Die-cast middle plate of mobile phone

Abstract

The utility model relates to mobile phone accessory technical field especially is a kind of die-casting forming mobile phone middle plate.The kind of die-casting forming mobile phone middle plate, including frame and main plate, the left and right sides of main plate are connected with first connecting edge;The upper and lower sides of main plate are connected with second connecting edge;The periphery edge of main plate is provided with first embedded groove;The middle part of the back of main plate is provided with battery groove, and first wiring hole and heat conduction window are arranged on the bottom wall of battery groove;The front of main plate is provided with heat conduction fin groove, and the heat conduction fin groove is connected with heat conduction window;The inside of frame is provided with first embedded block;The first embedded block is embedded in first embedded groove.When frame and main plate are die-casting together, the first embedded block is embedded in first embedded groove, and frame and first connecting edge, second connecting edge are combined together.The kind of design can improve the bending resistance of mobile phone middle plate, and also can enhance the firm degree between frame and main plate, and the two will not be loose.

Description

Technical Field

[0001] This utility model relates to the field of mobile phone accessories technology, and in particular to a die-cast mobile phone mid-plate. Background Technology

[0002] The mid-plate is one of the accessories in a mobile phone, and components such as circuit boards and batteries are installed on it. Some mid-plates on the market are made by die casting. During production, die casting is usually done in two stages: the main body plate is die-cast first, and then the frame is die-cast together with the main body plate.

[0003] In some commercially available mobile phone mid-plates, the frame and main body are die-cast and joined together primarily through interlocking structures at their edges. However, as mobile phone sizes increase, the length of the mid-plate also increases. During production, it was found that traditionally designed mid-plates have poor bending resistance, and when the mid-plate is bent to a certain extent, localized separation can easily occur between the frame and the main body, resulting in poor overall stability.

[0004] For example, Chinese patent application number 201922435543.7 discloses an in-mold die-cast mobile phone mid-plate, specifically describing "a plastic frame integrally embedded with the aluminum alloy die-cast plate, covering the outer periphery of the aluminum alloy die-cast plate; multiple first inserts are provided on the stainless steel embedded part, and multiple second inserts are provided on the plastic frame, the first and second inserts engaging in the grooves of the aluminum alloy die-cast plate to form a stable bond." While this design uses an interlocking structure, it suffers from poor bending resistance in large-sized mobile phone mid-plates. Furthermore, when the mid-plate is bent to a certain extent, local separation can easily occur between the frame and the main body, resulting in poor overall stability.

[0005] For example, Chinese patent application number 201922440694.1 discloses an integrated inlay-molded mobile phone midplate, which specifically states that "the left and right side guards are provided with wedge-shaped teeth, and the inner edges of the left and right side frames (202) are provided with wedge-shaped grooves, which interlock with each other." It also uses an interlocking structure. However, when dealing with large-sized mobile phone midplates, this design results in poor bending resistance, and when the midplate is bent to a certain extent, local separation can easily occur between the frame and the main body, leading to poor stability. Utility Model Content

[0006] In view of this, the present invention addresses the deficiencies of the existing technology, and its main purpose is to provide a die-cast mobile phone middle plate that not only has good bending resistance, but also has a higher degree of firmness between the frame and the main body plate, thereby overcoming the shortcomings of the existing technology.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] This application provides a die-cast mobile phone mid-plate, including a frame and a main body plate.

[0009] The left and right sides of the main body plate are connected by first connecting edges, and a first gap is left between the first connecting edges and the main body plate; the top and bottom sides of the main body plate are connected by second connecting edges, and a second gap is left between the first connecting edges and the main body plate.

[0010] The main body plate has a first fitting groove on its four edges; a battery slot is provided in the middle of the back of the main body plate, and a first wiring hole and a heat conduction window are provided on the bottom wall of the battery slot.

[0011] The front of the main body plate is provided with a heat-conducting plate groove, which is connected to the heat-conducting window;

[0012] A first fitting block is provided on the inner side of the frame; the frame and the main body plate are die-cast together, and the first fitting block is embedded in the first fitting groove.

[0013] Preferably, the upper part of the back side of the main body plate is provided with a first threaded hole, a second wiring hole, and a plurality of first mounting slots; the lower part of the back side of the main body plate is provided with a second threaded hole, a third wiring hole, a cable tray, and a plurality of second mounting slots.

[0014] Preferably, the main body plate and the first connecting edge are connected by a first connecting part; the main body plate and the second connecting edge are connected by a second connecting part.

[0015] Preferably, the widths of the first gap and the second gap are between 0.2mm and 0.8mm.

[0016] Preferably, the structure of the first fitting groove is one or a combination of circular, dovetail, rectangular, fan-shaped, and trapezoidal.

[0017] Preferably, graphite sheets are adhered in the heat-conducting plate groove; at least two reinforcing ribs are provided laterally on the back of the main body plate.

[0018] Preferably, the frame is made of die-cast aluminum alloy; the main body plate is made of die-cast magnesium-aluminum alloy.

[0019] Preferably, the inner side of the frame is provided with a clamping edge; a first fitting block is provided on the clamping edge; the clamping edge clamps the edge of the main body plate.

[0020] This application provides a mobile phone, including the die-cast mobile phone middle plate; a first circuit board is disposed on the upper part of the back of the main body plate; a second circuit board is disposed on the lower part of the back of the main body plate; a battery is attached to a battery slot, and thermally conductive adhesive is attached to the battery slot.

[0021] This invention has significant advantages and beneficial effects compared with existing technologies. Specifically, as shown in the above technical solution, the left and right sides of the main body plate are connected by first connecting edges, and the top and bottom sides of the main body plate are connected by second connecting edges. When the frame and the main body plate are die-cast together, the first fitting block is embedded into the first fitting groove, and the frame is combined with the first and second connecting edges. This design can improve the bending resistance of the mobile phone's middle plate, and also enhance the firmness between the frame and the main body plate, preventing them from loosening. Attached Figure Description

[0022] Figure 1 This is a front view of one embodiment of the present utility model.

[0023] Figure 2 This is a schematic diagram of the back of one embodiment of the present invention.

[0024] Figure 3 This is an exploded view of one embodiment of the present invention.

[0025] Figure 4 This is a partial schematic diagram of one embodiment of the present utility model.

[0026] Figure 5 This is a partial schematic diagram of one embodiment of the present utility model.

[0027] Figure 6 This is a schematic diagram of the back of the main body plate of Embodiment 1 of this utility model.

[0028] Explanation of reference numerals in the attached diagram:

[0029] 10. Frame; 11. Clamping edge; 12. First fitting block; 20. Main body plate; 21. First connecting part; 22. First connecting edge; 23. First gap; 24. Second connecting part; 25. Second connecting edge; 26. Second gap; 27. First fitting groove; 210. Battery slot; 211. First wiring hole; 212. Heat conduction window; 213. Graphite sheet; 220. First threaded hole; 221. Second wiring hole; 222. First mounting groove; 230. Second threaded hole; 231. Third wiring hole; 232. Cable tray; 234. Second mounting groove. Detailed Implementation

[0030] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0031] Example 1

[0032] Please refer to Figures 1 to 6As shown, it illustrates the specific structure of a preferred embodiment of the present invention, which is a die-cast mobile phone mid-plate.

[0033] When the frame 10 and the main body plate 20 are die-cast together, the first fitting block 12 is embedded in the first fitting groove 27, and the first connecting edge 22 and the second connecting edge 25 are also embedded in the frame 10. This design can not only improve the bending resistance of the mobile phone plate, but also improve the firmness between the frame 10 and the main body plate 20.

[0034] This application provides a die-cast mobile phone mid-plate, including a frame 10 and a main body plate 20; the left and right sides of the main body plate 20 are connected by first connecting edges 22, and a first gap 23 is left between the first connecting edges 22 and the main body plate 20; the top and bottom sides of the main body plate 20 are connected by second connecting edges 25, and a second gap 26 is left between the first connecting edges 22 and the main body plate 20; the four edges of the main body plate 20 are provided with first fitting grooves 27; a battery slot 210 is provided in the center of the back of the main body plate 20, and a first wiring hole 211 and a heat conduction window 212 are provided on the bottom wall of the battery slot 210; a heat conduction plate groove 214 is provided on the front of the main body plate 20, and the heat conduction plate groove 214 is connected to the heat conduction window 212; a first fitting block 12 is provided on the inner side of the frame 10; the frame 10 and the main body plate 20 are die-cast together, and the first fitting block 12 is embedded in the first fitting groove 27. The frame 10 and the main body plate 20 are joined together by a die-casting process. During production, the main body plate 20 is first formed by die casting or stamping, and then the frame 10 is die-cast together with the main body plate 20. When the frame 10 and the main body plate 20 are die-cast together, the first connecting edge 22 and the second connecting edge 25 are embedded in the frame 10, and the first fitting block 12 is embedded in the first fitting groove 27. This design can improve the firmness between the frame 10 and the main body plate 20, and its bending resistance is also better due to the presence of the first connecting edge 22 and the second connecting edge 25. The first gap 23 and the second gap 26 facilitate the die-cast material to wrap the main body plate 20. The battery slot 210 is used to place the battery. The first wiring hole 211 is used for wiring, and the heat conduction window 212 is used to transfer the battery heat to other heat conduction components, enhancing the heat dissipation capacity of the mobile phone. In this embodiment, the structure of the first connecting edge 22 and the second connecting edge 25 is strip-shaped, so the bending resistance of the mobile phone's middle plate is better.

[0035] Preferably, the upper part of the back surface of the main body plate 20 is provided with a first threaded hole 220, a second wiring hole 221, and a plurality of first mounting slots 222; the lower part of the back surface of the main body plate 20 is provided with a second threaded hole 230, a third wiring hole 231, a ribbon cable slot 232, and a plurality of second mounting slots 234. The second threaded hole 230 and the first threaded hole 220 are formed by tapping and are used for installation. The third wiring hole 231 and the second wiring hole 221 are used for wiring; the first mounting slots 222 and the second mounting slots 234 are used for installing components and for routing ribbon cables. This type of component makes the internal components of the mobile phone very compactly installed.

[0036] Preferably, the main body plate 20 and the first connecting edge 22 are connected by a first connecting portion 21; the main body plate 20 and the second connecting edge 25 are connected by a second connecting portion 24. The first connecting portion 21 and the second connecting portion 24 can be columnar or block-shaped. Each segment of the first connecting edge 22 is connected to only one first connecting portion 21; each segment of the second connecting edge 25 is connected to only one second connecting portion 24. This design facilitates the flow of the die-casting material, thereby allowing the frame 10 to wrap around the edge of the main body plate 20 more quickly.

[0037] Preferably, the widths of the first gap 23 and the second gap 26 are between 0.2mm and 0.8mm. The widths of the first gap 23 and the second gap 26 can be set according to specific needs. Specifically, the widths of the first gap 23 and the second gap 26 can be 0.2mm, 0.4mm, 0.6mm, and 0.8mm. The first gap 23 and the second gap 26 facilitate better wrapping of the edge of the main body panel 20 by the frame 10.

[0038] Preferably, the structure of the first fitting groove 27 is one or a combination of circular, dovetail, rectangular, fan-shaped, and trapezoidal. In this embodiment, the first fitting groove 27 is a dovetail groove, and a combination of dovetail groove and circular groove. This mixed combination method helps to improve the firmness between the frame 10 and the main body plate 20.

[0039] Preferably, a graphite sheet 213 is adhered within the heat-conducting groove; at least two reinforcing ribs are laterally arranged on the back of the main body plate 20. The graphite sheet 213 has excellent thermal conductivity, allowing heat from the battery to be quickly transferred to the phone's mid-plate. Simultaneously, the graphite sheet 213 also ensures a more even temperature distribution within the phone's mid-plate. The number of reinforcing ribs can be adjusted as needed, further enhancing the bending resistance of the phone's mid-plate. The graphite sheet 213 and the heat-conducting groove are bonded together using thermally conductive adhesive. The thermally conductive adhesive can be thermally conductive silicone, graphene thermally conductive adhesive, etc.

[0040] Preferably, the frame 10 is made of die-cast aluminum alloy; the main body plate 20 is made of die-cast magnesium-aluminum alloy. Aluminum alloy has better bending resistance than magnesium-aluminum alloy. The combination of the two makes the mobile phone's middle plate not only lightweight and high-strength, but also has good bending resistance.

[0041] Preferably, the inner side of the frame 10 is provided with a clamping edge 11; a first fitting block 12 is provided on the clamping edge 11; the clamping edge 11 clamps the edge of the main body plate 20. During the die casting of the frame 10 and the main body plate 20, the two clamping edges 11 clamp the edge of the main body plate 20, and the first fitting block 12 on the clamping edge 11 is embedded in the first fitting groove 27. With this design, the frame 10 and the main body plate 20 will be more firmly combined.

[0042] Example 2

[0043] This application provides a mobile phone, including a die-cast mobile phone mid-plate according to one embodiment; a first circuit board is disposed on the upper part of the back of the main body plate 20; a second circuit board is disposed on the lower part of the back of the main body plate 20; a battery is attached to a battery slot 210, and thermally conductive adhesive is applied to the battery slot 210. The battery is attached to the battery slot 210 with thermally conductive adhesive. Thermally conductive adhesive is also applied to the battery, and the heat of the battery can be transferred to a graphite sheet 213. The graphite sheet 213 quickly and evenly distributes the heat on the mobile phone mid-plate. This design can improve the heat dissipation and temperature uniformity of the mobile phone.

[0044] In summary, the key design feature of this utility model is that the left and right sides of the main body plate 20 are connected by first connecting edges 22, and the upper and lower sides of the main body plate 20 are connected by second connecting edges 25. When the frame 10 and the main body plate 20 are die-cast together, the first fitting block 12 is embedded in the first fitting groove 27, and at the same time, the frame 10 is combined with the first connecting edges 22 and the second connecting edges 25. This design can improve the bending resistance of the middle plate of the mobile phone, and also enhance the firmness between the frame 10 and the main body plate 20, preventing them from becoming loose.

[0045] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A die-cast mobile phone mid-plate, characterized in that: Including the frame and main body panel; The left and right sides of the main body plate are connected by first connecting edges, and a first gap is left between the first connecting edges and the main body plate; the top and bottom sides of the main body plate are connected by second connecting edges, and a second gap is left between the first connecting edges and the main body plate. The main body plate has a first fitting groove on its four edges; a battery slot is provided in the middle of the back of the main body plate, and a first wiring hole and a heat conduction window are provided on the bottom wall of the battery slot. The front of the main body plate is provided with a heat-conducting plate groove, which is connected to the heat-conducting window; A first fitting block is provided on the inner side of the frame; the frame and the main body plate are die-cast together, and the first fitting block is embedded in the first fitting groove.

2. The die-cast mobile phone mid-plate according to claim 1, characterized in that: The upper part of the back of the main body plate is provided with a first threaded hole, a second wiring hole, and several first mounting slots; the lower part of the back of the main body plate is provided with a second threaded hole, a third wiring hole, a cable tray, and several second mounting slots.

3. The die-cast mobile phone mid-plate according to claim 1, characterized in that: The main body plate and the first connecting edge are connected by a first connecting part; the main body plate and the second connecting edge are connected by a second connecting part.

4. A die-cast mobile phone mid-plate according to claim 1 or 3, characterized in that: The widths of the first gap and the second gap are between 0.2mm and 0.8mm.

5. The die-cast mobile phone mid-plate according to claim 1, characterized in that: The structure of the first fitting groove is one or a combination of circular, dovetail, rectangular, fan-shaped, and trapezoidal shapes.

6. The die-cast mobile phone mid-plate according to claim 1, characterized in that: Graphite sheets are attached to the heat-conducting plate groove.

7. The die-cast mobile phone mid-plate according to claim 1, characterized in that: The back of the main body plate has at least two reinforcing ribs arranged laterally, and the battery slot is formed between the reinforcing ribs.

8. The die-cast mobile phone mid-plate according to claim 1, characterized in that: The frame is made of die-cast aluminum alloy; the main body plate is made of die-cast magnesium-aluminum alloy.

9. A die-cast mobile phone mid-plate according to claim 1 or 8, characterized in that: The inner side of the frame is provided with a clamping edge; a first fitting block is provided on the clamping edge; the clamping edge clamps the edge of the main body plate.

10. A mobile phone, characterized in that: The device includes a mobile phone mid-plate formed by die casting as described in any one of claims 1-9; a first circuit board is disposed on the upper part of the back side of the main body plate; a second circuit board is disposed on the lower part of the back side of the main body plate; the battery is attached to the battery slot, and thermally conductive adhesive is attached to the battery slot.

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