A high-strength mobile phone case
This high-strength phone case, designed with a layered structure, combines a wear-resistant layer and multiple fiber layers to solve the problems of insufficient strength, wear resistance, and impact resistance in existing phone cases. It achieves efficient protection and wear resistance and impact resistance for long-term use, reducing the frequency of replacement.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DONGGUAN HWCASE CO LTD
- Filing Date
- 2025-06-30
- Publication Date
- 2026-06-19
AI Technical Summary
Existing phone case materials are insufficient in terms of strength, wear resistance, and impact resistance, failing to effectively protect the phone. Furthermore, the lack of a layered structure in the design results in poor overall performance.
It adopts a unique layered structure design, including a combination of a wear-resistant layer, a first fiber layer, a second fiber layer and a third fiber layer. The wear-resistant layer is composed of a polyurethane coating or a nano-ceramic coating. The fiber layer is made of aramid fiber and composite glass fiber. The second fiber layer contains elastic microspheres and is bonded by a hot melt adhesive film. The frame is made of magnesium-aluminum alloy or polycarbonate material and is designed to absorb impact energy.
It significantly improves the wear resistance and impact resistance of the phone case, protects the phone from drops and scratches, extends its service life, maintains its portability and reduces the frequency of replacement, thus reducing user costs.
Smart Images

Figure CN224385554U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of mobile phone case technology, specifically to a high-strength mobile phone case. Background Technology
[0002] With the widespread use of smartphones, the market demand for phone cases, as an important accessory for protecting mobile phones, is growing daily. Existing phone case materials are mostly plastic, silicone, or metal, which, while providing some protection, still fall short in terms of strength, abrasion resistance, and impact resistance.
[0003] Traditional phone cases often fail to effectively protect against external impacts such as drops and scratches that may occur during daily use, making the phone susceptible to damage during use. In addition, existing phone cases often lack a layered structure in their design and fail to make full use of the characteristics of different materials, resulting in poor overall performance. Summary of the Invention
[0004] In order to overcome the shortcomings and deficiencies of the existing technology, the purpose of this utility model is to provide a high-strength mobile phone case. Through a unique layered structure design, combined with a wear-resistant layer and multiple fiber layers, it not only improves the strength and wear resistance of the mobile phone case, but also effectively absorbs impact energy, thereby protecting the mobile phone and extending the service life of the mobile phone case.
[0005] This utility model is achieved through the following technical solution:
[0006] A high-strength mobile phone case includes a housing for housing a mobile phone. The housing includes a frame and a coating that fits into the cutout of the frame. The coating includes a wear-resistant layer, a first fiber layer, a second fiber layer, and a third fiber layer stacked from top to bottom. The wear-resistant layer is used for wear and scratch resistance. The first and third fiber layers are used to improve the strength of the coating. The second fiber layer is used to absorb impact energy.
[0007] The wear-resistant layer is a polyurethane coating or a nano-ceramic coating with a thickness of 0.05-0.2 mm.
[0008] Both the first fiber layer and the third fiber layer are made of aramid fibers.
[0009] The second fiber layer is made of composite glass fiber, and elastic microspheres are dispersed in the second fiber layer. The elastic microspheres are made of silicone rubber or polyurethane and have a particle size of 10-50 μm.
[0010] A magnet is provided between the first fiber layer and the third fiber layer, and the second fiber layer has a through hole adapted to the shape of the magnet, with the magnet embedded in the through hole.
[0011] The wear-resistant layer is bonded to the first fiber layer and to each fiber layer by a hot melt adhesive film, the hot melt adhesive film having a melting point of 80-120℃.
[0012] The frame is made of magnesium-aluminum alloy or polycarbonate, and its inner side has a groove structure that engages with the edge of the coating.
[0013] The total thickness of the coating is 0.5-1.2 mm, and the thickness ratio of the first fiber layer to the third fiber layer is 1:1 to 1:1.5.
[0014] The beneficial effects of this utility model are:
[0015] This invention provides a high-strength phone case that significantly improves its wear resistance and impact resistance through a combination of a wear-resistant layer and multiple fiber layers, effectively preventing damage to the phone from drops or scratches. The second fiber layer is specifically designed to absorb impact energy, effectively mitigating the transmission of impact force during accidental drops and further protecting the phone's internal components. Furthermore, the layered design allows the properties of different materials to be fully utilized, enhancing overall strength while maintaining the phone case's lightweight nature, avoiding the bulkiness of traditional phone cases. Due to its superior wear resistance and impact resistance, this phone case maintains a good appearance and performance over extended use, reducing the need for frequent case replacements and thus lowering user costs. Attached Figure Description
[0016] The present invention will be further described with reference to the accompanying drawings, but the embodiments in the drawings do not constitute any limitation on the present invention. For those skilled in the art, other drawings can be obtained based on the following drawings without creative effort.
[0017] Figure 1 This is a three-dimensional structural schematic diagram of the utility model.
[0018] Figure Labels
[0019] Frame--100, wear-resistant layer--201, first fiber layer--202, second fiber layer--203, third fiber layer--204, magnet--205, through hole--206. Detailed Implementation
[0020] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.
[0021] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0022] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0023] like Figure 1 As shown, this embodiment discloses a high-strength mobile phone case, including a housing for accommodating a mobile phone. The housing includes a frame and a coating attached to the cutout of the frame. The coating includes a wear-resistant layer, a first fiber layer, a second fiber layer and a third fiber layer stacked from top to bottom. The wear-resistant layer is used for wear and scratch resistance. The first fiber layer and the third fiber layer are used to improve the strength of the coating. The second fiber layer is used to absorb impact energy.
[0024] In this embodiment, the wear-resistant layer is a polyurethane coating or a nano-ceramic coating with a thickness of 0.05-0.2 mm.
[0025] Furthermore, both the first fiber layer and the third fiber layer are made of aramid fibers.
[0026] Furthermore, the second fiber layer is made of composite glass fiber, and elastic microspheres are dispersed in the second fiber layer. The elastic microspheres are made of silicone rubber or polyurethane and have a particle size of 10-50 μm.
[0027] Furthermore, a magnet is disposed between the first and third fiber layers, and the second fiber layer has a through hole adapted to the shape of the magnet, with the magnet embedded in the through hole. By providing the magnet, the phone case of this embodiment can conveniently perform operations such as invalid charging.
[0028] Furthermore, the wear-resistant layer is bonded to the first fiber layer and to each fiber layer by a hot melt adhesive film, the hot melt adhesive film having a melting point of 80-120°C.
[0029] Furthermore, the frame is made of magnesium-aluminum alloy or polycarbonate, and its inner side is provided with a groove structure that engages with the edge of the coating.
[0030] Furthermore, the total thickness of the coating is 0.5-1.2 mm, wherein the thickness ratio of the first fiber layer to the third fiber layer is 1:1 to 1:1.5.
[0031] In summary, this embodiment of a high-strength phone case significantly improves the wear resistance and impact resistance of the phone case by combining a wear-resistant layer and multiple fiber layers, effectively preventing damage to the phone when dropped or scratched. The second fiber layer is specifically designed to absorb impact energy, effectively mitigating the transmission of impact force during accidental drops and further protecting the safety of the phone's internal components. In addition, the layered design allows the properties of different materials to be fully utilized, improving overall strength while maintaining the phone case's lightweight nature, avoiding the problem of traditional phone cases being bulky. Due to its superior wear resistance and impact resistance, the phone case of this invention can maintain a good appearance and performance during long-term use, reducing the need for frequent phone case replacements and thus lowering user costs.
[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the essence and scope of the technical solutions of this utility model.
Claims
1. A high-strength mobile phone case, comprising a housing for accommodating a mobile phone, characterized in that, The housing includes a frame and a coating attached to the cutout of the frame. The coating includes a wear-resistant layer, a first fiber layer, a second fiber layer and a third fiber layer stacked from top to bottom. The wear-resistant layer is used for wear and scratch resistance. The first fiber layer and the third fiber layer are used to improve the strength of the coating. The second fiber layer is used to absorb impact energy.
2. The high-strength mobile phone case according to claim 1, characterized in that, The wear-resistant layer is a polyurethane coating or a nano-ceramic coating with a thickness of 0.05-0.2 mm.
3. A high-strength mobile phone case according to claim 1, characterized in that, Both the first fiber layer and the third fiber layer are made of aramid fibers.
4. A high-strength mobile phone case according to claim 1, characterized in that, The second fiber layer is made of composite glass fiber, and elastic microspheres are dispersed in the second fiber layer. The elastic microspheres are made of silicone rubber or polyurethane and have a particle size of 10-50 μm.
5. A high-strength mobile phone case according to claim 1, characterized in that, A magnet is also provided between the first fiber layer and the third fiber layer, and the second fiber layer has a through hole adapted to the shape of the magnet, and the magnet is embedded in the through hole.
6. A high-strength mobile phone case according to claim 1, characterized in that, The wear-resistant layer is bonded to the first fiber layer and to each fiber layer by a hot melt adhesive film, the hot melt adhesive film having a melting point of 80-120℃.
7. A high-strength mobile phone case according to claim 1, characterized in that, The frame is made of magnesium-aluminum alloy or polycarbonate, and its inner side has a groove structure that engages with the edge of the coating.
8. A high-strength mobile phone case according to claim 1, characterized in that, The total thickness of the coating is 0.5-1.2 mm, wherein the thickness ratio of the first fiber layer to the third fiber layer is 1:1 to 1:1.5.