Panel having soft magnetic body, and installation method of nonmagnetic wall of panel

Abstract

To provide a panel having a soft magnetic material plane for changing a non-magnetic wall surface such as a gypsum board or a wooden wall which is not attracted by a magnet originally into a wall surface attracted by the magnet, which has a simple structure, is lightweight, can be manufactured at a low cost, and can be easily installed on the non-magnetic wall surface.SOLUTION: A panel P1 includes a thin soft magnetic plate made of a soft magnetic material, and has a triangular or polygonal plane 4. At least two sides of the plane 4 each have a side surface 7b bent at an angle of 20 degrees or more and 60 degrees of less from the plane 4, and the soft magnetic plate forming the side surface 7b is further bent so as to be parallel to the plane 4 to form a bottom 8b.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a panel having a flat surface made of soft magnetic material and a method for installing the panel on a non-magnetic wall, and more particularly to a panel having a flat surface that holds an article by magnetic attraction, and a method for installing the panel on a non-magnetic wall to transform the non-magnetic wall surface to which magnets would not normally be attracted into a wall surface to which magnets can be attracted. [Background technology]

[0002] In recent years, magnetic panels have become popular. Magnetic panels are wall materials that attract magnets, and when used as a wall surface, items with magnets on the back side, such as picture frames, whiteboards, and shelves, can be attached and detached freely by magnetic force. Magnetic panels do not require parts such as mounting brackets to attach these items, and no tools are required for attachment, so the original state of the wall surface can be maintained and the arrangement can be freely and easily changed (see Patent Document 1). A magnetic panel is achieved by, for example, attaching or mounting a soft magnetic material to a non-magnetic substrate. The panel is said to be flame retardant or non-combustible, and the non-magnetic substrate provides the rigidity of the panel. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2017-36650 A [Patent Document 2] Utility Model Registration No. 3140291 DISCLOSURE OF THEINVENTION [Problem to be solved by the invention]

[0004] On the other hand, in order to transform a non-magnetic wall surface such as a plasterboard or a wooden wall, which originally did not attract magnets, into a wall surface that attracts magnets, the main method is to fix a magnetic panel to the existing non-magnetic wall with screws or nails. For example, Patent Document 2 discloses a wall structure that can attach heavy objects to a wall such as a plasterboard with high strength. In this wall structure, a fixing pin is driven at an angle, and at that time, a metal fitting with a pilot hole for a guide is attached and driven. This technology can also be used to attach the magnetic panel, but since a separate metal fitting is required, the number of parts is large, the structure becomes complicated, and the overall weight and cost increase. In addition, it is time-consuming to drive the pin at an appropriate angle.

[0005] The present invention has been made in view of the above circumstances, and its object is to provide a panel having a flat soft magnetic surface that transforms non-magnetic wall surfaces such as plasterboards and wooden walls, which magnets would not normally be attracted to, into wall surfaces that magnets can attract, which has a simple structure, is lightweight, inexpensive to manufacture, and can be easily installed on non-magnetic wall surfaces. [Means for solving the problem]

[0006] The present invention takes the following measures to solve the above problems. Note that the reference characters in parentheses attached to each component means in this section (the "Means for Solving the Problems" section) are for reference purposes only to show the corresponding relationship with the specific means described in the representative embodiments described below, and are not intended to limit the components of the present invention to these.

[0007] One aspect of the present invention is a panel (P1, P2, P3) comprising a thin soft magnetic plate made of a soft magnetic material, characterized in that it has a triangular or polygonal plane (4, 41) and has side surfaces (7, 71) bent at least on two sides of the plane (4, 41) at an angle of 20 degrees to 60 degrees from the plane (4, 41), and the soft magnetic plate forming the side surfaces (7, 71) is further bent so as to be parallel to the plane (4, 41) to form a bottom surface (8, 81).

[0008] In another aspect of the present invention, the side surface (7, 71) is characterized by having a small hole (3, 31) penetrating the side surface from the front surface to the back surface.

[0009] In another aspect of the present invention, the tip (80, 810) of the bottom surface (8, 81) is located in a direction perpendicular to the side surface (7, 71) from the position of the small hole (3, 31) provided in the side surface (7, 71).

[0010] In another aspect of the present invention, the panels (P1, P2, P3) are made by manufacturing soft magnetic plates having the development views thereof by a process such as punching, and then bending the soft magnetic plates.

[0011] In another aspect of the present invention, a reinforcing material (2, 21) such as plastic, a foamed plastic material, or wood is attached to the back side of the flat surface (4, 41).

[0012] In another aspect of the present invention, the surface of the soft magnetic plate is coated or painted.

[0013] Another aspect of the present invention is characterized in that an opening (16) is provided in a portion of the plane (4) of the soft magnetic plate, and a ferromagnetic sheet (40) is attached to a non-opening portion (17) in the plane (4) so ​​as to cover this opening (16).

[0014] In another aspect of the invention, there is provided a method for installing a panel (P1, P2, P3) on a non-magnetic wall surface (5, 51), characterized in that the tip of a pin (6) or nail is passed through a small hole (3, 31) in the side surface (7, 71) to locate the tip (80, 810) of the bottom surface (8, 81) and the pin (6) or nail is pressed into the non-magnetic wall surface (5, 51). Effect of the Invention

[0015] According to the present invention, a panel having a flat soft magnetic surface that transforms a non-magnetic wall surface, such as a plasterboard or wooden wall to which magnets would not normally be attracted, into a wall surface to which magnets can be attracted has a simple structure, is lightweight, inexpensive to manufacture, and can be easily installed on a non-magnetic wall surface. [Brief description of the drawings]

[0016] [Figure 1] 1 is an external perspective view showing an example of use of a panel according to a first embodiment of the present invention. [Diagram 2] FIG. 2 is a perspective view showing the structure of a panel of the first embodiment, where (a) shows a view from the front side and (b) shows a view from the back side. [Diagram 3] 1A and 1B are two-dimensional views of the panel of the first embodiment as viewed from three directions, in which (a) is a front cross-sectional view, (b) is a plan view as viewed from the front side, and (c) is a bottom view as viewed from the back side. [Figure 4] 5A to 5C are side cross-sectional views showing a procedure for installing the panel of the present invention on a non-magnetic wall surface. [Diagram 5] 13 is a side cross-sectional view for explaining the state when an article is tethered to the panel by a magnet after installation. FIG. [Figure 6] FIG. 11 is a development view of a soft magnetic sheet of a panel according to the second embodiment. [Figure 7] 13 is a perspective view showing a state in which a panel of a second embodiment is installed on a non-magnetic wall surface forming a side surface of a cylinder. FIG. [Figure 8] 11A and 11B are perspective views of a panel according to a third embodiment, in which FIG. 11A shows an external view and FIG. [Figure 9] 13A and 13B are perspective views of modified examples of a main body portion used in the panel of the third embodiment, where FIG. 13A shows a first modified example, and FIG. 13B shows a second modified example. [Figure 10] 1A and 1B are perspective views showing a panel removal aid, in which FIG. 1A shows a state before a panel is removed, and FIG. 1B shows a state when the panel is removed. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0017] [First embodiment] FIG. 1 is an external perspective view showing an example of use of the panel P1 of the first embodiment of the present invention. FIG. 2 is an external perspective view showing the structure of the panel P1 of the first embodiment, in which (a) is a view from the front side, i.e., the side where the article is magnetically attracted, and (b) is a view from the back side, i.e., the side in contact with the non-magnetic wall surface. FIG. 3 is a two-dimensional view of the panel P1 of the first embodiment when viewed from three directions, in which (a) is a front cross-sectional view, (b) is a plan view of the panel P1 of (a) in the direction of the arrow A, i.e., from the front side, and (c) is a bottom view of the panel P1 of (a) in the direction of the arrow B, i.e., from the back side. FIG. 4 is a side cross-sectional view showing the procedure for installing the panel P1 of the present invention on the non-magnetic wall surface 5, and FIG. 5 is a side cross-sectional view for explaining the state when an article L is tethered to the panel P1 by a magnet after installation. Note that hatching is omitted in the cross-sectional views. In addition, in these drawings, the covering materials and paint on the panel surface are omitted. Also, even if the reference numerals are the same, lowercase alphabets such as "a" and "b" are added immediately after the reference numerals in order to make it easier to understand when they are particularly distinguished in relation to the explanation or other drawings. Also, in this specification, "magnetic adhesion" may be referred to simply as "magnetic adhesion."

[0018] Panel P1, as shown in Figure 1, is attached to a non-magnetic wall surface 5 such as a plasterboard or wooden wall to transform a wall surface that would not normally attract magnets into one that attracts magnets, that is, a wall surface (magnetic wall surface) that uses magnetic attraction to hold an item L, and has a main body 1 and a reinforcing material 2 as shown in Figures 2 and 3. The item L may be an item with a magnetic sheet or sintered magnet attached to the back side, such as a hook, an accessory, or a shelf for storing small items. The main body 1 is made of a soft magnetic plate of a predetermined thickness, and as shown in Figures 2 and 3, has a plane 4, side surfaces 7a arranged as a pair on both the top and bottom of the plane 4, side surfaces 7b arranged as a pair on both the left and right of the plane 4, bottom surfaces 8a arranged as a pair above and below the plane 4, and bottom surfaces 8b arranged as a pair on the left and right of the plane 4.

[0019] The soft magnetic plate used in the present invention is made of magnetic steel (eg, SS400), magnetic stainless steel (eg, SUS416), etc., and although there are no particular limitations on its thickness, a thickness of 0.2 to 0.5 mm is particularly preferred. If the sheet is too thick, the mechanical strength is sufficient, but it becomes difficult to process the sheet into a panel and it is heavy, which is undesirable.On the other hand, if the sheet is too thin, the sheet becomes light and easy to process by punching or bending, but the mechanical strength decreases and the magnetic attraction of the permanent magnet to the panel also tends to decrease, making it difficult to achieve the object of the present invention. In the embodiment described later, a rolled magnetic steel plate having a thickness of 0.35 mm was used.

[0020] The soft magnetic plate may be surface-finished or painted before being processed into a panel, but may also be surface-finished or painted at a finishing stage after processing. However, if the thickness of the covering material or paint exceeds 0.2 to 0.3 mm, the magnetic attraction force may decrease depending on the type of permanent magnet that is magnetically attached to the panel.

[0021] As shown in FIG. 3, the plane 4 has a rectangular shape with a long side 40a and a short side 40b, and the front side is the surface that attracts the magnet. The pair of side surfaces 7a are inclined at a certain angle (about 50 degrees, see θ in FIG. 5) by bending the opposing long sides 40a on the plane 4 toward the rear side, forming an isosceles trapezoidal shape that flares outward when viewed from the long sides 40a. The pair of side surfaces 7b are inclined at a certain angle (about 50 degrees) by bending the opposing short sides 40b of the plane 4 toward the rear side, forming an isosceles trapezoidal shape that flares outward when viewed from the short sides 40b. These angles are about 50 degrees, but may be any angle between 20 degrees and 60 degrees. The pair of bottom surfaces 8a are parallel to the plane 4 by bending opposing long sides 70a of the side surface 7a backward, and form an isosceles trapezoidal shape tapering toward the end as viewed from the long sides 70a. The pair of bottom surfaces 8b are parallel to the plane 4 by bending opposing short sides 70b of the side surface 7b backward, and form an isosceles trapezoidal shape tapering toward the end when viewed from the short sides 70b.

[0022] Here, the pair of bottom surfaces 8a and the pair of bottom surfaces 8b are on the same plane parallel to the plane 4. The side surfaces 7a and 7b are provided with small holes 3a and small holes 3b that penetrate from the front side to the back side at a 90 degree angle, respectively. The upper side surface 7a has five small holes 3a that are equally spaced along a straight line along the length direction of the isosceles trapezoid, and the lower side surface 7a has three small holes 3a that are equally spaced along a straight line along the length direction of the isosceles trapezoid. The left and right side surfaces 7b have three small holes 3b that are equally spaced along a straight line along the length direction of the isosceles trapezoid.

[0023] 5, tip 80a of bottom surface 8a is located in a direction perpendicular to side surface 7a from small hole 3a, and tip 80b of bottom surface 8b is located in a direction perpendicular to side surface 7b from small hole 3b. In other words, tip 80a of bottom surface 8a is disposed in the direction of central axis 14a of small hole 3a, and tip 80b of bottom surface 8b is disposed in the direction of central axis 14b of small hole 3b. The small holes 3a and 3b are holes for inserting a pin 6 (see FIG. 4) that is sharpened and has a large-diameter head at its rear end, in order to fix the pin to the non-magnetic wall surface 5.

[0024] The reinforcing material 2 is incorporated into the back side of the flat portion of the panel P1. The reinforcing material 2 is a plate material such as plastic or its foam, or wood, and preferably has a low specific gravity. The reinforcing material 2 is a plate-like body that prevents the flat surface 4 from deforming unstably, and is fixed to the back side of the flat surface 4 with, for example, double-sided adhesive tape or adhesive, thereby increasing the mechanical strength of the panel P1. The reinforcing material 2 has a bottom surface that is rectangular or slightly smaller in area than that, which can be formed by the ends 80a, 80b of the bottom plate 8 on the back side (see FIG. 3).

[0025] Next, a method for installing the panel P1 of the present invention on the non-magnetic wall surface 5 will be described. In Fig. 4, after deciding the position on the non-magnetic wall surface 5 where the panel P1 of the present invention is to be installed, while supporting the panel P1 with one hand, insert the pin 6 into the small hole 3a in the side surface 7a with the other hand, and locate the tip of the pin 6 to the tip 80a of the bottom surface 8a. At this time, make sure that the pin 6 is approximately perpendicular to the side surface 7a where the small hole 3a is drilled. Once confirmed, push the head of the pin 6 vertically toward the side surface 7a. You can ask someone else to push and drive the pin in, but if the non-magnetic wall surface 5 is plasterboard, for example, you can place a 10 yen coin against it and push it in with your finger.

[0026] The pin 6 at the bottom of FIG. 4 is shown pressed into the non-magnetic wall surface 5 . FIG. 5 shows a state in which a panel P1 is installed on a non-magnetic wall surface 5, and a relatively light weight W of an article L is attached to the panel P1 and hangs downward. Since the soft magnetic plate has rigidity, the weight W is transmitted to the pin 6 that is in contact with the bottom surface 8a at the tip 80a, and is supported by the pin 6 fixed to the wall surface. The pin 6 is angled upward by 20 degrees or more relative to the wall surface, so it can provide firm support.

[0027] It is preferable to provide many small holes 3 for passing the pins 6 on the upper (vertical) side surface 7a of the installed panel P1, because the more pins 6 that are pushed in, the greater the load resistance. On the other hand, it is important to fix at least the other side surfaces 7 with pins 6. This is because panel P1 will be fixed at the apexes of a triangle formed by both ends of pins 6 aligned in a straight line above plane 4 and other points not on the straight line. For this reason, in panel P1, pins 6 are passed through small holes 3a on lower side surface 7a and small holes 3b on side surface 7b in the same manner.

[0028] The panel P1 of the present invention is made by cutting a magnetic steel plate or magnetic stainless steel plate of a specified thickness into a specified shape by laser irradiation or punching, and then bending it. The small holes 3 to be provided on the side surface 7 are also opened at this time.

[0029] The plane 4 of the panel P1 of the present invention is surrounded by at least two straight edges, namely the long side 40a and the short side 40b. The shape may be a square, rectangle, rhombus, or polygon with pentagons or more, or a triangle, but may also have curved parts. Incorporating curved parts allows for a variety of design expressions, making wall designs and exhibits more impactful. However, it is physically impossible to simply bend the parts that correspond to the sides of the curved parts, and separate measures are required. It is also an option to not form the side 7.

[0030] As described above, the panel P1 of the present invention is based on the premise that the pins 6 are pressed into the non-magnetic wall surface 5 to be secured thereto. However, since the reverse side of the bottom surface 8 is flat, it can be conveniently and easily installed on a wall surface where the pins 6 are not useful, using a double-sided adhesive sheet or adhesive.

[0031] Before installing the panel P1 on a non-magnetic wall, it is preferable to apply protective tape 13 (see Fig. 1) to the areas 12 where the ends of the soft magnetic plate are adjacent, the folded areas 10, and the areas 9 where the folded areas are adjacent (see Figs. 3(b) and (c)). This is to prevent injury during installation due to burrs and corners that arise during the production of the panel P1.

[0032] Thus, with panel P1, by passing pin 6 through small hole 3 in side surface 7, locating tip 80 on bottom surface 8, and pushing it in at this point, the inclination angle of pin 6 can be adjusted appropriately, allowing for reliable and easy installation. Also, flat surface 4, which serves as the magnet's attraction surface, and side surface 7, which is the part for fixing flat surface 4, are made of a single piece, making the structure simple, lightweight, and inexpensive to manufacture.

[0033] Second Embodiment The panel of the present invention can be adapted to the side surface of a cylindrical pillar. Fig. 6 is a development of the main body 11 of the panel P2 of the second embodiment. Fig. 7 is a diagram showing the state in which the panel P2 of the second embodiment is installed on a non-magnetic wall surface 51 forming the side surface of a cylinder. The main body 11 in the development shown in Fig. 6 is made of the same material as that used in the first embodiment.

[0034] As shown in FIG. 7, the panel P2 has a main body portion 11 and a reinforcing member 21. As shown in the development of Fig. 6, the main body 11 includes a plane 41, a side surface 71a provided on the upper side of the plane 41, a pair of side surfaces 71b provided as a pair on both the left and right sides of the plane 41, a bottom surface 81a provided at the end of the side surface 71a, and a pair of bottom surfaces 81b provided as a pair on both the left and right sides at the end of the pair of side surfaces 71b. This development is folded to obtain a substantially flat shape as shown below. In the explanation of Figs. 6 and 7, the surface indicated by the reference numeral "41" is not strictly a plane but a side surface of a cylinder, i.e., a "curved surface", but for convenience in this specification, it is called a "plane".

[0035] The plane 41 is a rectangular plane body, and the front side serves as a magnetic attraction surface for a magnet. The side surface 71a is inclined at a certain angle (about 50 degrees) by bending one of the long sides of the plane 41 toward the back side at the center thereof, and forms an isosceles trapezoidal shape tapering toward the end when viewed from the long side. The pair of side surfaces 71b are inclined at a certain angle (about 50 degrees) by bending opposing short sides of the plane 41 toward the rear side, forming a rectangular shape. The bottom surface 81a is parallel to the plane 41 by bending the short side of the side surface 71a toward the rear side, forming a rectangular shape. The pair of bottom surfaces 81b are formed in a rectangular shape by bending opposing long sides of the side surface 71b backward so as to be parallel to the plane 41.

[0036] Here, the bottom surface 81a and the pair of bottom surfaces 81b are on the same plane parallel to the plane 41. The side surface 71a and the side surface 71b are provided with small holes 31a and 31b penetrating from the front side to the back side at an angle of 90 degrees. A tip 810a of the bottom surface 81a is located in a direction perpendicular to the side surface 71a from the small hole 31a, and a tip 810b of the bottom surface 81b is located in a direction perpendicular to the side surface 71b from the small hole 31b. The small holes 31a and 31b are holes for inserting headed pins 6 for fixing to the non-magnetic wall surface 51 (only a portion of the small hole 31b is shown in FIG. 7). Such a panel P2 can be installed on the curved surface of a cylinder by bending and curving the flat surface 41 and the reinforcing material 21. The side surface 71a and bottom surface 81a of the curved portion have a shape, for example, as shown by reference numeral 15 in FIG. 6, in accordance with the curvature of the curve and the thickness of the panel P2.

[0037] The side surface 71a and bottom surface 81a corresponding to the curved portion are bent at the end portions of the flat surface 41. As a result, the end portions of the flat surface 41 cannot be curved along the curved surface of a cylinder, and are inevitably slightly distorted. 6, the curved portion may have only one side surface 71a and one bottom surface 81a, or may not have any. In this figure, an example is shown in which the other sides (opposite sides) of the plane 41 are omitted.

[0038] The load applied to this panel P2 can be fully supported by the pins 6 pushed in through the small holes 31 in the side surface 71. As shown in Figure 7, the flat surface 41 is curved along the side surface of the cylinder, and furthermore, a reinforcing material 21 is attached between the cylindrical wall surface 51 and the flat surface 41, thereby increasing the mechanical strength.

[0039] Third Embodiment The panel of the present invention can use not only a soft magnetic plate made of metal but also a soft magnetic sheet as the magnetic surface. Figure 8 is a perspective view of the panel P3 of the third embodiment, where (a) shows the external view and (b) shows an exploded view. The panel P3 of the third embodiment differs from the panel P1 of the first embodiment in the following respects: The panel P3 has a main body portion 111 instead of the main body portion 1 in the panel P1, and also has a soft magnetic sheet .

[0040] The main body 111 has an opening 16 penetrating from the front side to the back side on the flat surface 4 of the main body 1, but the other configurations, i.e., the side surface 7, bottom surface 8, and each small hole 3, are the same as those of the panel P1. The same is true for the reinforcing material 2. The soft magnetic sheet 40 is fixed to the non-opening portion (the edge portion surrounding the opening 16) 17 on the plane 4 so as to cover the opening 16. For example, an adhesive is used for the fixing. The soft magnetic sheet 40 does not itself have the properties of a permanent magnet, but is a flexible sheet to which a magnet can be attracted; it is made by forming a mixture of fine powder of soft magnetic material and a small amount of organic polymer elastomer that acts as a binder into a sheet having a thickness of 0.5 to 2 mm by a forming method such as rolling or extrusion.

[0041] As the soft magnetic material powder, a ferromagnetic material with low coercivity and high permeability (hereinafter referred to as "ferromagnetic material powder") among ferromagnetic materials, a ferromagnetic material with low coercivity and high permeability (hereinafter referred to as "ferrimagnetic material powder") among ferrimagnetic materials, or a mixture of ferromagnetic material powder and ferrimagnetic material powder can be used. As the ferromagnetic material powder, iron powder, magnetic stainless steel powder, sendust powder, etc. can be used. As the ferrimagnetic material powder, soft ferrite such as manganese zinc ferrite powder, nickel zinc ferrite powder, magnetite powder = black iron oxide powder, etc. can be used.

[0042] Examples of the small amount of organic polymer elastomer that can be used as the binder include chlorinated polyethylene, chlorosulfonated polyethylene, ethylene-vinyl acetate copolymer, ethylene-propylene rubber, nitrile rubber, acrylic rubber, and chloroprene rubber. For example, Iron Sheet (registered trademark) manufactured by the applicant company is used as the soft magnetic sheet 21. It is also possible to use a magnetic sheet in which a mixture of fine powder of a hard magnetic material and an organic polymer elastomer that is the binder is formed into a sheet and at least one surface of the sheet is magnetized, instead of the soft magnetic sheet 21. In other words, any ferromagnetic sheet will do.

[0043] In the panel P3 of the third embodiment, the magnetic attraction function of the plane 4 in the panel P1 of the first embodiment is taken over by the soft magnetic sheet 40. That is, the surface 42 of the soft magnetic sheet 40 becomes the attraction surface of the magnet. The soft magnetic sheet 40 has a smaller specific gravity than a metal plate and can provide a relatively strong magnetic force even with the same thickness, making it possible to reduce the weight of the panel.

[0044] In addition, when this form is used, a power transmission coil through which a high frequency current flows is arranged on the back side of the soft magnetic sheet 40, and a light-emitting item equipped with a power receiving coil and a magnet piece is magnetically attached to the front side of the soft magnetic sheet 40, so that an illumination system can be created in which the light-emitting item can be magnetically attached to any position on the magnetic attachment plane and can be illuminated by wireless power supply. In this case, the soft magnetic sheet 40, and in turn, the ferromagnetic sheet, are advantageous for the following reasons. That is, when applying wireless power supply, if a power transmission coil is provided on the back side of a metal plate, the power supply efficiency decreases and heat is generated. A thin metal plate with a thickness of about 0.1 mm can supply power, but mechanical strength cannot be ensured. Therefore, a main body 111 with an opening 16 on the flat surface 4 is used, and the opening 16 is covered with a non-metallic ferromagnetic sheet 40 instead of the flat surface of the metal plate to form a magnetically attracted surface.

[0045] Here, since a large area of ​​the opening 16 reduces the rigidity of the main body 111 and reduces the mechanical strength, it is preferable that the area of ​​the opening 16 is 80 percent or less of the area of ​​the plane 4. To supplement the strength of the main body, reinforcing bars 18, 19 may be provided to connect opposing non-opening parts 17 in a manner that bridges the opening 16, as shown in Fig. 9. It is also possible to choose not to provide the reinforcing bars 18, 19 and to keep the rigidity low to facilitate attachment to a curved surface. The method for installing the panel P3 on the non-magnetic wall surface 5 is the same as that for the panel P1, and therefore will not be described here.

[0046] As described above, the panels P1, P2, and P3 of the present invention can be easily attached (set up) on a wall by applying protective tape thereto, and can also be easily removed and the layout changed, allowing for a truly DIY-like experience. Furthermore, if the base is plasterboard, the pins attaching the panel can be pulled out with bare hands (fingers), and the holes left after removal are small and barely noticeable.

[0047] The panel of the present invention can be used for any wall display depending on the combination with the item L. For example, it can be used as a simple decoration in a store, a display for small items, or even a flat-screen TV can be attached to display videos.

[0048] In addition, the panel of the present invention can aim for non-combustible certification. The metal soft magnetic plate or thin soft magnetic sheet itself is non-combustible, and if the surface material, paint, and reinforcing material are changed to non-combustible materials, the combination of these elements is likely to result in the panel being certified as non-combustible.

[0049] In order to reduce the effort required to pull out the pins 6 one by one, it is also possible to use a removal aid X as shown in FIG. The removal aid X is made of a metal wire such as stainless steel having a thickness of 0.2 mm to 0.8 mm. This metal wire passes through the small holes 3a, 3b that are closest to each other at the four corners of the small holes 3a, 3b in the two adjacent side surfaces 7a, 7b, and has its open ends connected to each other to form a ring shape. When the panel is not to be removed, as shown in Figure (a), the pulling part X1 of the metal wire is placed on the back side of the corner so that it is not noticeable, and when removing it, as shown in Figure (b), a fingernail or a pointed tool is used to expose the pulling part X1 on the front side and pull it toward you in the normal direction of the non-magnetic wall surface 5, thereby making it possible to remove multiple pins 6 all at once. Such removal aids X may be provided at all four corners of the panel, or only at some of them. EXAMPLES

[0050] A white-painted rolled steel plate (thickness 0.35 mm) manufactured by Nippon Steel Corporation was cut into a rectangular shape with notches at the four corners and folded to produce a panel P1 having a square flat surface 4 with each side measuring 30 cm. The angle between the side surface 7 and the flat surface 4 is set to 45 degrees, and the side surface 7 is further folded to form the bottom surface 8. At this time, the bottom surface 8 is formed by folding in a width of 10 mm. The side surface 7 has a width of approximately 14.2 mm, with a small hole 3 having a diameter of 1 mm drilled in the center, and the tip of the bottom surface 8 is located in a direction perpendicular to the side surface 7 from the small hole 3. A total of three small holes 3 were drilled in the center of the side surface corresponding to the length direction of one side (30 cm) of the flat surface 4, and further in positions 5 mm toward the center from both ends of the 30 cm side.

[0051] The reinforcing material 2 was made by cutting out a square of expanded PS (polystyrene; expansion ratio 50 times) with a side length of 30 cm and a thickness of 1 cm, and attaching it to the back of the flat surface 4 with double-sided adhesive tape. At this time, the panel weight was approximately 320 gr.

[0052] Next, the panel P1 was attached to a plasterboard wall in the following manner. That is, I put a commercially available pin with a flat head of FANYBRAND 2.2 (diameter 0.9 mm, length 22 mm / unichrome plating) through the small hole on the side and found the tip of the bottom. The pin was almost perpendicular to the side. Next, I placed a 10 yen coin on the head of the pin at that position and pushed it in with my thumb. Three pins were used on the upper side of the panel, and two each on the lower side and on both sides.

[0053] The panel installed on the plasterboard was lightly pushed parallel to the wall, but it did not budge. In this example, a memo paper could be anchored to the flat surface of the panel using a commercially available magnet. A magnetic hook was also attached and a load of 6 kg was applied to the hook, but the hook was magnetically attached to the panel and did not come off, and no abnormality was found in the panel. [Industrial Applicability]

[0054] The panel of the present invention can be used to transform a non-magnetic wall surface, such as a plasterboard wall or a wooden wall, partially or entirely into a wall surface to which magnets are attracted. This panel is also convenient for use in homes to post memos and contact lists, and in companies, schools, and government offices. Furthermore, this panel is easy to install. [Explanation of symbols]

[0055] 1 Main unit 2 Reinforcement 3 small holes 4 planes 5 Non-magnetic wall 6-pin 7. Aspect 8 Bottom 9. Areas adjacent to folded parts 10 Bending point 11 Main body 12 Where the edges of a soft magnetic plate or sheet are adjacent 14 Cylindrical wall 15 Side and bottom surfaces for curved sections 21 Reinforcement 31 Small hole 40 Soft magnetic sheet 41 plane 51 Non-magnetic wall 71 Side 81 Bottom 111 Main body P1 Panel P2 Panel P3 Panel

Claims

1. A panel having a soft magnetic plane, characterized in that the panel comprises a thin soft magnetic plate made of a soft magnetic material, the panel having a triangular or polygonal plane, at least two sides of the plane having side surfaces bent at an angle of 20 degrees to 60 degrees from the plane, and the soft magnetic plate forming the side surfaces is further bent so as to be parallel to the plane to form a bottom surface.

2. 2. A panel having a flat soft magnetic material surface according to claim 1, wherein a small hole is provided on a side surface thereof, penetrating the side surface from the front surface to the back surface.

3. 3. A panel having a flat soft magnetic material surface according to claim 1, wherein a tip of the bottom surface is located in a direction perpendicular to the side surface from the position of the small hole provided in the side surface.

4. 2. A panel having a soft magnetic plane according to claim 1, characterized in that a soft magnetic plate having a developed view of the panel is manufactured by a process such as punching and then folded.

5. 2. A panel having a soft magnetic plane according to claim 1, characterized in that a reinforcing material such as plastic, a foamed plastic material, or wood is attached to the rear side of the plane.

6. 2. A panel having a flat soft magnetic material surface according to claim 1, wherein the surface of the soft magnetic plate is covered or painted.

7. 2. A panel having a flat soft magnetic surface as described in claim 1, characterized in that an opening is provided in a part of the flat surface of the soft magnetic plate, and a ferromagnetic sheet is attached to the non-opening part of the flat surface so as to cover the opening.

8. A method for installing the panel according to claim 3 on a non-magnetic wall, comprising the steps of: This method of installing a panel having a flat soft magnetic surface on a non-magnetic wall is characterized in that the tip of a pin or nail passed through a small hole in the side surface is used to locate the tip of the bottom surface of the panel, and the pin or nail is then pressed into the non-magnetic wall surface.

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