Flexible chain mobile phone shell

By connecting the skeleton with a flexible chain structure and combining it with the soft rubber part and the base plate, the problem of balancing protective performance and user experience caused by the single material of existing mobile phone cases is solved. This allows for multi-angle bending deformation and diversified design, improving the protective performance and personalized appearance of the mobile phone case.

CN223928359UActive Publication Date: 2026-02-17DONGGUAN CHENGCHUN PLASTIC CO LTD
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Patent Information

Application Number
CN202520627506.9
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-04-03
Publication Date
2026-02-17
Estimated Expiration
2035-04-03

AI Technical Summary

Technical Problem

Existing phone cases use a single material and have a rigid connection structure, making it difficult to balance protection performance with user experience, resulting in issues such as breakage, loosening, and functionality.

Method used

The flexible chain structure connects adjacent skeletons with chains, combined with soft rubber parts and base plates, to achieve diverse material selection and flexible deformation, enhancing protective performance and personalized appearance.

Benefits of technology

It enables multi-angle bending and deformation of the phone case, enhancing protection and user experience, providing diverse material choices and appearance designs, and improving the functionality and aesthetics of the product.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of mobile phone shell design, in particular to a flexible chain mobile phone shell, which is technically characterized in that the flexible chain mobile phone shell comprises a bottom plate, framework layers, a chain and a soft rubber part, the bottom plate is positioned on at least one of the inner side and the outer side of the framework layers, and the framework layers are arranged in an array along the length direction of the mobile phone shell; the bottom plate and the soft rubber parts are connected through chains, the soft rubber parts are located at the upper end and the lower end of the bottom plate, the skeleton layer comprises a plurality of skeletons, the skeletons are arranged in an array mode in the length direction of the bottom plate, the two ends of each skeleton in the length direction are each provided with an abutting side edge, and a chain is arranged between every two adjacent abutting side edges. And the adjacent frameworks are connected through the chains. The adjacent frameworks are connected through the chains, so that each section of chain can be bent and deformed at any angle after being connected, the base plate can be made of different materials due to the additional arrangement of the base plate, and not only is the diversified choices of a user increased, but also the appearance of the product is improved.
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Description

Technical Field

[0001] This utility model relates to the field of mobile phone case design technology, specifically to a flexible chain mobile phone case. Background Technology

[0002] With the widespread use of mobile devices, phone cases, as an important protective accessory, not only ensure device safety but also increasingly meet users' demands for personalized appearance and diverse functions. Traditional phone cases are mostly made of hard plastic, silicone, or a single piece of leather, molded in one piece. While this design provides basic protection, it has significant drawbacks: First, rigid materials lack the ability to deform, and are prone to breakage due to stress concentration during accidental drops or compression, leading to protective failure; second, although soft materials can cushion impacts through deformation, they are prone to loosening and deformation after long-term use, making it difficult to maintain a tight cover for the phone's edges and side buttons, reducing the reliability of protection.

[0003] Furthermore, existing foldable or segmented phone cases typically rely on hinges or snap-fit ​​structures to enhance flexibility and achieve partial movement. However, such mechanical connection components have inherent drawbacks: hinges require precision machining to match the rotation trajectory of multiple frame segments, resulting in high production costs; snap-fit ​​connections rely on the physical interlocking of protrusions and grooves, which are prone to loosening or even breakage due to wear after repeated bending. For example, while a design using a rigid metal frame with a hinge can enhance overall drop resistance, the lack of an elastic buffer layer at the contact surface between the frame and the phone can cause discomfort during prolonged use; while a fully soft rubber material can improve tactile comfort through overall wrapping, its softness makes it difficult to secure the position of precision components such as cameras and side buttons, easily leading to misalignment and obstruction that affects functionality. These contradictions highlight the limitations of single materials and rigid connection structures in terms of functional expandability. Utility Model Content

[0004] Therefore, the purpose of this application is to solve the problems in the prior art, such as the difficulty in balancing protective performance and user experience, and the homogenization of appearance due to the limited selection of materials.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0006] A flexible chain phone case includes a base plate, a skeleton layer, a chain, and a soft rubber portion. The base plate is located on at least one of the inner and outer sides of the skeleton layer. The skeleton layer is arranged in an array along the length direction of the phone case and connected by the chain. The soft rubber portion is located at the upper and lower ends of the base plate. The skeleton layer includes a plurality of skeletons, which are arranged in an array along the length direction of the base plate. Each end of the skeleton along the length direction has a supporting side, and a chain is provided between each adjacent supporting side to connect adjacent skeletons.

[0007] Preferably, the supporting side is elliptical, and two limiting holes are provided on the supporting side. The line connecting the limiting holes extends along the length direction of the base plate. The chain includes a connecting rod and a limiting part. The two ends of the connecting rod in the length direction are respectively located on two adjacent supporting sides. Each connecting rod has two limiting parts, and the two limiting parts are respectively provided with corresponding limiting holes on the two adjacent supporting sides. The limiting parts are rotatably disposed in the limiting holes.

[0008] Preferably, the cross-section of the limiting part is arranged in the shape of an "I", and the limiting part is embedded in the limiting hole.

[0009] Preferably, three soft rubber parts are provided, two of which are located at both ends of the base plate along its length to protect the top and bottom surfaces of the phone. Each soft rubber part includes a bottom side edge and a ring side edge. The bottom side edge is coplanar with the skeleton layer, and the ring side edge is located on the outer periphery of the bottom side edge to protect the edge of the phone. The remaining soft rubber part is a side soft rubber part, and a button hole is provided on the side soft rubber part for corresponding to the buttons on the phone.

[0010] Preferably, the ring sides of the soft rubber parts on both the upper and lower sides are U-shaped, and anti-fall protrusions are provided on the outer side of the corners of the ring sides, and airbags are provided on the inner side of the corners of the ring sides.

[0011] Preferably, the bottom of the side soft rubber part is connected to the skeleton, and fixing holes are respectively provided at both ends of the side soft rubber part along its length. The fixing holes have the same function as the limiting holes and are used to connect with the chain.

[0012] Preferably, the base plate is generally rectangular, and a clearance hole is provided on the base plate for making way for the camera on the mobile phone.

[0013] Preferably, an L-shaped limiting plate is provided on the side of the supporting side away from the frame. The limiting plate is used to limit the position of the top surface of the mobile phone. The vertical side of the limiting plate is coplanar with the supporting side. The horizontal direction of the limiting plate is located on the side of the vertical side of the limiting plate away from the supporting side and is parallel to the plane of the bottom plate.

[0014] Compared with the prior art, this application has the following beneficial effects:

[0015] The adjacent frames are connected by chains, allowing each chain segment to be bent and deformed at any angle after connection. The additional base plate allows for the use of different materials (velvet, microfiber, PU, ​​TPU, silicone, genuine leather, etc.), increasing user choice and enhancing the product's appearance. This product can also be combined with magnetic attachments, stands, and other accessories to achieve greater versatility in phone case design. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of a flexible chain mobile phone case according to the present invention;

[0017] Figure 2 This is a schematic diagram showing the disassembly of a flexible chain phone case according to the present invention;

[0018] Figure 3 This is a split view of the flexible chain phone case of this utility model from another angle.

[0019] In the diagram, 1 is the base plate; 11 is the clearance hole; 2 is the skeleton layer; 21 is the skeleton; 22 is the supporting side; 221 is the limiting hole; 23 is the limiting plate; 24 is the clearance part; 3 is the chain; 31 is the connecting rod; 32 is the limiting part; 4 is the soft rubber part; 41 is the side soft rubber part; 411 is the button hole; 412 is the fixing hole; 42 is the bottom side; 421 is the camera hole; 43 is the ring side; 431 is the anti-fall protrusion; 432 is the airbag; and 433 is the through hole. Detailed Implementation

[0020] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0021] Please see Figure 1 and Figure 2 A flexible chain phone case includes a base plate 1, a skeleton layer 2, a chain 3, and a soft rubber part 4. The base plate 1 is located on at least one of the inner and outer sides of the skeleton layer 2. The skeleton layer 2 is arranged in an array along the length direction of the phone case and connected by the chain 3. The soft rubber part 4 is located at the upper and lower ends of the base plate 1 and is used to realize the drop protection of the phone case.

[0022] In one implementation, please refer to Figure 2 and Figure 3 The base plate 1 is generally rectangular in shape, and a clearance hole 11 is provided on the base plate 1 for making way for the camera on the mobile phone. Please refer to [link / reference]. Figure 2 and Figure 3The base plate 1 is provided once and is located on the outer side of the frame layer 2. The base plate 1 is made of leather. In another embodiment, the base plate 1 can also be provided on the inner wall of the frame layer 2 for mutual support with the mobile phone to protect the mobile phone.

[0023] In other embodiments, the base plate 1 may be provided as two, with the two base plates 1 located on the inner and outer sides of the skeleton layer 2 respectively. The base plate 1 may also be made of other materials such as velvet, microfiber, PU, ​​TPU, silicone, or genuine leather.

[0024] The skeleton layer 2 includes a plurality of skeletons 21, which are arranged in an array along the length direction of the base plate 1. The skeletons 21 are elongated and their length direction is perpendicular to the length direction of the base plate 1. Each end of the skeleton 21 has a supporting side 22 for supporting the side of the mobile phone. In one embodiment, the supporting side 22 is elliptical and has two limiting holes 221. The line connecting the limiting holes 221 extends along the length direction of the base plate 1. An L-shaped limiting plate 23 is provided on the side of the supporting side 22 away from the skeleton 21. The limiting plate 23 is used to limit the position of the top surface of the mobile phone. The vertical side of the limiting plate 23 is coplanar with the supporting side 22. The horizontal direction of the limiting plate 23 is located on the side of the limiting plate 23 away from the supporting side 22 and is parallel to the plane of the base plate 1.

[0025] Please see Figure 2 and Figure 3 A chain 3 is provided between each of the two adjacent abutting sides 22 to connect the adjacent skeletons 21. In one embodiment, the chain 3 includes a connecting rod 31 and a limiting part 32. The two ends of the connecting rod 31 in the length direction are respectively located on the two adjacent abutting sides 22. Each connecting rod 31 has two limiting parts 32. The two limiting parts 32 are respectively provided with corresponding limiting holes 221 on the two adjacent abutting sides 22. The limiting part 32 is rotatably disposed in the limiting hole 221. In one embodiment, the cross-section of the limiting part 32 is "I" shaped to be embedded in the limiting hole 221 to prevent it from falling out.

[0026] Three soft rubber parts 4 are provided, two of which are located at both ends of the base plate 1 along its length, for protecting the upper and lower end faces of the phone. Each soft rubber part 4 includes a bottom side edge 42 and a ring side edge 43. The bottom side edge 42 is coplanar with the skeleton layer 2, and the ring side edge 43 is located on the outer periphery of the bottom side edge 42 for protecting the edge of the phone. In one embodiment, the ring side edges 43 of the soft rubber parts 4 on both the upper and lower sides are U-shaped, and anti-drop protrusions 431 are provided on the outer side of the corner of the ring side edge 43, and airbags 432 are provided on the inner side of the corner of the ring side edge 43.

[0027] In one embodiment, a camera hole 421 is provided on the bottom side 42 of the upper soft rubber part 4, and a clearance part 24 is provided on the skeleton layer 2 to accommodate the camera hole 421. A through hole 433 is provided on the annular side 43 of the lower soft rubber part 4 to accommodate holes such as volume holes and charging holes.

[0028] Please see Figure 2 and Figure 3 Furthermore, a soft rubber portion 4 is disposed on the side of the skeleton layer 2. This side soft rubber portion 4 is a side soft rubber portion 414, which is provided with a button hole 411 for corresponding to the buttons on a mobile phone. The bottom of the side soft rubber portion 414 is connected to the skeleton 21, and fixing holes 412 are respectively provided at both ends of the side soft rubber portion 414 along its length. The fixing holes 412 function the same as the limiting hole 221 for connecting to the chain 3.

[0029] This application provides a flexible chain phone case that connects adjacent frame segments 21 via chains 3, allowing each chain segment 3 to be bent and deformed at any angle after connection. The additional base plate 1 allows it to be made of different materials (velvet, microfiber, PU, ​​TPU, silicone, genuine leather, etc.), increasing user choice and enhancing the product's appearance. This product can also be combined with magnetic attachments, stands, and other accessories to further enhance the versatility of the phone case.

Claims

1. A flexible chain phone case, characterized by: The device includes a base plate, a frame layer, a chain, and a soft rubber part. The base plate is located on at least one of the inner and outer sides of the frame layer. The frame layer is arranged in an array along the length direction of the phone case and is connected by the chain. The soft rubber part is located at the upper and lower ends of the base plate. The frame layer includes a plurality of frames, which are arranged in an array along the length direction of the base plate. Each end of the frame has a supporting side, and a chain is provided between each adjacent supporting side to connect adjacent frames.

2. The flexible chain phone case of claim 1, wherein: The supporting side is elliptical and has two limiting holes. The line connecting the limiting holes extends along the length of the base plate. The chain includes a connecting rod and a limiting part. The two ends of the connecting rod are located on two adjacent supporting sides. Each connecting rod has two limiting parts, which correspond to the limiting holes on the two adjacent supporting sides. The limiting parts are rotatably disposed within the limiting holes.

3. A flexible chain phone case according to claim 2, characterized in that: The cross-section of the limiting part is arranged in the shape of an "I" and the limiting part is embedded in the limiting hole.

4. A flexible chain phone case according to claim 3, characterized in that: The soft rubber part is provided in three parts. Two of the soft rubber parts are located at both ends of the base plate along its length and are used to protect the top and bottom ends of the phone. Each soft rubber part includes a bottom side edge and a ring side edge. The bottom side edge is coplanar with the skeleton layer, and the ring side edge is located on the outer periphery of the bottom side edge and is used to protect the edge of the phone. The remaining soft rubber part is a side soft rubber part, and a button hole is provided on the side soft rubber part. The button hole is used to correspond to the button on the phone.

5. A flexible chain phone case according to claim 4, characterized in that: Both the upper and lower sides of the soft rubber part are U-shaped, and the outer side of the corner of the ring side is provided with anti-fall protrusion, and the inner side of the corner of the ring side is provided with an airbag.

6. A flexible chain phone case according to claim 5, characterized in that: The bottom of the side soft rubber part is connected to the skeleton, and fixing holes are respectively provided at both ends of the side soft rubber part along its length. The fixing holes have the same function as the limiting holes and are used to connect with the chain.

7. A flexible chain phone case according to claim 6, characterized in that: The base plate is generally rectangular in shape, and a clearance hole is provided on the base plate to allow space for the camera on the mobile phone.

8. A flexible chain phone case according to claim 7, characterized in that: An L-shaped limiting plate is provided on the side of the supporting side that is away from the frame. The limiting plate is used to limit the position of the top surface of the mobile phone. The vertical side of the limiting plate is coplanar with the supporting side. The horizontal direction of the limiting plate is located on the side of the vertical side of the limiting plate that is away from the supporting side, and is parallel to the plane of the bottom plate.