Mobile terminal protective shell

Abstract

Disclosed is a mobile terminal protective shell, comprising a protective shell body, a magnetic component, a circuit board assembly and a display screen, wherein the protective shell body has an accommodating cavity for accommodating a mobile terminal; the magnetic component is ring shaped and is arranged on the protective shell body; the circuit board assembly is arranged on the protective shell body and is located on the outer peripheral side of the magnetic component; the display screen is arranged on the protective shell body and is electrically connected to the circuit board assembly; and the display screen is located on the inner peripheral side of the magnetic component.

Description

Mobile terminal protective case

[0001] The present application claims priority to the Chinese patent application No. 202421746257.7, filed on July 23, 2024, and entitled "A mobile terminal protective case", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present application belongs to the field of mobile terminal accessories, and in particular relates to a mobile terminal protective case. BACKGROUND

[0003] Mobile terminals such as mobile phones and tablet computers are commonly used by users. Users often wear a protective case for the mobile terminal to provide protection for the mobile terminal in daily use. TECHNICAL PROBLEM

[0004] Taking a mobile phone case as an example, some mobile phone cases are provided with a magnetic ring on the back for magnetic attraction and fixation. However, the magnetic ring has a large area and is located in the middle of the mobile phone case, which makes it difficult to set other functional devices in the case of limited volume. TECHNICAL SOLUTION

[0005] The present application provides a mobile terminal protective case, comprising:

[0006] A protective case body is provided with a receiving cavity for accommodating a mobile terminal.

[0007] A magnetic component is annular and arranged on the protective case body.

[0008] A circuit board assembly is arranged on the protective case body and located on the outer peripheral side of the magnetic component.

[0009] A display screen is arranged on the protective case body and electrically connected to the circuit board assembly, and the display screen is located on the inner peripheral side of the magnetic component. ADVANTAGEOUS EFFECTS

[0010] In the present application, by arranging the display screen on the inner peripheral side of the magnetic component and the circuit board assembly on the outer peripheral side of the magnetic component, the space around the magnetic component can be reasonably utilized to compactly arrange the magnetic component, the circuit board assembly and the display screen on the protective case body, so that the mobile terminal protective case can be compatible with the display screen and the magnetic component in the case of limited volume. BRIEF DESCRIPTION OF DRAWINGS

[0011] Fig. 1 is a structural schematic view of a mobile terminal protective case according to an embodiment of the present application.

[0012] FIG. 2 is a structural diagram of another perspective view of the mobile terminal protective case shown in FIG. 1.

[0013] FIG. 3 is a structural diagram of the mobile terminal protective case shown in FIG. 2 after installation of a cover plate.

[0014] FIG. 4 is an exploded view of the mobile terminal protective case shown in FIG. 3.

[0015] FIG. 5 is a structural diagram of a connection of a control circuit board and a coil shown in FIG. 4. Embodiments of the present application

[0016] Embodiments of the present application will be described in detail below with reference to the attached drawings, examples of which are shown in the drawings, wherein the same or similar components are denoted by the same or similar reference numerals throughout. The embodiments described below by reference to the drawings are exemplary and are for the purpose of explanation only, and are not to be understood as limiting the present application.

[0017] In order to make the technical personnel in the art better understand the scheme of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0018] It should be noted that, in this document, relational terms such as first and second, and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions.

[0019] Moreover, the terms "comprising", "including", or any other variant thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without more limitations, an element defined by the statement "comprising a" does not exclude the existence of additional identical elements in the process, method, article, or apparatus that includes the element.

[0020] In the description of the embodiments of the present application, the words "example" or "for example" are used to mean serving as an example, instance, or illustration. Any embodiment or design scheme described as "example" or "for example" in the embodiments of the present application is not to be construed as being more preferred or having more advantages than other embodiments or design schemes. The use of the words "example" or "for example" is intended to present the relative concept in a clear manner.

[0021] In addition, "a plurality of" in the embodiments of the present application refers to two or more, and therefore "a plurality of" can also be understood as "at least two" in the embodiments of the present application. "At least one" can be understood as one or more, for example, one, two or more. For example, "including at least one" means including one, two or more, and does not limit which ones are included, for example, including at least one of A, B and C means including A, B, C, A and B, A and C, B and C, or A and B and C.

[0022] The mobile terminal protective shell can be a mobile phone protective shell or a tablet computer protective shell. Of course, the mobile terminal protective shell can also be a protective shell of any other mobile terminal, and the embodiments of the present application do not limit this.

[0023] Referring to FIGS. 1 and 2, FIG. 1 is a structural schematic diagram of a mobile terminal protective shell according to an embodiment of the present application, and FIG. 2 is a structural schematic diagram of the mobile terminal protective shell from another perspective. The mobile terminal protective shell includes a protective shell body 100, a magnetic attraction component 200, a circuit board assembly 300 and a display screen 400.

[0024] The protective shell body 100 is provided with a receiving cavity 11 for accommodating a mobile terminal. The magnetic attraction component 200 is annular and is arranged on the protective shell body 100. The circuit board assembly 300 is arranged on the protective shell body 100 and is located on the outer peripheral side of the magnetic attraction component 200. The display screen 400 is arranged on the protective shell body 100 and is electrically connected with the circuit board assembly 300. The display screen 400 is located on the inner peripheral side of the magnetic attraction component 200.

[0025] It can be understood that by arranging the display screen 400 on the inner peripheral side of the magnetic attraction component 200 and arranging the circuit board assembly 300 on the outer peripheral side of the magnetic attraction component 200, the space around the magnetic attraction component 200 can be reasonably utilized to compactly arrange the magnetic attraction component 200, the circuit board assembly 300 and the display screen 400 on the protective shell body 100, so that the mobile terminal protective shell can be compatible with the display screen 400 and the magnetic attraction component 200 in the case of limited volume.

[0026] It should be noted that if the magnetic component 200 and the display screen 400 are stacked along the thickness direction of the protective shell body 100, the magnetic component 200 is located on the outer side of the display screen 400, or the display screen 400 is located on the outer side of the magnetic component 200, which will cause the thickness of the mobile terminal protective shell to be too large, affecting the user's experience. In addition, when the magnetic component 200 is located on the outer side of the display screen 400, the display content of the display screen 400 will be blocked by the magnetic component 200, affecting the display effect of the display screen 400; when the display screen 400 is located on the outer side of the magnetic component 200, the distance between the magnetic component 200 and the external magnetic member is too large, which ultimately affects the stability and reliability of the magnetic component 200.

[0027] It should also be noted that the magnetic component 200 is annular, which can be a closed annular structure, or a non-closed annular structure with at least one opening in the circumferential direction, and the embodiments of the present application do not limit this.

[0028] In some embodiments, the area of the display screen 400 is S1. The area of the region enclosed by the inner side edge of the magnetic component 200 is S2. The ratio of S1 and S2 is greater than or equal to 0.7. That is, the display screen 400 occupies at least 70% of the area of the inner circumferential side of the magnetic component 200, so that by providing a larger display screen 400 on the inner side of the magnetic component 200, the screen ratio of the mobile terminal protective shell can be improved, and ultimately the aesthetics of the mobile terminal protective shell can be improved.

[0029] For example, the ratio of S1 and S2 can be 0.7, 0.74, 0.75, 0.794, 0.8, 0.814, 0.85, 0.883, 0.9, 0.94, 0.95, 0.978, 0.985, 0.99 or 1, and the embodiments of the present application do not limit this.

[0030] In some embodiments, the inner side edge shape of the magnetic component 200 is the same as the outer side edge shape of the display screen 400, so that the same shape allows the display screen 400 to fill the space on the inner circumferential side of the magnetic component 200 as much as possible, thereby improving the screen ratio of the mobile terminal protective shell, and ultimately improving the aesthetics of the mobile terminal protective shell.

[0031] For example, the magnetic component 200 is a circular ring, and the display screen 400 is also circular.

[0032] Optionally, the magnetic component 200 can also be a square ring, and the display screen 400 can also be square. Of course, in some other embodiments, the inner side edge shape of the magnetic component 200 can also be different from the outer side edge shape of the display screen 400, and the embodiments of the present application do not limit this.

[0033] In some embodiments, the outer diameter of the display screen 400 is 44-50 mm, so that the display screen 400 with a larger area can fill the space on the inner circumferential side of the magnetic component 200 as much as possible, so as to improve the screen ratio of the mobile terminal protective case and finally improve the aesthetics of the mobile terminal protective case.

[0034] For example, the outer diameter of the display screen 400 is 44 mm, 44.21 mm, 44.5 mm, 45 mm, 45.5 mm, 45.9 mm, 46 mm, 47 mm, 47.7 mm, 47.9 mm, 48 mm, 48.17 mm, 48.5 mm, 49 mm, 49.14 mm, 49.5 mm or 50 mm, which is not limited in the embodiments of the present application.

[0035] In some embodiments, the display screen 400 has a circular display area for display, and the diameter of the display area is 38-43.5 mm, so as to improve the screen ratio of the mobile terminal protective case and finally improve the aesthetics of the mobile terminal protective case.

[0036] For example, the diameter of the display area is 38 mm, 38.3 mm, 38.5 mm, 38.76 mm, 38.9 mm, 39 mm, 39.12 mm, 39.41 mm, 39.5 mm, 39.7 mm, 39.88 mm, 40 mm, 40.1 mm, 40.4 mm, 40.5 mm, 41 mm, 41.04 mm, 41.3 mm, 41.5 mm, 41.8 mm, 42 mm, 42.1 mm, 42.14 mm, 42.2 mm, 42.5 mm, 42.83 mm, 43 mm, 43.4 mm or 43.5 mm, which is not limited in the embodiments of the present application.

[0037] In some embodiments, the inner side edge of the magnetic component 200 is in contact with the outer side edge of the display screen 400. Then, it can also be understood that there is no gap between the magnetic component 200 and the display screen 400, or that the inner circumferential side edge of the magnetic component 200 only partially has a gap with the display screen 400, so that the display screen 400 can fill the inner circumferential side area of the magnetic component 200 as much as possible to improve the screen ratio of the mobile terminal protective case and finally improve the aesthetics of the mobile terminal protective case.

[0038] Optionally, the distance between the inner side edge of the magnetic component 200 and the outer side edge of the display screen 400 is L, and the outer diameter of the display screen 400 is D. The ratio of L to D is less than or equal to 0.1, so that by reducing the gap between the display screen 400 and the magnetic component 200, the display screen 400 can fill the inner circumferential side area of the magnetic component 200 as much as possible to improve the screen ratio of the mobile terminal protective case and finally improve the aesthetics of the mobile terminal protective case.

[0039] For example, the ratio of L to D is 0.01, 0.02, 0.034, 0.041, 0.05, 0.055, 0.06, 0.07, 0.085, 0.09, 0.097, or 0.1, which is not limited in the embodiments of the present application.

[0040] In some embodiments, the ratio of the outer diameter of the magnetic component 200 to the width of the mobile terminal protective shell is greater than or equal to 0.7. On the one hand, by increasing the area of the magnetic component 200, the stability and reliability of the magnetic component 200 can be improved; on the other hand, when the size of the magnetic component 200 is large, the area of the display screen 400 on the inner circumferential side of the magnetic component 200 is also correspondingly set to be larger, so as to improve the screen ratio of the mobile terminal protective shell, and finally the aesthetic sense of the mobile terminal protective shell can be improved.

[0041] For example, the ratio of the outer diameter of the magnetic component 200 to the width of the mobile terminal protective shell can be 0.7, 0.74, 0.75, 0.794, 0.8, 0.814, 0.85, 0.883, 0.9, 0.94, 0.95, 0.978, 0.985, 0.99, or 1, which is not limited in the embodiments of the present application.

[0042] Please continue to refer to FIG. 3 and FIG. 4, FIG. 3 is a structure schematic diagram of the mobile terminal protective shell after installing the cover plate, and FIG. 4 is an exploded view of the mobile terminal protective shell shown in FIG. 3. In some embodiments, the protective shell body 100 includes a bottom wall 12 located on one side in the thickness direction. The mobile terminal protective shell further includes a cover plate 500 installed on the bottom wall 12. Wherein, the cover plate 500 and the protective shell body 100 form an installation groove 121 therebetween, and the magnetic component 200, the circuit board assembly 300 and the display screen 400 are all arranged in the installation groove 121. Therefore, the magnetic component 200, the circuit board assembly 300 and the display screen 400 can be protected by the cover plate 500, and the assembly of the magnetic component 200, the circuit board assembly 300 and the display screen 400 can be completed by the cooperation of the cover plate 500 and the protective shell body 100, so that the mobile terminal protective shell has the advantage of being easy to assemble.

[0043] For example, the bottom wall 12 is provided with an installation groove 121 with an opening facing the cover plate 500. Then, it can also be understood that the opening of the installation groove 121 is away from the accommodating cavity 11 of the protective shell body 100. The cover plate 500 is installed on the bottom wall 12 to cover the installation groove 121. Then, in the actual assembly process, the magnetic component 200, the circuit board assembly 300 and the display screen 400 can be directly assembled into the installation groove 121 from the outside of the protective shell body 100, and then the cover plate 500 is covered on the installation groove 121 to complete the assembly.

[0044] Of course, in some other embodiments, the cover plate 500 can be provided with the mounting slot 121, and after the cover plate 500 is arranged on the bottom wall 12 of the protective shell body 100, the bottom wall 12 covers the mounting slot 121, and the embodiments of the present application do not make any limitation in this regard.

[0045] In some embodiments, the cover plate 500 is provided with a display window corresponding to the display screen 400. Thus, the display screen 400 can be well protected by the cover plate 500.

[0046] It can be understood that the cover plate 500 can be an integrally formed plate structure, or can be formed by splicing multiple plates, and the embodiments of the present application do not make any limitation in this regard.

[0047] It can also be understood that the cover plate 500 can be made of glass, acrylic or transparent PC (Polycarbonate, Polycarbonate) material, and the embodiments of the present application do not make any limitation in this regard.

[0048] For example, the cover plate 500 can be made of transparent material. In the plane where the cover plate 500 is located, the area where the cover plate 500 and the orthographic projection of the display screen 400 are misaligned is coated with a light-shielding coating, so that the area where the cover plate 500 and the orthographic projection of the display screen 400 coincide forms a display window.

[0049] In some embodiments, the protective shell body 100 can be provided with a camera hole 13.

[0050] Correspondingly, the cover plate 500 can be provided with an avoidance gap 51 which avoids the camera hole 13. For example, the avoidance gap 51 can be located at one end of the cover plate 500 along the length direction of the protective shell body 100.

[0051] For example, the rear camera of the mobile terminal can be located at the upper left corner of the mobile terminal, and the camera hole 13 is also located at the upper left corner of the protective shell body 100. Correspondingly, the avoidance gap 51 can also be located at the upper left corner of the cover plate 500.

[0052] In some embodiments, the protective shell body 100 further includes a ring wall 14 arranged around the bottom wall 12, so that the accommodation cavity 11 is formed by the bottom wall 12 and the ring wall 14.

[0053] Optionally, the protective shell body 100 can further include two side walls (not shown in the figure), and one side wall is connected to each end of the bottom wall 12 along the length direction, so that the two side walls can clamp the mobile terminal from both ends of the mobile terminal along the length direction, so that the mobile terminal is accommodated in the accommodation cavity 11 formed by the bottom wall 12 and the two side walls, and the embodiments of the present application do not make any limitation in this regard.

[0054] Please continue to refer to FIG. 5, which is a schematic diagram of the connection structure of the control circuit board and the coil shown in FIG. 4. In some embodiments, the circuit board assembly 300 includes a control circuit board 31 and a radio frequency antenna 32. The control circuit board 31 is electrically connected with the display screen 400. The radio frequency antenna 32 is electrically connected with the control circuit board 31, and the radio frequency antenna 32 is used to transmit at least one of energy and information with the mobile terminal in the accommodating cavity 11.

[0055] For example, the radio frequency antenna 32 can be used only to supply power to the control circuit board 31, so that the control circuit board 31 can supply power to the display screen 400. The radio frequency antenna 32 can also be used only to transmit control commands to the control circuit board 31, so that the control circuit board 31 can control the display screen 400 to display corresponding information based on the control commands. Of course, the radio frequency antenna 32 can also be used to supply power to the control circuit board 31 and transmit control commands to the circuit board assembly 300 at the same time, and the embodiments of the present application do not limit this.

[0056] In some embodiments, the radio frequency antenna 32 can include a QI coil, an NFC (Near Field Communication) coil, a Bluetooth antenna, and the like, and the embodiments of the present application do not limit this.

[0057] In some embodiments, the radio frequency antenna 32 includes a coil formed by winding an enameled wire.

[0058] It can be understood that in the related art, the coil is usually formed by the copper layer on the surface of the flexible circuit board, so the thickness of the coil formed on the surface of the flexible circuit board is less than 10 microns. Therefore, in the case that the thickness of the coil formed on the surface of the flexible circuit board is small, the energy transmission efficiency between the radio frequency antenna 32 and the mobile terminal is low.

[0059] By contrast, in the embodiments of the present application, the diameter of the enameled wire wound to form the coil is usually greater than the thickness of the coil formed on the surface of the flexible circuit board, for example, the diameter of the enameled wire can be greater than or equal to 150 microns. Therefore, the coil formed by winding the enameled wire can effectively improve the energy transmission efficiency between the radio frequency antenna 32 and the mobile terminal.

[0060] In some embodiments, the diameter of the enameled wire can be 150 to 230 microns. In this way, it can be ensured that the enameled wire has a large enough diameter to ensure that the coil has good energy transmission efficiency, and it can also be avoided that the diameter of the enameled wire is too large, which causes the coil to be too large and the mobile terminal protective shell to be too thick and heavy.

[0061] For example, the diameter of the enameled wire can be 150 microns, 154 microns, 155 microns, 160 microns, 161.07 microns, 165.5 microns, 168.7 microns, 170 microns, 180 microns, 195 microns, 200 microns, 200.4 microns, 205 microns, 210 microns, 214.7 microns, 215.9 microns, 220 microns, 221 microns, 225 microns, or 230 microns, without limitation to the embodiments of the present application.

[0062] It can also be understood that the enameled wire has excellent electrical conductivity and insulation performance, thereby improving the energy transmission efficiency between the coil and the external device. For example, the enameled wire can be an acetal enameled wire, a polyester enameled wire, a polyurethane enameled wire, a polyester-imine enameled wire, or a polyimide enameled wire, etc., without limitation to the embodiments of the present application.

[0063] In some embodiments, the groove bottom wall 12 of the mounting groove 121 is provided with a positioning groove 122. The coil is embedded in the positioning groove 122.

[0064] Thus, the coil can be quickly mounted on the protective shell body 100, and good shaping and fixing effects can be provided for the coil.

[0065] For example, the positioning groove 122 can be a circular groove or an oval groove matched with the coil, without limitation to the embodiments of the present application.

[0066] Of course, in some other embodiments, the groove bottom wall 12 of the mounting groove 121 can also not be provided with the positioning groove 122, and the coil can be directly pasted and fixed in the mounting groove 121, without limitation to the embodiments of the present application.

[0067] In some embodiments, the control circuit board 31 and the radio frequency antenna 32 are arranged side by side on the same side of the protective shell body 100. For example, the coil and the display screen 400 are arranged side by side on the bottom wall 12 of the protective shell body 100. Thus, compared with the coil and the display screen 400 being stacked on the bottom wall 12, the mobile terminal protective shell can be made thinner, so as to improve the user experience.

[0068] In some embodiments, the control circuit board 31 is provided with a wiring portion. The circuit board assembly 300 further includes a wire 33, one end of which is connected to the wiring portion. The other end of the wire 33 is connected to the radio frequency antenna 32, so that the control circuit board 31 and the radio frequency antenna 32 are electrically connected, and the length of the wire 33 is greater than the spacing between the wiring portion and the radio frequency antenna 32.

[0069] So, it can also be understood that the wire 33 is reserved a certain length. Further, on the one hand, it can facilitate the wiring and assembly between the control circuit board 31 and the radio frequency antenna 32; on the other hand, it can also facilitate the replacement of different models or sizes of the control circuit board 31 and the radio frequency antenna 32, so as to eliminate the influence of different spacing of the wiring part and the radio frequency antenna 32 through the length reserved by the wire 33. Thus, the embodiment of the present application has the advantages of convenient assembly and good universal performance.

[0070] In some embodiments, the wire 33 can be integrally formed with the radio frequency antenna 32. For example, the middle part of the enameled wire is wound to form the radio frequency antenna 32, and the two ends of the enameled wire are extended to form the wire 33, which is not limited in the embodiment of the present application.

[0071] In some embodiments, the display screen 400 can be an ink screen.

[0072] It can be understood that the ink screen only needs to be powered when the pixel changes or when it is necessary to change the display content. Therefore, the mobile terminal protective shell can not need to be built-in battery or external power supply, and only a small amount of external energy can be obtained through the radio frequency antenna 32.

[0073] For example, a mobile terminal such as a mobile phone can send a radio frequency signal to the radio frequency antenna 32. The mobile terminal protective shell obtains radio frequency energy through the radio frequency antenna 32 to drive the mobile terminal protective shell to work, and receives the command sent by the mobile terminal through the radio frequency antenna 32, so as to change the information to be displayed by the ink screen.

[0074] Of course, in some other embodiments, the display screen 400 can also be a liquid crystal display module, a flexible screen, etc., which is not limited in the embodiment of the present application.

[0075] In the above embodiments, the description of each embodiment has its own emphasis, and the part not described in detail in a certain embodiment can be referred to the related description of other embodiments.

[0076] The mobile terminal protective shell provided by the embodiment of the present application is described in detail above, and the principle and implementation manner of the present application are described by applying specific examples in this paper; the above embodiment is only used to help understand the method and core idea of the present application; at the same time, for those skilled in the art, according to the idea of the present application, the specific implementation manner and application range will be changed; in conclusion, the content of the specification should not be understood as the limitation of the present application.

Claims

1. A mobile terminal protective case, wherein, The application relates to a mobile terminal protective shell, which comprises a protective shell body provided with a containing cavity for accommodating a mobile terminal, a magnetic attraction component in a ring shape and arranged on the protective shell body, a circuit board assembly arranged on the protective shell body and located at the outer peripheral side of the magnetic attraction component, and a display screen arranged on the protective shell body and electrically connected with the circuit board assembly, and the display screen is located at the inner peripheral side of the magnetic attraction component. The area of the display screen is S1, the area of a region enclosed by the inner side edge of the magnetic attraction component is S2, and the ratio of S1 to S2 is greater than or equal to 0.

7. The magnetic attraction component is in a circular ring shape, and the display screen is in a circular shape. The outer diameter of the display screen is 44-50 mm. The display screen has a circular display area for display, and the diameter of the display area is 38-43.5 mm. The inner side edge of the magnetic attraction component is in contact with the outer side edge of the display screen.

2. The mobile terminal protective case of claim 1, wherein, The distance between the inner side edge of the magnetic attraction component and the outer side edge of the display screen is L, the outer diameter of the display screen is D, and the ratio of L to D is less than or equal to 0.

1.

3. The mobile terminal protective case of claim 2, wherein, The ratio of the outer diameter of the magnetic attraction component to the width of the mobile terminal protective shell is greater than or equal to 0.

7.

4. The mobile terminal protective case of claim 3, wherein, The protective shell body comprises a bottom wall located at one side in the thickness direction, and the mobile terminal protective shell further comprises a cover plate installed on the bottom wall.

5. The mobile terminal protective case of claim 4, wherein, The cover plate and the bottom wall form an installation groove therebetween, and the magnetic attraction component, the circuit board assembly and the display screen are arranged in the installation groove.

6. The mobile terminal protective case of claim 2, wherein, The bottom wall is provided with the installation groove, and the opening of the installation groove faces the cover plate.

7. The mobile terminal protective case of claim 2, wherein, The circuit board assembly comprises a control circuit board electrically connected with the display screen, and a radio frequency antenna electrically connected with the control circuit board, and the radio frequency antenna is used for transmitting energy and information with the mobile terminal in the containing cavity.

8. The mobile terminal protective case of claim 4, wherein, The control circuit board and the radio frequency antenna are arranged side by side on the same side of the protective shell body.

9. The mobile terminal protective case according to any one of claims 1 to 8, wherein, The radio frequency antenna comprises a QI coil, an NFC coil or a Bluetooth antenna. The radio frequency antenna comprises a coil formed by winding an enameled wire.

10. The mobile terminal protective case of claim 9, wherein, The diameter of the enameled wire is 150-230 microns.

11. The mobile terminal protective case according to any one of claims 1 to 8, wherein, The protective shell body comprises a bottom wall located at one side in the thickness direction, and the mobile terminal protective shell further comprises a cover plate installed on the bottom wall. The cover plate and the bottom wall form an installation groove therebetween, and the magnetic attraction component, the circuit board assembly and the display screen are arranged in the installation groove. The groove bottom wall of the installation groove is provided with a positioning groove, and the coil is embedded in the positioning groove.

12. The mobile terminal protective case of claim 11, wherein, The control circuit board is provided with a wiring portion, the circuit board assembly further comprises a wire, one end of the wire is connected to the wiring portion, the other end of the wire is connected to the radio frequency antenna, so that the control circuit board and the radio frequency antenna are electrically connected, and the length of the wire is greater than the distance between the wiring portion and the radio frequency antenna.

13. The mobile terminal protective case of claim 11, wherein, The display screen is an ink screen.

14. The mobile terminal protective case of claim 11, wherein, The mobile terminal protective shell is a mobile phone protective shell or a tablet computer protective shell.

15. The mobile terminal protective case of claim 14, wherein, ​ 16. The mobile terminal protective case of claim 14, wherein, ​ ​ ​ 17. The mobile terminal protective case of claim 11, wherein, ​ 18. The mobile terminal protective case according to any one of claims 1 to 8, wherein, ​ 19. The mobile terminal protective case according to any one of claims 1 to 8, wherein, ​

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