Carbon fiber sheet suitable for mobile phone and mobile phone

Abstract

The utility model relates to carbon fiber sheet technical field especially is suitable for carbon fiber sheet and cell -phone of cell -phone. The carbon fiber sheet suitable for cell -phone, including metal braiding layer, at least one side of this metal braiding layer is provided with carbon fiber felt layer, and is provided with the adhesion layer between carbon fiber felt layer and metal braiding layer, the insulating layer is set up on the outside surface of carbon fiber felt layer. Metal braiding layer has the bearing effect, the adhesion layer sticks together carbon fiber felt layer, and then sets up the insulating layer on carbon fiber felt layer. The carbon fiber felt layer under this kind of structure is prefabricated, and the structure is simplified, and the manufacturing cost is greatly reduced. Meanwhile, carbon fiber felt layer still has better buffering performance, can better protect the internal component of cell -phone.

Description

Technical Field

[0001] This utility model relates to the field of carbon fiber sheet technology, and in particular to a carbon fiber sheet suitable for mobile phones and a mobile phone. Background Technology

[0002] The carbon fiber sheets inside mobile phones serve to dissipate heat and enhance structural strength. Some carbon fiber sheets on the market also provide some cushioning and protection; however, some carbon fiber sheets have overly complex structures, making them difficult and costly to manufacture.

[0003] For example, Chinese patent application number CN202421294231.3 discloses a carbon fiber sheet for a mobile phone battery compartment, specifically stating that "the carbon fiber layer is composed of a mixed weave of a fiber braided layer and a metal braided layer, and the carbon fibers in the fiber braided layer are in a twisted or spiral state." This type of carbon fiber layer is a mixed weave, and the carbon fibers are twisted or spiraled. This structure is complex and difficult to weave. In particular, the twisted or spiraled state of the carbon fibers in the fiber braided layer is very unfavorable for weaving. Therefore, this type of carbon fiber sheet has an overly complex structure, is difficult to manufacture, and has high costs. Utility Model Content

[0004] In view of this, the present invention addresses the deficiencies of the existing technology, and its main purpose is to provide a carbon fiber sheet suitable for mobile phones, which has an optimized structure, reduces manufacturing difficulty and cost, and thus overcomes the shortcomings of the existing technology.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] This application provides a carbon fiber sheet suitable for mobile phones, characterized in that: it includes a metal braided layer; at least one side of the metal braided layer is provided with a carbon fiber felt layer, and an adhesive layer is provided between the carbon fiber felt layer and the metal braided layer;

[0007] The insulation layer is set on the outer surface of the carbon fiber felt layer.

[0008] Preferably, the structure of the metal braided layer is planar or wavy.

[0009] Preferably, the metal braided layer comprises a first metal wire and a second metal wire woven together; wherein the diameter of the first metal wire is larger than the diameter of the second metal wire.

[0010] Preferably, metal wires or carbon fiber filaments are pierced between the carbon fiber felt layer and the metal braided layer.

[0011] Preferably, the adhesive layer is one of acrylic adhesive, thermally conductive epoxy resin adhesive, thermally conductive silicone adhesive, or thermally conductive adhesive.

[0012] Preferably, the insulating layer is one of the following: an aromatic polyamide polymer insulating layer, a polyethylene layer, a polypropylene layer, an acrylic resin, an epoxy resin, and polyvinyl chloride.

[0013] Preferably, carbon fiber felt layers are provided on both sides of the metal braided layer, and an adhesive layer is provided on the insulating layer on one side.

[0014] This application provides a mobile phone, including the aforementioned carbon fiber sheet; a screen, a middle plate, and a back cover, with the screen attached to the front of the middle plate; a battery compartment provided on the back of the middle plate; a battery attached to the battery compartment; the carbon fiber sheet attached to the inner wall of the back cover and the battery compartment; and the back cover fastened to the middle plate.

[0015] Compared with existing technologies, this invention has significant advantages and beneficial effects. Specifically, as shown in the above technical solution, the metal braided layer has a load-bearing function, the adhesive layer bonds the carbon fiber felt layers together, and then the insulating layer is placed on the carbon fiber felt layers. In this structure, the carbon fiber felt layers are prefabricated, simplifying the structure and greatly reducing manufacturing costs. At the same time, the carbon fiber felt layers also have better cushioning performance, providing better protection for the internal components of the mobile phone. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the layered structure of an embodiment of the present invention.

[0017] Figure 2 This is a schematic diagram of the weaving of the first and second metal wires in a planar metal braided layer according to an embodiment of the present invention.

[0018] Figure 3 This is a schematic diagram of the weaving of the first and second metal wires in a wavy metal braided layer according to an embodiment of the present invention.

[0019] Explanation of reference numerals in the attached diagram:

[0020] 10. Metal braided layer; 11. First metal wire; 12. Second metal wire; 20. Adhesive layer; 30. Carbon fiber felt layer; 40. Insulation layer; 50. Adhesive layer. Detailed Implementation

[0021] 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.

[0022] Please refer to Figures 1 to 3 As shown, it illustrates the specific structure of a preferred embodiment of the present invention, which is a carbon fiber sheet suitable for mobile phones.

[0023] In this process, the carbon fiber felt layer 30 is first pre-formed, then the carbon fiber felt layer 30 is bonded to the metal braided layer 10, and then the insulation layer 40 is placed on the carbon fiber felt layer 30. This structure is simpler, helps to improve production efficiency, reduce quality costs, and better control quality.

[0024] This application provides a carbon fiber sheet suitable for mobile phones, characterized by: a metal braided layer 10; a carbon fiber felt layer 30 disposed on at least one side of the metal braided layer 10, and an adhesive layer 20 disposed between the carbon fiber felt layer 30 and the metal braided layer 10; and an insulating layer 40 disposed on the outer surface of the carbon fiber felt layer 30. The metal braided layer 10 is woven with metal wires and can be woven using warp knitting, weft knitting, mixed knitting, etc. The carbon fiber felt layer 30 is a type of felt made of carbon fiber. The carbon fiber felt layer 30 can be prepared by needle punching, wet molding, or dry molding. The most common techniques for preparing carbon fiber felt are wet molding and dry molding. Wet molding refers to mixing carbon fiber with resin or glue and laying the fibers into a felt by wetting them at a certain density and direction. The choice of resin is crucial, as different types of resin will affect the mechanical properties, heat resistance, etc., of the final felt. After the resin is cured, the stability of the felt is greatly improved; and it can effectively maintain its shape at high temperatures. Wet molding requires a long curing time and is easily affected by environmental factors, so it has high requirements for the operating environment. In contrast, dry molding is simpler and faster. It involves directly laying carbon fibers and hot-pressing them without adding any resin. Although it doesn't offer the same superior mechanical properties as wet molding, its high efficiency and controllability make dry molding more advantageous in large-scale production. By continuously optimizing the hot-pressing temperature and pressure, dry-molded carbon fiber mats can also possess excellent overall performance.

[0025] During production: 1. An adhesive layer 20 is applied to the metal braided layer 10. The adhesive layer 20 permeates both the carbon fiber felt layer 30 and the metal braided layer 10, and after curing, it bonds the carbon fiber felt layer 30 and the metal braided layer 10 into a single unit. 2. The insulation layer 40 can be applied to the carbon fiber felt layer 30 using an adhesive bonding method. This structure simplifies the carbon fiber sheet structure, reduces manufacturing difficulty, and lowers manufacturing costs. Even better, the carbon fiber felt layer 30 is only partially permeated by the adhesive layer 20, and its cushioning performance remains intact. While the insulation layer 40 and the carbon fiber felt layer 30 are also partially bonded, the carbon fiber felt layer 30 still retains its cushioning properties, and its overall performance is unaffected.

[0026] The thickness of the metal braided layer 10 is between 20-50 μm, the thickness of the adhesive layer 20 is between 20-30 μm, the thickness of the carbon fiber felt layer 30 is between 100-500 μm, and the thickness of the insulating layer 40 is between 20-30 μm. Each layer is very thin. The thickness of the carbon fiber felt layer 30 can be controlled by applying light pressure.

[0027] Preferably, the metal braided layer 10 has a planar or wavy structure. After being pressed, the metal braided layer 10 is shaped, facilitating the fabrication of carbon fiber sheets into any shape. When the metal braided layer 10 has a wavy structure, the mold presses the metal braided layer 10 into a wavy shape according to the design. Due to the wavy shape, the combination of the carbon fiber felt layer 30 and the metal braided layer 10 provides better cushioning performance, thus better protecting the internal components of the mobile phone.

[0028] Preferably, the metal braided layer 10 includes a first metal wire 11 and a second metal wire 12 woven together; wherein the diameter of the first metal wire 11 is larger than the diameter of the second metal wire 12. The first metal wire 11 and the second metal wire 12 are copper wires, and their diameters are different. The carbon fiber sheet may need to be bent. In this embodiment, the included angle between the first metal wire 11 and the second metal wire 12 is 90°. Preferably, when bending the carbon fiber sheet, the second metal wire 12 is bent, while the first metal wire 11 is parallel to the folded edge. This design is beneficial for the shaping of the metal braided layer 10.

[0029] Preferably, metal wires or carbon fiber filaments are pierced between the carbon fiber felt layer 30 and the metal braided layer 10. The metal wires or carbon fiber filaments can enhance the connection and integrity between the carbon fiber felt layer 30 and the metal braided layer 10, and also improve its thermal conductivity.

[0030] Preferably, the adhesive layer 20 is one of acrylic adhesive, thermally conductive epoxy resin adhesive, thermally conductive silicone, or a thermally conductive adhesive. In this embodiment, the adhesive layer 20 is an acrylic adhesive layer with a paper-based substrate. Before the adhesive dries completely, it penetrates into the mesh of the metal braided layer 10, which reduces the overall thickness of the carbon fiber sheet during pressing. A thermally conductive adhesive is a composite material used for bonding and heat dissipation, primarily in electronic devices to enhance heat conduction and fix the connection between heat-generating components and heat sinks. Thermally conductive adhesives typically possess high thermal conductivity, insulation, and good adhesion properties, remaining stable at high temperatures to ensure rapid heat transfer to the heat sink, thereby protecting electronic devices from overheating damage.

[0031] Preferably, the insulating layer 40 is one of the following: aramid polymer insulating layer 40, polyethylene layer, polypropylene layer, acrylic resin, epoxy resin, and polyvinyl chloride. In this embodiment, the insulating layer 40 is an aramid polymer insulating layer 40, which has an H-class insulation rating, a dielectric strength of 18KV / mm, and a stable molecular structure. It is wear-resistant, high-temperature resistant, has excellent flame retardancy and insulation properties, and is used to separate the battery compartment of the battery box / phone case, thus improving safety.

[0032] Preferably, carbon fiber felt layers 30 are provided on both sides of the metal braided layer 10, and an adhesive layer 50 is provided on the insulating layer 40 of one side. The adhesive layer 50 can be one of acrylic adhesive, thermally conductive epoxy resin adhesive, thermally conductive silicone, or thermally conductive adhesive. The adhesive layer 50 serves to adhere the carbon fiber sheet to the designed position.

[0033] Example 2

[0034] Embodiment two includes the carbon fiber sheet of Embodiment one. Specifically, this application provides a mobile phone including a carbon fiber sheet; a screen, a mid-plate, and a back cover; the screen is attached to the front of the mid-plate; a battery compartment is disposed on the back of the mid-plate; a battery is attached to the battery compartment; the carbon fiber sheet is attached to the inner wall of the back cover and the battery compartment; the back cover is fastened to the mid-plate. More preferably, a carbon fiber sheet is also attached to the inside of the battery compartment. Therefore, this design has better cushioning performance and higher safety.

[0035] In summary, the key design feature of this invention is that the carbon fiber felt layer 30 is prefabricated, simplifying the structure of the carbon fiber sheet and significantly reducing manufacturing costs. Furthermore, this carbon fiber felt layer 30 also offers better cushioning performance, providing superior protection for the internal components of the mobile phone.

[0036] 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 carbon fiber sheet suitable for mobile phones, characterized in that: It includes a metal braided layer; at least one side of the metal braided layer is provided with a carbon fiber felt layer, and an adhesive layer is provided between the carbon fiber felt layer and the metal braided layer; an insulating layer is provided on the outer surface of the carbon fiber felt layer.

2. The carbon fiber sheet suitable for mobile phones according to claim 1, characterized in that: The structure of the metal braided layer is planar or wavy.

3. The carbon fiber sheet suitable for mobile phones according to claim 1, characterized in that: The metal braided layer comprises a first metal wire and a second metal wire woven together; wherein the diameter of the first metal wire is larger than the diameter of the second metal wire.

4. A carbon fiber sheet suitable for mobile phones according to any one of claims 1-3, characterized in that: Metal wires or carbon fiber filaments are pierced between the carbon fiber felt layer and the metal braided layer.

5. A carbon fiber sheet suitable for mobile phones according to claim 1, characterized in that: The adhesive layer is one of acrylic adhesive, thermally conductive epoxy resin adhesive, thermally conductive silicone, or thermally conductive adhesive.

6. A carbon fiber sheet suitable for mobile phones according to claim 1 or 5, characterized in that: The insulating layer is one of the following: aromatic polyamide polymer insulating layer, polyethylene layer, polypropylene layer, acrylic resin, epoxy resin, and polyvinyl chloride.

7. A carbon fiber sheet suitable for mobile phones according to claim 1, characterized in that: Both sides of the metal braided layer are provided with carbon fiber felt layers, and an adhesive layer is provided on the insulating layer of one side.

8. A mobile phone, characterized in that: The device includes a carbon fiber sheet as described in any one of claims 1-7; a screen, a middle plate, and a back cover, wherein the screen is attached to the front side of the middle plate; a battery compartment is provided on the back side of the middle plate; a battery is attached to the battery compartment; the carbon fiber sheet is attached to the inner wall of the back cover and the battery compartment; and the back cover is fastened to the middle plate.

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