Magnetic sheet and magnetic splicing teaching device

Abstract

The utility model discloses an embodiment discloses a kind of magnetic force sheet and magnetic force splicing teaching device, and magnetic force sheet includes: first shell;Second shell is connected with first shell, and first shell and second shell are enclosed to form multiple closed installation grooves, and the edge of installation groove is close to first shell and second shell;Multiple magnetic attraction parts are respectively installed in multiple installation grooves, and two magnetic force sheets can be mutually magnetized by magnetic attraction part;Wherein, the edge of first shell and second shell all has holding surface, and holding surface is inclined plane, when the included angle between two mutually magnetized magnetic force sheets reaches holding angle, the holding surface of two magnetic force sheets mutually adheres, and one magnetic force sheet can be supported to another magnetic force sheet by mutually adhered holding surface.The magnetic force sheet proposed in the present application can be kept stable when the included angle between two magnetic force sheets reaches holding angle by only two magnetic force sheets mutually magnetizing, without being overlapped by multiple magnetic force sheets to become three-dimensional structure, and the splicing difficulty is reduced.

Description

Technical Field

[0001] This application relates to the field of teaching aids technology, and in particular to a magnetic sheet and a magnetic splicing teaching device. Background Technology

[0002] In related technologies, magnetic sheets cannot maintain a stable state when two magnetic sheets are attracted to each other. Usually, three or more magnetic sheets are needed to be attracted to each other to keep each magnetic sheet stable, which increases the difficulty of splicing the magnetic sheets. Utility Model Content

[0003] This application aims to address at least one of the technical problems existing in the prior art or related technologies.

[0004] In view of the above, according to the first aspect of the technical solution of this application, a magnetic sheet is provided, comprising: a first housing; a second housing connected to the first housing, the first housing and the second housing forming a plurality of closed mounting grooves, the mounting grooves being close to the edges of the first housing and the second housing; a plurality of magnetic attracting elements, respectively installed in the plurality of mounting grooves, two magnetic sheets being able to magnetically attract each other through the magnetic attracting elements; wherein, the edges of the first housing and the second housing each have a retaining surface, the retaining surface being an inclined plane, when the included angle between two magnetically attracted magnetic sheets reaches the retaining angle, the retaining surfaces of the two magnetic sheets are in contact with each other, and one magnetic sheet can be supported by the in contact retaining surfaces of the other magnetic sheet.

[0005] In some technical solutions provided in this application, the junction of the edge of the first shell and the edge of the second shell forms an arc surface. The retaining surface of the first shell and the retaining surface of the second shell are symmetrically located on both sides of the arc surface and connected to the arc surface. Within the range of the central angle of the arc surface, the shell thickness of the first shell at any position is the same as the shell thickness of the second shell at any position. Outside the range of the central angle of the arc surface, along the direction away from the arc surface, the shell thickness of the first shell and the shell thickness of the second shell gradually increase.

[0006] In some of the technical solutions provided in this application, the central angle of the arc surface ranges from 80° to 100°, and the angle of the maintaining angle ranges from 80° to 100°.

[0007] In some of the technical solutions provided in this application, the angle between the center of the arc surface and the line connecting the two ends of the corresponding retaining surface ranges from 20° to 30°.

[0008] In some of the technical solutions provided in this application, the magnetic attractor is a rotating body, and there is a gap between any magnetic attractor and the inner wall of the corresponding mounting groove, so that the magnetic attractor can rotate in the corresponding mounting groove.

[0009] In some of the technical solutions provided in this application, the magnetic attractor is a magnet, and the shape of the magnetic attractor is a cylinder.

[0010] In some of the technical solutions provided in this application, the first housing and the second housing are polygons of the same shape, and at least two of the multiple mounting slots are sequentially arranged along either side of the first housing and the second housing.

[0011] In some of the technical solutions provided in this application, there is a gap between any magnetic element and the end of the corresponding first housing and second housing edge, and the gap is greater than 10mm.

[0012] In some of the technical solutions provided in this application, the first housing and the second housing are welded together, and the first housing and the second housing enclose a closed space; or the magnetic sheet may also include multiple connectors, which are used to detachably connect the first housing and the second housing.

[0013] The second aspect of the technical solution of this application proposes a magnetic splicing teaching device, which includes multiple magnetic sheets as proposed in the first aspect of this application. Any two magnetic sheets can be magnetically attracted to each other by magnetic attractors installed on the edges of the magnetic sheets, and any magnetic sheet can rotate about the edges of adjacent magnetic sheets as the axis of rotation.

[0014] Compared with the prior art, the present invention has at least the following beneficial effects:

[0015] By providing retaining surfaces along the edges of the first and second housings, when the two magnetically attracted magnetic pieces rotate to the retaining angle, the lower magnetic piece can be supported by the retaining surface, thus ensuring the stability of the two magnetic pieces in that position. The magnetic pieces proposed in this application can remain stable in a specific position (i.e., when the angle between the two magnetic pieces reaches the retaining angle) simply by the mutual attraction of two magnetic pieces, eliminating the need for multiple magnetic pieces to be stacked into a three-dimensional structure. This reduces the difficulty of assembly and makes it easier for users to assemble the magnetic pieces. Attached Figure Description

[0016] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0017] Figure 1 One of the schematic diagrams of the structure of a magnetic sheet provided in this application;

[0018] Figure 2 A second schematic diagram of the structure of a magnetic sheet according to an embodiment of this application;

[0019] Figure 3 An exploded view of a magnetic sheet according to one embodiment of this application;

[0020] Figure 4 One of the structural schematic diagrams of a magnetic splicing teaching device provided in this application;

[0021] Figure 5 A second schematic diagram of the structure of a magnetic splicing teaching device according to an embodiment of this application;

[0022] Figure 6 A third schematic diagram of the structure of a magnetic splicing teaching device according to an embodiment of this application;

[0023] Figure 7 A fourth schematic diagram of the structure of a magnetic splicing teaching device according to an embodiment of this application;

[0024] Figure 8 A third schematic diagram of the structure of a magnetic sheet according to an embodiment of this application;

[0025] Figure 9 One of the schematic diagrams of the structure of two magnetic sheets attracting each other according to an embodiment of this application;

[0026] Figure 10 A second schematic diagram of the structure in which two magnetic sheets attract each other according to an embodiment of this application;

[0027] Figure 11 A schematic diagram of the central angle of the arc surface of a magnetic sheet according to one embodiment of this application;

[0028] Figure 12 A third schematic diagram of the structure of two magnetic sheets attracting each other according to an embodiment of this application;

[0029] Figure 13 The fourth schematic diagram of the structure of two magnetic sheets attracting each other in one embodiment of this application.

[0030] in, Figures 1 to 13 The correspondence between the reference numerals and component names in the attached drawings is as follows:

[0031] 100. Magnetic sheet; 110. First shell; 111. Arc surface; 112. Holding surface; 113. Shell structure; 114. First straight line; 115. Second straight line; 120. Second shell; 130. Magnetic suction element; 140. Mounting groove; 200. Magnetic splicing teaching device. Detailed Implementation

[0032] To better understand the above technical solutions, the technical solutions of the embodiments of this application will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the embodiments of this application and the specific features in the embodiments are detailed descriptions of the technical solutions of the embodiments of this application, rather than limitations on the technical solutions of this application. In the absence of conflict, the embodiments of this application and the technical features in the embodiments can be combined with each other.

[0033] The following reference Figures 1 to 13 The present invention describes a magnetic sheet 100 and a magnetic splicing teaching device 200 provided according to some embodiments of the present invention.

[0034] In one embodiment according to this application, such as Figure 1 , Figure 2 , Figure 3 and Figure 7 As shown, this application proposes a magnetic sheet 100, comprising: a first housing 110; a second housing 120 connected to the first housing 110, the first housing 110 and the second housing 120 forming a plurality of closed mounting grooves 140, the mounting grooves 140 being close to the edges of the first housing 110 and the second housing 120; a plurality of magnetic attracting elements 130 respectively installed in the plurality of mounting grooves 140, two magnetic sheets 100 being able to magnetically attract each other through the magnetic attracting elements 130; wherein, the edges of the first housing 110 and the second housing 120 each have a retaining surface 112, the retaining surface 112 being an inclined plane, when the included angle between two magnetically attracted magnetic sheets 100 reaches the retaining angle, the retaining surfaces 112 of the two magnetic sheets 100 are in contact with each other, one magnetic sheet 100 can support the other magnetic sheet 100 through the in contacting retaining surfaces 112.

[0035] This application discloses a magnetic sheet 100, the edge of which can be magnetically attracted to the edge of another magnetic sheet 100, and the two sheets can rotate relative to each other about the attracted edges as an axis of rotation. When there are multiple magnetic sheets 100, adjacent magnetic sheets 100 can be magnetically attracted to each other and rotate relative to each other, thereby forming various three-dimensional or two-dimensional shapes. For example... Figure 1 As shown, the magnetic sheet 100 includes a first housing 110 and a second housing 120, which are interconnected. When the first housing 110 and the second housing 120 are connected, the outer surfaces of both housings are exposed and face the outside of the magnetic sheet 100, while the inner surfaces of both housings face each other and face the inside of the magnetic sheet 100. Figure 3As shown, the inner surfaces of the first housing 110 and the second housing 120 are provided with a plurality of shell-shaped structures 113 with grooves. When the first housing 110 and the second housing 120 are connected, the plurality of shell-shaped structures 113 on the first housing 110 and the plurality of shell-shaped structures 113 on the second housing 120 are aligned with each other and together form a plurality of mounting grooves 140, which are closed structures.

[0036] Furthermore, such as Figure 2 and Figure 3 As shown, the magnetic sheet 100 also includes a plurality of magnetic attractors 130. The number of magnetic attractors 130 is the same as the number of mounting slots 140, and they are arranged in a one-to-one correspondence. Each magnetic attractor 130 is installed in the corresponding mounting slot 140. The mounting slots 140 are close to the edges of the first housing 110 and the second housing 120. Since the magnetic attractors 130 are installed in the mounting slots 140, they are also close to the edges of the first housing 110 and the second housing 120. When two magnetic sheets 100 approach each other, the magnetic attractors 130 at the edges of the two magnetic sheets 100 attract each other, so that the two magnetic sheets 100 can be connected by magnetic force.

[0037] Furthermore, such as Figure 7 As shown, both the first housing 110 and the second housing 120 are provided with retaining surfaces 112. When two magnetically attracted magnetic pieces 100 rotate relative to each other to a specific position, the retaining surfaces 112 on the two magnetic pieces 100 come into contact with each other. Furthermore, the lower magnetic piece 100 can also support the upper magnetic piece 100 through the retaining surface 112, thereby ensuring the stability of the two magnetic pieces 100 at that position. Specifically, the retaining surfaces 112 are located at the edges of the first housing 110 and the second housing 120, and are inclined planes. When the two magnetically attracted magnetic pieces 100 rotate relative to each other, there is an angle between them. When the angle between the two magnetic pieces 100 reaches the retaining angle, the retaining surfaces of the two magnetic pieces 100 come into contact with each other. Understandably, since the holding surface 112 is a plane, when the holding surfaces 112 of the two magnetic pieces 100 are in contact, there is a large contact area between the two magnetic pieces 100. The lower magnetic piece 100 can provide a supporting force to the upper magnetic piece 100 through the holding surface 112. The upper magnetic piece 100 is subjected to the magnetic attraction of the other magnetic piece 100 and the supporting force applied through the holding surface 112, so that the magnetic piece 100 can be stably held in that position.

[0038] By providing retaining surfaces 112 along the edges of the first housing 110 and the second housing 120, when the two magnetically attracted magnetic pieces 100 rotate to a retaining angle, the lower magnetic piece 100 can support the upper magnetic piece 100 through the retaining surface 112, thereby ensuring the stability of the two magnetic pieces 100 in that position. The magnetic pieces 100 proposed in this application can remain stable in a specific position (i.e., when the angle between the two magnetic pieces 100 reaches the retaining angle) simply by the mutual attraction of two magnetic pieces 100, without requiring multiple magnetic pieces 100 to be stacked into a three-dimensional structure. This reduces the difficulty of assembly and makes it easier for users to assemble the magnetic pieces 100.

[0039] In some embodiments, optionally, such as Figure 8 , Figure 9 , Figure 10 and Figure 11 As shown, the junction of the edge of the first housing 110 and the edge of the second housing 120 forms an arc surface 111. The retaining surface 112 of the first housing 110 and the retaining surface 112 of the second housing 120 are symmetrically located on both sides of the arc surface 111 and connected to the arc surface 111. Within the range of the central angle of the arc surface 111, the housing thickness of the first housing 110 at any position is the same as the housing thickness of the second housing 120 at any position. Outside the range of the central angle of the arc surface 111, along the direction away from the arc surface 111, the housing thickness of the first housing 110 and the housing thickness of the second housing 120 gradually increase.

[0040] In this embodiment, the structures of the first housing 110 and the second housing 120 are further defined. For example... Figure 8 As shown, the junction of the edge of the first housing 110 and the edge of the second housing 120 forms an arc surface 111. The arc surface 111 can be a perfectly circular sphere. Figure 9 As shown, when the edges of the two magnetic pieces 100 are in contact with each other, the two arc surfaces 111 of the two magnetic pieces 100 are in contact with each other and are tangent to each other. The magnetic attracting members 130 on the contacting edges of the two magnetic pieces 100 move closer to each other under the action of magnetic attraction, and the magnetic attracting members 130 move within the mounting groove 140 to the side closer to the other magnetic piece 100. By forming an arc surface 111 at the junction of the edge of the first housing 110 and the edge of the second housing 120, the two magnetic pieces 100 can maintain mutual attraction when they rotate relative to each other, and the magnetic pieces 100 can rotate smoothly, avoiding jamming during rotation.

[0041] Furthermore, the retaining surface 112 of the first housing 110 and the retaining surface 112 of the second housing 120 are symmetrically located on both sides of the arc surface 111 and connected to the arc surface 111. Specifically, when the two magnetic pieces 100 are magnetically attracted to each other and rotate relative to each other, the arc surfaces 111 of the two magnetic pieces 100 come into contact with each other, and the magnetic pieces 100 rotate along the surface of the arc surface 111. The included angle between the two magnetic pieces 100 gradually decreases until the magnetic pieces 100 rotate along the arc surface 111 to the position of the retaining surface 112, such as... Figure 10 As shown, the holding surfaces 112 of the two magnetic sheets 100 are in contact with each other. Since the two holding surfaces 112 are both planar, they can provide a certain supporting force to the magnetic sheets 100, so that the two magnetic sheets 100 remain stable in this position.

[0042] In one possible embodiment, the retaining surface 112 is tangent to the arc surface 111 at the connection.

[0043] Furthermore, the mounting groove 140 in the magnetic sheet 100 is located close to the arc surface 111 and the holding surface 112. At the arc surface 111 and the holding surface 112, both the first housing 110 and the second housing 120 are shell structures with a certain thickness. Within the central angle range of the arc surface 111, the shell thickness at any position of the first housing 110 is the same as the shell thickness at any position of the second housing 120. Specifically, within the central angle range of the arc surface 111, the shell thickness of the first housing 110 and the second housing 120 is the minimum vertical distance between any point on the arc surface 111 and the groove wall of the mounting groove 140. Understandably, the magnetic attraction between the two magnetic elements 130 is related to the shell thickness between the two magnetic elements 130; the thicker the shell between the two magnetic elements 130, the smaller the magnetic attraction between the two magnetic elements 130.

[0044] In one possible embodiment, such as Figure 11 As shown, the central angle α of the arc surface 111 is 90°. Within the range of the central angle α, the shell thickness d at any position of the first shell 110 and the shell thickness d at any position of the second shell 120 is 0.5 mm.

[0045] By keeping the thickness of the first housing 110 and the second housing 120 at any position within the central angle range of the arc surface 111, the magnetic attraction between the two magnetic pieces 100 can be kept stable when they rotate within the central angle of the arc surface 111, thus preventing changes in the magnetic attraction between the two magnetic pieces 100 when they rotate within the central angle of the arc surface 111 and improving the rotational stability of the magnetic pieces 100.

[0046] Furthermore, outside the central angle range of the arc surface 111, along the direction away from the arc surface 111, the shell thickness of the first shell 110 and the shell thickness of the second shell 120 gradually increase. When the two magnetic pieces 100 are attracted to each other, the magnetic piece 100 first rotates along the arc surface 111, at which time the magnetic piece 100 rotates within the range of the central angle of the arc surface 111. Until the magnetic piece 100 rotates until the two holding surfaces 112 are in contact with each other, at which point the magnetic piece 100 rotates to the edge of the central angle of the arc surface 111, that is, the connection between the arc surface and the holding surface. If the magnetic piece 100 continues to rotate, the included angle between the two magnetic pieces 100 gradually decreases, the magnetic piece 100 rotates outside the range of the central angle of the arc surface 111, the holding surfaces 112 of the two magnetic pieces 100 gradually separate, the shell thickness of the first shell 110 and the second shell 120 gradually increases, and the magnetic attraction between the two magnetic pieces 100 gradually decreases. If the operator continues to rotate the magnetic piece 100, they will feel resistance. If the operator releases their hand, the magnetic piece 100 will return to the position where the two holding surfaces 112 are in contact under the action of magnetic attraction, that is, the angle between the two magnetic pieces 100 is the holding angle. In this way, the two magnetic pieces 100 can maintain the maximum magnetic attraction between them when the holding surfaces 112 are in contact, so that the magnetic pieces 100 can remain stable in this position.

[0047] In some embodiments, the central angle of the arc surface 111 may be in the range of 80° to 100°, and the angle of the holding angle may be in the range of 80° to 100°.

[0048] In this embodiment, the range of the holding angle and the central angle of the arc surface 111 is defined. Specifically, the holding angle ranges from 80° to 100°, so that the two magnetically attracted magnetic sheets 100 can remain stable in a nearly perpendicular position to form a vertical structure. In one possible embodiment, the holding angle is 90°.

[0049] Furthermore, the central angle of the arc surface 111 ranges from 80° to 100°. Specifically, the retaining surface 112 is tangent to the arc surface 111. By limiting the central angle of the arc surface 111 to 80° to 100°, the angle between the retaining surface 112 and the horizontal plane can be limited to the range of 40° to 50°. When the retaining surfaces 112 of the two magnetic pieces 100 are in contact with each other, the angle between the two magnetic pieces 100 can be maintained within the range of 80° to 100°, which is close to a perpendicular state.

[0050] In one possible embodiment, such as Figure 11 As shown, the central angle α of the arc surface 111 is 90°. Figure 9As shown, when the arc surfaces 111 of the two magnetic pieces 100 come into contact with each other, the magnetic pieces 100 rotate within the range of the central angle of the arc surface 111. As the two magnetic pieces 100 rotate relative to each other, the included angle between the two magnetic pieces 100 gradually decreases until the magnetic pieces 100 rotate to the edge of the central angle of the arc surface 111 (e.g., ...). Figure 10 As shown), at this time, the holding surfaces 112 of the two magnetic sheets 100 are in contact with each other, and the included angle between the two magnetic sheets 100 reaches the holding angle, that is, 90°. Under the action of mutual magnetic attraction and the mutual support of the two holding surfaces 112, the magnetic sheets 100 remain perpendicular to each other. Figure 13 As shown, when the central angle of the arc surface 111 is 90°, the angle δ between the surface 112 and the horizontal line is kept at 45° when the magnetic sheet 100 is placed horizontally.

[0051] In some embodiments, optionally, the angle between the center of the arc surface and the line connecting the two ends of the corresponding retaining surface ranges from 20° to 30°.

[0052] In this embodiment, the holding surface is further defined. Specifically, there is an angle between the center of the arc surface 111 and the line connecting the two ends of the corresponding holding surface 112, and the angle ranges from 20° to 30°. Understandably, the holding surface 112 has a certain length. If the length of the holding surface 112 is too short, the contact area between the two magnetic pieces 100 will be too small, making it difficult for the magnetic pieces 100 to remain stable. If the length of the holding surface 112 is too large, the thickness of the magnetic pieces 100 will increase, resulting in an increase in the volume of the magnetic pieces 100. In order to limit the length of the holding surface 112 to a reasonable range, this application defines the angle between the center of the arc surface 111 and the line connecting the two ends of the corresponding holding surface 112. The length of the holding surface 112 is related to the angle; the larger the angle, the longer the holding surface 112; the smaller the angle, the shorter the holding surface 112. By limiting the angle between the center of the arc surface 111 and the lines connecting the two ends of the corresponding retaining surface 112 to a range of 20° to 30°, the length of the retaining surface 112 can be kept within an appropriate range.

[0053] In one possible embodiment, such as Figure 12 As shown, the central angle α of the arc surface 111 is 90°, and the magnetic attractor 130 is a cylinder. When the holding surfaces 112 of the two magnetic pieces 100 are in contact with each other, the two magnetic pieces 100 are perpendicular to each other. The line connecting the center of the arc surface 111 to the end of the holding surface 112 away from the arc surface 111 is the first straight line 114, and the line connecting the center of the arc surface 111 to the end of the holding surface 112 connected to the arc surface 111 is the second straight line 115. The included angle β between the first straight line 114 and the second straight line 115 is 25°.

[0054] In some embodiments, the magnetic member 130 may be a rotating body, and there may be a gap between any magnetic member 130 and the inner wall of the corresponding mounting groove 140, so that the magnetic member 130 can rotate within the corresponding mounting groove 140.

[0055] In this embodiment, the magnetic attractor 130 is defined. The magnetic attractor 130 is a rotating body, and there is a gap between the magnetic attractor 130 and the inner wall of the corresponding mounting groove 140, so that the magnetic attractor 130 can rotate freely within the mounting groove 140. In one possible embodiment, the magnetic attractor 130 is a magnet. Understandably, a magnet has north and south poles. When two magnetic pieces 100 approach each other, if the magnetic attractors 130 on the side approaching each other are like poles, then a repulsive force will be generated between the two magnetic attractors 130. Under the action of the repulsive force, the magnetic attractor 130 rotates within the mounting groove 140 until the side approaching each other of the two magnetic attractors 130 are opposite poles. At this time, the two magnetic attractors 130 are magnetically attracted to each other, thereby magnetically connecting the two magnetic pieces 100.

[0056] By setting the magnetic attractor 130 as a rotating body and making a gap between the magnetic attractor 130 and the inner wall of the mounting groove 140, the magnetic attractor 130 can rotate freely in the mounting groove 140. When the two magnetic pieces 100 approach each other, the magnetic attractor 130 in the two magnetic pieces 100 can automatically rotate to the position where they attract each other, so that the two magnetic pieces 100 can automatically attract each other.

[0057] Furthermore, as the two magnetic pieces 100 rotate relative to each other, the position of the magnetic attractor 130 within the mounting groove 140 changes accordingly. Two magnetic attractors 130 that are close to each other on the two magnetic pieces 100 attract each other, and the magnetic attractor 130 moves within the mounting groove 140 to a position where it is closest to the magnetic attractor 130 on the other magnetic piece 100. For example... Figure 9 As shown, when the included angle between the two magnetic pieces 100 is 180°, the magnetic attracting element 130 in one magnetic piece 100 is located at the right end of the mounting groove 140, and the magnetic attracting element 130 in the other magnetic piece 100 is located at the left end of the mounting groove 140. Figure 10 As shown, when the included angle between the two magnetic pieces 100 is 90°, the magnetic attractor 130 in one magnetic piece 100 is located at the upper right of the mounting groove 140, and the magnetic attractor 130 in the other magnetic piece 100 is located at the lower left of the mounting groove 140.

[0058] In some embodiments, the magnetic attractor 130 may be a magnet, and the magnetic attractor 130 may be cylindrical in shape.

[0059] In this embodiment, the magnetic attractor 130 is defined. Specifically, the magnetic attractor 130 is a magnet, and its shape is cylindrical. The magnet has north and south poles. When two magnetic pieces 100 approach each other, if the magnetic attractors 130 on the side approaching each other have the same pole, a repulsive force will be generated between the two magnetic attractors 130. Since the magnetic attractor 130 is cylindrical and there is a gap between the magnetic attractor 130 and the wall of the mounting groove 140, the magnetic attractor 130 can rotate within the mounting groove 140 under the action of the repulsive force until the side approaching each other has opposite poles. At this point, the two magnetic attractors 130 are magnetically attracted to each other, thereby magnetically connecting the two magnetic pieces 100.

[0060] In some embodiments, the first housing 110 and the second housing 120 are optionally polygons of the same shape, and at least two of the plurality of mounting slots 140 are sequentially arranged along either side of the first housing 110 and the second housing 120.

[0061] In this embodiment, the structure of the first housing 110 and the second housing 120 is further defined. The first housing 110 and the second housing 120 are polygons of the same shape. At least two of the plurality of mounting slots 140 are sequentially arranged along either side of the first housing 110 and the second housing 120. That is, at least two magnetic attractors 130 are mounted on either side of the magnetic sheet 100. Understandably, if only one magnetic attractor 130 is mounted on one side of the magnetic sheet 100, then when another magnetic sheet 100 is magnetically connected to it, there is only one connection point between the two magnetic sheets 100, which is the individual magnetic attractor 130. This can lead to relative twisting between the two magnetic sheets 100, preventing stable relative rotation, and also results in an unstable connection between the two magnetic sheets 100. Therefore, this application provides at least two magnetic attractors 130 on each side of the magnetic sheet 100, with the at least two magnetic attractors 130 sequentially arranged along the edge of the magnetic sheet 100. In this way, at least two connection points can be formed between the two magnetic sheets 100, and these connection points are distributed along the edges of the magnetic sheets 100, allowing them to form a pivot point and thus enabling rotational connection. This ensures smooth relative rotation between the two magnetic sheets 100 without relative twisting. Furthermore, the increased number of magnetic attraction points between the two magnetic sheets 100 improves the stability of the connection.

[0062] In one possible embodiment, both the first housing 110 and the second housing 120 are square, and the magnetic absorbing sheet has a square structure. Each side of the magnetic absorbing sheet is provided with two magnetic elements 130, and there is a certain distance between the two magnetic elements 130. The first housing 110 and the second housing 120 can also be rectangular or hexagonal.

[0063] Furthermore, the first housing 110 and the second housing 120 are axially symmetric polygons, meaning they have an axis of symmetry that is also the axis of symmetry of the magnetic sheet 100. Multiple magnetic attractors 130 are symmetrically distributed with respect to the axis of symmetry of the first housing 110 and the second housing 120. This ensures that the magnetic sheet 100 experiences balanced force overall.

[0064] In one possible embodiment, such as Figure 2 and Figure 3 As shown, both the first housing 110 and the second housing 120 are square. The magnetic sheet 100 contains eight magnetic attractors 130, which are symmetrically distributed with respect to the axis of symmetry of the first housing 110 and the second housing 120. Each side of the magnetic sheet 100 is provided with two magnetic attractors 130.

[0065] In some embodiments, optionally, there is a gap between any magnetic member 130 and the end of the corresponding edge of the first housing 110 and the edge of the second housing 120, the gap being greater than 10 mm.

[0066] In this embodiment, the placement position of the magnetic attractor 130 is defined. The magnetic attractor 130 is positioned away from the end of the side on the magnetic sheet 100 where the magnetic attractor 130 is located. Specifically, there is a gap between any magnetic attractor 130 and the end of the corresponding side of the first housing 110 and the second housing 120, and this gap is greater than 10 mm. Understandably, if the distance between two magnetic attractors 130 is too small, the magnetic fields of the two magnetic attractors 130 will affect each other, thereby affecting the magnetic attraction between the two magnetic sheets 100. By limiting the distance between the magnetic attractor 130 and the end of the corresponding side of the first housing 110 and the second housing 120 to within 10 mm, it is possible to avoid the two magnetic attractors 130 on two adjacent sides of the magnetic sheet 100 being too close together, thereby avoiding mutual interference between the two magnetic attractors 130 on two adjacent sides of the magnetic sheet 100.

[0067] In some embodiments, the first housing 110 and the second housing 120 are optionally welded together, and the first housing 110 and the second housing 120 enclose a closed space; or the magnetic sheet 100 may further include a plurality of connectors for detachably connecting the first housing 110 and the second housing 120.

[0068] In this embodiment, the connection method of the first housing 110 and the second housing 120 is defined. In one possible embodiment, the magnetic sheet 100 includes multiple connectors, and the first housing 110 and the second housing 120 are connected by the connectors. The first housing 110 and the second housing 120 have multiple mutually adaptable connection holes, through which the connectors can pass to connect the first housing 110 and the second housing 120. In one possible embodiment, the connector is a screw, and the connection hole is a threaded hole.

[0069] In another possible embodiment, the first housing 110 and the second housing 120 are welded together. When the first housing 110 and the second housing 120 are welded together, the first housing 110 and the second housing 120 form a closed space, which improves the overall sealing of the magnetic sheet 100 and thus enhances the protection of the magnetic attractor 130.

[0070] In another possible embodiment, the first housing 110 may also be connected to the second housing 120 by an interference fit.

[0071] The second aspect of the technical solution of this application proposes a magnetic splicing teaching device 200, which includes a plurality of magnetic sheets 100 as proposed in the first aspect of this application. Any two magnetic sheets 100 can be magnetically attracted to each other by magnetic attracting members 130 installed on the edge of the magnetic sheet 100. Any magnetic sheet 100 can rotate about the edge of the adjacent magnetic sheet 100 as the axis of rotation.

[0072] like Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, the magnetic splicing teaching device 200 proposed in this application includes multiple magnetic pieces 100. Since each magnetic piece 100 has at least two magnetic attractors 130 on its edge, any two magnetic pieces 100 can be magnetically attracted to each other, and any magnetic piece 100 can rotate about the edge of an adjacent magnetic piece 100. In this way, multiple magnetic pieces 100 can be combined to form various different three-dimensional or two-dimensional shapes, thereby enabling more intuitive teaching.

[0073] The magnetic splicing teaching device 200 proposed in the second aspect of this application, since it includes multiple magnetic sheets 100 proposed in the first aspect of this application, has all the beneficial effects of the magnetic sheets 100 proposed in the first aspect of this application.

[0074] In this utility model, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more unless otherwise explicitly defined. The terms "install," "connect," "join," and "fix" should be interpreted broadly. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "join" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0075] In the description of this utility model, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0076] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0077] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A magnetic sheet, characterized in that, include: First shell; The second housing is connected to the first housing, and the first housing and the second housing together form a plurality of closed mounting grooves, the mounting grooves being close to the edges of the first housing and the second housing; Multiple magnetic attractors are respectively installed in multiple mounting slots, and two magnetic pieces can be magnetically attracted to each other through the magnetic attractors; wherein, the edges of the first housing and the second housing have retaining surfaces, and the retaining surfaces are inclined planes. When the included angle between two magnetically attracted magnetic pieces reaches the retaining angle, the retaining surfaces of the two magnetic pieces are in contact with each other, and one magnetic piece can be supported by the in contact retaining surfaces of the other magnetic piece.

2. The magnetic sheet according to claim 1, characterized in that, The junction of the edge of the first housing and the edge of the second housing forms an arc surface. The retaining surface of the first housing and the retaining surface of the second housing are symmetrically located on both sides of the arc surface and connected to the arc surface. Within the range of the central angle of the arc surface, the thickness of the first shell at any position is the same as the thickness of the second shell at any position. Outside the range of the central angle of the arc surface, along the direction away from the arc surface, the thickness of the first shell and the thickness of the second shell gradually increase.

3. The magnetic sheet according to claim 2, characterized in that, The central angle of the arc surface ranges from 80° to 100°, and the holding angle ranges from 80° to 100°.

4. The magnetic sheet according to claim 2, characterized in that, The angle between the center of the arc surface and the line connecting the two ends of the corresponding holding surface is in the range of 20° to 30°.

5. The magnetic sheet according to any one of claims 1 to 4, characterized in that, The magnetic attractor is a rotating body, and there is a gap between each of the magnetic attractors and the inner wall of the corresponding mounting groove, so that the magnetic attractor can rotate within the corresponding mounting groove.

6. The magnetic sheet according to claim 5, characterized in that, The magnetic attractor is a magnet, and the magnetic attractor is cylindrical in shape.

7. The magnetic sheet according to any one of claims 1 to 4, characterized in that, The first housing and the second housing are polygons of the same shape, and at least two of the plurality of mounting slots are sequentially arranged along either side of the first housing and the second housing.

8. The magnetic sheet according to any one of claims 1 to 4, characterized in that, Each of the magnetic elements has a gap between itself and the end of the corresponding edge of the first housing and the edge of the second housing, the gap being greater than 10 mm.

9. The magnetic sheet according to any one of claims 1 to 4, characterized in that, The first housing and the second housing are welded together, forming a closed space; or The magnetic sheet also includes a plurality of connectors for detachably connecting the first housing to the second housing.

10. A magnetic splicing teaching device, characterized in that, include: A plurality of magnetic sheets as described in any one of claims 1 to 9, wherein any two magnetic sheets are magnetically attracted to each other by magnetic attractors installed on the edges of the magnetic sheets, and any one of the magnetic sheets is rotatable about the edges of adjacent magnetic sheets.

Images