protective sleeve

Abstract

A protective case includes a first support assembly, a second support assembly, a first magnet, and a second magnet. The first support assembly is used to fix a tablet computer; the second support assembly includes a support portion, a first bending portion, a second bending portion, and a third bending portion that are connected in sequence and can be bent around a first direction, the support portion and the first support assembly are fixed, and the third bending portion is used to be stacked with the support portion; the first magnet is fixed to the first support assembly, and the first magnet includes multiple rows of first magnetic parts arranged along a second direction; the second magnet and the third bending portion are fixed; wherein, the second magnet is used to attract the first magnetic parts located in different rows, realizing multi-angle support for the protective case, and the manufacturing cost of the protective case is low.

Description

Technical Field

[0001] This application relates to the field of electronic product technology, and more particularly to a protective case. Background Technology

[0002] When using protective cases to support tablets, these cases typically only offer a single support angle. A single support angle is insufficient to meet the needs of different users or in different scenarios, while existing protective cases that can provide multi-angle support are expensive to manufacture. Summary of the Invention

[0003] In view of this, it is necessary to provide a protective case that offers multi-angle support and is low in cost to solve the above problems.

[0004] A protective case includes a first support assembly, a second support assembly, a first magnet, and a second magnet. The first support assembly is used to fix a tablet computer; the second support assembly includes a support portion, a first bent portion, a second bent portion, and a third bent portion, wherein the support portion and the first support assembly are fixed, the first bent portion and the support portion are flexibly connected about a first direction, the second bent portion and the first bent portion are flexibly connected about a first direction, and the third bent portion and the second bent portion are foldably connected about a first direction, the third bent portion being used to connect the support portion; the first magnet is fixed to the first support assembly, the first magnet including multiple rows of first magnetic parts arranged along a second direction; the second magnet and the third bent portion are fixed; wherein the second magnet is used to attract the first magnetic parts located in different rows.

[0005] In the above structure, a first magnet is placed in the first support assembly, and a second magnet is placed in the third bend of the second support assembly. The first magnet portions of the second magnet and the first magnet located in opposite rows attract each other, achieving multi-angle support for the protective sleeve. Placing the first magnet at an appropriate position in the first support assembly and the second magnet at an appropriate position in the second support assembly enables multi-angle support for the protective sleeve. The manufacturing process of the protective sleeve is simple, the manufacturing cost is low, and there is no need to include heavy components in the protective sleeve, which helps to reduce the weight of the protective sleeve.

[0006] In one possible embodiment of this application, the first magnet includes at least one column of magnetic poles arranged along a first direction, and the magnetic poles of multiple rows of first magnet portions in the same column are the same.

[0007] In the above structure, the second magnet can attract the first magnet located in a different row.

[0008] In one possible embodiment of this application, the number of pole rows of the second magnet arranged along the first direction is the same as the number of pole rows of the first magnet portion arranged along the first direction.

[0009] In the above structure, the number of magnetic pole rows is the same. When the projections of the second magnet and the first magnet part coincide, it is easy to obtain a stronger attractive force in a smaller volume.

[0010] In one possible embodiment of this application, there is a spacing between two adjacent rows of first magnet portions along a second direction.

[0011] In the above structure, there is a gap between the first magnet sections of two adjacent rows, which facilitates the setting of angle adjustment positions on the protective sleeve.

[0012] In one possible embodiment of this application, the first magnet further includes a second magnet portion located between two adjacent rows of first magnet portions, and the second magnet portion is used to repel the second magnet.

[0013] In the above structure, when the projections of the second magnet and the second magnet part coincide, the second magnet part and the second magnet repel each other, causing the third bent part to move relative to the support part along the second direction until the second magnet and the first magnet part attract each other, so that the magnetic field between the second magnet and the first magnet part has the maximum projected area, thereby increasing the attraction force between the first magnet and the second magnet, and thus increasing the support stability of the protective sleeve.

[0014] In one possible embodiment of this application, the number of pole rows of the second magnet section is the same as that of the first magnet section; in the same column, the poles of the second magnet section are opposite to those of the first magnet section.

[0015] In the above structure, when the projections of the second magnet and the second magnet part coincide, it is easy to obtain a stronger repulsive force in a smaller volume.

[0016] In one possible embodiment of this application, the second magnet section is connected to two adjacent rows of first magnet sections.

[0017] In the above structure, the second magnet part and the first magnet part are integrated as a whole, which is beneficial for the manufacture of the first magnet and can also reduce the length of the first magnet along the second direction.

[0018] In one possible embodiment of this application, the first magnet includes at least two columns of magnetic poles arranged along a first direction, and the at least two columns of the first magnet are composed of at least two magnets.

[0019] In the above structure, there is a strong magnetic field between two adjacent regions of the magnets in different blocks.

[0020] In one possible embodiment of this application, the first magnet includes at least two columns of magnetic poles arranged along a first direction, and the at least two columns of the first magnet are composed of a single magnet.

[0021] The above structure helps to reduce the manufacturing cost of magnets.

[0022] In one possible embodiment of this application, the protective sleeve further includes a third magnet, which is fixed to the first support assembly, and the third magnet is used to attract the second magnet.

[0023] In the above structure, the second magnet and the third magnet attract each other, fixing the third bend and the support to each other, so that the first bend, the second bend and the third bend are all located on the surface of the support.

[0024] In one possible embodiment of this application, the first support assembly includes a support plate and a cover plate, the support plate and the cover plate are fixed together, and the support plate and the support part are fixed together; a groove is formed on the support plate, and the first magnet is located in the groove.

[0025] In the above structure, the support plate is used to fix the tablet computer and serves as a carrier for setting the first magnet, while the cover plate serves an aesthetic purpose. Attached Figure Description

[0026] Figure 1 A schematic diagram illustrating the structure of a tablet computer fixed to a protective case for use by a user in related technologies.

[0027] Figure 2 A schematic diagram of a protective case for a tablet computer in a supported state, provided for other related technologies.

[0028] Figure 3 This is a schematic diagram of the structure of a protective case for fixing a tablet computer in a first state, as provided in an embodiment of this application.

[0029] Figure 4 This is a schematic diagram of the structure of a protective case for fixing a tablet computer in a second state, as provided in an embodiment of this application.

[0030] Figure 5 This is a schematic diagram of the structure of a protective case for fixing a tablet computer in a third state, as provided in an embodiment of this application.

[0031] Figure 6 for Figure 4 The diagram shows the structure after the protective case and tablet computer are separated.

[0032] Figure 7 This is a schematic diagram of the structure of the protective case for fixing a tablet computer in the second state, provided in an embodiment of this application, from another position.

[0033] Figure 8 An exploded view of the protective sleeve provided in an embodiment of this application.

[0034] Figure 9 The protective sleeve provided in this application embodiment is shown in the usage state diagram when it has different support angles.

[0035] Figure 10A This is a schematic diagram of the structure of the first magnet provided in some embodiments of this application.

[0036] Figure 10B for Figure 10A The provided simulation test diagram shows the magnetic field strength of the first magnet.

[0037] Figure 11A This is a schematic diagram of the structure of the first magnet provided for other embodiments of this application.

[0038] Figure 11B for Figure 11A The provided simulation test diagram shows the magnetic field strength of the first magnet.

[0039] Figure 12 This is a schematic diagram of the protective cover in a second state, provided in some embodiments of this application.

[0040] Explanation of main component symbols

[0041]

[0042] Detailed Implementation

[0043] To better understand the above-mentioned objectives, features, and advantages of this application, the application will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. Many specific details are set forth in the following description to provide a thorough understanding of this application; the described embodiments are merely some, not all, of the embodiments described in this application.

[0044] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. The term "and / or" as used herein includes all and any combination of one or more of the associated listed items.

[0045] In the various embodiments of this application, for ease of description and not limitation, the term "connection" used in the patent application specification and claims is not limited to physical or mechanical connections, whether direct or indirect. Terms such as "upper," "lower," "above," "below," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship also changes accordingly.

[0046] Please see Figure 1, Figure 1 This is a schematic diagram illustrating the structure of a tablet computer 200' fixed to a protective case 100' for use in related technologies. The protective case 100' supports the tablet computer 200' and is placed on a support 210 (e.g., a desktop). The protective case 100' forms a triangular support structure, which can be fixed by magnetic attraction. However, the support angle of the protective case 100' is singular, for example, 60°. After the protective case 100' supports the tablet computer 200' and is placed on the desktop, the angle between the tablet computer 200' and the desktop is approximately 60°. For users with different heights, this singular support angle may cause problems such as screen glare, unresponsive stylus operation, and arm bumping against the corner of the table, affecting the user experience. Similarly, for the same user, the most comfortable angle may differ depending on the scenario, such as watching videos or performing handwriting operations, also affecting the user experience.

[0047] Please see Figure 2 , Figure 2 This is a structural diagram of a protective case 100” that holds a tablet computer 200” in a supported state, provided for some other related technologies. A pivot 101” is provided in the bending area of ​​the protective case 100”. The pivot 101” provides multi-angle support for the protective case 100”. Due to the complex structure and assembly steps of the pivot 101”, the manufacturing cost of the protective case 100” is high. Furthermore, the components of the pivot 101” are usually made of materials such as stainless steel to ensure the strength of the pivot 101”, which also increases the weight of the protective case 100”.

[0048] Please see Figures 3 to 5 This application provides a protective sleeve 100 that offers multi-angle support, low manufacturing cost, and low weight. Among other things, Figure 3 This is a schematic diagram of the protective case 100, which holds the tablet computer 200 in a first state, according to an embodiment of this application. Figure 4 This is a schematic diagram of the protective case 100, which holds the tablet computer 200 in a second state, according to an embodiment of this application. Figure 5 This is a schematic diagram of the structure of the protective case 100, which is fixed to the tablet computer 200, in the third state according to an embodiment of this application.

[0049] Please see Figure 3 The first state is that the protective case 100 covers the display screen 220 and back cover (not shown in the figure) of the tablet computer 200, making it easy to carry the protective case 100 and the tablet computer 200; please refer to Figure 4 The second state refers to the state when the protective case 100 supports the tablet computer 200 during use; please refer to [link / reference]. Figure 5The third state is when the protective case 100 is located on the back of the tablet computer 200 and does not support the tablet computer 200 during use, which is convenient for handheld use of the tablet computer 200. In the second state, the protective case 100 can provide multi-angle support for the tablet computer 200, which can be used by different users or in different usage scenarios, thus improving the user experience.

[0050] Please refer to the following: Figure 6 , Figure 7 and Figure 8 , Figure 6 for Figure 4 The diagram shown is a structural illustration of the protective case 100 and the tablet computer 200 after they are separated. Figure 7 This is a schematic diagram of the structure of the protective case 100, which holds the tablet computer 200, in a second state according to an embodiment of this application, from another angle. Figure 8 An exploded view of the protective sleeve 100 provided in the embodiments of this application.

[0051] The protective case 100 may include a first support component 10, a second support component 20, a first magnet 30, and a second magnet 40. The first support component 10 is used to fix the tablet computer 200 to secure the tablet computer 200 and the protective case 100. The second support component 20 is used to support the first support component 10, such that the protective case 100 supports the tablet computer 200 on the carrier 210 (i.e., the second state). The first magnet 30 is fixed to the first support component 10, and the second magnet 40 is fixed to the second support component 20. The second magnet 40 is used to attract at least a portion of the first magnet 30. When the second magnet 40 attracts different portions of the first magnet 30, the angle between the first support component 10 and the carrier 210 can be changed, thereby enabling the protective case 100 to support the tablet computer 200 at multiple angles.

[0052] The first support assembly 10 may include a support plate 11 and a cover plate 12, which are fixed together. The support plate 11 may include a body portion 111, a baffle portion 112, and a limiting portion 113, both of which are fixed to the body portion 111. The body portion 111 is generally plate-shaped, and its shape generally matches the shape of the tablet computer 200, for example, it is rectangular. The baffle portion 112 is located at the edge of the body portion 111, and when the protective cover 100 is used to support the tablet computer 200, the baffle portion 112 is located at the bottom of the body portion 111 along the direction of gravity. The limiting portion 113 is located in the corner area of ​​the body portion 111, and the limiting portion 113, the baffle portion 112, and the body portion 111 work together to fix the tablet computer 200.

[0053] It is understood that in other embodiments, the support plate 11 is not limited to the above structure. When the protective cover 100 is used to support the tablet computer 200, any structure that can fix the tablet computer 200 is feasible.

[0054] The first magnet 30 is located between the support plate 11 and the cover plate 12, and is fixed to the first support assembly 10. A first groove 1112 is provided on the main body 111, and the first magnet 30 is located in the first groove 1112. The first groove 1112 is located on the side of the main body 111 near the baffle portion 112. In this embodiment, the protective sleeve 100 includes four sets of first magnets 30, each set of first magnets 30 having continuous magnets, and the four sets of first magnets 30 having a gap between them. The main body 111 has four first grooves 1112 for receiving the first magnets 30. The first magnet 30 can be fixed in the first groove 1112 by adhesive bonding; however, other fixing methods can also be used.

[0055] The cover plate 12 is located on the surface of the main body 111 where the first groove 1112 is formed. The cover plate 12 is fixed to the main body 111 and covers the first magnet 30. The cover plate 12 serves an aesthetic purpose. When the tablet computer 200 and the protective case 100 are fixed, the back cover of the tablet computer 200 faces the cover plate 12, and the display screen 220 of the tablet computer 200 faces away from the cover plate 12.

[0056] The first support component 10 also includes a through hole 13, which is formed on the body 111 and the cover plate 12. The through hole 13 is used to correspond to the lens of the tablet computer 200 to prevent the first support component 10 from affecting the use of the lens of the tablet computer 200.

[0057] The second support assembly 20 may include a support portion 21, a first bending portion 22, a second bending portion 23, and a third bending portion 24. The support plate 11 and the support portion 21 are fixed. The first bending portion 22 and the support portion 21 are flexibly connected around a first direction L1. The second bending portion 23 and the first bending portion 22 are flexibly connected around the first direction L1. The third bending portion 24 and the second bending portion 23 are flexibly connected around the first direction L1. The support portion 21 has a through hole 13, which corresponds to and has the same function as the through hole 13 on the first support assembly 10.

[0058] When the protective case 100 is not supporting the tablet computer 200, the first bend 22, the second bend 23, and the third bend 24 are on the same plane. Along the direction in which the first bend 22, the second bend 23, and the third bend 24 are arranged, the sum of the lengths of the first bend 22, the second bend 23, and the third bend 24 is approximately equal to the length of the supporting portion 21. When the first bend 22, the second bend 23, and the third bend 24 are all located on the same plane and on the side where the display screen 220 of the tablet computer 200 is located, the protective case 100 is in a first state. When the first bend 22, the second bend 23, and the third bend 24 are all located on the same plane and on the side where the back cover of the tablet computer 200 is located, the protective case 100 is in a third state.

[0059] When the protective case 100 is used to support the tablet computer 200 (i.e., the second state), the first bending portion 22, the second bending portion 23, and the third bending portion 24 are all bent around the first direction L1, and the first bending portion 22, the second bending portion 23, and the third bending portion 24 are all bent to the side of the support portion 21 away from the tablet computer 200. The first bending portion 22 is placed on the carrier 210, the side of the second bending portion 23 away from the first bending portion 22 abuts against the support portion 21, and the third bending portion 24 is connected to the support portion 21 and stacked on top of each other. The first bending portion 22, the second bending portion 23, and the third bending portion 24 are used together to support the support portion 21, so that the support portion 21 supports the tablet computer 200 fixed on the first support assembly 10. When the third bending portion 24 and the support portion 21 are connected and stacked on top of each other, the second magnet 40 and the first magnet 30 attract each other, so that the support portion 21, the first bending portion 22, the second bending portion 23 and the third bending portion 24 form a stable support state.

[0060] The protective sleeve 100 may further include a third magnet 50, which is fixed to the first support assembly 10. A second groove 1114 for receiving the third magnet 50 may also be provided on the body portion 111, located on the side of the body portion 111 near the through hole 13. The third magnet 50 is located in the second groove 1114. When the protective sleeve 100 is in the third state, the second magnet 40 and the third magnet 50 attract each other, fixing the third bent portion 24 and the support portion 21 together, so that the first bent portion 22, the second bent portion 23, and the third bent portion 24 are all located on the surface of the support portion 21. In other embodiments, the third magnet 50 may be omitted as needed, and the second groove 1114 may also be omitted accordingly.

[0061] Please refer to it again. Figure 6 , Figure 7 and Figure 8The protective case 100 includes at least one set of first magnets 30. Each set of first magnets 30 includes multiple rows of first magnetic parts 31 arranged along a second direction L2, with a gap between adjacent rows of first magnetic parts 31 along the second direction L2. Second magnets 40 attract first magnetic parts 31 located in different rows. The relative position between the third bent portion 24 and the support portion 21 can change, thus changing the angle between the support portion 21 and the first bent portion 22. In other words, the angle between the support portion 21 and the support object 210 can vary, thereby enabling the protective case 100 to support the tablet computer 200 at different angles. The gap between adjacent rows of first magnetic parts 31 facilitates the setting of angle adjustment levels in the protective case 100.

[0062] Each set of first magnets 30 includes at least one column of magnetic poles arranged along the first direction L1, and the magnetic poles of multiple rows of first magnet portions 31 in the same column are the same; the number of magnetic pole columns of the second magnets 40 arranged along the first direction L1 is the same as the number of magnetic pole columns of the first magnet portions 31 arranged along the first direction L1. With the same number of magnetic pole columns, when the projections of the second magnets 40 and the first magnet portions 31 (along the direction in which the third bend portion 24 and the support portion 21 are stacked) coincide, it is convenient to obtain a stronger attractive force in a smaller volume. Specifically, when the first magnet part 31 includes a column of magnetic poles arranged along the first direction L1, the number of columns of magnetic poles arranged by the second magnet 40 along the first direction L1 is one, that is, the N pole or S pole of the second magnet 40 is used to interact with the first magnet; when the first magnet part 31 includes two columns of magnetic poles arranged along the first direction L1, the number of columns of magnetic poles arranged by the second magnet 40 along the first direction L1 is two, and the N pole and S pole of the second magnet 40 are arranged along the first direction L1; when the first magnet part 31 includes more than two columns of magnetic poles arranged along the first direction L1, the number of columns of magnetic poles arranged by the second magnet 40 along the first direction L1 is greater than two.

[0063] For example, in this embodiment, each of the four groups of first magnets 30 includes three rows of first magnet portions 31 arranged along the second direction L2. Two groups of first magnets 30 include two columns of magnetic poles arranged along the first direction L1. The magnetic poles of each row of first magnet portions 31 in the first column are all S poles, and the magnetic poles of each row of first magnet portions 31 in the second column are all N poles. Based on the principle of "opposite poles attract," the second magnet 40 has N poles for attracting the first column of first magnet portions 31 and S poles for attracting the second column of first magnet portions 31. Since the other two groups of first magnets 30 include one column of magnetic poles arranged along the first direction L1, the second magnet 40 also includes one column of magnetic poles arranged along the first direction L1.

[0064] In this embodiment, the second magnet 40 can attract the first magnet portions 31 arranged in three rows along the second direction L2. The support portion 21 and the first bending portion 22 can have three angle adjustment positions, meaning the support portion 21 and the carrier 210 can have three angle adjustment positions, thereby enabling the protective case 100 to support the tablet computer 200 at different angles. In some embodiments, the included angle between the support portion 21 and the carrier 210 can be between 45° and 75°, specifically the support angle can be 45°, 50°, 55°, 60°, 65°, 70°, or any value within the range of any two of the above values. It is understood that in other embodiments, the number of rows of the first magnet portions 31 arranged along the second direction L2 is not limited to three rows, but can also include two, four, or five rows, meaning the number of rows of the first magnet portions 31 arranged along the second direction L2 is greater than or equal to two rows.

[0065] It should be noted that, since the side of the first magnet 30 facing away from the tablet computer 200 is used to attract the second magnet 40, the magnetic poles (S pole and N pole) of the first magnet 30 listed in this application are all the magnetic poles of the side of the first magnet 30 facing away from the tablet computer 200. The magnetic poles of the side of the first magnet 30 facing the tablet computer 200 are opposite to those of the side facing away from the tablet computer 200. Similarly, the magnetic poles of the second magnet 40 listed in this application are the magnetic poles that can attract the first magnet portion 31 of the first magnet 30.

[0066] The first magnet 30 may further include a second magnet portion 32, which is located between two adjacent rows of first magnet portions 31. The number of pole rows of the second magnet portion 32 is the same as that of the first magnet portion 31. In the same row, the poles of the second magnet portion 32 are opposite to those of the first magnet portion 31. When the projections of the second magnet 40 and the second magnet portion 32 coincide, it is convenient to obtain a stronger repulsive force in a smaller volume. For example, if the poles of the first magnet portion 31 arranged along the second direction L2 are N poles and S poles, then the poles of the second magnet portion 32 arranged along the second direction L2 are S poles and N poles. The second magnet portion 32 is used to repel the second magnet 40 so that the second magnet 40 can attract the first magnet portion 31 adjacent to the second magnet portion 32.

[0067] In one specific embodiment, the first magnet 30 includes three rows of first magnet portions 31 and two rows of second magnet portions 32. The three rows of first magnet portions 31 and the two rows of second magnet portions 32 are arranged along the second direction L2 as follows: first magnet portion 31, second magnet portion 32, first magnet portion 31, second magnet portion 32, and first magnet portion 31. The first magnet 30 includes two columns of magnetic poles arranged along the first direction L1. The first column of magnetic poles is arranged as N pole, S pole, N pole, S pole, and N pole, and the second column of magnetic poles is arranged as S pole, N pole, S pole, N pole, and S pole. The second magnet 40 has two columns of magnetic poles along the first direction L1, namely, S pole and N pole.

[0068] Please see Figure 9 , Figure 9 The protective sleeve 100 provided in this application embodiment is shown in the usage state diagram when it has different support angles. When the projections of the second magnet 40 (i.e., the S pole and the N pole) and the first magnet portion 31 (i.e., the N pole and the S pole) located in the first row coincide, the second magnet 40 and the first magnet 30 attract each other, as shown in the diagram. Figure 9 In (a), the support angle of the protective sleeve 100 is α1; when the projections of the second magnet 40 (i.e., the S pole and the N pole) and the second magnet part 32 (i.e., the S pole and the N pole) located in the second row coincide, the second magnet 40 and the first magnet 30 repel each other; when the projections of the second magnet 40 (i.e., the S pole and the N pole) and the first magnet part 31 (i.e., the N pole and the S pole) located in the third row coincide, the second magnet 40 and the first magnet 30 attract each other, as shown in (a). Figure 9 In (b), the support angle of the protective sleeve 100 is α2; when the projections of the second magnet 40 (i.e., the S pole and the N pole) and the second magnet part 32 (i.e., the S pole and the N pole) located in the fourth row coincide, the second magnet 40 and the first magnet 30 repel each other; when the projections of the second magnet 40 (i.e., the S pole and the N pole) and the first magnet part 31 (i.e., the N pole and the S pole) located in the fifth row coincide, the second magnet 40 and the first magnet 30 attract each other, as shown in (b). Figure 9 In (c), the support angle of the protective sleeve 100 is α3. The specific interaction relationship between the first magnet 30 and the second magnet 40 in this embodiment can be found in Table 1. The second magnet 40 and the first magnet portion 31 in a different row attract each other, so the third bent portion 24 needs to move synchronously relative to the support portion 21 along the second direction L2. The angle between the support portion 21 and the carrier 210 changes. Figure 9 The included angles in (a), (b), and (c) increase sequentially, i.e., α1 < α2 < α3.

[0069] Table 1. Relationship between the function of the first magnet 30 and the second magnet 40

[0070]

[0071] In this embodiment, the second magnet 40 can attract the first magnet portion 31 located in the first, third, and fifth rows, respectively, and can repel the second magnet portion 32 located in the second and fourth rows, respectively. When the projections of the second magnet 40 and the first magnet 30 in the second or fourth row coincide, the first magnet 30 repels the second magnet 40, causing the third bent portion 24 to move relative to the support portion 21 along the second direction L2 until the second magnet 40 and the first magnet portion 31 attract each other, so that the second magnet 40 and the first magnet portion 31 have the maximum projected area, thereby increasing the attractive force between the first magnet 30 and the second magnet 40, and thus increasing the support stability of the protective sleeve 100.

[0072] In some embodiments, the second magnet portion 32 can be connected to two adjacent rows of first magnet portions 31, and the second magnet portion 32 and the first magnet portion 31 are integrated as a whole. This facilitates the fabrication of the first magnet 30 and can also reduce the length of the first magnet 30 along the second direction L2. In other embodiments, the second magnet portion 32 may also have a gap between it and two adjacent rows of first magnet portions 31, that is, the second magnet portion 32 and the first magnet portion 31 are both independent magnets.

[0073] Please see Figure 10A and Figure 10B Figure 10 is a schematic diagram of the structure of the first magnet 30 provided in some embodiments of this application. Figure 10B for Figure 10A The provided diagram shows a simulation test of the magnetic field strength of the first magnet 30. The first magnet 30 includes at least two rows of magnetic poles arranged along a first direction L1, and the at least two rows of the first magnet 30 are composed of at least two magnets (e.g., Figure 10A (The dotted line in the image) The first magnet 30 can be formed by a partitioned magnetization method. A set of first magnets 30 can be composed of multiple magnets, that is, each magnet is divided into multiple regions, and the multiple regions of each magnet are respectively formed into N poles or S poles by partitioned magnetization. The magnetic fields between two adjacent regions within the same magnet will cancel each other out to form a non-magnetic region; after multiple magnets are combined into a set of first magnets 30, a magnetic field can be formed between two regions of two adjacent columns located on different magnets.

[0074] In one specific embodiment, a set of first magnets 30 includes two rows of magnetic poles arranged along a first direction L1. The two rows of first magnets 30 are composed of two magnets arranged along the first direction L1 to form the first magnets 30. The length of the first magnet 30 along the first direction L1 is 16 mm, the length along the second direction L2 is 40 mm, the thickness of the magnet is 1 mm, and the material of the first magnet 30 is N52H. The same side of the first magnet 30 includes ten zones. Simulation tests were performed on the magnetic field strength of the first magnet 30. The magnetic field strength range of the first magnet 30 is 830 Gs-3400 Gs. The magnetic field strength between adjacent zones of different magnets is relatively strong, while the magnetic field strength between adjacent zones of the same magnet decreases.

[0075] Please see Figure 11A and Figure 11B , Figure 11A This is a schematic diagram of the structure of the first magnet 30a provided in other embodiments of this application. Figure 11B for Figure 11A A simulation test diagram of the magnetic field strength of the first magnet 30a is provided. The first magnet 30a includes at least two rows of magnetic poles arranged along the first direction L1, and the at least two rows of the first magnet 30a are composed of a single magnet (e.g., Figure 11A (The dotted line in the image) The first magnet 30a can be formed by a partitioned magnetization method. For example, a set of first magnets 30a consists of a single, complete magnet, which is divided into multiple zones. The partitioned magnetization method is used to form N poles or S poles in each zone. Since a set of first magnets 30a is a single magnet, the magnetic fields between two adjacent zones within the magnet will cancel each other out, forming a non-magnetic zone and losing some magnetic field strength.

[0076] In one specific embodiment, unlike the previous specific embodiment, the first magnet 30a is composed of a single magnet. Simulation tests were performed on the magnetic field strength of the first magnet 30a, which ranged from 810 Gs to 2900 Gs. The magnetic field strength decreased between adjacent regions of the same magnet. Compared to the previous embodiment, the magnetic field strength of a single magnet is slightly reduced, and the manufacturing cost of a single magnet is low.

[0077] Please see Figure 12 , Figure 12This is a schematic diagram of the protective sleeve 100b in a second state according to some embodiments of this application. Unlike the previous embodiment, in this embodiment, the first magnet 30b includes multiple rows of first magnet portions 31 arranged along the second direction L2, with a spacing between adjacent rows of first magnet portions 31 along the second direction L2. The first magnet 30b does not include a second magnet portion 32. Each first magnet portion 31 can be an independent magnet. In this embodiment, the protective sleeve 100b includes four sets of first magnets 30b, each first magnet 30b includes three rows of first magnet portions 31, and each first magnet portion 31 is an independent magnet, equivalent to the four sets of first magnets 30b including twelve independent magnets. Omitting the second magnet portion 32 in this embodiment reduces the mass of the first magnets 30b, thereby helping to reduce the mass of the protective sleeve 100b.

[0078] The protective sleeve 100 (or 100b) provided in this application embodiment has a first magnet 30 disposed in the first support component 10 and a second magnet 40 disposed in the third bend 24 of the second support component 20. The first magnet portions 31 of the second magnet 40 and the first magnet 30 located in different rows attract each other, thereby achieving multi-angle support for the protective sleeve 100 (or 100b). By setting the first magnet 30 at an appropriate position in the first support component 10 and the second magnet 40 at an appropriate position in the second support component 20, multi-angle support for the protective sleeve 100 (or 100b) can be achieved. The manufacturing steps of the protective sleeve 100 (or 100b) are simple, the manufacturing cost is low, and there is no need to set up heavy components in the protective sleeve 100 (or 100b), which is beneficial to reducing the weight of the protective sleeve 100 (or 100b).

[0079] The above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to the above preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions to the technical solutions of this application should not depart from the spirit and scope of the technical solutions of this application.

Claims

1. A protective case, characterized in that, include: The first support component is used to secure the tablet computer. The second support component includes a support portion, a first bent portion, a second bent portion, and a third bent portion. The support portion and the first support component are fixed. The first bent portion and the support portion are flexibly connected around a first direction. The second bent portion and the first bent portion are flexibly connected around the first direction. The third bent portion and the second bent portion are flexibly connected around the first direction. The third bent portion is used to be stacked with the support portion. A first magnet is fixed to the first support assembly, and the first magnet includes multiple rows of first magnet portions arranged along a second direction; as well as The second magnet is fixed to the third bent portion; The second magnet is used to attract the first magnet located in a different row.

2. The protective sleeve according to claim 1, characterized in that, The first magnet includes at least one column of magnetic poles arranged along the first direction, and the magnetic poles of multiple rows of the first magnet portions in the same column are the same.

3. The protective sleeve according to claim 2, characterized in that, The number of magnetic poles arranged in the second magnet along the first direction is the same as the number of magnetic poles arranged in the first magnet part along the first direction.

4. The protective sleeve according to claim 2, characterized in that, There is a spacing between two adjacent rows of the first magnet sections along the second direction.

5. The protective sleeve according to any one of claims 2-4, characterized in that, The first magnet further includes a second magnet portion located between two adjacent rows of the first magnet portions, and the second magnet portion is used to repel the second magnet.

6. The protective sleeve according to claim 5, characterized in that, The number of pole rows in the second magnet section is the same as that in the first magnet section; within the same column, the poles of the second magnet section are opposite to those of the first magnet section.

7. The protective sleeve according to claim 5, characterized in that, The second magnet section is connected to the two adjacent rows of the first magnet sections.

8. The protective sleeve according to claim 7, characterized in that, The first magnet includes at least two columns of magnetic poles arranged along the first direction, and the at least two columns of the first magnet are composed of at least two magnets.

9. The protective sleeve according to claim 7, characterized in that, The first magnet includes at least two columns of magnetic poles arranged along the first direction, and the at least two columns of the first magnet are composed of a single magnet.

10. The protective sleeve according to any one of claims 1-4 and 6-9, characterized in that, The protective sleeve also includes a third magnet, which is fixed to the first support assembly and is used to attract the second magnet.

11. The protective sleeve according to any one of claims 1-4 and 6-9, characterized in that, The first support assembly includes a support plate and a cover plate, the support plate and the cover plate are fixed together, and the support plate and the support part are fixed together; a groove is formed on the support plate, and the first magnet is located in the groove.

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