Crash-resistant mobile phone shell made of carbon fiber composite material

Abstract

The invention relates to an anti-drop mobile phone shell with a carbon fiber composite material structure. The shell mainly comprises three parts, namely a shell back plate body structure, a shell frame structure and a shell front four-corner buffer structure. Wherein the back plate body structure of the shell adopts a three-layer structure design, and comprises a hollow carbon fiber composite material layer on the inner surface of the plate body, a middle porous light foam buffer layer and an outer surface hollow carbon fiber composite material layer. And the shell frame structure adopts a carbon fiber three-dimensional woven structure to cover the shell back plate body structure. According to the anti-falling mobile phone shell, the structural design combination of hollowing, three-dimensional weaving, four-corner buffering and the like is adopted, and the heat dissipation efficiency, the friction performance and the impact performance of the mobile phone shell are effectively improved respectively.

Description

Technical Field

[0001] The present invention relates to a mobile phone accessory, and particularly to a drop-proof mobile phone case made of a carbon fiber composite material structure. Background Art

[0002] Most current smart phones are made of alloy materials, and most of their screens are made of high-performance glass materials. Therefore, during daily use, the screen is often broken and the frame is deformed and damaged due to accidental dropping or knocking. People usually put a plastic mobile phone case on the phone for protection. However, most of these mobile phone cases are made of plastic materials, and the close fit between the case and the phone will lead to poor heat dissipation effect of the phone, increasing the difficulty of heat conduction. During use, it is inevitable that the phone will get hot, which brings a significant problem to the life of the phone battery and affects the normal use effect of users.

[0003] Some carbon fiber mobile phone cases with a cooling function are disclosed in existing patents. See patent CN202121125160.0. However, the heat dissipation and cooling of this patent are mainly achieved by adding a cooling fan and cooling holes on the case; although this method can achieve the heat dissipation of the mobile phone case, this design causes the overall weight of the mobile phone case to increase, and the practicality is relatively poor; in other related patents of carbon fiber mobile phone cases, although it is disclosed that the mobile phone case is made of carbon fiber, specifically, see CN218006317U, CN214799582U, etc., the cooling effect is poor. Summary of the Invention

[0004] In order to solve the above problems, the present invention proposes a drop-proof mobile phone case structure made of a carbon fiber composite material, which can achieve the cooling of the mobile phone case.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is as follows: A drop-proof mobile phone case structure made of a carbon fiber composite material, which includes three components: a back plate structure of the case, a frame structure of the case, and a buffer structure at the four corners of the front of the case, specifically as follows: The back plate structure of the case consists of a first hollow carbon fiber composite layer, a porous lightweight foam buffer layer, and a second hollow carbon fiber composite layer from the inner layer to the outer layer; the first hollow carbon fiber composite layer and the second hollow carbon fiber composite layer are made of carbon fiber composite materials with different strengths, and the carbon fiber strength and stiffness of the second hollow carbon fiber composite layer are greater than those of the first hollow carbon fiber composite layer. The frame structure of the case is arranged around the outer periphery of the back plate structure of the case. The frame structure of the case is clamped together with the back plate structure of the case, and the frame structure of the case is formed by a carbon fiber reinforced thermosetting resin matrix and adopts a three-dimensional braided form. The buffer structure at the four corners on the front of the housing is located at the four corners of the housing frame structure and is integrally formed with the housing frame structure.

[0006] As a further technical solution, the first hollow carbon fiber composite layer is arranged in a hollow two-dimensional weaving pattern using high-strength carbon fiber ribbon structures, forming a square mesh structure distribution.

[0007] As a further technical solution, the two-dimensional weaving arrangement of the first hollow carbon fiber composite layer can be designed using any one of the weaving structures of plain weave, twill weave, or satin weave.

[0008] As a further technical solution, the thickness of the high-strength carbon fiber layer of the first hollow carbon fiber composite layer is in the range of 0.03 - 0.12 mm.

[0009] As a further technical solution, the second hollow carbon fiber composite layer is arranged in a hollow two-dimensional weaving pattern using high-strength carbon fiber ribbon structures, forming a square mesh structure distribution; or it is processed using high-modulus carbon fiber tows, and its arrangement can also adopt an orthogonal laminated structure or an oblique laminated structure of a single-layer unidirectional arrangement structure.

[0010] As a further technical solution, the thickness of the second hollow carbon fiber composite layer can be in the range of 0.06 - 0.12 mm.

[0011] As a further technical solution, the porous lightweight foam buffer layer can be flexibly selected from any one of polyurethane, polyethylene, or PMI, and the thickness of the buffer layer is controlled in the range of 0.05 - 0.2 mm.

[0012] As a further technical solution, for the first hollow carbon fiber composite layer and the second hollow carbon fiber composite layer, their carbon fiber tapes are impregnated and compounded using a thermosetting resin matrix.

[0013] As a further technical solution, for the housing frame structure, the edge connecting to the mobile phone screen on the front is 0.5 - 2 mm higher than the mobile phone screen, and the edge width is controlled in the range of 3 - 6 mm.

[0014] The housing frame structure is formed using a high-strength carbon fiber-reinforced thermosetting resin matrix.

[0015] As a further technical solution, the buffer structure at the four corners on the front is designed as a spherical, cube-shaped, or cuboid-shaped hollow structure, the center of this structure is hollow, and the surface is composed of a carbon fiber composite layer with a thickness of 0.2 - 0.4 mm.

[0016] Compared with traditional plastic mobile phone cases, the anti-drop mobile phone case made of carbon fiber composite material of the present invention has the following advantages: The back plate of the mobile phone case of the present invention adopts a hollow structure of carbon fiber composite material, which can effectively ensure the heat dissipation efficiency inside the mobile phone, and ensure the comfort and service life of the mobile phone during use; moreover, the inner hollow carbon fiber composite material layer and the outer hollow carbon fiber composite material layer adopt carbon fiber composite materials with different strengths. The carbon fiber strength and height of the outer hollow carbon fiber composite material layer are greater than the carbon fiber strength and stiffness of the inner hollow carbon fiber composite material layer. Through this layered design, on the one hand, the manufacturing cost of the mobile phone case can be saved (different layers are matched with different materials according to different performance requirements), and on the other hand, the overall strength and stiffness of the back plate of the mobile phone case can be ensured.

[0017] The buffer structure at the four corners of the front of the case in the present invention is integrally formed with the case frame structure, and then inserted together with the back plate structure of the case, which is convenient and fast to manufacture.

[0018] The case frame structure of the present invention adopts a frame of carbon fiber three-dimensional braided structure. Compared with the two-dimensional braided structure, it has strong interlayer bonding and good anti-delamination ability, and has higher strength and stiffness, which can better avoid problems such as bump damage to the frame structure during the use of the mobile phone and protect the normal use of the mobile phone.

[0019] The buffer structure at the four corners of the front of the case of the present invention, its height and the height of the frame are both higher than the mobile phone screen, which can ensure that the mobile phone screen is not damaged by bumps and fractures during the fall of the mobile phone with the front side facing down. Description of the Drawings

[0020] Figure 1 It is a schematic diagram of the overall structure of an anti-drop mobile phone case made of carbon fiber composite material of the present invention and its structure.

[0021] Figure 2 It is a schematic diagram of the back plate structure of an anti-drop mobile phone case made of carbon fiber composite material of the present invention and its structure.

[0022] Figure 3 It is a schematic diagram of the buffer structure at the four corners of the front of an anti-drop mobile phone case made of carbon fiber composite material of the present invention and its structure.

[0023] In the figure: 1. Outer surface hollow carbon fiber composite material layer, 2. Intermediate porous lightweight foam buffer layer, 3. Inner surface hollow carbon fiber composite material layer, 4. Case frame structure, 5. Buffer structure at the four corners of the front of the case, 6. Surface of the buffer structure at the four corners of the front of the case. Detailed Embodiment

[0024] It should be noted that the following detailed description is illustrative and aims to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present invention pertains.

[0025] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present invention. As used herein, unless the present invention clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof; The present invention will be described in detail below with reference to specific drawings: This embodiment provides a fall-proof mobile phone housing structure made of carbon fiber composite material. According to Figure 1 、 Figure 2 、 Figure 3 As shown, it is composed of three parts: the back plate body structure of the mobile phone housing, the housing frame structure 4, and the buffer structure at the four corners of the front of the housing 5. Specifically, the back plate body structure of the mobile phone housing adopts a three-layer structure design, including an inner surface hollowed-out carbon fiber composite material layer 3, a middle porous lightweight foam buffer layer 2, and an outer surface hollowed-out carbon fiber composite material layer 1; among them, the inner surface hollowed-out carbon fiber composite material layer 3 is the first hollowed-out carbon fiber composite material layer; the outer surface hollowed-out carbon fiber composite material layer 1 is the first hollowed-out carbon fiber composite material layer; the design of the three-layer structure will be described in detail below: In this embodiment, the inner surface hollowed-out carbon fiber composite material layer 1 in the above-mentioned mobile phone housing back plate structure is arranged in a hollowed-out two-dimensional weaving pattern with high-strength carbon fiber strips, forming a square mesh hole structure distribution. The width of the carbon fiber strip is controlled within the range of 3-5 mm, and the square hollowed-out mesh hole is a square hole, and the side length of the hole is controlled within the range of 0.5-1 mm to ensure the strength of its inner layer. The two-dimensional weaving arrangement method of the inner surface hollowed-out carbon fiber composite material layer in the mobile phone housing back plate structure can be designed using any one of the plain weave, twill weave, and satin weave structures. The high-strength carbon fiber of the inner surface hollowed-out carbon fiber composite material layer can be selected from any one of T300, T700, T800, T1000, T1200, etc. and is not limited to the above fiber types. The fiber tow used can be processed using any one of 3K, 6K, and 12K types; the thickness of the inner surface hollowed-out carbon fiber composite material layer can be within the range of 0.03-0.12 mm and can be flexibly adjusted according to design requirements. By designing the inner surface hollowed-out carbon fiber composite material layer 1, the strength of the inner surface of the mobile phone housing back plate is ensured to a certain extent, and the anti-breaking performance of the mobile phone housing is improved.

[0026] In this embodiment, the outer surface of the back plate structure of the mobile phone housing is hollowed out with a carbon fiber composite material layer. The carbon fiber type and two-dimensional weaving arrangement method of the above-mentioned inner surface hollowed-out layer can be adopted. In particular, high-modulus carbon fiber tows can also be used for processing, and its arrangement method can also adopt an orthogonal laminated structure or an oblique laminated structure of a single-layer unidirectional arrangement structure; for high-modulus carbon fiber, any one of M40, M40J, M55, M55J, M60, and M60J can be adopted. The width of its fiber tape is as described in the above inner surface hollowed-out layer, and its mesh shape and size are also as described above. The unidirectional arrangement oblique laminated structure of the outer surface hollowed-out carbon fiber composite material layer can adopt any one or a combination of ±30°, ±60°, and ±45° fiber arrangement structures; the thickness of the outer surface hollowed-out carbon fiber composite material layer can be adjusted flexibly within the range of 0.06-0.12 mm; the main purpose of doing this is to improve the rigidity of the outer surface hollowed-out carbon fiber composite material layer of the back plate structure of the mobile phone housing and improve the anti-deformation performance; In this embodiment, the middle porous lightweight foam buffer layer of the back plate structure of the mobile phone housing can be flexibly selected from any one of polyurethane, polyethylene, PMI, etc., and the thickness of its buffer layer is controlled within the range of 0.05-0.2 mm.

[0027] In this embodiment, for the hollowed-out carbon fiber composite material layer on the inner surface and the outer surface hollowed-out carbon fiber composite material layer of the back plate of the mobile phone housing, the high-strength or high-modulus carbon fiber tapes are all impregnated and formed by a thermosetting resin matrix. Further, the thermosetting resin matrix in this embodiment can be selected from types such as epoxy resin, phenolic resin, unsaturated polyester resin, urea-formaldehyde resin, and silicone resin, and is not limited to the above resin types. Finally, the resin matrix content is controlled within the range of 20-40% and adjusted flexibly.

[0028] In this embodiment, through the design of materials, dimensions, processes, etc. for the three-layer structure in the back plate structure of the mobile phone housing, the back plate structure of the mobile phone housing forms a structure similar to being soft inside and rigid outside. When the mobile phone accidentally falls or is knocked and stressed, it can not only ensure that the screen does not break to a certain extent, but also play a certain buffering role for the mobile phone; at the same time, through the selection of different materials, the manufacturing cost of the mobile phone housing can also be saved. Specifically, the high-modulus carbon fiber of the M series is more expensive than the T series. Therefore, the low-cost T series is used for the inner layer, and the high-cost M series is used for the outer layer. Through different layer designs, the overall strength and stiffness of the back plate of the mobile phone housing are further ensured.

[0029] Furthermore, in the housing frame structure of this embodiment, the back plate structure of the housing is wrapped within the frame thickness layered structure. The back of the housing frame structure is designed with a card slot structure for connection with the housing back plate. The edge connecting to the mobile phone screen on the front is 0.5 - 2 mm higher than the mobile phone screen, and its edge width is controlled within the range of 3 - 6 mm. The housing edge structure is formed by using a high-strength carbon fiber reinforced thermosetting resin matrix. Any one of the types such as T300, T700, T800, T1000, T1200, etc. of high-strength carbon fiber can be used, and it is not limited to the above fiber types. The thermosetting resin matrix is of the type as described above, and its resin matrix content is flexibly adjusted within the range of 30 - 60%. The arrangement structure of the high-strength carbon fiber in the housing edge structure can adopt a three-dimensional braided form, and any one of the braided structures such as three-dimensional four-directional, three-dimensional five-directional, three-dimensional six-directional, and three-dimensional seven-directional can be used; the three-dimensional braided structure has high strength and stiffness in three directions; the interlayer bonding is strong, the delamination resistance ability is good, and the performance is relatively uniform in three directions; therefore, through the design of the materials, dimensions, processes, etc. of the housing frame structure, the housing frame structure has better stiffness and strength.

[0030] Furthermore, the front four-corner buffer structure of the housing in this embodiment is to embed the front four-corner buffer structure of the housing at specific positions at the four corners during the forming process of the housing edge structure. The buffer structure can be designed as a spherical, cube or cuboid-shaped hollow structure. The center of this structure is hollow, and the surface is composed of a carbon fiber composite material layer with a thickness of 0.2 - 0.4 mm. Any one of the above-mentioned high-strength carbon fibers can be used for the carbon fiber, and its fibers can adopt a laminated combination structure of a two-dimensional braided structure of plain weave, twill weave or satin weave. The resin of the surface composite material layer of the front four-corner buffer of the housing can be formed by using a thermoplastic resin matrix. Any one of the types such as polyethylene, polypropylene, polyamide, polyurethane, polyether ketone, polyether ether ketone, etc. can be used for the matrix type, and it is not limited to these types. Finally, the resin matrix content is flexibly adjusted within the range of 30 - 60%.

[0031] The front four-corner buffer structure of the housing in this embodiment is integrally formed with the housing frame structure, and then inserted together with the back plate structure of the housing, which is convenient and fast to manufacture; the housing frame structure in this embodiment uses a frame of a carbon fiber three-dimensional braided structure, which has stronger interlayer bonding and better delamination resistance ability compared with the two-dimensional braided structure, and has higher strength and stiffness, and can better avoid problems such as knocking and damage of the frame structure during the use of the mobile phone, protecting the normal use of the mobile phone; the front four-corner buffer structure of the housing in this embodiment, its height and the frame height are both higher than the mobile phone screen, and it can ensure that the mobile phone screen is not damaged by knocking and cracking during the process of the mobile phone falling face down.

[0032] Embodiment 1 The inner surface hollowed carbon fiber composite layer is arranged in a hollow plain weave two-dimensional pattern with a T700 high-strength 6K carbon fiber ribbon structure, and is compounded with epoxy resin to form a square mesh structure distribution. The width of the carbon fiber ribbon is 3 mm, the square hollow mesh is a square hole, the side length of the hole is controlled at 0.5 mm, the thickness of the inner surface hollowed carbon fiber composite layer is 0.03 mm, and the resin matrix content is 20%. The middle porous lightweight foam buffer layer uses polyurethane, and the thickness of the buffer layer is 0.05 mm. The outer surface hollowed carbon fiber composite layer is arranged in a hollow ±30° unidirectional arrangement and cross-laminated structure with an M55 high-modulus carbon fiber ribbon structure, and is compounded with epoxy resin to form a square mesh structure distribution. The width of the carbon fiber ribbon is 3 mm, the square hollow mesh is a square hole, and the side length of the hole is controlled at 0.5 mm. The thickness of the outer surface hollowed carbon fiber composite layer is 0.05 mm, and the resin matrix content is 30%.

[0033] The back plate structure of the shell is covered within the border thickness layered structure. The back of the shell border structure is designed with a card slot structure to connect with the shell back plate. The edge connecting to the mobile phone screen on the front is 0.5 mm higher than the mobile phone screen, and its edge width is controlled within 3 mm. The shell edge structure is formed by T800 high-strength carbon fiber reinforced epoxy resin matrix, and the arrangement structure can adopt a three-dimensional five-directional three-dimensional weaving form, and the resin matrix content is 30%.

[0034] The buffer structure at the four corners of the front of the shell selects a spherical hollow structure. The center of this structure is hollow, and the surface is formed into a two-dimensional plain weave structure by a T1000 high-strength carbon fiber composite polypropylene matrix with a thickness of 0.2 mm, and the resin matrix content is 30%. Specific Example 1 is constituted by the above structures.

[0035] Example Two The inner surface hollowed carbon fiber composite layer is arranged in a hollow twill weave two-dimensional pattern with a T300 high-strength 12K carbon fiber ribbon structure, and is compounded with phenolic resin to form a square mesh structure distribution. The width of the carbon fiber ribbon is 4 mm, the square hollow mesh is a square hole, the side length of the hole is controlled at 0.8 mm, the thickness of the inner surface hollowed carbon fiber composite layer is 0.05 mm, and the resin matrix content is 30%. The middle porous lightweight foam buffer layer uses polyethylene, and the thickness of the buffer layer is 0.1 mm. The outer surface hollowed carbon fiber composite layer is arranged in a hollow ±60° unidirectional arrangement and cross-laminated structure with an M55J high-modulus carbon fiber ribbon structure, and is compounded with phenolic resin to form a square mesh structure distribution. The width of the carbon fiber ribbon is 4 mm, the square hollow mesh is a square hole, and the side length of the hole is controlled at 0.8 mm. The thickness of the outer surface hollowed carbon fiber composite layer is 0.05 mm, and the resin matrix content is 30%.

[0036] The back plate structure of the housing is wrapped within the border thickness layered structure. The back of the housing border structure is designed with a card slot structure for connection with the housing back plate. The edge connecting to the mobile phone screen on the front is 1 mm higher than the mobile phone screen, and its edge width is controlled within 4 mm. The housing edge structure is formed using a T1000 high-strength carbon fiber reinforced phenolic resin matrix, and the arrangement structure can adopt a three-dimensional six-directional three-dimensional braiding form, with the resin matrix content being 30%.

[0037] For the buffer structure at the four corners on the front of the housing, a cubic hollow structure is selected. The center of this structure is hollow, and the surface is formed into a two-dimensional twill braiding structure using a T300 high-strength carbon fiber composite polyethylene matrix with a thickness of 0.3 mm, and the resin matrix content is 40%. Specific Example 2 is constituted by the above structure.

[0038] Example Three The inner surface hollow carbon fiber composite material layer is arranged in a hollow plain weave two-dimensional pattern using a T800 high-strength 3K carbon fiber ribbon tow structure, and is compounded with unsaturated polyester resin to form a square mesh hole structure distribution. The width of the carbon fiber ribbon is 5 mm, the square hollow mesh holes are square holes, the side length of the holes is controlled within 0.8 mm, the thickness of the inner surface hollow carbon fiber composite material layer is 0.03 mm, and the resin matrix content is 20%. The middle porous lightweight foam buffer layer uses polyurethane, and the thickness of the buffer layer is 0.05 mm. The outer surface hollow carbon fiber composite material layer is arranged in a hollow ±30° unidirectional arrangement and cross-laminated structure using an M55 high-modulus carbon fiber ribbon tow structure, and is compounded with unsaturated polyester to form a square mesh hole structure distribution. The width of the carbon fiber ribbon is 5 mm, the square hollow mesh holes are square holes, the side length of the holes is controlled within 0.8 mm. The thickness of the outer surface hollow carbon fiber composite material layer is 0.05 mm, and the resin matrix content is 30%.

[0039] The back plate structure of the housing is wrapped within the border thickness layered structure. The back of the housing border structure is designed with a card slot structure for connection with the housing back plate. The edge connecting to the mobile phone screen on the front is 0.5 mm higher than the mobile phone screen, and its edge width is controlled within 3 mm. The housing edge structure is formed using a T800 high-strength carbon fiber reinforced unsaturated polyester resin matrix, and the arrangement structure can adopt a three-dimensional four-directional three-dimensional braiding form, with the resin matrix content being 30%.

[0040] For the buffer structure at the four corners on the front of the housing, a cuboid hollow structure is selected. The center of this structure is hollow, and the surface is formed into a two-dimensional satin braiding structure using a T800 high-strength carbon fiber composite polyether ether ketone matrix with a thickness of 0.3 mm, and the resin matrix content is 30%. Specific Example 3 is constituted by the above structure.

[0041] Example Four The inner surface hollowed carbon fiber composite layer is arranged in a hollow twill two-dimensional weaving pattern with a T1200 high-strength 6K carbon fiber ribbon tow structure, and is compounded with urea-formaldehyde resin to form a square mesh structure distribution. The width of the carbon fiber tape is 5 mm, the square hollow mesh is a square hole, the side length of the hole is controlled at 1 mm, the thickness of the inner surface hollowed carbon fiber composite layer is 0.1 mm, and the resin matrix content is 30%. The middle porous lightweight foam buffer layer uses polyurethane, and the thickness of the buffer layer is 0.2 mm. The outer surface hollowed carbon fiber composite layer is arranged in a hollow ±45° unidirectional arrangement and cross-laminated structure with an M40J high-modulus carbon fiber ribbon tow structure, and is compounded with urea-formaldehyde resin to form a square mesh structure distribution. The width of the carbon fiber tape is 5 mm, the square hollow mesh is a square hole, and the side length of the hole is controlled at 1 mm. The thickness of the outer surface hollowed carbon fiber composite layer is 0.1 mm, and the resin matrix content is 20%.

[0042] The back plate structure of the shell is covered within the border thickness layered structure. The back of the shell border structure is designed with a slot structure to connect with the shell back plate. The edge connecting to the mobile phone screen on the front is 0.5 mm higher than the mobile phone screen, and its edge width is controlled within 3 mm. The shell edge structure is formed by using a T800 high-strength carbon fiber reinforced urea-formaldehyde resin matrix, and the arrangement structure can adopt a three-dimensional seven-directional three-dimensional weaving form, and the resin matrix content is 40%.

[0043] The buffer structure at the four corners of the front of the shell selects a spherical hollow structure. The center of this structure is hollow, and the surface is formed into a two-dimensional twill weaving structure by using a T1000 high-strength carbon fiber composite polyether ketone matrix with a thickness of 0.4 mm, and the resin matrix content is 40%. The specific embodiment 4 is constituted by the above structures.

Claims

1. A carbon fiber composite material anti-fall mobile phone shell, characterized in that: include: The back plate structure of the shell comprises, from the inner layer to the outer layer, a first hollow carbon fiber composite material layer, a porous lightweight foam buffer layer, and a second hollow carbon fiber composite material layer; The first hollow carbon fiber composite material layer and the second hollow carbon fiber composite material layer are made of carbon fiber composite materials with different strengths, and the carbon fiber strength and rigidity of the second hollow carbon fiber composite material layer are greater than the carbon fiber strength and rigidity of the first hollow carbon fiber composite material layer; The shell frame structure is arranged around the outer periphery of the shell back plate structure, the shell frame structure and the shell back plate structure are clamped together, and the shell frame structure is formed by a carbon fiber reinforced thermosetting resin matrix in a three-dimensional woven form; The buffer structures at the four corners of the front side of the shell are located at the four corners of the shell frame structure and are integrally formed with the shell frame structure.

2. The carbon fiber composite material anti-fall mobile phone housing according to claim 1, characterized in that: The first hollow carbon fiber composite material layer adopts a high-strength carbon fiber belt structure for hollow two-dimensional weaving arrangement to form a square mesh structure distribution.

3. The carbon fiber composite material anti-fall mobile phone housing according to claim 2, characterized in that: The two-dimensional weaving arrangement of the first hollow carbon fiber composite material layer can be designed using any one of plain, twill and satin weaving structures.

4. The carbon fiber composite material anti-fall mobile phone housing according to claim 2, characterized in that: The thickness of the high-strength carbon fiber layer of the first hollow carbon fiber composite material layer is in the range of 0.03-0.12 mm.

5. The carbon fiber composite material anti-fall mobile phone housing according to claim 1, characterized in that: The second hollow carbon fiber composite material layer adopts a high-strength carbon fiber strip structure for hollow two-dimensional weaving arrangement to form a square mesh structure distribution; or it is processed by high modulus carbon fiber tow, and its arrangement method can also adopt an orthogonal stacking structure or a diagonal stacking structure of a single-layer unidirectional arrangement structure.

6. The carbon fiber composite material anti-fall mobile phone housing according to claim 1, characterized in that: The thickness of the second hollow carbon fiber composite material layer may be in the range of 0.06-0.12 mm.

7. The carbon fiber composite material anti-fall mobile phone housing according to claim 1, characterized in that: The porous lightweight foam buffer layer can be made of any one of polyurethane, polyethylene or PMI, and the thickness of the buffer layer is controlled within the range of 0.05-0.2 mm.

8. The carbon fiber composite material anti-fall mobile phone housing according to claim 1, characterized in that: The carbon fiber strips of the first hollow carbon fiber composite material layer and the second hollow carbon fiber composite material layer are both formed by impregnation and composite molding with a thermosetting resin matrix.

9. The carbon fiber composite material anti-fall mobile phone housing according to claim 1, characterized in that: The shell frame structure has an edge connected to the mobile phone screen on the front side that is 0.5-2mm higher than the mobile phone screen, and its edge width is controlled within the range of 3-6mm; the shell frame structure is formed by a high-strength carbon fiber reinforced thermosetting resin matrix.

10. The carbon fiber composite material anti-fall mobile phone housing according to claim 1, characterized in that: The front four-corner buffer structure is designed as a spherical, cubic or rectangular hollow structure, the center of the structure is hollow, and the surface is composed of a carbon fiber composite material layer with a thickness of 0.2-0.4mm.

Images