Mobile phone shell with complete air bag

Abstract

The invention provides a mobile phone protection shell integrating an outer layer bottom plate and a full-wrapping air bag lining, and aims to provide a more comprehensive, safe and attractive mobile phone protection scheme for a user. The outer layer bottom plate of the mobile phone shell can be made of a high-transparency acrylic plate, so that the mobile phone shell has excellent scratch resistance and high transparency; and certain impact resistance is provided while the attractiveness of the mobile phone is kept. A full-wrapping air bag lining is designed in the shell, is made of high-elasticity and compression-resistant TPU or EVA foam materials and is firmly combined to the inner side of the shell through the high-frequency bonding technology, seamless connection is formed, and it is ensured that a mobile phone is wrapped in all directions. When the mobile phone shell falls off, the full-wrapping air bag lining can rapidly deform and absorb impact energy, damage to a mobile phone is effectively reduced, and perfect combination of high-strength protection and good buffering performance is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of mobile communication equipment accessories, in particular to a mobile phone protective shell integrating an outer bottom plate and a fully wrapped airbag lining, aiming to provide users with a more comprehensive, safe and beautiful mobile phone protection solution. Background Art

[0002] With the rapid development of smartphone technology, mobile phones have become an indispensable part of people's daily lives. However, due to the high value of mobile phones and users' high dependence on the appearance and performance of mobile phones, the demand for mobile phone protective cases is increasing. Traditional mobile phone cases are usually made of materials such as silicone, plastic or metal. Although these materials can protect mobile phones from minor scratches and drops to a certain extent, their protective effect is often limited when facing high-intensity impacts. Especially when the mobile phone falls, because the impact force is concentrated on the corners of the mobile phone, traditional mobile phone cases often cannot provide comprehensive protection.

[0003] In addition, although there are some mobile phone cases with airbag designs on the market, most of these designs have problems such as scattered airbag layout, large airbag gaps, and loose connections, which greatly reduce the cushioning effect of the airbag when impacted and fail to form an overall protective effect. Therefore, how to design a mobile phone case that can effectively resist scratches and wear and provide comprehensive cushioning protection when falling has become an urgent problem to be solved in the current field of mobile communication equipment accessories technology. Summary of the invention

[0004] In order to solve the above problems, the present invention proposes a mobile phone protective case with an integrated outer bottom plate and a fully wrapped airbag lining. The mobile phone case achieves a perfect combination of high-strength protection and good buffering performance through a unique structural design.

[0005] The mobile phone case of the present invention has an outer bottom plate, which can be made of high-quality high-transparency acrylic sheet. The acrylic sheet has excellent scratch resistance and can resist minor scratches and wear in daily use; at the same time, its high transparency maintains the original beauty of the mobile phone, so that the user can appreciate the exquisite appearance of the mobile phone without removing the mobile phone case. In addition, the acrylic sheet also has a certain impact resistance and can resist external impact to a certain extent.

[0006] In order to solve the problem that the traditional mobile phone case has poor protection effect when falling, the present invention designs a complete airbag lining on the inner side of the mobile phone case, which can cover the back plate and the surrounding side plates. The airbag lining is made of highly elastic and compression-resistant materials, such as TPU (thermoplastic polyurethane) or EVA (ethylene-vinyl acetate copolymer) foam. These materials have excellent cushioning properties and can quickly deform and absorb impact energy when the mobile phone falls, effectively reducing the damage to the mobile phone.

[0007] Using high-frequency bonding technology, this method can quickly and effectively firmly bond different materials (such as acrylic and airbag materials). Bonding occurs at the edges of the side panels around the phone case shell and the edges of the back panel of the phone case. These locations are key parts of the phone case structure and are most vulnerable to external impact and extrusion. By bonding at these locations, the connection strength between the shell and the lining can be ensured, thereby improving the overall protection performance of the phone case. During the high-frequency bonding process, due to the effects of heat and pressure, a sealed bonding area is formed, and an air layer is formed in the area. The airbag lining fits tightly with the phone case shell to form a seamless connection, ensuring that there are no dead corners inside the entire phone case and the phone is wrapped in all directions.

[0008] When the phone case falls with the phone, the fully wrapped airbag lining will first contact the ground or other impact objects. Since the airbag lining is made of highly elastic, compression-resistant materials (such as TPU or EVA foam), it can quickly deform and absorb a large amount of impact energy at the moment of impact. Since the phone is fully covered, in addition to the four corners, the back panel can also provide sufficient protection. No matter how the phone falls to the ground, it can effectively eliminate the impact and protect the phone's safety.

[0009] Beneficial Effects

[0010] 1. Comprehensive protection: By designing a fully wrapped airbag lining that covers the back panel and surrounding side panels of the phone, the phone is fully wrapped, effectively solving the problem of poor protection of traditional mobile phone cases when falling, especially the protection of the corners and back panel of the phone is more significant.

[0011] 2. Stable structure: High-frequency bonding technology is used to firmly bond the outer bottom plate to the airbag lining, especially at the edges of the side panels around the shell of the mobile phone case and the edges of the quadrilateral shape in the middle of the back panel, ensuring the connection strength between the shell and the lining, and improving the overall protection performance and durability of the mobile phone case.

[0012] 3. Seamless connection: The sealed bonding area formed by high-frequency bonding makes the airbag lining fit tightly with the mobile phone case shell to form a seamless connection, avoiding the problems of scattered airbag layout, large gaps, and loose connections in traditional designs, ensuring that there are no dead angles inside the mobile phone case and the mobile phone is wrapped in all directions. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The present invention is further described below in conjunction with the accompanying drawings and embodiments:

[0014] Figure 1 This is a schematic diagram of the mobile phone case from the first angle;

[0015] Figure 2 This is a schematic diagram of the mobile phone case from the second angle;

[0016] Figure 3 This is the exploded diagram of the mobile phone case structure;

[0017] Figure 4 This is a schematic diagram of the planed surface of a mobile phone case.

[0018] Description of reference numerals:

[0019] 100, mobile phone case; 110, airbag lining; 120, outer bottom plate; 130, hole position; 210, air layer; 310, bonding position. DETAILED DESCRIPTION

[0020] The present invention provides a technical solution, which has an outer bottom plate 120 and an airbag lining 110. The airbag lining 110 can cover the surrounding side panels and the inner surface of the back panel of the outer bottom plate 120. The acrylic outer bottom plate and the airbag are provided with buttons, sound and charging holes 130, etc., which are adjusted according to the corresponding mobile phone model.

[0021] The outer bottom plate 120 structure uses high-quality transparent acrylic sheet as the outer bottom plate material of the mobile phone case. The sheet must have good impact resistance and scratch resistance. The selected acrylic sheet is precisely cut to ensure that the contour of the mobile phone case is completely matched with the target mobile phone model, and the thickness of the surrounding side panels should exceed the thickness of the target mobile phone to achieve full protection. Subsequently, the cut acrylic shell is polished through multiple processes, including rough polishing, fine polishing and mirror polishing, to achieve a smooth surface like a mirror and no scratches.

[0022] Highly elastic and compression-resistant TPU (thermoplastic polyurethane) foam is selected as the material of the airbag lining 110. The material needs to have good resilience to ensure that it can quickly return to its original shape after being impacted.

[0023] Based on the 3D model of the target mobile phone, a special mold for the airbag liner is designed and manufactured. The mold needs to accurately replicate every curved surface and corner of the mobile phone to ensure that the airbag liner can fit the contour of the mobile phone tightly.

[0024] The TPU foam material is placed in the mold and formed into an airbag lining that matches the shape of the mobile phone through a hot pressing process. The bonding position 310 is on the side panels around the acrylic outer bottom plate and the edge of the quadrilateral shape in the middle of the back plate. After molding, the airbag lining is precisely cut using a laser cutting machine to remove the excess parts to ensure its perfect combination with the acrylic shell.

[0025] Before the acrylic outer bottom plate and the airbag liner are bonded, apply an appropriate amount of high-frequency special adhesive to the connection area of ​​the back plate (part of the acrylic shell, usually the back of the mobile phone case) and the airbag liner to enhance the connection strength. At the same time, ensure that the connection area is clean, free of oil and impurities. Place the back plate and the airbag liner between the upper and lower molds of the high-frequency welding machine, and adjust the mold position to align the connection area. Start the welding machine, and the high-frequency electromagnetic wave acts on the material surface of the connection area through the mold, causing it to be locally heated and quickly melted or softened. Under the action of pressure, the molten materials penetrate each other and are tightly combined to form a strong connection. Due to the action of heating and pressure, a sealed bonding area is formed, and an air layer 210 is formed in the area. After the connection is completed, let the mobile phone case cool naturally to room temperature. Then, the connection strength test is carried out, including a pull test, a twist test, etc., to ensure that the connection between the back plate and the airbag liner is stable and reliable. The back plate and the airbag liner that have been treated with high-frequency discharge connection are combined to form a complete mobile phone case structure. Ensure that the airbag fits tightly with the acrylic outer bottom plate.

[0026] When in use, no matter at what angle it falls, since the phone case is fully covered by the airbag, it can effectively dissipate the impact and form effective protection.

[0027] The above embodiments are preferred implementation modes of the present invention, but the implementation modes of the present invention are not limited to the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principles of the present invention should be equivalent replacement methods and are included in the protection scope of the present invention.

Claims

1. A mobile phone case with a complete airbag, comprising an outer bottom plate and an airbag lining, wherein the outer bottom plate has a back plate and surrounding side plates, characterized in that: The airbag lining is a whole material, which is arranged inside the outer bottom plate and fully covers the back plate and the surrounding side plates.

2. The mobile phone case with a complete airbag according to claim 1, characterized in that: The outer bottom plate is bonded to the airbag lining, and the bonding positions are at the edges of the side plates around the outer bottom plate and the edges of the back plate of the mobile phone case.

3. The mobile phone case with a complete airbag according to claim 2, characterized in that: The outer bottom plate is made of polymethyl methacrylate material.

4. The mobile phone case with a complete airbag according to claim 2, characterized in that: The airbag is made of thermoplastic polyurethane material.

5. The mobile phone case with a complete air bag according to claim 2, characterized in that: The airbag is made of ethylene-vinyl acetate copolymer material.

6. The mobile phone case with a complete airbag according to any one of claims 3 to 5, characterized in that: The outer bottom plate and the airbag lining are connected by high-frequency hot melting.

7. The mobile phone case with a complete air bag according to claim 1, characterized in that: The outer bottom plate and the air bag are provided with buttons, sounds and connection holes.

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