Mobile phone shell with expansion piece
By incorporating mounting slots and card slots, along with a clamping ring and threaded structure, the problem of unstable magnetic connections is solved, achieving a stable connection between the expansion component and the phone case while reducing thickness and improving the user experience.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHEN YANJI TECHNOLOGY CO LTD
- Filing Date
- 2025-05-20
- Publication Date
- 2026-05-19
AI Technical Summary
In existing technologies, magnetically connected phone cases and e-ink screen readers are prone to loosening, resulting in unstable connections and increased overall thickness, which affects the phone's feel and convenience.
The design incorporates mounting slots and clips, along with a clamping ring and threaded structure, to ensure a secure connection between the expansion piece and the phone case, while reducing the overall thickness.
It achieves a stable connection between the expansion component and the phone case, reduces the overall thickness, and improves the security and convenience of the connection.
Smart Images

Figure CN224264999U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of mobile phone case technology, specifically a mobile phone case with an extension component. Background Technology
[0002] With the widespread use of smartphones, users' demands for mobile phone functions are becoming increasingly diverse. In scenarios involving prolonged use of electronic devices (such as reading), traditional LCD or OLED screens often cause visual fatigue and inconvenience due to issues such as blue light radiation, screen reflection, and battery consumption. To address these problems, e-ink technology has gradually become a popular solution. It features low power consumption, high contrast, and no blue light radiation, making it particularly suitable for extended reading and providing a more comfortable visual experience. Especially under sunlight, e-ink screens offer better readability.
[0003] However, although there are some standalone devices with e-ink screen functionality on the market, such as e-ink readers, these devices often exist independently and cannot be effectively integrated with smartphones, forcing users to carry multiple devices, which not only increases the burden but also brings inconvenience.
[0004] Using magnetic technology to connect a phone case to an e-ink reader is a common solution. However, magnetic attachment is not very secure and can easily fall off when the phone is shaken. In addition, it can also result in an unsatisfactory thickness of the phone case. Both the phone case and the e-ink reader need to have integrated magnetic rings, and the thickness of the phone case and the e-ink reader are superimposed, which seriously affects the overall feel and convenience of the phone. Utility Model Content
[0005] (a) Technical problems to be solved
[0006] In view of the shortcomings of the existing technology, this utility model provides a mobile phone case with an extension component, which has the advantages of stable connection, thinness and good comfort.
[0007] (II) Technical Solution
[0008] To achieve the aforementioned goals of stable connection, thinness, and excellent comfort, this utility model provides the following technical solution: a mobile phone case with an extension component, comprising a phone case shell, an extension component, and further comprising:
[0009] The mounting slot is formed through the housing.
[0010] The outer wall of the extension member near the housing has a slot for the edge of the mounting groove to engage.
[0011] As a preferred embodiment of this utility model, the inner edge of the mounting groove is recessed to form a recessed groove, and the outer edge of the mounting groove is a snap-in part that snaps into the snap-in groove.
[0012] As a preferred technical solution of this utility model, the extension member is divided into a main body away from the shell and an embedded part close to the shell by the slot, and the thickness of the embedded part corresponds to the depth of the slot.
[0013] As a preferred embodiment of this utility model, a clamping ring is movably provided in the slot to clamp the edge of the mounting slot.
[0014] As a preferred embodiment of this utility model, a threaded cylinder is fixedly installed on the side of the extension member, and a threaded rod is screwed into the threaded cylinder. One end of the threaded rod is rotatably connected to the clamping ring, and the other end is fixedly connected to a knob.
[0015] As a preferred embodiment of this utility model, the expansion component is an e-ink screen reader.
[0016] (III) Beneficial Effects
[0017] Compared with the prior art, this utility model provides a mobile phone case with an extension component, which has the following beneficial effects:
[0018] 1. This phone case with expansion parts uses an innovative mounting slot and card slot design to ensure that the expansion parts can be firmly connected to the phone case, avoiding the loosening problem of traditional magnetic methods and improving the stability and security of the connection.
[0019] 2. This phone case with an expansion component significantly reduces the overall thickness by partially overlapping the thickness of the expansion component with the thickness of the phone case, thus ensuring the phone's feel and convenience. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention;
[0021] Figure 2 This is an exploded view of the present invention;
[0022] Figure 3 This is an enlarged schematic diagram of the clamping ring portion in another embodiment of the present invention.
[0023] In the diagram: 1. Housing; 2. Extension piece; 3. Mounting slot; 4. Slot; 5. Countersunk groove; 6. Pressure ring; 7. Threaded cylinder; 8. Threaded rod; 9. Knob. Detailed Implementation
[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0025] Example 1:
[0026] Please see Figure 1 and Figure 2 A mobile phone case with an expansion component includes a case shell 1 and an expansion component 2, such as... Figure 2 As shown, a mounting groove 3 is formed through the housing 1. A slot 4 is formed on the outer wall of the extension member 2 near the housing 1 for the edge of the mounting groove 3 to be inserted. When the extension member 2 needs to be installed, the edge of the mounting groove 3 is inserted into the slot 4. This ensures the connection strength and makes the extension member 2 less likely to fall off. At the same time, the thickness of the extension member 2 and the housing 1 overlaps to significantly reduce the overall thickness and ensure the feel and convenience of the phone.
[0027] In this embodiment, as Figure 2 As shown, the inner edge of the mounting groove 3 is recessed to form a recessed groove 5, and the outer edge of the mounting groove 3 is a snap-in part that snaps into the snap-in groove 4.
[0028] The entire expansion component 2 is divided into a main body away from the housing 1 and an insert part close to the housing 1 by the slot 4. The thickness of the insert part corresponds to the depth of the recess 5. In this way, when the insert part is inserted into the slot 4, the insert part of the expansion component 2 can be inserted into the recess 5 and is flush with the entire inner wall of the housing 1, so as to effectively ensure the function of the housing 1 itself and not affect the installation and protection of the mobile phone.
[0029] In this embodiment, the expansion component 2 is an e-ink screen reader. Of course, those skilled in the art can also choose other forms of expansion components as needed, such as external batteries, camera modules, etc.
[0030] The connection structure of this utility model eliminates the need to modify the internal structure of the e-ink reader itself; only a groove needs to be cut into its outer wall. It also adapts to different types of phone cases, requiring only a groove to be cut into the phone case, resulting in lower costs.
[0031] Example 2:
[0032] Please see Figure 3Based on Embodiment 1, in this embodiment, a clamping ring 6 is also movably provided in the slot 4. The clamping ring 6 is used to clamp the edge of the mounting slot 3, thereby further ensuring the installation effect of the extension 2 in the mounting slot 3 and preventing it from falling off due to deformation of the housing 1.
[0033] like Figure 3 As shown, a threaded cylinder 7 is fixedly installed on the side of the extension part 2. A threaded rod 8 is screwed into the threaded cylinder 7. One end of the threaded rod 8 is rotatably connected to the clamping ring 6, and the other end is fixedly connected to a knob 9. When the knob 9 is turned to rotate the threaded rod 8, the threaded rod 8 will move left and right under the action of the threaded cylinder 7 (within a certain range). Figure 3 From a visual perspective, this can cause the clamping ring 6 to move left and right, clamping the edge of the mounting groove 3 to ensure the connection effect, or loosening the edge of the mounting groove 3 to facilitate removal.
[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A mobile phone case with an extension component, comprising a casing (1) and an extension component (2), characterized in that, Also includes: The mounting groove (3) is formed through the housing (1); The expansion member (2) has a slot (4) on the outer wall of the end near the housing (1) for the edge of the mounting slot (3) to be inserted.
2. A mobile phone case with an extension component according to claim 1, characterized in that: The inner edge of the mounting groove (3) is recessed to form a recessed groove (5), and the outer edge of the mounting groove (3) is a snap-in part that snaps into the snap-in groove (4).
3. A mobile phone case with an extension component according to claim 2, characterized in that: The extension (2) is divided by the slot (4) into a main body away from the shell (1) and an embedded part close to the shell (1), and the thickness of the embedded part corresponds to the depth of the groove (5).
4. A mobile phone case with an extension component according to claim 1, characterized in that: A clamping ring (6) is movably disposed in the slot (4) for clamping the edge of the mounting slot (3).
5. A mobile phone case with an extension element according to claim 4, characterized in that: A threaded cylinder (7) is fixedly installed on the side of the extension part (2). A threaded rod (8) is screwed into the threaded cylinder (7). One end of the threaded rod (8) is rotatably connected to the clamping ring (6), and the other end is fixedly connected to a knob (9).
6. A mobile phone case with an extension element according to any one of claims 1-5, characterized in that: The extension component (2) is an e-ink screen reader.