or staggered. In practical applications, the position and size of the protrusions can be adjusted appropriately based on actual needs, and this will not be elaborated here.

[0069] It will be appreciated that the above examples illustrate the optical disc drive 10 as including both the rigid plate 14a and the rigid plate 14b. However, in actual applications, the optical disc drive 10 may include only one rigid plate. That is, the optical disc drive 10 may include only the rigid plate 14a or only the rigid plate 14b. The number of rigid plates provided is not limited in this application.

[0070] 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. The laser diode can generate a laser beam, which 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. 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 condition 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 based on the intensity of the reflected light beam received by the light detector.

[0071] In actual applications, the components included in the optical disc drive 10 such as the laser head 15 for realizing the signal reading function can be of currently commonly used types, which will not be described in detail here.

[0072] In the specific configuration, one, two or more laser heads 15 can be provided. In addition, when there are more than two laser heads 15 , the multiple laser heads 15 can be located on the same side of the optical disc 02 or on both sides of the optical disc 02 .

[0073] For example, as shown in FIG7 , in one example provided herein, 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 facing away from the supporting surface 121. As shown in FIG7 and FIG8 , the tray 12 and the rigid plate 14a have a notch 142a for the laser head 15 to pass through, so that the laser beam generated by the laser head 15 can effectively be directed toward the optical disc 02 without being blocked by the tray 12 and the rigid plate 14a.

[0074] 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 this application, the notches 142a of the tray 12 and the rigid plate 14a are both radially extending long strips.

[0075] In addition, as shown in FIG9 , in another example provided herein, two laser heads, a first laser head 15a and a second laser head 15b, are provided on the side of the rigid plate 14a facing away from the optical disc 02. As shown in FIG9 and FIG10 , the tray 12 and the rigid plate 14a have notches 142a for the laser heads 15 to pass through, allowing the laser beam generated by the laser heads 15 to effectively project toward the optical disc 02 without being blocked by the tray 12 and the rigid plate 14a.

[0076] As shown in FIG. 11 , since the laser head 15 is not provided on the side of the rigid plate 14 b facing away from the optical disc 02 , the rigid plate 14 b is disc-shaped and has no notch for the laser head 15 to pass through.

[0077] 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 here.

[0078] For example, as shown in FIG12 , in another example provided herein, a first laser head 15a is provided on the side of the rigid sheet 14a facing away from the optical disc 02, and a second laser head 15b is provided on the side of the rigid sheet 14b facing away from the optical disc 02, with the first laser head 15a and the second laser head 15b being arranged opposite 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.

[0079] 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 .

[0080] For example, in one embodiment provided herein, a tray 12 is slidably disposed within the housing 11. Specifically, the tray 12 and the housing 11 can be slidably connected via a structure such as a slide rail, allowing the tray 12 to slide out of or into the housing 11's receiving cavity 110. Furthermore, the optical disc drive 10 can further include a motor, which can be connected to the tray 12 via a structure such as a gear, so that the motor can drive the tray 12 to slide. When the optical disc 02 needs to be placed or removed, the motor drives the tray 12 to slide out of the housing 11's receiving cavity 110, facilitating placement or removal of the optical disc 02. During use, the motor drives the tray 12 to slide into the housing 11's receiving cavity 110, thereby enabling the housing 11 to effectively protect the tray 12. When the optical disc 02 is on the tray 12, the tray 12 can also move the optical disc 02 to a desired location.

[0081] 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.

[0082] In addition, as shown in Figures 13 and 14, in an example provided in the present application, the optical disc drive 10 may further include a support 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 arranged 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 facing away from the supporting surface 121, and the tray 12 has a through hole for the second fixed head 133 to pass through.

[0083] 13 , the support plate 131 is in a position before moving or lifting, and in FIG14 , the support plate 131 is in a position after moving or lifting. At this time, the optical disc 02 is clamped between the first bonding surface 1321 and the second bonding surface 1331 .

[0084] 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 second fixed head 133, the first fixed head 132 follows the support plate 131 and moves toward 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, thereby ensuring 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 abutted 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 plate 14a, and the second fitting surface 1331 of the second fixed head 133 is abutted 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 plates 14 a and 14 b .

[0085] In addition, in the example provided in this application, the laser head 15 is disposed on the support plate 131 and is movable 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 plate 14a, allowing the laser head 15 to read and write on the optical disc 02.

[0086] In the example provided herein, the first fixed head 132 is the active rotating member, and the second fixed head 133 is the passive rotating member. Specifically, the optical disc drive 10 further includes a motor for driving the first fixed head 132 to rotate. When the optical disc 02 is clamped between the first abutting surface 1321 and the second abutting surface 1331, the motor drives the first fixed head 132 to rotate. Furthermore, under the clamping force, the optical disc 02 and the second fixed head 133 rotate synchronously with the first fixed head 132.

[0087] 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 this application does not impose any limitation on this.

[0088] Of course, in a specific configuration, the optical disc drive 10 may further include a motor and transmission components 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, as well as the corresponding transmission components, can be of currently common types and are not described in detail here.

[0089] 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.

[0090] For example, as shown in Figure 15, 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 the controller 21 and the power module 23 arranged 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.

[0091] In a specific configuration, the controller 21 can be connected to the motor signal in the support mechanism 13 to control the motor's operating state, thereby effectively controlling the position of the tray 12. Alternatively, the controller 21 can be connected to other corresponding motor signals in the optical disc drive 10 to effectively control the rotation speed of the optical disc or the position of the laser pickup. The optical disc drive 10 can be installed in the chassis 22 using a conventional method, and the control method and configuration method of the optical disc drive 10 are not limited in this application.

[0092] The above are only specific embodiments of the present application, but the scope of protection of this application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. An optical disc drive, characterized in that: include: 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.

2. The optical disc drive according to claim 1, wherein: The rigid sheet is a metal sheet.

3. The optical disc drive according to claim 1 or 2, characterized in that: The surface of the rigid sheet facing the optical disc is a plane.

4. 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.

5. The optical disc drive according to any one of claims 1 to 4, characterized in that: The projection of the optical disc on the rigid sheet is located within the outline of the rigid sheet.

6. The optical disc drive according to any one of claims 1 to 5, characterized in that: The edge of the rigid sheet has a protrusion.

7. 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.

8. 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.

9. The optical disc drive according to claim 8, characterized in that: The optical disc drive also includes 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.

10. The optical disc drive according to claim 9, characterized in that: The optical disc drive also includes 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.

11. The optical disc drive according to any one of claims 8 to 10, characterized in that: The optical disc drive further 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.

12. An electronic device, characterized in that: The optical disc drive comprises a controller and 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.

Images