Middle fixing frame for tablet personal computer

Abstract

The utility model relates to the technical field of tablet personal computers, in particular to a middle fixing frame for a tablet personal computer, which comprises a steel outer frame and a die-casting inner frame, and a connecting flange is arranged on the inner side of the steel outer frame. The connecting flange is provided with a first connecting surface and a second connecting surface, the first connecting surface and the second connecting surface are formed on the connecting flange by spraying copper powder or aluminum powder, and the die-casting inner frame is an aluminum alloy inner frame and is connected to the first connecting surface and the second connecting surface through die-casting forming; the steel outer frame is used as a main body structure, and due to the high tensile strength and the compression resistance of steel, the integrity and the stability of the structure can be kept when the whole frame bears external impact or pressure.

Description

Technical Field

[0001] This utility model relates to the field of tablet computer technology, and in particular to a middle fixing frame for tablet computers. Background Technology

[0002] The mid-frame of a tablet is a crucial component connecting the front and back covers, significantly impacting the device's overall structural strength, lifespan, and aesthetics. Typically designed as a square frame, it sits between the front screen and the back cover. It's often made of metal, such as aluminum alloy, providing not only robust structural support but also excellent heat dissipation. The mid-frame usually integrates various buttons, ports, and speakers to meet diverse user needs.

[0003] Most existing tablet computer frame structures are made from a single piece of aluminum alloy, but the overall structure lacks sufficient strength to withstand external impacts or pressure. Therefore, a new design is needed for the existing tablet computer frame structure. Utility Model Content

[0004] To solve the above problems, this utility model adopts a steel outer frame as the main structure. Thanks to the high tensile strength and compressive strength of steel, it ensures that the entire frame can maintain the integrity and stability of the structure when subjected to external impact or pressure. This is a middle fixing frame for tablet computers.

[0005] The technical solution adopted by this utility model is: a middle fixing frame for a tablet computer, including a steel outer frame and a die-cast inner frame. A connecting flange is provided on the inner side of the steel outer frame. A first connecting surface and a second connecting surface are provided on the connecting flange. The first connecting surface and the second connecting surface are both formed on the connecting flange by spraying copper powder or aluminum powder. The die-cast inner frame is an aluminum alloy inner frame and is connected to the first connecting surface and the second connecting surface by die casting.

[0006] A further improvement to the above solution is that the outer side of the steel frame is provided with fixing holes, and the outer edge of the steel frame is provided with an arc-shaped corner.

[0007] A further improvement to the above solution is that a connecting wall is provided on the side of the steel outer frame near the connecting flange, and the connecting wall is provided with an inner groove.

[0008] A further improvement to the above solution is that both the first connecting surface and the second connecting surface are rough surfaces.

[0009] A further improvement to the above solution is that the die-cast inner frame is provided with a mounting platform, which is used for mounting the control board of the tablet computer.

[0010] A further improvement to the above scheme is that the mounting platform is covered with heat-transferring copper foil by die casting.

[0011] A further improvement to the above scheme is that the heat transfer copper foil is evenly distributed with casting-coated holes.

[0012] A further improvement to the above scheme is that the mounting platform is provided with a heat transfer film, and the heat transfer film is a graphite film.

[0013] A further improvement to the above solution is that the mounting platform is provided with heat dissipation holes.

[0014] The beneficial effects of this utility model are:

[0015] Compared to existing tablet computer frames, this invention uses a steel outer frame as the main structure. Thanks to the high tensile and compressive strength of steel, the entire frame maintains its structural integrity and stability when subjected to external impacts or pressure. This is crucial for tablet computers, effectively resisting accidental drops or pressure during daily use and protecting internal precision electronic components from damage. The first and second connecting surfaces on the connecting flange are formed using copper or aluminum powder coating. This design not only enhances the bonding strength of the connection interface but, more importantly, utilizes the high thermal conductivity of copper and aluminum. The die-cast aluminum alloy inner frame is tightly integrated with these specially treated connecting surfaces, forming an efficient heat conduction path. During tablet computer operation, the heat generated internally can be quickly conducted to the steel outer frame through these connecting surfaces and then dissipated through natural convection or an auxiliary cooling system, effectively reducing the operating temperature of internal components, extending service life, and improving system stability. The die-cast inner frame is made of aluminum alloy and manufactured using precision die-casting technology. This process not only ensures the complexity and precision of the inner frame structure but also achieves a lightweight design. Aluminum alloy has a much lower density than steel, allowing the entire frame to be significantly lighter while maintaining strength. This is crucial for improving the portability and user experience of tablets. The copper and aluminum powder coating at the interface not only improves heat conduction efficiency but also enhances the frame's environmental adaptability. Attached Figure Description

[0016] Figure 1 This is a three-dimensional schematic diagram of the intermediate fixing frame for the tablet computer of this utility model;

[0017] Figure 2 for Figure 1 A three-dimensional diagram of a tablet computer using a central fixed frame from another perspective;

[0018] Figure 3 for Figure 1 A partial structural diagram of the middle fixing frame used in a tablet computer.

[0019] Explanation of reference numerals in the attached drawings: 1. Steel outer frame; 11. Fixing hole; 12. Arc-shaped corner; 13. Connecting wall surface; 131. Inner groove; 2. Die-cast inner frame; 21. Mounting platform; 211. Heat transfer copper foil; 212. Heat transfer film; 213. Heat dissipation through hole; 3. Connecting flange; 31. First connecting surface; 32. Second connecting surface. Detailed Implementation

[0020] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.

[0021] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0023] like Figures 1-3As shown, in one embodiment of this utility model, a middle fixing frame for a tablet computer is provided, including a steel outer frame 1 and a die-cast inner frame 2. A connecting flange 3 is provided on the inner side of the steel outer frame 1. A first connecting surface 31 and a second connecting surface 32 are provided on the connecting flange 3. Both the first connecting surface 31 and the second connecting surface 32 are formed on the connecting flange 3 by copper powder or aluminum powder spraying. The die-cast inner frame 2 is an aluminum alloy inner frame and is connected to the first connecting surface 31 and the second connecting surface 32 by die casting. This embodiment uses a steel outer frame 1 as the main structure. Thanks to the high tensile strength and compressive strength of steel, the entire frame can maintain structural integrity and stability when subjected to external impacts or pressure. This is crucial for tablet computers, effectively resisting accidental drops or squeezing during daily use and protecting internal precision electronic components from damage. The first connecting surface 31 and the second connecting surface 32 on the connecting flange 3 are formed by copper powder or aluminum powder spraying. This design not only enhances the bonding force of the connection interface but, more importantly, utilizes the high thermal conductivity of copper and aluminum. The die-cast aluminum alloy inner frame 2 is tightly integrated with these specially treated connection surfaces, forming a highly efficient heat conduction path. During tablet operation, the heat generated internally is rapidly conducted to the steel outer frame 1 through these connection surfaces, and then dissipated through natural convection or an auxiliary cooling system. This effectively reduces the operating temperature of internal components, extends their service life, and improves system stability. The die-cast inner frame 2 is made of aluminum alloy and manufactured using precision die-casting technology. This process not only ensures the complexity and precision of the inner frame structure but also achieves a lightweight design. The density of aluminum alloy is much lower than that of steel, allowing the entire frame to significantly reduce weight while maintaining strength, which is of great significance for improving the portability and user experience of the tablet. The connection surfaces coated with copper and aluminum powder not only improve heat conduction efficiency but also enhance the frame's environmental adaptability.

[0024] The outer side of the steel frame 1 is provided with fixing holes 11, and the outer edge of the steel frame 1 is provided with an arc-shaped corner 12. In this embodiment, the robustness of the steel frame 1 provides excellent protection for the tablet computer, effectively resisting external impacts and ensuring the safety of the internal structure. The fixing holes 11 can be used for the installation of buttons or plug-in ports. Secondly, the design of the arc-shaped corner 12 not only improves the aesthetics of the tablet computer, but also brings a better feel.

[0025] A connecting wall 13 is provided on the side of the steel outer frame 1 near the connecting flange 3, and the connecting wall 13 is provided with an inner groove 131. In this embodiment, the steel outer frame 1 provides excellent strength and durability, effectively protecting the internal structure of the tablet computer from external impacts and pressure, thereby extending the service life of the device. The design of the connecting wall 13 further enhances the connection stability between the outer frame and the tablet computer body, ensuring the overall structural robustness. Secondly, the inner groove 131 plays a key role in the manufacturing process. It facilitates precise docking and fixing with other components, improving assembly efficiency and accuracy. At the same time, it is used to collect excess glue after injection, preventing excess glue from overflowing to the outside.

[0026] The die-cast inner frame 2 is equipped with a mounting platform 21 for mounting the control board of the tablet computer. A heat-transferring copper foil 211 is die-cast and coated inside the mounting platform 21. The heat-transferring copper foil 211 has evenly distributed casting-coated holes. A heat-transferring film 212, which is a graphite film, is provided on the mounting platform 21. Heat dissipation through-holes 213 are also provided on the mounting platform 21. In this embodiment, the precise die-casting process not only ensures the stability of the mounting platform 21 but also provides a precise and reliable mounting foundation for the tablet computer's control board. The cleverly designed heat-transferring copper foil 211 inside the mounting platform 21 greatly improves heat conduction efficiency, allowing the heat generated by the control board during operation to be quickly absorbed and dispersed. The evenly distributed casting-coated holes on the heat-transferring copper foil 211 further optimize the heat conduction path, ensuring the uniformity and efficiency of heat transfer. The design of these channels not only increases the heat transfer area but also effectively reduces thermal resistance, allowing heat to be transferred more quickly through the copper foil to the subsequent heat dissipation structure. The heat transfer film 212 on the mounting platform 21 uses high-performance graphite film material. With its excellent thermal conductivity and good mechanical stability, the graphite film serves as a crucial bridge connecting the heat transfer copper foil 211 to the external environment. It can rapidly transfer the heat absorbed by the copper foil to the outside, effectively reducing the operating temperature of the control board, thereby extending the lifespan of the tablet and improving overall performance. The carefully designed heat dissipation holes 213 on the mounting platform 21 provide additional channels for heat dissipation. These holes not only enhance air convection but also further improve heat dissipation efficiency by increasing the heat dissipation area. During prolonged high-load operation of the tablet, these heat dissipation holes 213 can significantly alleviate the thermal load on the control board, prevent overheating, and ensure the stability and reliability of the tablet.

[0027] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A middle fixing frame for a tablet computer, characterized in that: It includes a steel outer frame and a die-cast inner frame. The inner side of the steel outer frame is provided with a connecting flange. The connecting flange is provided with a first connecting surface and a second connecting surface. Both the first connecting surface and the second connecting surface are formed on the connecting flange by spraying copper powder or aluminum powder. The die-cast inner frame is an aluminum alloy inner frame and is connected to the first connecting surface and the second connecting surface by die casting.

2. The intermediate fixing frame for a tablet computer according to claim 1, characterized in that: The outer side of the steel frame is provided with fixing holes, and the outer edge of the steel frame is provided with an arc corner.

3. The intermediate fixing frame for a tablet computer according to claim 1, characterized in that: The steel outer frame has a connecting wall surface near the connecting flange, and the connecting wall surface has an inner groove.

4. The intermediate fixing frame for a tablet computer according to claim 1, characterized in that: Both the first connecting surface and the second connecting surface are rough surfaces.

5. The intermediate fixing frame for a tablet computer according to claim 1, characterized in that: The die-cast inner frame is provided with a mounting platform, which is used for mounting the control board of the tablet computer.

6. The intermediate fixing frame for a tablet computer according to claim 5, characterized in that: The mounting platform is covered with heat-transferring copper foil by die casting.

7. The intermediate fixing frame for a tablet computer according to claim 6, characterized in that: The heat transfer copper foil is evenly distributed with casting-coated holes.

8. The intermediate fixing frame for a tablet computer according to claim 5, characterized in that: The mounting platform is equipped with a heat transfer membrane, which is a graphite membrane.

9. The intermediate fixing frame for a tablet computer according to claim 5, characterized in that: The mounting platform is provided with heat dissipation holes.

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