Smart phone adopting multi-layer protective shell design
Smartphones with multi-layered protective shells utilize detachable connections and multi-layered material combinations to solve the problems of wear and insufficient strength in protective shells, achieving higher impact and scratch resistance and improving the overall protection of the phone.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHEN MEIBOER TECH CO LTD
- Filing Date
- 2025-05-15
- Publication Date
- 2026-04-21
AI Technical Summary
In the existing technology, the one-piece molded protective shell design is prone to scratching the appearance of the phone during installation, and has low strength, which is not conducive to long-term use.
It adopts a multi-layer protective shell design, including an upper shell and a lower shell, which can be detachably connected through snap-fit posts and snap-fit holes. The shell is equipped with a reinforced plastic layer, a carbon fiber layer, a silicon carbide coating and an alumina ceramic coating to enhance impact resistance and scratch resistance.
It effectively avoids friction damage during installation, enhances the phone's impact and scratch resistance, improves the strength and overall protection of the protective shell, ensures that the phone is less damaged when dropped or bumped, and provides additional cushioning and anti-slip effects.
Smart Images

Figure CN224154250U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of mobile phone protection technology, specifically relating to a smartphone with a multi-layer protective shell design. Background Technology
[0002] With the continuous development of the information society, electronic devices are being used more and more frequently in today's society. Among them, mobile phones are one of the most popular electronic devices. With the prevalence of mobile phones, the use of mobile phone cases for protection has also increased. Since mobile phone cases provide good protection for mobile phones, they are usually sold as accessories along with mobile phones. As mobile phone use becomes more frequent, the functions of mobile phones are also constantly being added to better protect them and facilitate user use.
[0003] A multi-layered protective phone case with patent publication number CN220935218U is described in the prior art. This patent includes a phone case body and a multi-layered buffer protection mechanism comprising a protective pad fixed to one side of the phone case body. The inner wall of the protective pad has a first buffer groove, and multiple rubber shafts are equidistantly engaged on the inner wall of the first buffer groove. Multiple buffer strips are equidistantly fixed on the other side of the phone case body, and each buffer strip has a through groove on its inner wall… When in use, the device has second buffer grooves on both sides, filled with protective cotton, to achieve protection on both sides, thereby improving the device's practicality. However, in actual use, the following shortcomings still exist: From a practical standpoint, the device's protective shell is a one-piece molded design. During installation, the phone needs to be pulled to squeeze into the protective shell, causing friction between the shell and the phone's outer edge, which can easily wear down the paint on the phone's outer edge, resulting in damage to the phone's appearance. At the same time, the protective shell has low strength, which is not conducive to long-term use.
[0004] Therefore, there is a need for a smartphone with a multi-layered protective shell design to solve the problems of easy wear and tear during installation and low strength of the protective shell in existing technologies, which are not conducive to long-term use. Utility Model Content
[0005] The purpose of this invention is to provide a smartphone with a multi-layered protective shell design to solve the problems mentioned in the background art.
[0006] To achieve the above objectives, this utility model provides the following technical solution: A smartphone with a multi-layer protective shell design includes an upper shell, a lower shell, and a phone body. Two elastic protrusions are fixedly connected to the front ends of both the upper and lower shells. Two first air cushions are fixedly connected to the inner walls of both the upper and lower shells. Two second air cushions are fixedly connected to the rear ends of both the upper and lower shells. Multiple heat dissipation holes are provided at the top of the upper shell and the bottom of the lower shell. Multiple snap-fit posts are fixedly connected to the bottom of the upper shell. Multiple snap-fit holes corresponding to the snap-fit posts are provided at the top of the lower shell. A lens slot is provided at the rear end of the upper shell. A mounting frame is fixedly connected to the rear end of the lens slot. A protective plate is rotatably connected to the rear end of the mounting frame. A volume button and a power button are fixedly connected to one side of the upper shell. A charging slot is provided at the bottom of the lower shell.
[0007] It should be noted in the solution that the upper shell includes a mobile phone case base layer, a reinforced plastic layer is fixedly connected to the outer wall of the mobile phone case base layer, a carbon fiber layer is fixedly connected to the outer wall of the reinforced plastic layer, a silicon carbide coating is fixedly connected to the outer wall of the carbon fiber layer, and an alumina ceramic coating is fixedly connected to the outer wall of the silicon carbide coating.
[0008] It is worth noting that the lower shell has the same internal structure as the upper shell.
[0009] Furthermore, it should be noted that anti-slip strips are fixedly connected to both sides of the lower housing.
[0010] In a preferred embodiment, a filter screen is fixedly connected to the inner wall of each of the plurality of heat dissipation holes.
[0011] In a preferred embodiment, the outer wall of the snap-fit post is tightly fitted to the inner wall of the snap-fit hole, and multiple sets of anti-slip rings are fixedly connected inside the snap-fit hole.
[0012] In a preferred embodiment, the inner wall of the charging slot is slidably connected with a dustproof buckle.
[0013] Compared with the prior art, the smartphone with a multi-layer protective shell design provided by this utility model has at least the following beneficial effects:
[0014] (1) By setting up an upper shell and a lower shell, the upper shell and the lower shell are detachably connected through snap-fit posts and snap-fit holes, so that the protective shell can be accurately and stably connected to the mobile phone body during installation, avoiding the friction and damage caused by pulling the shell in the traditional design; at the same time, the first air cushion and the second air cushion provide additional cushioning effect, which can effectively absorb external impact, making the mobile phone body safer during use.
[0015] (2) By setting up a reinforced plastic layer, a carbon fiber layer, a silicon carbide coating and an alumina ceramic coating, the combination of the reinforced plastic layer and the carbon fiber layer provides extremely strong impact resistance, which can effectively absorb external impact force and reduce the damage to the mobile phone body when dropped or collided; the silicon carbide coating and the alumina ceramic coating have extremely high hardness, which can significantly improve the scratch resistance of the mobile phone shell. The combination of multiple protective layers enhances the strength of the protective shell and greatly improves the overall protection capability of the mobile phone body. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the structure of this utility model;
[0017] Figure 2 This is a partial exploded view of the present invention;
[0018] Figure 3 This is a first-view view of the upper shell of this utility model;
[0019] Figure 4 This is a second-view view of the upper shell of this utility model;
[0020] Figure 5 This is a schematic diagram of the structure of the lower shell of this utility model;
[0021] Figure 6 This is a schematic diagram of the internal structure of the housing of this utility model.
[0022] In the diagram: 1. Upper shell; 101. Phone case base layer; 102. Reinforced plastic layer; 103. Carbon fiber layer; 104. Silicon carbide coating; 105. Alumina ceramic coating; 2. Lower shell; 3. Phone body; 4. Elastic protrusion; 5. First air cushion; 6. Second air cushion; 7. Heat dissipation hole; 8. Snap-fit post; 9. Snap-fit hole; 10. Lens slot; 11. Mounting frame; 12. Protective plate; 13. Volume buttons; 14. Power button; 15. Charging slot. Detailed Implementation
[0023] The present invention will be further described below with reference to the embodiments.
[0024] Please see Figure 1-6This utility model provides a smartphone with a multi-layer protective shell design, including an upper shell 1, a lower shell 2, and a phone body 3. Two elastic protrusions 4 are fixedly connected to the front end of the upper shell 1 and the front end of the lower shell 2. Two first air cushions 5 are fixedly connected to the inner wall of the upper shell 1 and the inner wall of the lower shell 2. Two second air cushions 6 are fixedly connected to the rear end of the upper shell 1 and the rear end of the lower shell 2. Multiple heat dissipation holes 7 are provided at the top of the upper shell 1 and the bottom of the lower shell 2. Multiple snap-fit posts 8 are fixedly connected to the bottom of the upper shell 1. Multiple snap-fit holes 9 corresponding to the snap-fit posts 8 are provided at the top of the lower shell 2. A lens slot 10 is provided at the rear end of the upper shell 1. A mounting frame 11 is fixedly connected to the rear end of the lens slot 10. A protective plate 12 is rotatably connected to the rear end of the mounting frame 11. A volume button 13 is fixedly connected to one side of the upper shell 1. A power button 14 is fixedly connected to one side of the upper shell 1. A charging slot 15 is provided at the bottom of the lower shell 2.
[0025] Further as Figure 6 As shown, it is worth noting that the upper casing 1 includes a base layer 101, to which a reinforced plastic layer 102 is fixedly connected. The reinforced plastic layer 102 has good toughness and can effectively absorb external impact, helping to reduce damage from drops or impacts, enhancing the drop resistance of the phone body 3, and preventing damage to internal components. A carbon fiber layer 103 is fixedly connected to the outer wall of the reinforced plastic layer 102. The carbon fiber layer 103 has high strength and lightweight characteristics, providing additional pressure resistance to the phone body 3 without adding extra weight. A silicon carbide coating 104 is fixedly connected to the outer wall of the fiber layer 103. The silicon carbide coating 104 has very high hardness, which can effectively prevent scratches and keep the appearance of the phone shell undamaged. It also has high temperature resistance, which can effectively dissipate heat when the phone body 3 is used under high load, preventing overheating from affecting the performance of the body 3. An alumina ceramic coating 105 is fixedly connected to the outer wall of the silicon carbide coating 104. The alumina ceramic coating 105 is a very wear-resistant material, which can greatly improve the corrosion resistance of the phone body 3, making it less susceptible to corrosion from oil, sweat and other chemicals during long-term use.
[0026] Further as Figure 1 and Figure 2 As shown, it is worth noting that the lower shell 2 has the same internal structure as the upper shell 1, and can play the same protective role when subjected to external impact, thus enhancing the overall impact resistance.
[0027] As can be seen from the above working process: by setting up the reinforced plastic layer 102, carbon fiber layer 103, silicon carbide coating 104 and alumina ceramic coating 105, the combination of the reinforced plastic layer 102 and carbon fiber layer 103 provides extremely strong impact resistance, which can effectively absorb external impact force and reduce the damage to the mobile phone body 3 when dropped or collided; the silicon carbide coating 104 and alumina ceramic coating 105 have extremely high hardness, which can significantly improve the scratch resistance of the mobile phone shell. The combination of multiple protective layers enhances the strength of the protective shell and greatly improves the overall protection capability of the mobile phone body 3.
[0028] Further as Figure 1 , Figure 2 and Figure 5 As shown, it is worth noting that anti-slip strips are fixedly connected to both sides of the lower housing 2. The anti-slip strips provide additional friction, making the device less likely to slip during use, especially when operating with one hand or during exercise. This effectively prevents the device from slipping out of the palm, increasing safety and comfort during use.
[0029] Further as Figure 1 , Figure 2 and Figure 5 As shown, it is worth noting that filters are fixedly connected to the inner walls of multiple heat dissipation holes 7. The filters can effectively prevent dust, dirt or other small particles from entering the inside of the mobile phone body 3, avoiding pollution or damage to the electronic components and internal structure of the mobile phone body 3, and keeping the internal environment of the mobile phone body 3 clean.
[0030] Further as Figure 2 , Figure 3 and Figure 5 As shown, it is worth noting that the outer wall of the snap-fit post 8 and the inner wall of the snap-fit hole 9 are tightly fitted together. This tight fit ensures a more stable connection between the upper shell 1 and the lower shell 2, preventing the shell from loosening or falling off due to external impact or vibration. The tight fit makes the shell structure more compact, improving the overall shock resistance of the phone body 3. Furthermore, multiple anti-slip rings are fixedly connected inside the snap-fit hole 9. In addition to providing good friction, these anti-slip rings also act as a buffer during snap-fit, helping to reduce wear or damage to the phone shell, especially in cases of frequent disassembly and assembly, ensuring the durability of the shell during long-term use.
[0031] Further as Figure 1 , Figure 2 and Figure 5 As shown, it is worth noting that the inner wall of the charging slot 15 is slidably connected with a dustproof clip to prevent dust, dirt, or other tiny particles from entering the charging slot 15, thereby protecting the charging interface from contamination or blockage. This avoids situations where poor contact or damage to the charging interface occurs due to dust accumulation.
[0032] The solution has the following working process: In actual use, the mobile phone body 3 is placed inside the upper shell 1 and the lower shell 2, and multiple snap-fit pins 8 are inserted into the corresponding snap-fit holes 9 to complete the connection between the upper shell 1 and the lower shell 2, thereby completing the installation of the mobile phone body 3. When not in use, the protective plate 12 is rotated to close, so that the protective plate 12 can protect the mobile phone lens.
[0033] In summary: By incorporating a reinforced plastic layer 102, a carbon fiber layer 103, a silicon carbide coating 104, and an alumina ceramic coating 105, the combination of the reinforced plastic layer 102 and the carbon fiber layer 103 provides extremely strong impact resistance, effectively absorbing external impact forces and reducing damage to the phone body 3 during drops or collisions. The silicon carbide coating 104 and the alumina ceramic coating 105 have extremely high hardness, significantly improving the scratch resistance of the phone casing. The combination of multiple protective layers enhances the strength of the protective casing and greatly improves the overall protection capability of the phone body 3. By setting up an upper shell 1 and a lower shell 2, which are detachably connected via snap-fit posts 8 and snap-fit holes 9, the protective casing can be precisely and securely connected to the phone body 3 during installation, avoiding friction and damage caused by pulling the casing in traditional designs. At the same time, the first air cushion 5 and the second air cushion 6 provide additional cushioning, effectively absorbing external impacts and making the phone body 3 safer during use.
Claims
1. A smart phone with a multi-layer protective shell design, comprising an upper shell (1), a lower shell (2) and a phone body (3), characterized in that: Two elastic protrusions (4) are fixedly connected to the front end of the upper housing (1) and the front end of the lower housing (2). Two first air cushions (5) are fixedly connected to the inner wall of the upper housing (1) and the inner wall of the lower housing (2). Two second air cushions (6) are fixedly connected to the rear end of the upper housing (1) and the rear end of the lower housing (2). Multiple heat dissipation holes (7) are opened on the top of the upper housing (1) and the bottom of the lower housing (2). Multiple snap-fit posts (8) are fixedly connected to the bottom of the upper housing (1). Multiple snap-fit holes (9) corresponding to the snap-fit posts (8) are opened on the top of the lower housing (2). A lens groove (10) is opened at the rear end of the upper housing (1). A mounting frame (11) is fixedly connected to the rear end of the lens groove (10). A protective plate (12) is rotatably connected to the rear end of the mounting frame (11). A volume button (13) is fixedly connected to one side of the upper housing (1). A power button (14) is fixedly connected to one side of the upper housing (1). A charging slot (15) is opened at the bottom of the lower housing (2).
2. The smartphone with multi-layered protective shell design according to claim 1, wherein: The upper housing (1) includes a mobile phone case base layer (101), a reinforced plastic layer (102) is fixedly connected to the outer wall of the mobile phone case base layer (101), a carbon fiber layer (103) is fixedly connected to the outer wall of the reinforced plastic layer (102), a silicon carbide coating (104) is fixedly connected to the outer wall of the carbon fiber layer (103), and an alumina ceramic coating (105) is fixedly connected to the outer wall of the silicon carbide coating (104).
3. A smartphone with a multi-layer protective shell design according to claim 1, characterized in that: The lower shell (2) has the same internal structure as the upper shell (1).
4. The smartphone with multi-layered protective shell design of claim 1, wherein: Anti-slip strips are fixedly connected to both sides of the lower housing (2).
5. The smartphone of claim 1, wherein: the smartphone is designed with a multi-layered protective housing. Each of the heat dissipation holes (7) has a filter screen fixedly connected to its inner wall.
6. The smartphone of claim 1, wherein: the smartphone is designed with a multi-layered protective housing. The outer wall of the snap-fit post (8) is tightly fitted to the inner wall of the snap-fit hole (9), and multiple anti-slip rings are fixedly connected inside the snap-fit hole (9).
7. The smartphone of claim 1, wherein: the smartphone is designed with a multi-layered protective housing. The inner wall of the charging slot (15) is slidably connected with a dustproof buckle.
Citation Information
Patent Citations
Multi-layer protection type mobile phone shell
CN220935218U