Frame and detachable backboard combined mobile phone shell

By combining a frame with a detachable back panel, and using high-end eyeglass frame materials and a PET protective layer, this phone case solves the problems of durability and wear and tear on decorative elements in traditional phone cases, achieving a durable, aesthetically pleasing, and versatile user experience.

CN223681084UActive Publication Date: 2025-12-16DONGGUAN TANPU PRECISION TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202422629014.1
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-10-30
Publication Date
2025-12-16
Estimated Expiration
2034-10-30

AI Technical Summary

Technical Problem

Traditional phone case materials have poor resistance to salt spray tests and UV rays, tend to yellow after a period of use, and decorative elements are easily worn, resulting in a poor user experience.

Method used

It adopts a combination structure of frame and detachable back panel. The back panel is made of high-end eyeglass frame materials, such as cellulose acetate board and modified acrylic board, with patterned or transparent PET protective layer. It is connected by UV glue. The outer frame can be detached and assembled, and has magnetic modules and clearance holes to add decorations and electronic functional components.

Benefits of technology

It improves the durability and protection of phone cases and decorations, prevents wear and tear, enhances the user experience, provides diverse appearance variations and functions, and uses environmentally friendly and durable materials.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a frame and detachable backboard combined mobile phone shell. The frame and detachable backboard combined mobile phone shell comprises a backboard matched with the area of a rear cover of a mobile phone, a PET protection layer located on the surface of the backboard, an outer frame and a magnetic module. The back plate is a transparent plate body with patterns and is made of plastic or silica gel; the PET protective layer is a hardened transparent layer body; the outer frame is made of plastic or liquid silica gel; the back plate and the PET protective layer are integrally connected through UV glue in a covering manner; a space area is arranged between the surface of the back plate and the PET protective layer; the back plate is provided with corresponding avoiding holes corresponding to a camera assembly and a functional part of the mobile phone; a step structure is arranged on the edge of the avoiding hole corresponding to the camera assembly; the step structure is connected with a camera protection ring corresponding to the camera assembly. The outer frame and the back plate are detachably assembled; the outer frame is matched with a side frame of the mobile phone and is used for enclosing the side frame of the mobile phone; the outer frame is provided with a buckling position groove, and the back plate is provided with a buckling position corresponding to the buckling position groove.
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Description

TECHNICAL FIELD

[0001] The application relates to the technical field of mobile phone protective shell devices, and particularly relates to a combined mobile phone shell with a frame and a detachable back plate. BACKGROUND

[0002] At present, various mobile phone protective shells are available for consumers to choose from. With the improvement of consumer aesthetic level and the increase of consumer ability, the traditional element plastic series mobile phone shells cannot withstand salt spray testing and ultraviolet rays, and have gradually been removed from the shelves due to the disadvantage that they will turn yellow after being used for one or two months. The slightly high-end mobile phone shells on the market at present only adopt shell bodies processed by numerical control of aluminum alloy materials. Other types of processes develop some mobile phone shells with UV printed patterns, IMD processes, ordinary silica gel, pasting, embossing and adhesive decorations, which enrich the choices of consumers.

[0003] Although the decorations on the surface of the mobile phone shell are increased, the function of the mobile phone shell to protect the mobile phone from falling is continued to a certain extent, but the mobile phone shell itself becomes an object that needs to be used carefully by the user. The decorations on the surface of the mobile phone shell need to be avoided from being worn and hit, and a mobile phone shell can only be used for a few months and will be damaged in normal wear and tear, which brings a poor use experience to the user. CONTENT OF THE UTILITY MODEL

[0004] The utility model mainly aims at the above problems, and provides a combined mobile phone shell with a frame and a detachable back plate, which aims to solve the technical problems in the background art.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a combined mobile phone shell with a frame and a detachable back plate, which comprises a back plate matched with the area of a mobile phone back cover, a PET protective layer on the surface of the back plate, an outer frame and a magnetic attraction module.

[0006] The back plate and the PET protective layer are integrally connected by UV glue coating; and a space area is arranged between the surface of the back plate and the PET protective layer.

[0007] The back plate is provided with corresponding avoidance holes corresponding to the camera assembly and functional components of the mobile phone; the edge of the avoidance hole corresponding to the camera assembly is provided with a step structure; the step structure is connected with a camera protection ring corresponding to the camera assembly; the camera protection ring is made of any one of plastic, silica gel and metal.

[0008] The outer frame matches the side frame of the mobile phone and is used to enclose the side frame of the mobile phone; the outer frame is detachably assembled with the back plate; the outer frame is designed with a buckle slot, and the back plate is provided with a buckle corresponding to the buckle slot; the back plate is provided with a positioning slot corresponding to the magnetic attraction module, and the magnetic attraction module is embedded in the positioning slot and corresponds to the magnetic attraction position of the mobile phone.

[0009] Further, the outer frame is provided with a corresponding avoidance hole corresponding to the functional component of the mobile phone.

[0010] Further, the inner side of the outer frame is provided with a surrounding texture groove.

[0011] Further, it includes decorations; the decorations are arranged in the space area.

[0012] Further, the decoration is any one of liquid fluid, paper currency debris, cartoon ornament, flashing debris, iron sheet.

[0013] Further, the space area is provided with any one of NFC power taking antenna, mobile phone charging port power taking part, wireless charging coil power taking circuit, flickering PCBA circuit board, LED display module PCBA with power taking circuit, LED display screen module driven by power taking circuit, electronic ink screen.

[0014] Further, the back plate is any one of acetate board, modified acrylic board, celluloid board, PVC board, PET board with color pattern.

[0015] Further, it includes a camera protection cover embedded in the step structure, and the camera protection cover is arranged in accordance with the back plate material, color and texture pattern.

[0016] Further, it includes a metal frame embedded in the step structure, and the metal frame is a foldable support.

[0017] Further, the outer frame includes a PC material built-in support and a liquid silicone layer injected and molded to the built-in support.

[0018] Compared with the prior art, the combined mobile phone shell of the frame and the detachable back plate can apply the material for high-end glasses frame to the back plate of the mobile phone shell, so that the color of the back plate is more colorful, and the material itself has various three-dimensional patterns. The color inside the plate is irregularly arranged or regularly arranged pattern, and the plate is transparent and has a three-dimensional effect. The back plate with the pattern and the hardened PET protective layer are integrally connected, which can reduce the thickness of the mobile phone shell as a whole; the pattern texture of the back plate with the pattern is protected by the hardened transparent PET protective layer, which prevents the surface of the back plate with the pattern or the transparent back plate from directly contacting with the outside world, and avoids scratching and damaging the overall appearance. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the combined mobile phone shell of the frame and the detachable back plate.

[0020] Figure 2 It is an exploded schematic diagram of the combined mobile phone shell structure of the frame and the detachable back plate.

[0021] Figure 3 It is an exploded schematic diagram of another embodiment structure of the camera protection cover of the combined mobile phone shell of the frame and the detachable back plate.

[0022] Figure 4 It is an exploded schematic diagram of the back plate, the PET protective layer and the magnetic attraction module structure of the combined mobile phone shell of the frame and the detachable back plate.

[0023] Figure 5 It is a schematic diagram of the frame structure of the combined mobile phone shell of the frame and the detachable back plate.

[0024] Figure 6 It is a structural exploded schematic diagram of the space area of the combined mobile phone shell of the frame and the detachable back plate when the NFC power taking antenna, the LED display screen module and the power taking circuit PCBA plate are arranged.

[0025] Figure 7 It is a structural exploded schematic diagram of the combined mobile phone shell of the frame and the detachable back plate.

[0026] Figure 8 It is a schematic diagram of the flashing PCBA circuit board structure of the space area between the PET protective layer and the back plate of the combined mobile phone shell of the frame and the detachable back plate. Figure 7

[0027] ​The figure shows the reference signs: 1, back plate; 110, step structure; 120, buckle position; 130, positioning groove; 2, PET protective layer; 4, avoidance hole; 5, outer frame; 510, texture groove; 520, buckle groove; 6, magnetic attraction module; 7, camera protection cover; 8, camera protection ring; 9, NFC power supply antenna; 10, power supply circuit PCBA board; 11, display screen module; 12, flashing PCBA circuit board. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model. It can be understood that the drawings are only provided for reference and illustration, and are not used to limit the utility model. The connection relationship shown in the drawings is only for the convenience of clear description, and does not limit the connection mode.

[0029] It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component, or a middle component can exist at the same time. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as understood by those skilled in the art of the technology to which the utility model belongs. It should also be noted that, unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection, or the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances. The terms used in the specification of the utility model in this paper are only for the purpose of describing the specific embodiments, and are not intended to limit the utility model.

[0030] It should also be noted that in the description of the utility model, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and are not intended to indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0031] Please refer to Figure 1 - Figure 5The embodiment provides a combined mobile phone shell of a frame and a detachable back plate, which comprises a back plate 1 with a pattern or being transparent and matching the area of a mobile phone back shell, and a hardened transparent sheet PET protective layer 2; the back plate 1 with the pattern is integrally connected with the hardened PET protective layer 2, so that the thickness of the whole mobile phone shell can be reduced; the pattern texture of the back plate 1 with the pattern is protected by the hardened transparent PET protective layer 2, so that the surface of the back plate 1 with the pattern or being transparent is prevented from directly contacting the outside world, and the pattern is prevented from being scratched and the whole appearance is prevented from being damaged.

[0032] And a space area (not shown) is arranged between the surface of the back plate 1 and the PET protective layer 2; the space area can be provided with other color materials or functional parts.

[0033] The color or other functional materials of the space area can be seen through the transparent PET protective layer 2.

[0034] The back plate 1 is made of an acetate fiber plate material, a celluloid plate material, a modified acrylic plate material or a PET / PC plate material with a color pattern; the back plate 1 is provided with a corresponding avoidance hole 4 corresponding to a camera assembly and a functional part of a mobile phone; the functional part of the mobile phone is generally a microphone hole, a flash, a speaker hole and a light sensing module.

[0035] The edge of the avoidance hole 4 corresponding to the camera assembly is provided with a step structure 110; the step structure 110 is connected with a camera protection ring 8 corresponding to the camera assembly; the camera protection ring 8 is made of any one of plastic, silica gel and metal.

[0036] The step structure 110 is convenient for installing a camera protection cover 7 for a camera of a mobile phone; the step structure 110 can also install a metal protection ring or a metal protection ring with a support, the support is retractable, and the camera frame is more high-end and atmospheric.

[0037] The combined mobile phone shell further comprises an outer frame 5, the outer frame 5 is matched with a side frame of a mobile phone and is used for enclosing the side frame of the mobile phone; the outer frame 5 is designed with a buckle groove 520, the back plate 1 is provided with a buckle 120 corresponding to the buckle groove 520, the outer frame 5 and the back plate 1 are detachably assembled through the buckle groove 520 and the buckle 120, the back plate 1 is provided with a positioning groove 130 corresponding to a magnetic attraction module 6, the magnetic attraction module 6 is embedded in the positioning groove 130 and corresponds to a magnetic attraction position of a mobile phone. The outer frame 5 is made of plastic TPU or liquid silica gel material.

[0038] The surface-hardened PET protective layer 2 is arranged on both sides of the back plate 1 with a pattern, so that the back plate 1 with a pattern or transparent is no longer in contact with the outside world, and is not subjected to impact and wear, thereby protecting the back plate 1 with a pattern or transparent. The back plate 1 with a pattern or transparent can be made of various materials or have various surface patterns and internal structures. The surface-hardened PET protective layer 2 has a transparency of at least 50%, and can be translucent in a frosted skin process, so that the user can observe and appreciate the decorative pattern on the back plate 1 through the PET protective layer 2.

[0039] In some embodiments, the material of the back plate 1 is a high-molecular resin, cellophane, modified acrylic / PC with any of leopard, amber, or tortoiseshell pattern or printed content. The material of the back plate 1 is a special material plate for high-end glasses frames. These new materials are high-end materials for making high-end glasses frames, accessories, and buttons. The decorative pattern is the pattern of the back plate 1 itself.

[0040] The entire back plate 1 can also be an LED light-emitting plate with an NFC power taking and driving electronic function, or a back plate with an NFC power taking and driving electronic screen function. Further, the space region is provided with an NFC power taking antenna 9, a mobile phone charging port power taking component, a wireless charging coil power taking circuit, a flickering PCBA circuit board 12, an LED display module PCBA with a power taking circuit, and a display screen module 11 driven by the power taking circuit. The display screen module 11 can be any of an LED display screen module and an electronic ink screen. In the flickering PCBA circuit board 12, an LED lamp bead can be used as a flickering light source.

[0041] The NFC power taking antenna 9 corresponds to the NFC antenna position of the mobile phone. The NFC transmitting electric field of the mobile phone is coupled and inductively acquired by the power taking NFC antenna to transmit to the MCU with an NFC chip on the power taking circuit PCBA board 10 by using the NFC power taking circuit DCDC module step-down rectification technology. The graphic pattern and text content are edited through the APP of the mobile phone, and then transmitted to the LED display screen module 11 through the NFC antenna of the mobile phone to supply power to the LED display screen module 11. The electronic ink screen and the LED flickering PCBA circuit board 12 can also be powered by the NFC power taking antenna 9 and the power taking circuit PCBA board 10.

[0042] The LED display screen module 11 or the electronic ink screen or the flickering PCBA circuit board 12 is arranged in the hollow space region of the back plate 1 and the PET protective layer 2, and the display content is switched. The user can change the appearance of the mobile phone shell without replacing the mobile phone shell, thereby improving the user experience.

[0043] The hollow space area of the back plate 1 and the PET protective layer 2 can also be filled with flowing liquid, quicksand or cartoon materials as the back plate. The back plate 1 can also be replaced by a fully transparent PC and a hard PET sheet integrated structure, or a pattern printed on the back plate 1.

[0044] Please refer to Figure 8 In some embodiments, the flashing PCBA circuit board 12 is a lamp panel with closely packed lamp beads, which can be edited and uploaded to make the flashing PCBA circuit board 12 scroll or fixedly display text or patterns.

[0045] Through the magnetic module 6, the user's mobile phone can be connected with a wireless charging power supply with magnetic function or other magnetic external devices through a combination of a frame and a detachable back plate.

[0046] Please refer to Figure 3 and Figure 4 The back plate 1 with patterns or transparent back plate 1 is provided with a positioning groove 130 corresponding to the magnetic module 6.

[0047] This design can make the back plate 1 with patterns or transparent back plate 4 and the surface-hardened PET protective layer 2 be integrated before being connected, so that the magnetic module 6 is accommodated and positioned by the positioning groove 130, and the surface-hardened PET protective layer 2 and the back plate 4 with patterns or transparent back plate 4 are prevented from moving and being misplaced during processing and production.

[0048] Please refer to Figure 5 The liquid silicone plastic frame 5 is provided with corresponding avoidance holes 4 corresponding to the functional parts of the mobile phone.

[0049] The avoidance holes can be for the charging tail plug hole and the speaker hole of the mobile phone.

[0050] Please refer to Figure 5 The inner side of the frame 5 is provided with a surrounding texture groove 510.

[0051] The texture groove 510 is used for positioning the plastic built-in support (not shown) wrapped by the liquid silicone in the mold.

[0052] The texture groove 510 can also play the role of a reinforcing rib and enhance the aesthetics of the frame 5. The liquid silicone material is wrapped with a plastic built-in support, which improves the structural strength of the frame 5. The texture groove 510 also has the function of positioning the plastic base material for positioning and strengthening the hardness of the frame 5 during production. The frame 5 has a PC material built-in support in the middle as a support, which is wrapped by the liquid silicone injection molding. The frame is not as soft as traditional silicone without texture, and the texture of the liquid silicone is close to human skin. A layer of skin oil is sprayed on the surface to prevent the defect that the liquid silicone is easy to stick to dust.

[0053] The groove 510 can be a continuous rhombus pattern.

[0054] The decorative material (not shown) is arranged in the space between the patterned or transparent backboard 1 and the surface-hardened outer PET protective layer 2, and is enclosed by the patterned or transparent backboard 1 and the surface-hardened outer PET protective layer 2.

[0055] In some embodiments, the decorative material in the space between the backboard 1 and the hardened transparent hardened PET protective layer 2 is real paper currency debris and liquid fluid, which is provided by a state-recognized mint or a designated bank system for regular cooperation with external units. It can also be a simulated paper currency debris.

[0056] In some embodiments, the decorative material is a quicksand liquid object or an object with some cartoon patterns.

[0057] The material of the backboard 1 can be an acetate fiber plate and a modified acetate fiber process acrylic plate, a beautiful color and pattern texture celluloid, PC / PET, etc. The professional plate material for eyewear accessories; through the surface film hardening process of the base PET protective layer 2, the materials of the backboard 1 and the PET protective layer 2 can also be hardened PC or other materials.

[0058] By coating UV glue on the surface of the patterned or transparent backboard 1, the hardened PET or PC transparent or printed pattern color sheet or roll material is integrated into a plate material by professional UV film equipment, that is, the surface-hardened PET protective layer 2, the patterned or transparent backboard 1, and the surface-hardened PET protective layer 2 are integrated into one. The color and pattern of the original acetate fiber plate or modified plate remain unchanged, and after double-sided or single-sided film coating, the surface is smooth, isolated from the air, and the material will not shrink and deform, keeping the decorative pattern constant, beautiful, and bright.

[0059] Because the original acetate fiber and modified acetate fiber plate process plate has a rough surface with many knife marks and wire textures, it needs to be polished to remove them. After filling the uneven surface of the plate with UV glue and covering the transparent or colored pattern sheet by UV film process, the plate surface is very smooth and wear-resistant.

[0060] The combination type mobile phone shell forming process of the frame and the detachable back plate can also be applied to 3C digital accessory housings such as wireless charger housings, smart phone back covers, smart watch housings, watch bands, and replaces the existing traditional plastic and various metal housing processes. The existing processes are aesthetically fatigued, and the surface treatment processes all have environmental factors.

[0061] The specific forming process of the combination type mobile phone shell of the frame and the detachable back plate adopts surface-hardened PET, PC, acrylic and other sheet or roll materials, and completes the following processes through UV film covering or transfer printing equipment:

[0062] S001 First, the transparent back plate 1 material needs to be hardened by surface treatment process, and then the LOGO or color printing pattern is printed to make a decorative pattern. The back plate 1 with a pattern can also be used without printing any pattern.

[0063] S002 The recessed groove of the back plate 1 with a pattern or transparent back plate 1 is processed to magnetically position the groove 130, and the magnetic module 6 is fixed.

[0064] S004 The plate material that needs to be covered, such as PC\ABS, plastic plate material, acetate fiber, acrylic, celluloid and various pattern plate materials, is coated with UV glue on the surface, and then rolled with the film sheet, and then solidified immediately after irradiation by UV lamp tube. The front and back surfaces of the back plate 1 and the PET protective layer 2 of the film sheet are integrated.

[0065] S005 According to the needs of the product, single or double-sided film covering can be used. After single-sided film covering and solidification, the three-in-one integrated plate material of the surface-hardened PET protective layer 2, the transparent back plate 1 with a pattern, and the other PET protective layer 2 is processed into various shapes or grooves according to the needs of the product, such as making a mobile phone protective shell back cover, so that the entire product is integrated. Other electronic products or decorative parts can also be added to this plate material, and then covered with film to integrate the added parts.

[0066] This process can replace the original plastic mold opening, and no mold is needed. The required size is processed by numerical control process, or additional heat forming is done to make the curvature and preliminary structure, and various decorative materials needed to be implanted in the space area are installed, and then the surface is covered and packaged, and then the finished product is processed by precise numerical control.

[0067] The plate material using this process has the problem of shrinkage and deformation due to the contact with air and the absorption or volatilization of moisture. This process solves the problem of shrinkage and deformation. Thus, the 3C digital accessory housing and structure can be used to make the product more beautiful, rich and high-end, and the surface hardness is strengthened, smooth and fingerprint-resistant.

[0068] Please refer toFigure 2 and Figure 3 , including the camera cover 7 embedded in the back plate 1, PET protective layer 2.

[0069] The technical scheme provided by the present application is used in the process of the rear cover of the traditional mobile phone protective shell. The film-coated sheet can process various models of mobile phone back plates, and then combined with the mobile phone protective frame 5 opened into a whole mobile phone protective shell, which can be arbitrarily replaced with various color and shape three-in-one back plates.

[0070] More settings can also be made on the back plate using this process, such as installing electronic components of display devices in the space area, and changing the display content through the mobile phone APP. LED light-emitting plates can also be installed in the space area, and various patterns can be displayed through the mobile phone NFC or wireless charging power supply, making the mobile phone shell back plate more beautiful. Various liquid materials or solid cartoon or plant specimens can also be filled in the space area in the double-sided film coating process, making the back plate more three-dimensional. Based on the space provided in the space area, more various creative ideas can also be extended.

[0071] The material properties of the back plate 1 are the first to use acetate fiber plate materials in the high-end glasses industry. Acetate fiber plate materials usually have unique colors and patterns, and the touch is warm and comfortable, which is very suitable for creating luxury accessories. There are also modified acrylic plates on the market similar to acetate fiber plate materials, celluloid, PVC, PC, etc. Such materials have unique patterns: acetate fiber plate usually has rich colors and patterns, and can make unique mobile phone shells, each shell is a unique artwork.

[0072] Comfortable touch: acetate fiber has good touch, and there is no cold feeling of metal or plastic when using, and there is no need for non-environmental oil spraying or other printing, silk printing, and other surface treatment processes. The original pattern and polishing process are very suitable for long-term holding.

[0073] And environmentally friendly and sustainable: acetate fiber is an environmentally friendly material made of plant cellulose, resistant to ultraviolet light and sweat corrosion on the hands. It will never discolor or become brittle, and it is very suitable for modern users' pursuit of environmental protection. Transparent PC, PET, and various composite boards or other plastic materials can also be used for back plate 1 process. Various pattern printing, silk printing, UV printing, and transfer processes can be done with these traditional and inexpensive materials. This back plate is not limited to various metals and carbon fibers. The space area of the back plate 1 can also increase various electronic components, such as adding NFC power, charging port power, wireless charging power, LED display flashing back plate, and display screen back plate, which can be driven to change the display content through a dedicated APP.

[0074] In the specification and claims of this application, the words "comprise", "comprising", "include", "including" and the like are to be construed in an inclusive sense, as opposed to an exclusive or exhaustive sense, that is to say, in the sense of "including, but not limited to".

[0075] Some features of the present application are described in different embodiments for the sake of clarity, however, these features can also be combined in a single embodiment. Conversely, some features of the present application are described in a single embodiment for the sake of brevity, however, these features can also be implemented individually or in any suitable combination in different embodiments.

[0076] The above only describes the preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A combination of a frame and a detachable back plate for a mobile phone, characterized in that, Including the back plate matched with the area of the back cover of the mobile phone, the PET protective layer on the surface of the back plate, the outer frame, the magnetic suction module; the back plate is a patterned or transparent plate, the material is plastic or silica gel; the PET protective layer is a hardened transparent layer; the outer frame material is plastic or liquid silicone; The back plate and the PET protective layer are integrally connected by UV glue; and a space area is provided between the surface of the back plate and the PET protective layer; The back plate is provided with a corresponding avoidance hole corresponding to the camera assembly and the functional component of the mobile phone; the edge of the avoidance hole corresponding to the camera assembly is provided with a step structure; the step structure is connected with a camera protection ring corresponding to the camera assembly; the material of the camera protection ring is any one of plastic, silica gel and metal; The outer frame matches the side frame of the mobile phone and is used for enclosing the side frame of the mobile phone; the outer frame and the back plate are detachably assembled, the outer frame is designed with a clamping groove, and the back plate is provided with a clamping position corresponding to the clamping groove; the back plate is provided with a positioning groove corresponding to the magnetic suction module, and the magnetic suction module is embedded in the positioning groove and corresponds to the magnetic suction position of the mobile phone.

2. The combination of a frame and a detachable back plate for a mobile phone according to claim 1, wherein, The outer frame is provided with a corresponding avoidance hole corresponding to the functional component position of the mobile phone.

3. The combination phone case of claim 1, wherein, The inner side of the outer frame is provided with a surrounding texture groove.

4. The combination of a frame and a detachable back plate for a mobile phone according to claim 1, wherein, Including a decoration; the decoration is arranged in the space area.

5. The combination of a frame and a detachable back plate for a mobile phone according to claim 4, wherein, The decoration is any one of liquid fluid, paper currency debris, cartoon ornament, flashing debris and iron sheet.

6. The combination phone case of claim 1, wherein, The space area is provided with any one of NFC power taking antenna, mobile phone charging port power taking part, wireless charging coil power taking circuit, flickering PCBA circuit board, LED display module PCBA with power taking circuit, LED display screen module driven by power taking circuit and electronic ink screen.

7. The combination phone case of a bezel and a detachable back plate of claim 1, wherein, The back plate is any one of acetate board, modified acrylic board, celluloid board, PVC board and PET board with color pattern.

8. The combination phone case of a bezel and a detachable back plate of claim 1, wherein, Including the camera protection cover embedded in the step structure, the camera protection cover is arranged in the same way as the back plate material, color and texture pattern.

9. The combination phone case of a bezel and a detachable back plate of claim 1, wherein, Including the metal frame embedded in the step structure, the metal frame is a foldable support.

10. The combination phone case of a bezel and a detachable back plate of claim 1, wherein, The outer frame includes an inner support made of PC material and a liquid silicone layer injected and molded on the inner support.