Mobile phone shell material and mobile phone shell thereof

Abstract

The invention relates to the technical field of mobile phone shells. The mobile phone shell material comprises 30%-50% of polylactic acid, 10%-20% of natural plant fiber, 15%-25% of TPE bio-based elastomer, 3%-8% of plasticizer, 2%-6% of compatilizer, 1%-3% of antioxidant and 5%-10% of waterborne polyurethane. According to the mobile phone shell, the mobile phone shell is made of the degradable material, generation of plastic garbage is reduced, and long-term pollution of a traditional plastic or metal mobile phone shell to the environment is greatly reduced; through cooperative use of the mobile phone shell outer shell, the transparent cover, the auxiliary keys, the anti-skid lines, the pressing rod, the pressing air bag and the decoration groove, the user experience feeling can be improved in the use process of a user, the use comfort of the user is higher, the device practicability is higher, the frequency of replacing the mobile phone shell by the user becomes lower, and therefore the purpose of sustainable use is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of mobile phone shells; more specifically, to a mobile phone shell material and a mobile phone shell thereof. Background Art

[0002] Smartphones are the crystallization of modern technology, integrating multiple functions such as communication, entertainment, office, navigation, etc., which has greatly changed people's lifestyles. Smartphones have become an indispensable electronic device for modern people. Although smartphones are powerful, their fragile screens and bodies often require additional protection. Mobile phone cases came into being in this context and became a loyal "partner" of smartphones. Mobile phone cases not only provide all-round protection for smartphones, but also improve the user's operating convenience and personalized experience. They are one of the indispensable accessories for modern smartphones.

[0003] Existing mobile phone cases often have the following problems when in use: 1. Most mobile phone cases on the market are made of some plastic, metal and other materials, which are not environmentally friendly. After the mobile phone cases are discarded, they are easy to cause certain pollution to the environment; 2. The current mobile phone cases are updated and replaced very quickly. Ordinary mobile phone cases have simple structures and are not very practical. Users can easily replace new mobile phone cases, which is difficult to meet the current environmental protection concept of sustainable use. Therefore, a mobile phone case material and a mobile phone case are urgently needed to solve the above problems. Summary of the invention

[0004] In order to overcome the above defects of the prior art, the present invention provides a mobile phone shell material and a mobile phone shell thereof to solve the problems existing in the above background technology.

[0005] The present invention provides the following technical solution: a mobile phone shell material and a mobile phone shell thereof, comprising: 30% - 50% polylactic acid, 10% - 20% natural plant fiber, 15% - 25% TPE bio-based elastomer, 3% - 8% plasticizer, 2% - 6% compatibilizer, 1% - 3% antioxidant and 5% - 10% water-based polyurethane.

[0006] Preferably, the natural plant fibers are mixed fibers of bamboo fibers and hemp fibers. These plant fibers are like miniature "skeletons" that enhance the toughness of the mobile phone case and reduce the risk of breakage. At the same time, they can give the mobile phone case a unique feel different from traditional plastic materials, increase friction when consumers hold it, and play an anti-slip role.

[0007] Preferably, the plasticizer is a citrate plasticizer, which is highly safe and is not likely to cause health problems such as allergies and poisoning even with long-term contact. It can also improve the quality stability and appearance integrity of the mobile phone case.

[0008] Preferably, the compatibilizer is maleic anhydride grafted polylactic acid, which can allow originally incompatible materials to be evenly blended, reduce phase separation, ensure stable product performance, and enhance the mechanical properties of the mobile phone case, such as tensile strength and impact toughness.

[0009] Preferably, the antioxidant is a hindered phenol antioxidant, which has good antioxidant effect and can maintain the appearance and mechanical properties of the mobile phone case for a long time.

[0010] Preferably, the mobile phone case includes a mobile phone case shell, a camera hole is provided at the upper end of the mobile phone case shell, a decorative groove is provided at the lower end of the mobile phone case shell, a transparent cover is hinged on the back side of the lower end of the mobile phone case shell at a position corresponding to the decorative groove, and the other side of the transparent cover is connected to the mobile phone case shell by an elastic buckle, arc grooves are provided on both sides of the mobile phone case shell, and anti-slip patterns are provided on the inner wall of the arc groove, a decorative groove is provided on the upper end of one side of the mobile phone case shell, a press airbag is fixed at the upper end of one side of the mobile phone case shell at a position corresponding to the decorative groove, and an auxiliary button is fixed on one side of the press airbag, and a press rod is fixed on one side of the auxiliary button, which increases the comfort and practicality of the mobile phone case, reduces the frequency of users replacing mobile phone cases, and helps to achieve the purpose of sustainable use.

[0011] Preferably, an inner cavity fitting the shape of the mobile phone is opened on the front side of the mobile phone shell for accommodating and protecting the mobile phone.

[0012] Preferably, the top and bottom ends of the mobile phone case are provided with multiple groups of through grooves, and the shapes and sizes of the multiple groups of through grooves correspond to the charging hole, speaker hole, microphone hole, and headphone hole of the mobile phone. The through grooves are used to maintain the normal use state of the functions of the mobile phone itself to prevent the various holes of the mobile phone from being blocked, making most commonly used functions difficult or even impossible to use.

[0013] Preferably, the number of the auxiliary buttons and press airbags is consistent with the number of button holes, one side of the press airbag is fixed to one side of the outer wall of the mobile phone shell, and the button hole corresponds to the volume adjustment button and the power button of the mobile phone, so that the volume adjustment function and the power on / off function of the mobile phone can be used normally to meet the normal mobile phone usage status.

[0014] Preferably, the pressing rods are provided with multiple groups, each group of the pressing rods corresponds to the volume up button, volume down button and power button of the mobile phone, one end of the pressing rod is set as a spherical body made of soft silicone material, and the deviation value between the top of the spherical body and the inner wall of the mobile phone shell is smaller than the thickness value of the pressing airbag, when pressing the auxiliary button, the volume adjustment button and the power button of the mobile phone itself can be pressed with the help of the pressing rod, which makes the user more labor-saving when pressing the buttons, and when the auxiliary button is not under force, a certain gap is left between the pressing rod and the mobile phone button, which can also reduce unnecessary interference of the pressing rod on the mobile phone button.

[0015] Technical effects and advantages of the present invention: The present invention helps to reduce the generation of plastic waste by using a mobile phone shell made of degradable materials, greatly reducing the long-term pollution of the environment by traditional plastic or metal mobile phone shells. It is a better choice for consumers who pursue an environmentally friendly lifestyle, and is also an effective way to protect the environment and reduce plastic pollution. It not only meets the user's demand for mobile phone shells, but also reflects a sense of responsibility for the earth; Through the coordinated use of the mobile phone case, transparent cover, auxiliary buttons, anti-skid patterns, pressing rods, pressing airbags and decorative grooves, the user experience can be enhanced during use, especially when holding the mobile phone case, the anti-skid patterns can increase the friction between the user's fingers and the device, thereby reducing the risk of the mobile phone slipping. While protecting the volume adjustment button and the power button of the mobile phone, it can also assist the user to complete the button operation more easily, making the user more comfortable to use and the device more practical. At the same time, the user can put his favorite pictures in the decorative groove to achieve the purpose of DIY mobile phone case, which can enhance the fun and aesthetics of the use of the device and reduce the frequency of users changing mobile phone cases, thereby achieving the purpose of sustainable use, which is in line with the current social concept of environmental protection and sustainable development. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the front three-dimensional structure of the present invention.

[0017] Figure 2 It is a side view stereoscopic structural schematic diagram of the present invention.

[0018] Figure 3 For the present invention Figure 1 Schematic diagram of the enlarged three-dimensional structure of A in the middle.

[0019] Figure 4 It is a partial cross-sectional three-dimensional structural schematic diagram of the present invention.

[0020] Figure 5 Partial cross-sectional schematic diagram of the three-dimensional structure of the present invention. Figure 6 It is a rear-view stereoscopic structural schematic diagram of the present invention.

[0021] The accompanying drawings are marked as follows: 1. mobile phone shell; 2. camera hole; 3. transparent cover; 4. auxiliary button; 5. anti-slip pattern; 6. button hole; 7. pressing rod; 8. pressing airbag; 9. decorative groove. DETAILED DESCRIPTION

[0022] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the present invention. In addition, the forms of the various structures recorded in the following embodiments are merely illustrative, and the instrument placement rack involved in the present invention is not limited to the various structures recorded in the following embodiments. All other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the present invention.

[0023] like Figures 1 to 6 As shown, the present invention proposes a mobile phone shell material and a mobile phone shell thereof, comprising 30%-50% polylactic acid, 10%-20% natural plant fiber, 15%-25% TPE bio-based elastomer, 3%-8% plasticizer, 2%-6% compatibilizer, 1%-3% antioxidant and 5%-10% water-based polyurethane, the bio-based content in the TPE bio-based elastomer is more than 30%, which can effectively improve the flexibility of the material and enhance the protective effect on the mobile phone, the solid content of the water-based polyurethane emulsion is about 40%, and the water-based polyurethane can be evenly coated on the surface of the injection-molded mobile phone shell by external spraying equipment, and the coating thickness is about 0.1-0.3mm, which is used to form a protective outer coating; The natural plant fiber is a mixed fiber of bamboo fiber and hemp fiber. The bamboo fiber and hemp fiber are mixed in a mass ratio of 1:1. The bamboo fiber is made of high-quality bamboo material with a length of about 2-4 mm. Both should be screened to remove impurities.

[0024] The plasticizer is a citrate plasticizer, using triethyl citrate with a purity of 99%, which is used to optimize the material processing fluidity, making the final molded product more uniform and softer, and meeting diverse modeling requirements.

[0025] The compatibilizer is maleic anhydride grafted polylactic acid, which can promote the fusion of various components.

[0026] The antioxidant is a hindered phenol antioxidant, which prevents the material from oxidative aging.

[0027] The mobile phone case includes a mobile phone case shell 1, a camera hole 2 is provided at the upper end of the mobile phone case shell 1, a decorative groove 9 is provided at the lower end of the mobile phone case shell 1, a transparent cover 3 is hinged at a position corresponding to the decorative groove 9 on the back of the lower end of the mobile phone case shell 1, and the other side of the transparent cover 3 is connected to the mobile phone case shell 1 by an elastic buckle, arc grooves are provided on both sides of the mobile phone case shell 1, and the inner wall of the arc groove is provided with anti-slip grooves 5, a decorative groove 9 is provided on the upper end of one side of the mobile phone case shell 1, a pressing airbag 8 is fixed at the upper end of one side of the mobile phone case shell 1 corresponding to the decorative groove 9, and an auxiliary button 4 is fixed on one side of the pressing airbag 8, and a pressing rod 7 is fixed on one side of the auxiliary button 4, and the decorative groove 9 is located near the inner side of the mobile phone case shell 1 One end is set as a small rectangular groove, and the decorative groove 9 is set as a large rectangular groove at one end close to the outer side of the mobile phone case shell 1. The surface area of ​​the transparent cover 3 is consistent with the surface area of ​​the large rectangular groove at one end of the decorative groove 9. The transparent cover 3 is made of polylactic acid PLA material, which has good biocompatibility and processability, and has high transparency, which makes it easy to see the picture information covered by the transparent cover 3, thereby increasing the interest and aesthetics of the device. At the same time, the polylactic acid PLA material is also degradable. There are multiple groups of arc grooves, and the multiple groups of arc grooves are equidistant and symmetrically distributed on both sides of the mobile phone case shell 1 in a linear array, so that when the user's fingers are placed at different positions, there is friction between the mobile phone case, thereby reducing the risk of the mobile phone falling due to slipping.

[0028] The front of the mobile phone shell 1 is provided with an inner cavity that fits the shape of the mobile phone for accommodating and protecting the mobile phone. The size of the cavity is manufactured according to mobile phones of different sizes and models to ensure the tightness between the mobile phone and the cavity.

[0029] The top and bottom of the mobile phone case shell 1 are provided with multiple groups of through grooves, and the shapes and sizes of the multiple groups of through grooves correspond to the charging hole, speaker hole, microphone hole, and headphone hole of the mobile phone. The through grooves are used to maintain the normal use state of the functions of the mobile phone itself. The specific position and size of the through grooves are adapted to the position and size of each hole of the mobile phone, and the size of the through grooves is larger than the size of the hole of the mobile phone.

[0030] The number of auxiliary buttons 4 and pressing airbags 8 is consistent with the number of button holes 6. One side of the pressing airbag 8 is fixed to one side of the outer wall of the mobile phone shell 1. The button hole 6 corresponds to the volume adjustment button and the power button of the mobile phone, so that the volume adjustment function and the power on / off function of the mobile phone can be used normally. The pressing airbag 8 is made of polyhydroxyalkanoate material, which has good resilience and rapid degradation characteristics. It can keep the pressing rod 7 separated from the mobile phone shell 1 when the auxiliary button 4 is not squeezed by external force.

[0031] There are multiple groups of pressing rods 7, each group of pressing rods 7 corresponds to the volume up button, volume down button and power button of the mobile phone. One end of the pressing rod 7 is set to a spherical body made of soft silicone material, and the deviation value between the top of the spherical body and the inner wall of the mobile phone shell 1 is less than the thickness value of the pressing airbag 8. The deviation between the top of the spherical body and the inner wall of the mobile phone shell 1 can prevent the pressing rod 7 from contacting the mobile phone button when the user does not press the auxiliary button 4, thereby reducing the probability of accidental touch.

[0032] Working principle: when using a mobile phone case, first put the mobile phone into the mobile phone case shell 1, align the mobile phone camera part with the camera hole 2, the user can hold the mobile phone case shell 1 with his hand, put his fingers in the arc groove, and there is friction between the fingers and the anti-slip pattern 5, which can reduce the risk of the device falling. When it is necessary to press the power button and the volume adjustment button, the auxiliary button 4 at the corresponding position can be directly pressed to squeeze the pressing airbag 8. At the same time, the auxiliary button 4 drives one end of the pressing rod 7 to pass through the key hole 6 to squeeze the mobile phone keys, thereby achieving the purpose of the auxiliary button, making the key operation more labor-saving and convenient. At the same time, the mobile phone keys will not be easily exposed to cause unnecessary damage. After releasing the auxiliary button 4, the auxiliary button 4 can be pushed away from the mobile phone case shell 1 under the rebound of the pressing airbag 8, and the pressing rod 7 is also away from the mobile phone keys. Finally, the user can cut his favorite pictures and put them into the decorative groove 9, and then rotate the transparent cover 3 to block the decorative groove 9 until one end of the transparent cover 3 is engaged with the mobile phone case shell 1. The above is the entire working principle of the present invention.

[0033] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change; Secondly: In the drawings of the embodiments disclosed in the present invention, only the structures related to the embodiments disclosed in the present invention are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present invention can be combined with each other; Finally: The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A mobile phone shell material, characterized in that: The components include the following mass percentages: Polylactic acid 30% - 50%, natural plant fiber 10% - 20%, TPE bio-based elastomer 15% - 25%, plasticizer 3% -8%, compatibilizer 2% - 6%, antioxidant 1% - 3% and water-based polyurethane 5% - 10%.

2. A mobile phone shell material according to claim 1, characterized in that: The natural plant fiber is a mixed fiber of bamboo fiber and hemp fiber.

3. A mobile phone shell material according to claim 1, characterized in that: The plasticizer is a citrate plasticizer.

4. A mobile phone shell material according to claim 1, characterized in that: The compatibilizer is maleic anhydride grafted polylactic acid.

5. A mobile phone shell material according to claim 1, characterized in that: The antioxidant is a hindered phenol antioxidant.

6. A mobile phone case, characterized in that: A mobile phone shell material as claimed in any one of claims 1 to 5 is used, wherein the mobile phone shell comprises a mobile phone shell shell (1), a camera hole (2) is provided at the upper end of the mobile phone shell shell (1), a decorative groove (9) is provided at the lower end of the mobile phone shell shell (1), a transparent cover (3) is hingedly connected to the back of the lower end of the mobile phone shell shell (1) at a position corresponding to the decorative groove (9), and the other side of the transparent cover (3) is connected to the mobile phone shell shell (1) by an elastic buckle, arc grooves are provided on both sides of the mobile phone shell shell (1), and anti-slip grooves (5) are provided on the inner wall of the arc groove, a decorative groove (9) is provided at the upper end of one side of the mobile phone shell shell (1), a pressing airbag (8) is fixed at the upper end of one side of the mobile phone shell shell (1) corresponding to the decorative groove (9), an auxiliary button (4) is fixed on one side of the pressing airbag (8), and a pressing rod (7) is fixed on one side of the auxiliary button (4).

7. A mobile phone shell material according to claim 6, characterized in that: The front side of the mobile phone shell (1) is provided with an inner cavity that fits the shape of the mobile phone and is used to accommodate and protect the mobile phone.

8. The mobile phone shell material according to claim 6, characterized in that: The top and bottom ends of the mobile phone shell (1) are provided with a plurality of through grooves, and the shapes and sizes of the plurality of through grooves correspond to the charging hole, speaker hole, microphone hole, and headphone hole of the mobile phone, and the through grooves are used to maintain the normal use state of the functions of the mobile phone itself.

9. A mobile phone shell material according to claim 6, characterized in that: The number of the auxiliary buttons (4) and the push airbags (8) is consistent with the number of the button holes (6); one side of the push airbag (8) is fixed to one side of the outer wall of the mobile phone shell (1); and the button holes (6) correspond to the volume adjustment button and the power button of the mobile phone, so that the volume adjustment function and the power on / off function of the mobile phone can be used normally.

10. The mobile phone shell material according to claim 6, characterized in that: The pressing rods (7) are provided in a plurality of groups, each group of the pressing rods (7) corresponding to a volume up key, a volume down key and a power key of the mobile phone, one end of the pressing rods (7) being provided as a spherical body made of soft silicone material, and a deviation value between the top of the spherical body and one side of the inner wall of the mobile phone shell (1) is less than a thickness value of the pressing airbag (8).

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