Magnetic structure and protective case

Abstract

This utility model provides a magnetic attraction structure and a protective shell. The magnetic attraction structure includes: a shell with a mounting groove; and a magnetic attraction body installed in the mounting groove. The magnetic attraction body includes a main magnetic attraction component and a positioning magnet, the positioning magnet being arranged circumferentially with the main magnetic attraction component. The main magnetic attraction component includes an inner ring portion and an outer ring portion arranged radially along the magnetic attraction body, the magnetic poles of the outer ring portion and the inner ring portion being opposite. The magnetic attraction body includes a first surface and a second surface disposed opposite to each other, the magnetic pole of the main magnetic attraction component located on the second surface being opposite to the magnetic pole of the positioning magnet located on the second surface. This embodiment, by setting the main magnetic attraction component, can reduce the impact on wireless charging, enhance the attraction force between the protective shell and the wireless charging bank, and solve the problem of the bracket tilting due to magnetic repulsion.

Description

Technical Field

[0001] This utility model relates to the field of electronic device accessories technology, and in particular to a magnetic structure and protective shell. Background Technology

[0002] With the widespread adoption of smart electronic devices, magnetic protective cases (such as phone stand cases) are widely used due to their convenient accessory connection capabilities. These cases typically have built-in magnetic components that allow for quick device fixation and wireless charging alignment through magnetic attraction with peripherals such as wireless chargers (TX end). However, the traditional magnetic module used in stand cases results in the same magnetic field strength facing both the wireless charger (TX end) and the electronic device being charged (RX end) (e.g., ...). Figure 1 As shown in the diagram, if the magnetic attraction is too weak, the magnetic component will have little attraction to the wireless charger, resulting in poor stability; if the magnetic attraction is too strong, it will affect the charging efficiency of the electronic device being charged. If the magnetic units of the magnetic structure are specially arranged using the Helbeck principle, so that the magnetic field direction of the magnetic component is opposite to that of the wireless charger and other accessories, but the same as that of the electronic device being charged, the magnetism of the magnetic component facing the wireless charger and other accessories will be enhanced, while the magnetism of the side facing the electronic device will be weakened. However, when the bracket / protective shell is placed on the electronic device, because the magnetic poles of the magnetic component and the magnetic structure inside the electronic device are in the same direction, a continuous repulsive force is generated between them when the bracket is in the retracted state. This causes the bracket to unexpectedly tilt relative to the protective shell, affecting the normal use of the product and the user experience. Utility Model Content

[0003] To address at least some of the shortcomings or deficiencies in the prior art, embodiments of this utility model provide a magnetic attraction structure and protective case. By incorporating a main magnetic attraction component and a positioning magnet, the magnetic flux of the main magnetic attraction component facing the electronic device to be charged can be reduced to minimize its impact on wireless charging and improve wireless charging efficiency. Simultaneously, the magnetic flux facing the magnetic peripheral can be enhanced to strengthen the magnetic attraction with magnetic peripherals such as wireless power banks. Furthermore, when the stand is in its retracted state, the problem of the stand tilting due to magnetic repulsion is resolved, ensuring the normal use of the stand and protective case and improving the user experience.

[0004] On one hand, the present invention provides a magnetic attraction structure, comprising: a housing having an installation groove thereon; and a magnetic attraction body installed in the installation groove; the magnetic attraction body includes a main magnetic attraction component and a positioning magnet, the positioning magnet being arranged circumferentially with the main magnetic attraction component; the main magnetic attraction component includes an inner ring portion and an outer ring portion arranged along the radial direction of the magnetic attraction body, the magnetic poles of the outer ring portion and the inner ring portion being opposite; wherein, the magnetic attraction body includes a first surface and a second surface disposed opposite to each other, the magnetic pole of the main magnetic attraction component located on the second surface being opposite to the magnetic pole of the positioning magnet located on the second surface.

[0005] In some embodiments, the positioning magnet includes a first magnetic part and a second magnetic part arranged in the radial direction of the magnetic body, the first magnetic part and the second magnetic part being arranged circumferentially with the inner ring part and the outer ring part, respectively.

[0006] In some embodiments, the first magnetic part and the second magnetic part are integrally formed, and the first magnetic part and the second magnetic part are single magnetic poles with opposite polarities.

[0007] In some embodiments, the magnetic poles on the first magnetic part located on the second surface are opposite to the magnetic poles on the first surface, the magnetic poles on the second magnetic part located on the second surface are opposite to the magnetic poles on the first surface, and the magnetic poles on the second magnetic part located on the second surface are opposite to the magnetic poles on the first magnetic part located on the second surface.

[0008] In some embodiments, the main magnetic attraction component has an arc-shaped structure and includes multiple magnetic attraction units. The multiple magnetic attraction units are arranged to form the main magnetic attraction component. The ends of the multiple magnetic attraction units near the inner circumference of the main magnetic attraction component together form the inner ring portion, and the ends of the multiple magnetic attraction units near the outer circumference of the main magnetic attraction component together form the outer ring portion.

[0009] In some embodiments, the main magnetic attraction assembly includes a first sub-magnetic attraction unit and a second sub-magnetic attraction unit arranged radially along the magnetic attraction body, wherein the magnetic poles of the first sub-magnetic attraction unit and the second sub-magnetic attraction unit are opposite at their respective ends; the first sub-magnetic attraction unit is disposed near the inner circumference of the main magnetic attraction assembly, and the end of the first sub-magnetic attraction unit away from the second sub-magnetic attraction unit forms the inner ring portion; the second sub-magnetic attraction unit is disposed near the outer circumference of the main magnetic attraction assembly, and the end of the second sub-magnetic attraction unit away from the first sub-magnetic attraction unit forms the outer ring portion.

[0010] In some embodiments, the magnetic structure is a three-layer structure, which consists of the housing, the magnetic body, and the cover plate, with the cover plate located on the housing and covering the mounting groove.

[0011] On the other hand, this utility model embodiment provides a protective shell, including: a protective shell body, including a back plate and side frames connected to the periphery of the back plate, the back plate and the side frames forming an accommodating space; a bracket, rotatably connected to the back plate on the side opposite to the accommodating space via a connector; and a magnetic body located on the bracket; the magnetic body includes a main magnetic component and a positioning magnet, the positioning magnet and the main magnetic component being arranged circumferentially; the main magnetic component includes an inner ring portion and an outer ring portion arranged along the radial direction of the magnetic body, the magnetic poles of the outer ring portion and the inner ring portion being opposite; wherein, the magnetic pole of the main magnetic component facing the back plate is opposite to the magnetic pole of the positioning magnet facing the back plate.

[0012] In some embodiments, the positioning magnet is located at the end of the magnetic body away from the connector.

[0013] In some embodiments, two positioning magnets are provided, and the main magnetic attraction assembly includes arc-shaped structures respectively disposed on both sides of the connector, with the two positioning magnets respectively disposed at the ends of the arc-shaped structures away from the connector.

[0014] In some embodiments, the main magnetic assembly includes a first end near the connector and a second end away from the connector, and the positioning magnet is disposed between the first end and the second end.

[0015] As can be seen from the above, the technical features of this utility model can have one or more of the following beneficial effects: The magnetic attraction structure provided by the embodiment of this utility model adopts a radially magnetized main magnetic attraction component, so that the main magnetic attraction component, the magnetic attraction module of the electronic device to be charged, and the magnetic attraction peripherals form a Heilbeck array. This can reduce the magnetic flux of the magnetic body facing the electronic device to be charged to reduce the impact on wireless charging and improve the wireless charging efficiency; it can also enhance the magnetic flux facing the magnetic attraction peripherals to enhance the attraction force with magnetic attraction peripherals such as wireless power banks; the use of positioning magnets ensures that the bracket will not tilt relative to the protective shell when the bracket is in the storage state, ensuring the normal use of the bracket and protective shell and improving the user experience.

[0016] Another embodiment of this utility model provides a protective case with the aforementioned magnetic component, which can reduce the impact on wireless charging, enhance the attraction between the protective case and the wireless power bank, and ensure that the stand is in the storage state, thus solving the problem of the stand tilting due to magnetic repulsion and improving the user experience. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a diagram showing the magnetic field line distribution of a magnetic attraction structure in the prior art.

[0019] Figure 2 A magnetic field line distribution diagram of a magnetic attraction structure provided by this utility model.

[0020] Figure 3 This is an exploded structural diagram of a magnetic attraction structure provided by this utility model.

[0021] Figure 4 This is a schematic diagram of the magnetic body in a magnetic structure provided by this utility model.

[0022] Figure 5 A planar schematic diagram of the first surface of the magnetic body in a magnetic structure provided by this utility model.

[0023] Figure 6 for Figure 5 A planar schematic diagram of the second surface of the magnetic body in a magnetic attraction structure is shown.

[0024] Figure 7 A planar schematic diagram of the first surface of another magnetic body in a magnetic structure provided by this utility model.

[0025] Figure 8 for Figure 7 A planar schematic diagram of the second surface of another annular magnetic component in a magnetic attraction structure is shown.

[0026] Figure 9 for Figure 5 The diagram shows the structure of the magnetic suction unit.

[0027] Figure 10 for Figure 5 The diagram shows the structure of the positioning magnet.

[0028] Figure 11 A planar schematic diagram of the first surface of another magnetic body in a magnetic structure provided by this utility model.

[0029] Figure 12 for Figure 11 A planar schematic diagram of the second surface of another magnetic body in a magnetic attraction structure is shown.

[0030] Figure 13 A planar schematic diagram of the first surface of another magnetic body in a magnetic structure provided by this utility model.

[0031] Figure 14 for Figure 13 A planar schematic diagram of the second surface angle of another magnetic body in a magnetic attraction structure is shown.

[0032] Figure 15 for Figure 11 The structural diagram of the first and second sub-magnetic units in the diagram.

[0033] Figure 16 This is a schematic diagram of the structure of a magnetic protective shell provided for another embodiment of the present invention.

[0034] Figure label:

[0035] 10. Housing; 110. Mounting slot; 20. Magnetic body; 210. First surface; 220. Second surface; 230. Main magnetic assembly; 231. Inner ring; 232. Outer ring; 233. First sub-magnetic unit; 234. Second sub-magnetic unit; 235. Magnetic unit; 240. Positioning magnet; 241. First magnetic part; 242. Second magnetic part; 40. Cover plate; 50. Protective housing body; 510. Back plate; 520. Side frame; 60. Bracket; 610. Connector; 70. Magnetic module; 80. Magnetic peripheral. Detailed Implementation

[0036] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0037] See Figure 2 and Figure 3This utility model provides a magnetic attraction structure that can be applied to accessories for electronic devices such as mobile phone cases, car mounts, wireless chargers, and card holders to enhance magnetic adhesion. The magnetic attraction structure includes a housing 10 and a magnetic body 20. The housing 10 has a mounting groove 110, and the magnetic body 20 is installed within the mounting groove 110. The magnetic body 20 includes a main magnetic attraction component 230 and a positioning magnet 240, with the positioning magnet 240 arranged circumferentially with the main magnetic attraction component 230. The main magnetic attraction component 230 includes an inner ring portion 231 and an outer ring portion 232 arranged radially along the magnetic body 20, with the outer ring portion 232 and the inner ring portion 231 having opposite magnetic poles. That is, the magnetic polarity orientation (or magnetization method) of the inner ring portion 231 and the outer ring portion 232 is perpendicular to the radial direction of the main magnetic attraction assembly 230, and the magnetization direction of the main magnetic attraction assembly 230 is the radial magnetization direction (i.e., the magnetic field direction extends along the radius of the ring), so that the N pole and S pole are distributed in the inner and outer ring regions of the same annular surface, rather than the upper and lower surfaces of traditional axial magnetization. For example, Figure 4 As shown in the figure, the dashed line is the dividing line between the inner circle 231 and the outer circle 232. The inner circle 231 is, for example, the part of the dashed line that is close to the center of the circumference where the main magnetic attraction component 230 is located, and the outer circle 232 is, for example, the part of the dashed line that is far away from the center of the circumference where the main magnetic attraction component 230 is located.

[0038] In this device, the magnetic module 70 in the electronic device to be charged is radially magnetized. The magnetic poles of the magnetic module 70 and the main magnetic assembly 230 at their closest points are the same, while the magnetic peripheral 80 and the main magnetic assembly 230 at their closest points have opposite magnetic poles. A Hale-Becker effect is formed among the three components. (Refer to...) Figure 2 The magnetic field line distribution diagram shows that the magnetic flux on the lower surface is greater than that on the upper surface. That is, the magnetic flux between the main magnetic attraction component 230 and the magnetic peripheral device 80 is greater than the magnetic flux between the main magnetic attraction component 230 and the magnetic attraction module 70 in the electronic device to be charged. This causes the magnetic field lines to concentrate at the end facing the magnetic peripheral device 80. The denser the magnetic field lines, the stronger the magnetic attraction, thus increasing the magnetic attraction between the magnetic structure and the magnetic peripheral device 80. Compared to... Figure 1 Compared with existing magnetic components with the same magnetic flux on both sides, the magnetic structure provided in this embodiment can reduce the magnetic flux at one end of the electronic device to be charged to reduce the impact on wireless charging and improve wireless charging efficiency; and can also enhance the magnetic flux at one end of the magnetic peripheral 80 to enhance the magnetic attraction between the magnetic peripheral 80 and other magnetic peripherals such as wireless power banks.

[0039] Further, see Figures 4-8 ,as well as Figures 11-14The magnetic body 20 includes a first surface 210 and a second surface 220 disposed opposite to each other. The magnetic pole of the main magnetic component 230 located on the second surface 220 is opposite to the magnetic pole of the positioning magnet 240 located on the second surface 220. The side of the magnetic body 20 facing the bottom of the mounting groove 110 is the first surface 210, and the side of the magnetic body 20 away from the bottom of the mounting groove 110 is the second surface 220. That is, when both the main magnetic component 230 and the positioning magnet 240 are installed in the mounting groove 110, the surfaces of the main magnetic component 230 and the positioning magnet 240 facing the bottom of the mounting groove 110 belong to the first surface 210, and the surfaces of the main magnetic component 230 and the positioning magnet 240 away from the bottom of the mounting groove 110 belong to the second surface 220. When the magnetic body 20 is installed on the bracket 60 of the protective shell, the first surface 210 faces the wireless charging end, and the second surface 220 faces the electronic device to be charged.

[0040] Specifically, since the main magnetic component 230 uses radial magnetization and its magnetic pole direction is the same as that of the magnetic module 70 in the electronic device to be charged, the bracket 60 will tilt relative to the protective shell body 50 due to the repulsive force between the main magnetic component 230 and the magnetic module 70. This solution provides a positioning magnet 240 within the mounting slot 110. The positioning magnet 240 and the magnetic module 70 have opposite magnetic poles at their closest points. Through the magnetic attraction between the positioning magnet 240 and the magnetic module 70, the bracket 60 is secured to the protective shell body 50 when in its retracted state, thus preventing the bracket 60 from tilting due to the repulsive force between the main magnetic component 230 and the magnetic module 70. This ensures the normal use of the protective shell and improves the user experience. The bracket 60 can be made of materials such as PC, which reduces the overall thickness, facilitating a thinner design for the bracket and protective shell, and also reduces the distance between the electronic device to be charged and the wireless charging terminal, improving wireless charging efficiency.

[0041] In this configuration, the magnetic poles on the second surface 220 of the inner ring portion 231 are the same as those on the first surface 210 of the inner ring portion 231, and the magnetic poles on the second surface 220 of the outer ring portion 232 are the same as those on the first surface 210 of the inner ring portion 231; for example, the magnetic pole of the inner ring portion 231 of the main magnetic attraction assembly 230 is the S pole, and the magnetic pole of the outer ring portion 232 is the N pole (e.g., Figure 5 , Figure 6 , Figure 11 and Figure 12 ); or for example, the inner ring 231 of the main magnetic attraction assembly 230 has a N pole and the outer ring 232 has a S pole (e.g. Figure 7 , Figure 8 , Figure 13 and Figure 14 ).

[0042] In the existing technology, axial magnetization is used, which requires magnetization of different magnetic poles on the same magnet, that is, four magnetic poles are set on one magnet, which is complicated and costly. The main magnetic attraction component 230 of this device adopts axial magnetization, which simplifies magnetization and reduces costs.

[0043] The magnetization operation of the main magnetic attraction component 230 can be performed before or after it is inserted into the mounting slot 110, preferably after it is inserted into the mounting slot 110.

[0044] See Figure 3 and Figure 4 In some embodiments, the positioning magnet 240 includes a first magnetic part 241 and a second magnetic part 242 arranged in the radial direction of the magnetic body 20. The first magnetic part 241 and the second magnetic part 242 are arranged in the same circumference as the inner ring part 231 and the outer ring part 232, respectively. For example, the first magnetic part 241 is closer to the inner ring part 231, and the second magnetic part 242 is closer to the outer ring part 232.

[0045] In one embodiment, the positioning magnet 240 is magnetized radially (not shown in the figure), the first magnetic part 241 and the second magnetic part 242 are integrally formed, and the first magnetic part 241 and the second magnetic part 242 are single magnetic poles with opposite polarities. That is, the magnetic poles on the first surface 210 of the first magnetic part 241 are the same as those on the second surface 220, and the magnetic poles on the first surface 210 of the second magnetic part 242 are the same as those on the second surface 220. The magnetic poles on the first surface 210 of the first magnetic part 241 and the magnetic poles on the second surface 220 of the second magnetic part 242 are opposite. In other words, the magnetic polarity orientation (or magnetization method) of the first magnetic part 241 and the second magnetic part 242 is radial along the magnetic body 20, and the magnetization direction of the first magnetic part 241 and the second magnetic part 242 is radial (i.e., the magnetic field direction extends along the annular radius). This results in the N pole and S pole being distributed in the inner and outer ring regions of the same annular surface (top or bottom surface), rather than the traditional axially magnetized upper and lower surfaces. In this configuration, the positioning magnet 240 can attract electronic devices to be charged, but there is a repulsive force between it and magnetic peripherals 80 such as wireless charging banks.

[0046] Among them, see Figure 10In another embodiment, to enable the positioning magnet 240 to simultaneously attract both the electronic device to be charged and the wireless power bank, the positioning magnet 240 is an axially magnetized composite magnet. The magnetic poles on the second surface 220 of the first magnetic part 241 are opposite to those on the first surface 210, and the magnetic poles on the second surface 220 of the second magnetic part 242 are opposite to those on the first surface 210. Furthermore, the magnetic poles on the second surface 220 of the second magnetic part 242 are opposite to those on the first magnetic part 241. That is, the magnetic polarity orientation (or magnetization method) of the first magnetic part 241 and the second magnetic part 242 are along the axial direction of the magnetic body 20, and their magnetic poles on the same surface (both on the first surface 210 or both on the second surface 220) are opposite, meaning their magnetic polarity orientation (or magnetization direction) is opposite.

[0047] See Figures 4-9 In some embodiments, the main magnetic absorbing assembly 230 has an arc-shaped structure and includes multiple magnetic absorbing units 235. These multiple magnetic absorbing units 235 are arranged to form the main magnetic absorbing assembly 230. The ends of the multiple magnetic absorbing units 235 near the inner circumference of the main magnetic absorbing assembly 230 together form an inner ring portion 231, and the ends of the multiple magnetic absorbing units 235 near the outer circumference of the main magnetic absorbing assembly 230 together form an outer ring portion 232. Setting the main magnetic absorbing assembly 230 as multiple magnetic absorbing units 235 can reduce the volume of a single magnet, reduce the probability of magnet breakage during production, and reduce increased costs due to magnet breakage. For example, the multiple magnetic absorbing units 235 may be of the same shape and size, facilitating mass production and replacement. Each magnetic absorbing unit 235 may be, for example, a fan-shaped columnar structure, for easy spacing to form the main magnetic absorbing assembly 230. The magnetic absorbing unit 235 may also consist of two sub-magnetic absorbing units, arranged radially along the magnetic absorbing body 20, with opposite magnetic poles at their opposite ends. When installing the main magnetic attraction component 230 in the mounting slot 110, multiple magnetic attraction units 235 can be arranged first and glued together before being installed in the mounting slot 110.

[0048] Furthermore, the mounting slot 110 includes multiple sub-mounting slots, which are arranged at intervals along the circumference of the housing 10. Each magnetic unit 235 is correspondingly disposed in one sub-mounting slot. Since the magnetic unit 235 is also a radial magnet, a repulsive force will be generated between two adjacent magnetic units 235, causing the positions of multiple magnetic units 235 to shift. Therefore, multiple sub-mounting slots are provided to limit the position of each magnetic unit 235 in one sub-mounting slot, preventing the position of the magnetic unit 235 from shifting and affecting the magnetic attraction effect of the main magnetic assembly 230.

[0049] See Figures 11-15In some embodiments, the main magnetic absorbing assembly 230 includes a first sub-magnetic absorbing unit 233 and a second sub-magnetic absorbing unit 234 arranged radially along the magnetic absorbing body 20. The magnetic poles of the first sub-magnetic absorbing unit 233 and the second sub-magnetic absorbing unit 234 at their closest points are opposite. The first sub-magnetic absorbing unit 233 is disposed near the inner circumference of the main magnetic absorbing assembly 230, and its end away from the second sub-magnetic absorbing unit 234 forms an inner ring portion 231. The second sub-magnetic absorbing unit 234 is disposed near the outer circumference of the main magnetic absorbing assembly 230, and its end away from the first sub-magnetic absorbing unit 233 forms an outer ring portion 232. Dividing the magnetic absorbing body 20 into the first sub-magnetic absorbing unit 233 and the second sub-magnetic absorbing unit 234 can reduce the volume of a single magnet, reduce the probability of magnet breakage during production, and reduce the increased costs caused by magnet breakage. The first sub-magnetic absorbing unit 233 and the second sub-magnetic absorbing unit 234 are arranged radially along the magnetic absorbing body 20.

[0050] See Figure 3 In some embodiments, the magnetic attraction structure is a three-layer structure, consisting of a housing 10, a magnetic body 20, and a cover plate 40. The cover plate 40 is located on the housing 10 and covers the mounting groove 110. The cover plate 40 limits the magnetic body 20, preventing it from falling out of the mounting groove 110 during use, i.e., preventing the main magnetic assembly 230 and the positioning magnet 240 from falling out of the mounting groove 110 during use. In the prior art, there is an iron sheet between the cover plate 40 and the axially magnetized magnet to prevent the magnetic induction lines of the magnet from penetrating into the electronic device to be charged, and to enhance the magnetic attraction force on the side away from the electronic device to be charged. In this solution, there is no iron sheet between the composite axial magnet positioning magnet 240 and the cover plate 40, ensuring that the positioning magnet 240 is thinner and lighter under the same magnetic attraction force as the prior art solution; and that the positioning magnet 240 is thicker at the same thickness as the prior art solution, providing a stronger magnetic attraction force. The cover plate 40 is made of, for example, a non-metallic material.

[0051] See Figure 16Another embodiment of this utility model provides a protective shell, including a protective shell body 50, a bracket 60, and a magnetic body 20. The protective shell body 50 includes a back plate 510 and side frames 520 connected around the back plate 510. The back plate 510 and side frames 520 enclose a receiving space, in which an electronic device to be charged can be installed. The bracket 60 is rotatably connected to the side of the back plate 510 facing away from the receiving space via a connector 610. The magnetic body 20 is located on the bracket 60. The magnetic body 20 includes a main magnetic assembly 230 and a positioning magnet 240, with the positioning magnet 240 arranged circumferentially with the main magnetic assembly 230. The main magnetic assembly 230 includes an inner ring portion 231 and an outer ring portion 232 arranged radially along the magnetic body 20, with the magnetic poles of the outer ring portion 232 and the inner ring portion 231 opposite. The magnetic poles of the main magnetic attraction assembly 230 facing the back plate 510 are opposite to those of the positioning magnet 240 facing the back plate 510.

[0052] Specifically, the main magnetic component 230 is radially magnetized. In practical applications, the main magnetic component 230 and the magnetic module 70 in the electronic device to be charged have the same magnetic poles. The main magnetic component 230 and the magnetic peripheral device 80 are opposite in their relative proximity. The main magnetic component 230, the magnetic peripheral device 80, and the magnetic module 70 of the electronic device to be charged form a Hellbeck array, which makes the magnetic field strength on the two sides of the main magnetic component 230 facing the magnetic peripheral device 80 and facing the magnetic module 70 different. That is, the magnetic field between the main magnetic component 230 and the magnetic module 70 in the electronic device to be charged is weaker, reducing the impact of the magnetic field on the charging of the electronic device to be charged. The magnetic field strength between the main magnetic component 230 and the magnetic peripheral device 80 such as the wireless power bank is stronger, which enhances the attraction force between the main magnetic component 230 and the magnetic peripheral device 80, ensuring the stability between the magnetic peripheral device 80 and the electronic device to be charged during the charging process.

[0053] Furthermore, the magnetic poles of the main magnetic assembly 230 facing the back plate 510 are opposite to those of the positioning magnet 240 facing the back plate 510. The attraction between the positioning magnet 240 and the magnetic module 70 ensures that the bracket 60 can be fixed on the protective shell body 50 when not in use, preventing the bracket 60 from tilting due to the repulsive force between the magnetic body 20 and the magnetic module 70 of the electronic device to be charged, thus improving the user experience. Specifically, the magnetic body 20 and the magnetic module 70 generate a repulsive force F1 moving away from the protective shell body 50, while the positioning magnet 240 and the magnetic module 70 generate an attractive force F2 moving closer to the protective shell body 50. The resultant force of the repulsive force F1 and the attractive force F2 points towards the protective shell body 50, ensuring that the bracket 60 is stably closed. At the same time, attention should be paid to the relationship between the repulsive force F1 and the attractive force F2 to avoid excessive attraction that would make it difficult for the bracket 60 to unfold.

[0054] A groove can be provided on the bracket 60, and the magnetic body 20 is placed in the groove. The depth of the groove is equal to the thickness of the magnetic body 20, thereby reducing the overall thickness of the protective shell.

[0055] The surface of the magnetic body 20 that is away from the back plate 510 is the first surface 210, and the surface facing the back plate 510 is the second surface 220. That is, the surfaces of the main magnetic assembly 230 and the positioning magnet 240 that are away from the back plate 510 belong to the first surface 210, and the surfaces of the main magnetic assembly 230 and the positioning magnet 240 that face the back plate 510 belong to the second surface 220.

[0056] In some embodiments, the positioning magnet 240 is located at the end of the magnetic body 20 away from the connector 610. Based on the lever principle, when the torque is at its maximum, a small force can be applied to achieve adsorption and fixation.

[0057] Furthermore, for example, two positioning magnets 240 are provided. The main magnetic attraction assembly 230 includes arc-shaped structures respectively disposed on both sides of the connector 610. The two positioning magnets 240 are respectively disposed at the ends of the arc-shaped structures away from the connector 610, which further enhances the attraction force between the positioning magnets 240 and the magnetic attraction module 70, ensuring that the bracket 60 will not tilt relative to the protective shell body 50 during use.

[0058] In some embodiments, the main magnetic traction assembly 230 includes a first end near the connector 610 and a second end away from the connector 610, and a positioning magnet 240 is disposed between the first end and the second end. Further, for example, two positioning magnets 240 are provided, and the main magnetic traction assembly 230 includes arc-shaped structures respectively disposed on both sides of the connector 610, and the two positioning magnets 240 can be respectively disposed in the middle region of the two arc-shaped structures.

[0059] It should be noted that the terms "first," "second," "third," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that the embodiments of the utility model described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0060] Furthermore, it is understood that the foregoing embodiments are merely illustrative examples of this utility model. Provided that the technical features do not conflict, the structure is not contradictory, and the purpose of this utility model is not violated, the technical solutions of the various embodiments can be arbitrarily combined and used.

[0061] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions 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 this utility model.

Claims

1. A magnetic attraction structure, characterized by, include: The housing (10) has a mounting groove (110) on it; as well as A magnetic body (20) is installed in the mounting groove (110); the magnetic body (20) includes a main magnetic assembly (230) and a positioning magnet (240), the positioning magnet (240) and the main magnetic assembly (230) are arranged in the same circumference; the main magnetic assembly (230) includes an inner ring portion (231) and an outer ring portion (232) arranged in the radial direction of the magnetic body (20), the magnetic poles of the outer ring portion (232) and the inner ring portion (231) are opposite; The magnetic body (20) includes a first surface (210) and a second surface (220) arranged opposite to each other. The magnetic pole of the main magnetic assembly (230) located on the second surface (220) is opposite to the magnetic pole of the positioning magnet (240) located on the second surface (220).

2. The magnetic attraction structure of claim 1, wherein, The positioning magnet (240) includes a first magnetic part (241) and a second magnetic part (242) arranged in the radial direction of the magnetic body (20), and the first magnetic part (241) and the second magnetic part (242) are arranged in the same circumference as the inner ring part (231) and the outer ring part (232), respectively.

3. The magnetic attraction structure of claim 2, wherein, The first magnetic part (241) and the second magnetic part (242) are integrally formed, and the first magnetic part (241) and the second magnetic part (242) are single magnetic poles with opposite polarities.

4. The magnetic attraction structure of claim 2, wherein, The magnetic poles on the second surface (220) of the first magnetic part (241) are opposite to the magnetic poles on the first surface (210), the magnetic poles on the second surface (220) of the second magnetic part (242) are opposite to the magnetic poles on the first surface (210), and the magnetic poles on the second surface (220) of the second magnetic part (242) are opposite to the magnetic poles on the second surface (220) of the first magnetic part (241).

5. The magnetic attraction structure of claim 1, wherein, The main magnetic attraction component (230) has an arc-shaped structure. The main magnetic attraction component (230) includes multiple magnetic attraction units (235). The multiple magnetic attraction units (235) are arranged to form the main magnetic attraction component (230). The ends of the multiple magnetic attraction units (235) near the inner circumference of the main magnetic attraction component (230) together form the inner ring portion (231). The ends of the multiple magnetic attraction units (235) near the outer circumference of the main magnetic attraction component (230) together form the outer ring portion (232).

6. The magnetic attraction structure of claim 1, wherein, The main magnetic attraction assembly (230) includes a first sub-magnetic attraction unit (233) and a second sub-magnetic attraction unit (234) arranged in the radial direction of the magnetic attraction body (20). The magnetic poles of the first sub-magnetic attraction unit (233) and the second sub-magnetic attraction unit (234) are opposite at their respective ends. The first sub-magnetic attraction unit (233) is arranged near the inner circumference of the main magnetic attraction assembly (230), and its end away from the second sub-magnetic attraction unit (234) forms the inner ring portion (231). The second sub-magnetic attraction unit (234) is arranged near the outer circumference of the main magnetic attraction assembly (230), and its end away from the first sub-magnetic attraction unit (233) forms the outer ring portion (232).

7. The magnetic attraction structure of claim 1, wherein, The magnetic structure is a three-layer structure, which consists of the housing (10), the magnetic body (20) and the cover plate (40). The cover plate (40) is located on the housing (10) and covers the mounting groove (110).

8. A protective case characterized by, include: The protective shell body (50) includes a back plate (510) and a side frame (520) connected to the periphery of the back plate (510), wherein the back plate (510) and the side frame (520) enclose a receiving space; The bracket (60) is rotatably connected to the back plate (510) on the side opposite to the accommodating space via a connector (610); as well as A magnetic body (20) is located on the support (60); the magnetic body (20) includes a main magnetic assembly (230) and a positioning magnet (240), the positioning magnet (240) and the main magnetic assembly (230) are arranged in the same circumference; the main magnetic assembly (230) includes an inner ring portion (231) and an outer ring portion (232) arranged in the radial direction of the magnetic body (20), the magnetic poles of the outer ring portion (232) and the inner ring portion (231) are opposite; The magnetic poles of the main magnetic attraction assembly (230) facing the back plate (510) are opposite to those of the positioning magnet (240) facing the back plate (510).

9. The protective case of claim 8, wherein, The positioning magnet (240) is located at the end of the magnetic body (20) away from the connector (610).

10. The protective case of claim 9, wherein, Two positioning magnets (240) are provided. The main magnetic attraction assembly (230) includes arc-shaped structures respectively disposed on both sides of the connector (610). The two positioning magnets (240) are respectively disposed at the ends of the arc-shaped structures away from the connector (610).

11. The protective case of claim 8, wherein, The main magnetic attraction assembly (230) includes a first end near the connector (610) and a second end away from the connector (610), and the positioning magnet (240) is disposed between the first end and the second end.

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