Activity box

Abstract

A movable box includes two pairs of wheels having blind holes, two shafts having ends that are releasably insertable into the blind holes, and a box body that defines a space having a defined volume large enough to accommodate the shafts. The wheels include first magnetic components. The shafts include second magnetic components fixed to each end of each shaft. The shafts have a length spanning the width of the box body, and the box body has two pairs of through holes on two opposite sides to accommodate the shafts such that the shafts pass through the through holes. The two pairs of wheels are rotatably attached to the box body by magnetically coupling the first magnetic components to the second magnetic components, whereby the movable box is configured to be used as a trolley that can roll on a surface.

Description

Technical Field

[0001] The present invention generally relates to toys, and more particularly to an activity box. Background Art

[0002] Children can develop spatial, language, cognitive, and problem-solving skills by playing with toys such as toy building blocks. Such toys are desired to be safe and easy to use. Summary of the Invention

[0003] One aspect of the present invention features an activity box that includes two pairs of wheels with blind holes, the wheels including a first magnetic component; two shafts having two ends that can be releasably inserted into the blind holes, the shafts including a second magnetic component fixed to each end of each shaft; and a box body that defines a space having a defined volume large enough to accommodate the shafts, the shafts having a length spanning the width of the box body, the box body having two pairs of through holes on two opposite sides of the box body to accommodate the shafts such that the shafts pass through the through holes, wherein the two pairs of wheels are rotatably attached to the box body by magnetically coupling the first magnetic component to the second magnetic component, so that the activity box is configured to be used as a trolley that can roll on a surface.

[0004] In some embodiments, the side surface of the box body defines an orifice. In some instances, the activity box further includes a thin string configured to pass through the orifice and be fixed to the orifice. In certain cases, the activity box further includes a latch string that includes a pin, wherein the latch string is configured to pass through the orifice. In some embodiments, the activity box further includes a magnetic cover having five different orifices, each orifice being shaped to fit a component to pass through.

[0005] In some arrangements, the length of the pin is greater than the diameter of the orifice. In some embodiments, the side surface of the box body defines a slot. In some embodiments, the first magnetic component is embedded in the wheel at the bottom of each blind hole. In certain instances, the first magnetic component is a magnet. In certain cases, the second magnetic component is a molded core. In some arrangements, the molded core is a molded steel core.

[0006] Another aspect of the present invention features a movable box, which includes a corner protector having: a rigid plastic core with a pair of walls integrally connected and forming a first right angle therebetween, and a plate perpendicularly extending from the inner surfaces of the pair of walls, the plate having a screw extending from the top surface of the plate; and a shock-absorbing outer surface molded on the rigid plastic core; a box body having two adjacent sides forming a second right angle at a corner recess configured to receive the corner protector; and a wooden brace attached to the two adjacent sides at the corner recess, the wooden brace defining a hole configured to receive the screw, wherein the corner protector provides impact resistance for the movable box.

[0007] In some embodiments, the shock-absorbing outer surface is made of a flexible or bendable material. In some examples, the flexible or bendable material is rubber, silicone, or polyurethane. In some arrangements, the wooden brace provides support for the load or strengthens the second right angle.

[0008] Another aspect of the present invention features a movable box, which includes: a removable panel; a plurality of components designed to cooperate with each other to form a rectangular shape having a size large enough to occupy approximately one-third of the volume of the movable box; a magnetic cover having a periphery embedded with four magnetic elements, the magnetic cover having five different orifices, the shape of each orifice being suitable for a component to pass through, wherein the shape of each component is such that it passes through only one of the five different orifices.

[0009] In some embodiments, the components are shape sorting blocks. In some embodiments, the removable panel has an opening to facilitate removal of the panel. In some arrangements, the plurality of components have three-dimensional geometries. In some examples, the three-dimensional geometries include spheres, cubes, cuboids, cylinders, triangular pyramids, square pyramids, thick plates, tori, triangular prisms, pentagonal prisms, trapezoidal prisms, arches, or any combination thereof. In certain cases, the plurality of components include pins, strings, lanyards, or any combination thereof. In some embodiments, the plurality of components include a first magnetic attraction element and a second magnetic attraction element, wherein the first magnetic attraction element is configured to be magnetically coupled to the second magnetic attraction element.

[0010] Various embodiments of the present disclosure relate to an activity box including a plurality of components. Some activity boxes include magnetic elements, a lid, and a removable panel. Such activity boxes can support children in performing a variety of different activities (e.g., at least 20 or more activities). The complexity of such activities can be increased, making them suitable for children of different ages (e.g., between 12 months and 48 months). In addition, the activity boxes described herein include a plurality of components that can be neatly fitted into the box body for compact storage. In addition, the activity boxes described herein are safe and made of non-toxic materials, and can be easily wiped clean with a damp cloth.

[0011] One or more embodiments of the present invention will be described in detail below with reference to the accompanying drawings. By reading the description, the drawings, and the claims, other features, objects, and advantages of the present invention will become apparent. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a perspective view of the activity box.

[0013] Figure 2 is an exploded perspective view of the activity box.

[0014] Figure 3A is a top view of the activity box when configured to be used as a stroller.

[0015] Figure 3B is Figure 3A a side perspective view of the activity box of

[0016] Figure 4A is a perspective view of the wheel.

[0017] Figure 4B is Figure 4A a cross-sectional view of the wheel of

[0018] Figure 5A is a side view of the axle.

[0019] Figure 5B is Figure 5A a side cross-sectional view of the axle of

[0020] Figure 6A is a top view of the lid.

[0021] Figure 6B is a bottom view of the box body including the corner protection member.

[0022] Figure 6C is a bottom view of the box body without the corner protection member.

[0023] Figure 7A is a perspective view of the box body.

[0024] Figure 7B is a cross-sectional view of a corner of the box body.

[0025] Figure 8 is a perspective view of a corner protection member.

[0026] Figure 9 is a cross-sectional view of the lid.

[0027] Figure 10A is a side view of the box body.

[0028] Figure 10B is a cross-sectional view of the movable box.

[0029] Like reference numerals in the various figures represent like elements. DETAILED DESCRIPTION

[0030] Figure 1 shows a perspective view of the movable box 2. The movable box 2 includes a box body 4 and a lid 6. The box body 4 has a pair of side walls 5, a pair of end walls 7, an open top 9 (shown in Figure 2 ), and a bottom surface 40 (shown in Figure 6B ). In this example, the box body 4 is rectangular; however, the box body 4 can be, for example, square or any other suitable geometric-shaped container. The box body 4 and the lid 6 are made of a non-toxic material (such as wood) and can be coated with a water-based non-toxic coating. In some embodiments, the movable box 2 is made of a plastic material. The lid 6 is also rectangular and has a top surface 11, a bottom surface, a pair of side edges 13, and a pair of end edges 15. The lid 6 defines a first aperture 14a, a second aperture 14b, a third aperture 14c, a fourth aperture 14d, and a fifth aperture 14e. The lid 6 is a shape-sorting lid, and the shape of each aperture is suitable for a component to pass through. These apertures can have any suitable geometric or non-geometric shape. In the Figure 1 illustrated example, the first aperture 14a has a square shape, the second aperture 14b has a circular shape, the third aperture 14c has a triangular shape, the fourth aperture 14d has a pentagon shape, and the fifth aperture 14e has a trapezoid shape. The side walls 5 define a first through hole 8a, a second through hole 8b, a third through hole 8c, and a fourth through hole 8d. The first through hole 8a and the second through hole 8b are defined by one side wall and are located closer to the bottom edge of the box body 4 than to the top edge of the box body 4. Similarly, the third through hole 8c and the fourth through hole 8d are defined by the other side wall of the box body 4 and are located in alignment with the first through hole 8a and the second through hole 8b. The end walls 7 define a first slot 10a and a second slot 10b, and these slots can be used as handles for gripping the movable box 2. The box body 4 further includes a first corner protection member 12a, a second corner protection member 12b, a third corner protection member 12c, and a fourth corner protection member 12d.

[0031] Please refer to Figure 2 , the movable box 2 includes a first plurality of components 16a and a second plurality of components 16b.Figure 2 The exploded view shown depicts the arrangement and nesting order of the lid 6, the first plurality of components 16a, the removable panel 18, the second plurality of components 16b, and the box body 4 during storage. The activity box 2 also includes bags for receiving the first plurality of components 16a and the second plurality of components 16b in case the user chooses not to nest all the components for storage. As Figure 2 shown, each of the plurality of components 16a and 16b is designed to cooperate with each other to form a rectangular shape. Each of the plurality of components 16a and 16b has a large enough size to occupy approximately one-third of the volume of the box body 4 when these components are arranged to cooperate with each other. In some instances, when the first plurality of components 16a and the second plurality of components 16b are both arranged such that each component cooperates with each other, the first plurality of components and the second plurality of components have a large enough size to occupy approximately two-thirds of the volume of the box body 4. In some embodiments, when the first plurality of components 16a and the second plurality of components 16b are both arranged such that each component cooperates with each other, the first plurality of components and the second plurality of components have a large enough size to occupy approximately half, approximately three-quarters, or approximately seven-eighths of the volume of the box body 4.

[0032] The first plurality of components 16a and the second plurality of components 16b have three-dimensional geometric shapes. The three-dimensional geometric shapes include spheres, cubes, cuboids, cylinders, triangular pyramids, square pyramids, thick plates, tori, triangular prisms, pentagonal prisms, trapezoidal prisms, arches, or any combination thereof. For example, as Figure 2 shown, the activity box 2 includes a set of 18 building blocks 70 that can be arranged in a 6×3 array. The activity box 2 also includes the following components: 18 building plates 72, three threading blocks 76, four right-angled triangles 78, four threading beads 80, two arches 82, four figurines 84, five shape sorting blocks 86, four wheels 26, a threading cord 88, and two pins 90. In some instances, the shape of each shape sorting block 86 enables it to pass through only one of the five different apertures 14a, 14b, 14c, 14d, and 14e of the lid 6. The first plurality of components 16a and the second plurality of components 16b can be components that further include a first magnetic attraction element and a second magnetic attraction element. The first magnetic attraction element can be configured to be magnetically coupled to the second magnetic attraction element. In some embodiments, the magnetically couplable components can be magnetically coupled to assume a defined arrangement suitable for storage in the box body 4.

[0033] The movable box 2 includes a removable panel 18 that defines an opening 20. When stored in the box 4, the removable panel 18 can be used to separate the first plurality of components 16a from the second plurality of components 16b. Thus, in use, the removable panel 18 is located above the second plurality of components 16b stored in the box 4, and the first plurality of components 16a are stored on the top surface 19 of the removable panel 18. Alternatively, in some embodiments, during storage in the box 4, the removable panel 18 can be located below the second plurality of components 16b or above the first plurality of components 16a. The opening 20 is defined near the end edge 21 of the removable panel. In some embodiments, the opening 20 can be defined near an end edge opposite the end edge 21, near the center of the removable panel, or in any suitable portion of the removable panel 18. The opening 20 facilitates the user to remove the removable panel 18 from the storage position. In some embodiments, the removable panel 18 can define two, three, four, five, or more openings facilitating removal. The opening 20 has a circular shape; however, the opening 20 can also have any other suitable geometric or non-geometric shape.

[0034] The box 4 further includes an aperture 22 defined by the end wall 7. As Figure 2 shown, the end wall 7 also defines a second slot 10b. As Figure 3A and 3B shown, the movable box 2 can further include a string 30 that can pass through or be fixed to the aperture 22. When the movable box 2 is configured to be used as a trolley that can roll on a surface, the string 30 can be used to pull the movable box 2. The string 30 can be a lanyard 74. In some instances, the lanyard 74 can be a string fixed to a pin. The length of the pin can be greater than the diameter of the aperture 22. In this way, when a user (such as a child 28) passes the string through the aperture 22 and pulls, the pin abuts against the inner surface of the end wall 7 without leaving the aperture 22, and enables the movable box 2 to move along the direction of the pulling force. In some embodiments, the pin is a rod or flat piece made of wood or plastic. In some instances, the pin has a rectangular or cylindrical shape.

[0035] As Figure 3A and 3B shown, when used in the form of a trolley, the movable box 2 includes a first wheel 26a, a second wheel 26b, a third wheel 26c, a fourth wheel 26d, a first shaft 24a, and a second shaft 24b. Figure 4A A perspective view of the wheel 26 having a first surface 27a that also defines a blind hole 32 is shown. Figure 4B Shown along Figure 4ACross-sectional view of the wheel 26 taken along line 34. The blind hole 32 has a depth d starting from the first surface 27a but not penetrating through to the second surface 27b. The wheel 26 includes a first magnetic attraction member 36 embedded within the wheel 26 at the bottom 29 of the blind hole 32. In some embodiments, the first magnetic attraction member 38 is a magnet or a member attracted by a magnet. In some instances, the first magnetic attraction member 36 is made of ferromagnetic material.

[0036] Figure 5A and 5B The shaft 24 is shown, which has a pair of second magnetic attraction members 38 fixed to the first end 31a and the second end 31b of the shaft 24. In some embodiments, the second magnetic attraction members 38 are magnets or members attracted by a magnet. In some examples, the second magnetic attraction members 38 are made of ferromagnetic material. In some embodiments, the second magnetic attraction members 38 are overmolded cores. The overmolded cores can be steel cores. The housing 4 defines a space having a defined volume large enough to accommodate the first shaft 24a and the second shaft 24b. The first shaft 24a and the second shaft 24b have a length l spanning the width w of the housing 4. The housing 4 has two pairs of through holes (i.e., 8a, 8b, 8c, and 8d) in two opposite side walls 5 for receiving the first shaft 24a and the second shaft 24b. Thus, when the movable housing 2 is in the trolley configuration, the first shaft 24a and the second shaft 24b pass through the through holes 8a, 8b, 8c, and 8d. A user (e.g., a child 28) can releasably insert the first ends 31a and the second ends 31b of the first shaft 24a and the second shaft 24b into the blind holes 32 of the first wheel 26a, the second wheel 26b, the third wheel 26c, and the fourth wheel 26d, respectively. Next, the user (e.g., a child 28) can rotatably attach the two pairs of wheels 26 to the housing 4 by magnetically coupling the first magnetic attraction members 36 to the second magnetic attraction members 38 fixed to each end 31a and 31b of each shaft 24. Thus, during the assembly of the trolley configuration, the shaft 24 and the wheels 26 are physically and mechanically engaged. Alternatively, in some embodiments, the shaft can be releasably coupled to the wheel by a snap or clip-on coupler.

[0037] Figure 6A A top view of the top surface 11 of the cover 6 is shown. As described above, the cover 6 has five different apertures (i.e., 14a, 14b, 14c, 14d, and 14e), each aperture being shaped to allow a component to pass therethrough. Figure 6B A bottom view of the housing 4 having a bottom surface 40 and corner protectors 12a, 12b, 12c, and 12d provided at each corner is shown. Figure 6CThe bottom view of the box 4 without the corner protectors 12a, 12b, 12c, and 12d is shown. As can be seen from FIG. 6c, the box 4 has two adjacent side surfaces 42a and 42b that form a right angle α at the corner recess 46. The corner recess 46 is configured to receive the corner protector 12. The box 4 further includes a wooden brace 48 attached to the two adjacent side surfaces 42a and 42b at the corner recess 46. The wooden brace 48 defines a hole 50. The wooden brace 48 provides support for the load, strengthens the right angle α, or provides support for the load and strengthens the right angle α.

[0038] Figure 7A A partially transparent perspective view of the box 4 including the corner protectors 12a, 12b, 12c, and 12d is shown. The corner protectors 12a, 12b, 12c, and 12d are designed to be non - releasably coupled to the outer surface of each corner of the box 4. Figure 7B Shows a cross - sectional view taken along Figure 7A the line 54. As Figure 7B shown, the screw 52 of the corner protector 12 is non - releasably inserted (e.g., glued) into the hole 50. Thus, the hole 50 is configured to receive the screw 52.

[0039] Please refer to Figure 8 , the corner protector 12 has a hard plastic core having a first wall 58a and a second wall 58b, which are integrally connected and form a first right angle α therebetween. The hard plastic core can be made of nylon, polyamide, or any other suitable material. The corner protector 12 further includes a plate 56 extending perpendicularly from the first inner surface 60a and the second inner surface 60b of the first wall 58a and the second wall 58b. The plate 56 has a screw 52 extending from the top surface 62 of the plate 56. The corner protector 12 further includes a shock - absorbing outer surface molded on the hard plastic core. The shock - absorbing outer surface provides impact resistance for the movable box 2. Thus, the corner protector 12 enables the movable box 2 to withstand foreseeable use, damage, or abuse by children, such as the impact of the movable box 2 against an impact medium (e.g., the ground). In some embodiments, the shock - absorbing outer surface is made of a flexible or bendable material. Non - limiting examples of flexible or bendable materials include rubber, silicone, and polyurethane. In some embodiments, the rubber material can be a thermoplastic rubber. In some embodiments, the manufacturing materials of the shock - absorbing outer surface include, but are not limited to, thermoplastic polyurethane, thermoplastic rubber, and thermoplastic elastomer.

[0040] Please refer to Figure 9 , the lid 6 is a magnetic lid having a side edge 13, and a first magnetic element 64 is embedded in the side edge 13. The lid 6 can be a magnetic lid having a perimeter or edge with more than one magnetic element embedded therein. In this example, the lid 6 has four magnetic elements 64 embedded within the side edge 13. As Figure 10AAs shown in the cross-sectional view of the box body 4, the box body 4 further includes four magnetic elements 66. The magnetic elements 66 are embedded in the upper edge 68 of the side wall 5. The magnetic elements 64 and 66 are arranged such that they are partially or fully aligned to facilitate magnetic coupling between the lid 6 and the box body 4 when the lid 6 is placed on top of the box body 4. In Figure 10B the illustrated example, the magnetic elements 64 and 66 are aligned with the through holes 8a and 8d. In some embodiments, the magnetic elements 64 and 66 can be located within any suitable portion of any edge of the lid 6 and the box body 4, respectively. In some embodiments, the magnetic elements 64 and 66 are magnets or components attracted by magnets. In some instances, the magnetic elements 64 and 66 are made of ferromagnetic materials. In some embodiments, the magnetic element 66 is a ferromagnetic screw or a magnetic screw. In some embodiments, the magnetic element 64 is a semi-circular or circular magnet.

[0041] During play, the activity box 2 can be used in different configurations and different activities suitable for children of different ages in terms of complexity and appropriateness can be carried out. For example, by placing the lid 6 on top of the box body 4, the activity box 2 can be used as a shape sorting box. Then, the user (such as a child) can match the shape of the shape sorting block 86 with the shapes of the apertures 14a, 14b, 14c, 14d, and 14e, and then drop the shape sorting block 86 through the apertures. In another example, the user (such as a child) can arrange the figurines 84 and use the remaining components of the activity box 2 to build a house-like structure to play "house" with the activity box 2. In another example, during play, the user (such as a child) can use the plurality of components 16a and 16b to build an upward structure (such as a tall tower).

[0042] In some embodiments, the removable panel 18 can be made of a light-transmitting material (such as transparent plastic). In another example, during play, the user (such as a child) can sort the plurality of components 16a and 16b by color, shape, etc.

[0043] In another instance, during play, a user (e.g., a child) may use the plurality of components 16a and 16b to create patterns (e.g., placing one type of component next to another type of component and repeating the structure in sequence). In another instance, during play, a user (e.g., a child) may use the plurality of components 16a and 16b with the construction board 72 to create a domino track. In another instance, during play, a user (e.g., a child) may arrange the plurality of components 16a and 16b into a shape similar to a letter of the alphabet. In another instance, during play, a user (e.g., a child) may magnetically couple the wheel 26 and use the removable panel 18 as a ramp for the wheel 26 to roll on. In another instance, during play, a user (e.g., a child) may use the pin 90 as a "drumstick" to strike the bottom surface 40 of the box 4. As previously described, during play, a user (e.g., a child) may use the movable box 2 in the form of a trolley, where the plurality of components 16a and 16b may be loaded into the space defined by the box 4.

[0044] In another instance, during play, a user (e.g., a child) may thread the string 88 through the threading beads 80 and create patterns. Threading can promote hand-eye coordination and the use of both hands. In another instance, during play, a user (e.g., a child) may use the space defined by the box 4 as an "empty room" and thus use the plurality of components 16a and 16b to build a house-like structure. In another instance, during play, a user (e.g., a child) may use the plurality of components 16a and 16b to construct or create faces and expressions. Constructing faces with the plurality of components 16a and 16b can help children strengthen their awareness of their own sensations, which is an early step in building self-regulation. In another instance, during play, a user (e.g., a child) may use the plurality of components 16a and 16b to build more elaborate three-dimensional structures (e.g., tower-like, bridge-like, or city-like structures).

[0045] In another example, during play, a user (e.g., a child) may use the plurality of components 16a and 16b to practice hurdling (e.g., by placing the pin end of the thread 88 in the first wheel 26a and the buckle end of the thread 88 in the second wheel 26b). In another example, during play, a user (e.g., a child) may use the plurality of components 16a and 16b to create a path for the figurine 84 by arranging the construction board 72 on a surface. By arranging objects and creating a path, a child can establish spatial relationships (e.g., by learning that multiple objects can be connected on a plane to build a larger object). In another example, during play, a user (e.g., a child) may use the plurality of components 16a and 16b to learn how to count (e.g., by building a tall tower with one or more building blocks 70). In another example, during play, a user (e.g., a child) may use the plurality of components 16a and 16b to build a tower-like structure. In another example, during play, a user (e.g., a child) may use a marker to draw or write on a removable panel made of a transparent plastic material).

[0046] Although several examples have been illustrated for purposes of explanation, the foregoing description is not intended to limit the scope of the invention, which is defined only by the scope of the appended claims. There may be other examples and other modifications within the scope of the appended claims.

Claims

1. An activity box, comprising: A box body having a bottom surface, a pair of opposite side walls, and a pair of opposite end walls, the opposite side walls and end walls extending upward from the bottom surface and defining an internal space, the box body comprising: Corner protection members, which include: A hard plastic core having a pair of walls integrally connected and forming a first right angle therebetween; A plate vertically extending from the inner surfaces of the pair of walls, the plate having a screw extending from the top surface of the plate; and A shock-absorbing outer surface molded on the hard plastic core, the shock-absorbing outer surface providing impact resistance to the box body, Wherein, the side walls and end walls of the box body form a second right angle at a corner recess, the corner recess being configured to receive the corner protection members; and A wooden brace attached to the side walls and end walls at the corner recess, the wooden brace defining a hole configured to receive the screw.

2. The activity box according to claim 1, wherein the shock-absorbing outer surface is made of a flexible material.

3. The activity box according to claim 2, wherein the flexible material is rubber, silicone, or polyurethane.

4. The activity box according to any one of claims 1-3, wherein the wooden brace is configured to provide support to the load of the box body or strengthen the second right angle.

5. The activity box according to any one of claims 1-3, wherein the corner protection members are configured to be irreversibly coupled to the corner recesses.

6. The activity box according to any one of claims 1-3, wherein the corner recesses are configured to receive a pair of walls of the corner protection members.

7. The activity box according to claim 1, wherein the activity box further comprises: A lid having a first magnetic element embedded within the thickness of the lid and within the side edges of the lid, wherein the first magnetic element is configured to align and magnetically couple with a second magnetic element embedded within the upper edge of the side wall when the lid covers the box body.

8. The activity box according to claim 7, wherein each of the pair of opposite side walls defines a pair of through holes.

9. The activity box according to claim 7 or 8, wherein the corner recesses are configured to receive the pair of walls of the corner protection members.

10. The movable box according to claim 1, wherein, The activity box further comprises: A plurality of toy blocks configured to fit together to form a rectangular shape; and A lid, the lid having a first magnetic element embedded within the thickness of the lid and within the side edges of the lid, the lid defining five different holes shaped to receive the toy blocks passing through them, Wherein, the rectangular shape occupies one-third of the volume of the box body, and Wherein the first magnetic element is configured to align and magnetically couple with a second magnetic element embedded within the upper edge of the side wall of the box body when the lid covers the box body.

11. The activity box according to claim 10, further comprising a removable panel defining an opening configured to facilitate removal of the removable panel from within the box body.

12. The activity box according to claim 10 or 11, wherein each of the plurality of toy blocks has a three-dimensional geometric shape.

13. The movable box according to claim 12, wherein the three-dimensional geometry includes a sphere, a cube, a cuboid, a cylinder, a triangular pyramid, a square pyramid, a thick plate, a torus, a triangular prism, a pentagonal prism, a trapezoidal prism, an arch, or any combination thereof.

14. The movable box according to claim 10 or 11, wherein the plurality of toy blocks includes pins, strings, latch strings, or any combination thereof.

15. The movable box according to claim 10 or 11, wherein the plurality of toy blocks includes a first magnetic attraction element and a second magnetic attraction element, wherein the first magnetic attraction element is configured to be magnetically coupled to the second magnetic attraction element.

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