Wireless charging compatible electronic device cases

Abstract

The present application discloses an electronic device protective case compatible with wireless charging function, including a main body, a fixed magnetic attraction component and a compatible transition layer. The main body encloses to form a cavity for accommodating the electronic device. The main body includes a base layer and a filling layer arranged on the inner side of the base layer. The side of the filling layer facing away from the base layer is provided with an annular mounting groove; the fixed magnetic attraction component includes a fixed magnetic attraction part and a first magnetic attraction sheet. The fixed magnetic attraction part is annular and fixedly arranged in the annular mounting groove. The first magnetic attraction sheet is attached to the side of the fixed magnetic attraction part facing away from the base layer, and the first magnetic attraction sheet is magnetically coupled with the fixed magnetic attraction part; the first magnetic attraction sheet extends in an annular shape, and at least one insulating gap is provided on the first magnetic attraction sheet. The base layer includes an adhesive and reinforcing fibers arranged in the adhesive. The compatible transition layer is arranged between the fixed magnetic attraction part and the base layer. The present application provides a compatible transition layer to improve the structural strength of the main body while not easily generating defects such as bubbles.

Description

Technical Field

[0001] The present application relates to the technical field of portable electronic device accessories, and in particular to an electronic device protective case compatible with a wireless charging function. Background Art

[0002] At present, there are more and more portable electronic devices with wireless charging function. For example, an electric receiving coil is installed in the portable electronic device, and a corresponding electric transmitting coil is configured in the wireless charger. In order to align the two coils and keep the electric coupling distance stable during the wireless charging process, the relevant portable electronic device and the wireless charger are each provided with a magnetic suction piece, and in order to match the installation space of the coil, for example, to avoid electromagnetic interference, these magnetic suction pieces are preferably ring-shaped. In addition, in order to adapt to the mass production of magnetic suction pieces and further reduce electromagnetic interference, the magnetic suction piece is configured as a plurality of separate magnetic suction units.

[0003] From the perspective of protection or aesthetics, portable electronic devices need to be equipped with a protective shell. The protective shell is configured to increase the magnetic gap between the portable electronic device and the corresponding magnetic suction parts of the wireless charger, thereby causing the magnetic suction force to decrease. In order to compensate for the magnetic suction force, magnetic suction parts are also configured inside the protective shell. Moreover, the magnetic suction parts in the protective shell are also likely to have an adverse effect on the sensitive components of the portable electronic device, causing them to not work properly. In order to overcome the magnetic field interference of the protective shell, an improved protective shell is to add an annular iron sheet to the side of the magnetic suction part of the protective shell close to the portable electronic device. These annular iron sheets often need to have a notch, so as to prevent the formation of a current loop in the annular iron sheet during wireless charging.

[0004] However, in existing mobile phone cases equipped with magnetic suction parts and annular iron sheets, in order to prevent the two ends of the annular iron sheet from making electrical contact or forming an electrical circuit in other ways, a larger width is reserved for the gap of the annular iron sheet, but this results in a relatively poor magnetic shielding effect or uneven magnetic suction force. At the same time, bubbles or bulging caused by poor compatibility between the magnetic suction parts and the protective shell structure layer of the composite material will increase the magnetic gap and cause the annular iron sheet to deform. Therefore, the adaptability to portable electronic devices is not good enough, resulting in a poor wireless charging experience. Utility Model Content

[0005] The main purpose of the present application is to propose an electronic device protective case compatible with a wireless charging function, aiming to solve the technical problem that existing electronic device protective cases have poor adaptability to the wireless charging function.

[0006] To achieve the above-mentioned purpose, the electronic device protective case compatible with the wireless charging function proposed in the present application comprises a body, a fixed magnetic suction component and a compatible transition layer, wherein:

[0007] The body is enclosed to form a cavity for accommodating the electronic device, the body comprises a base layer and a filling layer arranged on the inner side of the base layer, and a side of the filling layer facing away from the base layer is provided with an annular mounting groove;

[0008] The fixed magnetic attraction component comprises a fixed magnetic attraction member and a first magnetic attraction sheet, the fixed magnetic attraction member is annular and fixedly arranged in the annular mounting groove, the first magnetic attraction sheet is attached to a side of the fixed magnetic attraction member away from the base layer, and the first magnetic attraction sheet is magnetically coupled to the fixed magnetic attraction member; the first magnetic attraction sheet extends in an annular shape, and at least one insulating gap is provided on the first magnetic attraction sheet;

[0009] The base layer includes an adhesive and reinforcing fibers arranged in the adhesive, the annular mounting groove is in a through shape, the compatible transition layer is arranged between the fixed magnetic attraction component and the base layer, and the compatible transition layer is fixedly connected to the fixed magnetic attraction component and the base layer respectively.

[0010] Preferably, the compatible transition layer is annular, and the vertical projection of the installation area of ​​the fixed magnetic attraction component on the plane where the compatible transition layer is located is located between the inner and outer edges of the compatible transition layer.

[0011] Preferably, the compatible transition layer includes a compatible material layer and an adhesive layer fixedly bonded to the compatible material layer, the compatible transition layer is fixedly connected to the fixed magnetic attraction component through the adhesive layer, and the compatible material layer is fixedly bonded to the base layer.

[0012] Preferably, the reinforcing fiber is glass fiber, carbon fiber or aramid fiber, and the compatible material layer is a polyimide film.

[0013] Preferably, positioning notches are formed on the outer edge of the first magnetic attraction plate on both sides of the insulating gap.

[0014] Preferably, the positioning notch is step-shaped, including a first step surface extending radially and a second step surface extending circumferentially, the first step surface extending to connect with the outer circumferential surface of the first magnetic attraction plate, and the second step surface extending to connect with the end surface of the first magnetic attraction plate.

[0015] Preferably, a side of the filling layer facing away from the base layer is provided with a tail mounting groove on the periphery of the fixed magnetic attraction component, and the electronic device protective case compatible with the wireless charging function also includes an auxiliary magnetic attraction component fixed in the tail mounting groove, and the positioning notch is arranged adjacent to the auxiliary magnetic attraction component.

[0016] Preferably, the auxiliary magnetic attraction component includes a second magnetic attraction sheet and a positioning magnetic attraction component, the positioning magnetic attraction component is fixedly arranged in the tail mounting groove, the second magnetic attraction sheet is attached to the side of the positioning magnetic attraction component facing away from the base layer, and the second magnetic attraction sheet is magnetically coupled to the positioning magnetic attraction component.

[0017] Preferably, there are a plurality of fixed magnetic components, which are arranged in a ring-shaped manner at intervals, and a mounting gap between two fixed magnetic components is aligned with the insulating gap.

[0018] Preferably, the width of the insulating gap is in the range of [0.05 mm, 1.10 mm].

[0019] The electronic device protective case compatible with the wireless charging function of the present invention adds a compatible transition layer, so that the connection between the main body and the magnetic suction part is more secure and less likely to produce defects such as bubbles. Not only does it not increase the magnetic gap of the wireless charging interface, but the first magnetic attraction sheet will not be squeezed and deformed by bubbles or hollows, causing displacement of any two adjacent ends of the first magnetic attraction sheet, so that any two adjacent ends of the first magnetic attraction sheet are not likely to touch each other, resulting in the accidental formation of a current loop. Since the insulating gap that needs to be reserved is small, the first magnetic attraction sheet has a better guiding effect on the magnetic field that fixes the magnetic suction part, so it is not easy to cause functional abnormalities of the electronic device, such as a mobile phone with a stylus function that has a disconnection fault, thereby improving the adaptability of the electronic device protective case compatible with the wireless charging function. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 This is a schematic diagram of the three-dimensional structure of the electronic device protective case compatible with the wireless charging function of the utility model;

[0022] Figure 2 for Figure 1 A schematic diagram of the local enlarged structure at point A in the middle;

[0023] Figure 3 for Figure 1 A schematic diagram of the enlarged structure of the protective case of an electronic device compatible with the wireless charging function from another angle;

[0024] Figure 4 for Figure 1 Schematic diagram of the exploded structure of the protective case of an electronic device compatible with wireless charging function;

[0025] Figure 5 for Figure 4 A schematic diagram of the enlarged structure of the first magnetic induction sheet;

[0026] Figure 6 for Figure 1 A schematic diagram of the front view structure of a protective case for an electronic device compatible with a wireless charging function;

[0027] Figure 7 for Figure 6 A schematic diagram of the local enlarged structure at B in the middle;

[0028] Figure 8 for Figure 6 Schematic diagram of the cross-sectional structure of section VIII-VIII;

[0029] Fig. 9 for Figure 8 Schematic diagram of the local enlarged structure at point C in the middle.

[0030] Description of the accompanying drawings: electronic device protective case 100, main body 10, base layer 11, filling layer 12, annular mounting groove 13, tail mounting groove 14, fixed magnetic attraction component 20, fixed magnetic attraction part 21, first magnetic attraction sheet 22, insulating gap 23, positioning notch 24, first step surface 25, second step surface 26, auxiliary magnetic attraction component 30, second magnetic attraction sheet 31, positioning magnetic attraction part 32, installation gap 33, compatible transition layer 40. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0032] Reference Figures 1 to 9 In one embodiment, the electronic device protective case 100 compatible with the wireless charging function proposed in the present application includes a body 10 and a fixed magnetic suction component 20, wherein:

[0033] The body 10 encloses a cavity for accommodating the electronic device. The body 10 includes a base layer 11 and a filling layer 12 disposed on the inner side of the base layer 11. The filling layer 12 is provided with an annular mounting groove 13 on a side facing away from the base layer 11.

[0034] The fixed magnetic attraction assembly 20 includes a fixed magnetic attraction member 21 and a first magnetic attraction sheet 22. The fixed magnetic attraction member 21 is annular and fixedly arranged in the annular mounting groove 13. The first magnetic attraction sheet 22 is attached to a side of the fixed magnetic attraction member 21 that is away from the base layer 11, and the first magnetic attraction sheet 22 is magnetically coupled to the fixed magnetic attraction member 21. The first magnetic attraction sheet 22 extends in an annular shape, and at least one insulating gap 23 is provided on the first magnetic attraction sheet 22.

[0035] The base layer 11 includes an adhesive and reinforcing fibers arranged in the adhesive. The annular mounting groove 13 is in a through shape. The electronic device protective case 100 compatible with the wireless charging function also includes a compatible transition layer 40. The compatible transition layer 40 is arranged between the fixed magnetic suction component 21 and the base layer 11. The compatible transition layer 40 is fixedly connected to the fixed magnetic suction component 21 and the base layer 11 respectively.

[0036] In this embodiment, the electronic device can be a mobile phone, a tablet computer, etc. The main body 10 can strengthen the protection of the electronic device by wrapping the electronic device, for example, to prevent the electronic device from breaking. The electronic device protective shell 100 can also fix the electronic device together by cooperating with the magnetic suction member on the bracket through the fixed magnetic suction component 20. The fixed magnetic suction member 21 can be a single magnetic suction member or an array of multiple magnetic suction members. If it is an array of multiple magnetic suction members, the orientation of the magnetic poles of each magnetic suction member can be consistent or partially reversed. In order to improve the guiding effect on the magnetic circuit, the material of the first magnetic attraction sheet 22 is preferably pure iron or low carbon steel. The base layer 11 is provided with reinforcing fibers to increase the structural strength; however, the direct fixed connection between the magnetic suction member and the base layer 11 is often prone to bubbles or hollowing problems, thereby causing the magnetic attraction force to decrease. Since the loosening of the fixed magnetic suction member 21 is likely to cause the first magnetic attraction sheet 22 to deform, such bubbles and hollowing may even cause the insulation gap 23 of the first magnetic attraction sheet 22 to disappear and short-circuit. By adding the compatible transition layer 40 , the structural strength of the main body 10 is improved while defects such as bubbles that partially increase the thickness of the main body 10 are less likely to occur.

[0037] The electronic device protective case 100 compatible with the wireless charging function of the present invention not only does not increase the magnetic gap of the wireless charging interface by adding a compatible transition layer 40, but also does not easily generate defects such as bubbles that locally increase the thickness of the main body 10 or cause the first magnetic sheet 22 to deform. Therefore, any two adjacent ends of the first magnetic sheet 22 are not easily displaced due to squeezing, so that any two adjacent ends of the first magnetic sheet 22 are not easily touched, resulting in the accidental formation of a current loop. Since the insulating gap 23 that needs to be reserved is small, the first magnetic sheet 22 has a better guiding effect on the magnetic field of the fixed magnetic suction member 21, so it is not easy to cause functional abnormalities of the electronic device, such as a mobile phone with a stylus function that has a disconnection fault, thereby improving the adaptability of the electronic device protective case 100 compatible with the wireless charging function.

[0038] Furthermore, the compatible transition layer 40 is annular, and the vertical projection of the installation area of ​​the fixed magnetic attraction component 21 on the plane where the compatible transition layer 40 is located is located between the inner and outer edges of the compatible transition layer 40 .

[0039] In this embodiment, such a compatible transition layer 40 can completely isolate the fixed magnetic element 21 from the base layer 11, thereby further reducing the risk of generating bubbles or hollows.

[0040] Furthermore, the compatible transition layer 40 includes a compatible material layer and an adhesive layer fixedly bonded to the compatible material layer. The compatible transition layer 40 is fixedly connected to the fixed magnetic attraction component 21 through the adhesive layer, and the compatible material layer is fixedly bonded to the base layer 11 .

[0041] In this embodiment, the compatible transition layer 40 is fixed to the fixed magnetic component 21 via the adhesive layer to achieve pre-installation, that is, the compatible transition layer 40 can be installed on the base layer 11 together with the fixed magnetic component 20 .

[0042] Furthermore, the reinforcing fiber is glass fiber or carbon fiber or aramid fiber, so that the body 10 can be thinner and lighter under the condition of certain structural strength. The compatible material layer is a polyimide film, so that a good combination of the pre-base layer 11 can be achieved.

[0043] The outer edge of the first magnetizing sheet 22 is formed with positioning notches 24 on both sides of the insulating gap 23. By providing the positioning notches 24 on the outer edge of the first magnetizing sheet, it is convenient to process the open gap 23 with a smaller width; and due to the limiting effect of the positioning notches 24, the two ends of the first magnetizing sheet 22 are also not likely to touch each other, resulting in the accidental formation of a current loop.

[0044] Furthermore, the positioning notch 24 is step-shaped, including a first step surface 25 extending radially and a second step surface 26 extending circumferentially. The first step surface 25 extends to connect with the outer peripheral surface of the first magnetic attraction plate 22, and the second step surface 26 extends to connect with the end surface of the first magnetic attraction plate 22.

[0045] In this embodiment, the positioning notches 24 on both sides face each other and are connected through the insulating gap 23, so that positioning can be achieved by extending a positioning mold into the two positioning notches 24. In addition, since the positioning notches 24 have step surfaces extending in the radial and circumferential directions, the positioning notches 24 can better achieve radial and circumferential positioning.

[0046] Furthermore, a side of the filling layer 12 facing away from the base layer 11 is provided with a tail mounting groove 14 on the periphery of the fixed magnetic attraction component 20, and the electronic device protective case 100 compatible with the wireless charging function also includes an auxiliary magnetic attraction component 32 fixed in the tail mounting groove 14, and the positioning notch 24 is arranged adjacent to the auxiliary magnetic attraction component 32. In this way, it is convenient to press the auxiliary magnetic attraction component 32 while positioning the first magnetic attraction sheet 22. The function of the auxiliary magnetic attraction component 32 is to auxiliary prevent the electronic device protective case 100 compatible with the wireless charging function from deviating from the preset position during the adsorption process.

[0047] Furthermore, the auxiliary magnetic attraction component 32 includes a second magnetic attraction sheet 31 and a positioning magnetic attraction piece 32. The positioning magnetic attraction piece 32 is fixedly arranged in the tail mounting groove 14. The second magnetic attraction sheet 31 is attached to the side of the positioning magnetic attraction piece 32 facing away from the base layer 11, and the second magnetic attraction sheet 31 is magnetically coupled to the positioning magnetic attraction piece 32.

[0048] In this embodiment, the second magnetic attraction sheet 31 is provided to prevent the magnetic field generated by the positioning magnetic attraction member 32 from causing excessive interference to the target electronic device.

[0049] Furthermore, there are multiple fixed magnetic components 21 , and the multiple fixed magnetic components 21 are arranged in a ring shape at intervals, wherein the installation gap 33 between two fixed magnetic components 21 is aligned with the insulating gap 23 .

[0050] In this embodiment, multiple fixed magnetic components 21 are provided, which is convenient for production and manufacturing. Multiple fixed magnetic components 21 are arranged at intervals to form multiple parallel magnetic circuits, and it is convenient to arrange the magnetic pole directions of the fixed magnetic components 21 separately. By aligning the installation gap 33 with the insulating gap 23, the magnetic field guiding effect of the first magnetic attraction sheet can be further improved, and the interference of the magnetic field of the fixed magnetic component 21 on the target electronic device can be reduced.

[0051] Furthermore, the width of the insulating gap 23 is in the range of [0.05 mm, 1.10 mm]. In this embodiment, the insulating gap 23 is easy to manufacture, can achieve a good magnetic field guiding effect, and is not prone to accidental touch or other forms of current loops.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. An electronic device protective case compatible with wireless charging function, characterized in that: It includes a body fixed magnetic attraction component and a compatible transition layer, wherein: The body is enclosed to form a cavity for accommodating the electronic device, the body comprises a base layer and a filling layer arranged on the inner side of the base layer, and a side of the filling layer facing away from the base layer is provided with an annular mounting groove; The fixed magnetic attraction component comprises a fixed magnetic attraction member and a first magnetic attraction sheet, the fixed magnetic attraction member is annular and fixedly arranged in the annular mounting groove, the first magnetic attraction sheet is attached to a side of the fixed magnetic attraction member away from the base layer, and the first magnetic attraction sheet is magnetically coupled to the fixed magnetic attraction member; the first magnetic attraction sheet extends in an annular shape, and at least one insulating gap is provided on the first magnetic attraction sheet; The base layer includes an adhesive and reinforcing fibers arranged in the adhesive, the annular mounting groove is in a through shape, the compatible transition layer is arranged between the fixed magnetic attraction component and the base layer, and the compatible transition layer is fixedly connected to the fixed magnetic attraction component and the base layer respectively.

2. The electronic device protective case compatible with wireless charging function as claimed in claim 1, characterized in that: The compatible transition layer is annular, and the vertical projection of the installation area of ​​the fixed magnetic attraction component on the plane where the compatible transition layer is located is located between the inner and outer edges of the compatible transition layer.

3. The electronic device protective case compatible with wireless charging function as claimed in claim 1 or 2, characterized in that: The compatible transition layer includes a compatible material layer and a back adhesive layer fixedly bonded to the compatible material layer. The compatible transition layer is fixedly connected to the fixed magnetic attraction component through the back adhesive layer, and the compatible material layer is fixedly bonded to the base layer.

4. The electronic device protective case compatible with wireless charging function as claimed in claim 3, characterized in that: The reinforcing fiber is glass fiber, carbon fiber or aramid fiber, and the compatible material layer is a polyimide film.

5. The electronic device protective case compatible with wireless charging function as claimed in claim 1, characterized in that: The outer edge of the first magnetic attraction piece is respectively formed with positioning notches on both sides of the insulating gap.

6. The electronic device protective case compatible with wireless charging function as claimed in claim 5, characterized in that: The positioning notch is step-shaped, including a first step surface extending radially and a second step surface extending circumferentially, the first step surface extends to connect with the outer circumferential surface of the first magnetic attraction plate, and the second step surface extends to connect with the end surface of the first magnetic attraction plate.

7. The electronic device protective case compatible with wireless charging function as claimed in claim 5 or 6, characterized in that: A side of the filling layer facing away from the base layer is provided with a tail mounting groove on the periphery of the fixed magnetic attraction component, and the electronic device protective case compatible with the wireless charging function also includes an auxiliary magnetic attraction component fixed in the tail mounting groove, and the positioning notch is arranged adjacent to the auxiliary magnetic attraction component.

8. The electronic device protective case compatible with wireless charging function as claimed in claim 7, characterized in that: The auxiliary magnetic attraction component includes a second magnetic attraction sheet and a positioning magnetic attraction component. The positioning magnetic attraction component is fixedly arranged in the tail mounting groove. The second magnetic attraction sheet is attached to the side of the positioning magnetic attraction component facing away from the base layer, and the second magnetic attraction sheet is magnetically coupled to the positioning magnetic attraction component.

9. The electronic device protective case compatible with wireless charging function as claimed in claim 5 or 6, characterized in that: There are multiple fixed magnetic components, which are arranged in a ring shape and at intervals, and the installation gap between two fixed magnetic components is aligned with the insulating gap.

10. The electronic device protective case compatible with wireless charging function according to any one of claims 1, 2, 5, and 6, characterized in that: The width range of the insulation gap is [0.05mm, 1.10mm].

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