Magnetic wall hanging system

Abstract

To provide a magnetic wall hanging system having a simple structure, capable of obtaining a relatively large withstand load, and excellent in fire resistance.SOLUTION: A magnetic wall hanging system 1 includes a magnetic wall surface 11 formed by attaching a wall surface magnet sheet 21 to a wall surface forming a substantially vertical plane, and a hanging tool 50 attached with a hanging tool magnet sheet 51, and is made by magnetically attracting the hanging tool magnet sheet to the magnetic wall surface. Both the wall surface magnet sheet and the hanging magnet sheet are multi-polarized with the same magnetization pitch on the surface, and the wall surface magnet sheet has a thickness of 150 μ to 540 μ including a mounting sheet 25, and a magnetization line 24X formed by a boundary portion between any one magnetic pole 22 and the adjacent magnetic pole 23 on the surface of the wall surface magnetic sheet is virtually horizontal.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a magnetic wall hanging system, and more particularly to a system that can ensure the non-combustibility of the wall and can hang items on the wall by utilizing magnetic attraction and repulsion. [Background technology]

[0002] As one system for hanging items on a wall surface using magnetic attraction, Patent Document 1 discloses a configuration including a magnetic decorative panel and a hanging device (tool) equipped with a magnetic sheet. This hanging device is detachably hung on the magnetic decorative panel by magnetic force, and is used as a hanging hook or a bookshelf.

[0003] In order to ensure a larger load capacity for the fasteners used in the above-mentioned systems, efforts have been made to increase the magnetic attraction force or to increase the friction force by coating or attaching an adhesive material to the surface of a magnetic body such as a magnetic sheet. For example, Patent Document 2 discloses a fastener that combines a strong permanent magnet that is magnetically attracted to a soft magnetic wall surface with an anti-slip elastic body. On the other hand, Patent Document 3 discloses a method in which a display piece having a magnetic sheet magnetized at the same pitch as a multi-pole magnetized magnetic sheet is attached to a wall surface having a multi-pole magnetized magnetic sheet applied to its surface.

[0004] [Patent Document 1] Utility model registration No. 3207754 [Patent Document 2] Application No. 138266-1974 [Patent Document 3] Utility model registration No. 3039710 DISCLOSURE OF THEINVENTION [Problem to be solved by the invention]

[0005] However, the technology of Patent Document 1 may not be able to obtain sufficient static friction due to contamination of the wall surface or deterioration or dirt of the elastic body. Furthermore, Patent Document 2 requires a special permanent magnet and the fastener is too large. Furthermore, the technology of Patent Document 3 works well for display sheets and light loads, but when the load increases, the magnetic adhesion is weak and the friction coefficient is not sufficient, so the fastener falls off. On the other hand, when such a system is applied to an interior wall, it is desired that the system has excellent fire resistance so as not to spread damage in the event of a fire.

[0006] The present invention has been made in consideration of the above-mentioned problems, and has an object to provide a magnetic wall hanging system that has a simple configuration, can withstand a relatively large load, and has excellent fire resistance. [Means for solving the problem]

[0007] In order to solve the above problems, the present invention takes the following measures. 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 embodiments described below, and do not limit the components of the present invention to these.

[0008] One aspect of the present invention is a magnetic wall hanging system (1, 2, 3) having a magnetic wall surface (11) formed by attaching a wall surface magnetic sheet (21, 21A) to a wall surface forming a substantially vertical plane, and a hanging device (50, 60, 80) having a hanging device magnetic sheet (51, 61, 81) attached thereto, and the hanging device magnetic sheet (51, 61, 81) is magnetically attracted to the magnetic wall surface (11), in which the wall surface magnetic sheet (21, 21A) and the hanging device magnetic sheet (51, 61, 81) are both multi-pole magnetized with the same magnetization pitch on their surfaces, and the wall surface magnetic sheet (21, 21A) has a thickness of 150 μm including the mounting sheet (25). m ~540μ mand the magnetization line (24X, 24AX) formed by the boundary between any one magnetic pole (22) and the adjacent magnetic pole (23) on the surface of the wall surface magnet sheet (21, 21A) is substantially horizontal.

[0009] According to this embodiment, when the load applied to the fastener (50, 60, 80) is slightly larger than the limit of the static friction force (Q) between the magnetic wall surface (11) and the fastener magnet sheet (51, 61, 81), the fastener magnet sheet (51, 61, 81) that faces the wall surface magnet sheet (21, 21A) with its opposite poles facing each other and attracted by a strong magnetic attraction force, approaches or overlaps with the same pole of the wall surface magnet sheet (21, 21A). At this time, a magnetic repulsive force (f1) is generated in the vertical upward direction. As a result, the load can be supported. The coefficient of friction between the magnetic wall surface (11) and the fastener (50, 60, 80) is essentially irrelevant to this phenomenon.

[0010] Therefore, in addition to the effect of the material with a high friction coefficient and the adhesive material, the load capacity can be further increased. This is because the load capacity due to the magnetic repulsive force f1 is added to the load capacity due to the friction coefficient of the material used. Here, the locking due to the friction force and the locking due to the magnetic repulsive force are completely independent. In other words, the relative load capacity can be increased with an extremely simple structure. In addition, the wall magnet sheet (21, 21A) has a thickness of 150 μm including the mounting sheet (25). m ~540μ m Since it satisfies the evaluation criteria of the prescribed performance tests regarding fire resistance, it is suitable for use as an interior wall of a building.

[0011] In another aspect of the present invention, the magnetization pitch of the wall surface magnet sheet (21, 21A) and the hanging tool magnet sheet (51, 61, 81) is 1 mm or more and 7.0 mm or less.

[0012] In another aspect of the present invention, the wall surface magnet sheet (21, 21A) uses a soft magnetic board (30) as a back yoke.

[0013] According to this embodiment, the decrease in magnetic force resulting from thinning the wall surface magnetic sheet (21, 21A) to ensure fire resistance is covered by the back yoke effect of the soft magnetic layer (32) in the soft magnetic board (30), thereby ensuring sufficient magnetic force, i.e., high surface magnetic flux density, on the magnetic wall surface (11).

[0014] In another aspect of the present invention, the wall surface magnet sheet (21, 21A) is anisotropic.

[0015] According to this embodiment, it is possible to make the most of the magnetic attraction effect between the back yoke of the soft magnetic layer (32) on the back surface and the magnetic sheet (51) of the fastener (50) magnetically attached to the magnetic wall surface (11).

[0016] In another embodiment of the present invention, the soft magnetic board (30) is a gypsum board having a magnetic layer laminated on one side thereof, a steel plate, or a steel plate laminated with a mounting sheet or a functional sheet.

[0017] In another aspect of the present invention, the wall surface magnet sheet (21A) has a magnetization line (24AX) that is at least one of a curved and bent shape at a specific position (27) midway along the magnetization line (24AX), and the hanging device magnet sheet (81) has a shape that is a mirror image of the specific position (27) of the magnet sheet (21A) and has a magnetic pole structure in which the N pole and S pole are reversed.

[0018] According to this embodiment, the hanging device (80) having the hanging device magnetic sheet (81) attached thereto is precisely magnetically attached to the specific position (27) without shifting either vertically or horizontally. Effect of the Invention

[0019] According to this aspect, a magnetic wall hanging system is provided that has a simple configuration, is capable of withstanding a relatively large load, and is excellent in fire resistance. [Brief description of the drawings]

[0020] [Figure 1] FIG. 1 is a perspective view showing a first magnetic wall hanging system. [Diagram 2] This is a two-sided view of the magnetic sheet on the magnetic wall side in the first magnetic wall hanging system. [Diagram 3] FIG. 2 is a two-sided view of the magnetic sheet on the fastener side in the first magnetic wall hanging system. [Figure 4] FIG. 1 is a side view showing an example of use of the first magnetic wall hanging system. [Diagram 5] 5 is a side view for explaining the acting force and relative positional relationship between the two magnet sheets in FIG. 4. FIG. [Figure 6] FIG. 13 is a diagram for explaining a second magnetic wall hanging system. [Figure 7] 13 is a side view for explaining the acting force and relative positional relationship between two magnet sheets in the second magnetic wall hanging system. FIG. [Figure 8] FIG. 7(b) is an enlarged view of the dashed line portion in FIG. [Figure 9] FIG. 13 is a perspective view showing a third magnetic wall hanging system. [Figure 10] A front view showing a magnetic sheet used in the third magnetic wall hanging system. [Figure 11] FIG. 13 is an exploded perspective view showing a modified example of the third magnetic wall hanging system. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0021] [First magnetic wall mounting system] Fig. 1 is a perspective view showing the first magnetic wall hanging system 1, (a) is an external view, and (b) is a partially exploded view. Fig. 2 is a two-sided view of the magnetic sheet 21 on the magnetic wall 10 side in the first magnetic wall hanging system 1, (a) is a front view, and (b) is a side view. Fig. 3 is a two-sided view of the magnetic sheet 51 on the hanging device 50 side in the first magnetic wall hanging system 1, (a) is a front view, and (b) is a side view. In these figures, including the figures described below, the three axes of the Cartesian coordinate system are XYZ, and the wall surface 11 of the magnetic wall 10 is perpendicular to the XY plane and parallel to the ZX plane. Also, the scale of each figure is not necessarily accurate, and some elements are drawn simply to make the present invention easier to understand.

[0022] As shown in Figure 1(a), the first magnetic wall hanging system 1 comprises a magnetic wall 10 and a hanging device 50, and is configured so that a magnetic sheet 21 provided on the magnetic wall 10 and a magnetic sheet 51 provided on the hanging device 50 are magnetically attracted to each other, thereby hanging the hanging device 50 to the wall surface 11 of the magnetic wall 10.

[0023] As shown in FIG. 1(b), the magnetic wall 10 includes a magnetic wall material sheet 20, a soft magnetic board 30, and a wall base 40.

[0024] The magnetic wall material sheet 20 is configured by laminating a wall material film 25 onto a magnet sheet 21 via, for example, a urethane-based adhesive.

[0025] The magnetic sheet 21 is 80 μ thick. m ~400μ m As shown in FIG. 2, the front and back surfaces of the magnet sheet 21 are formed with alternating, equally spaced magnetic poles 22, 23 (N and S poles) of a certain width with different polarities, forming a double-sided multi-pole magnetized type having a magnetization line 24X with a certain pitch. The magnetization line 24X here refers to a virtual boundary between any one magnetic pole 22 on the surface of the multi-pole magnetized magnet sheet 21 and the adjacent magnetic pole 23 of a different polarity. In reality, it is a part that appears white when a magnetic viewer sheet (a film in which microcapsules of magnetic fluid are uniformly dispersed) is attached to the magnet sheet, and is an area where the magnetic field in the normal direction on the magnet sheet surface, i.e., the magnetic field perpendicular to the surface, is extremely weak or zero. In other words, the magnetization line 24X means a virtual line on the sheet surface. In the side view, the magnetization line 24X in the present invention is located at both ends of the magnet sheet 21 in the thickness direction.

[0026] The reason why the thickness of the magnet sheet 21 is set to the above range is to ensure fire resistance and magnetic retention. m If it exceeds 80μ, it becomes difficult to ensure fire resistance. m If the thickness is less than this, sufficient magnetic holding force cannot be expected. Also, the double-sided multi-pole magnetization type is used because a suitable magnetic attraction force is required on both the front and back sides. That is, one side of the magnetic sheet 21 faces the indoor space and functions to attract and hold a display piece or a hanging device such as a shelf equipped with a ferromagnetic material (which may or may not have magnetic properties) by magnetic force, while the other side magnetically attracts to the soft magnetic board 30 equipped with a soft magnetic layer 32 (described later) and functions to ensure the back yoke effect that occurs at that time.

[0027] Such a magnet sheet 21 is produced by forming a mixture of fine powder of a hard magnetic material (e.g., ferrite-based magnet material such as barium ferrite or strontium ferrite, or rare earth magnet material such as samarium-cobalt-based magnet, neodymium-iron-boron-based magnet) and a small amount of organic polymer elastomer (e.g., chlorinated polyethylene, chlorosulfonated polyethylene, ethylene-vinyl acetate copolymer, ethylene-propylene rubber, nitrile rubber, acrylic rubber, chloroprene rubber) as a binder into a sheet by a molding method such as rolling or extrusion, and magnetizing both sides. Note that the magnet sheet 21 is preferably made of an anisotropic material rather than an isotropic material. Compared with an isotropic material, an anisotropic material has stronger magnetization in the direction perpendicular to the sheet surface and is easier to pass a magnetic force from one side to the back side, so that the magnetic attraction between the back yoke (soft magnetic layer 32) on the back side and the magnet sheet 51 of the fastener 50 magnetically attached to the wall surface 11 can be maximized. The magnetization pitch of the magnet sheet 21 is preferably 1.0 mm or more and 7.0 mm or less, and more preferably 2.0 mm or more and 6.0 mm or less.

[0028] Wall material film 25 is 70μ thick m ~140μ mIt is a film-like decorative wall material that has an ink layer with a design or pattern printed on the upper surface of a base film (not shown). The base film can be made of thermoplastic resin such as polyvinyl chloride resin or polyethylene resin with an ink-receiving layer formed on the surface, or thin coated paper. Ink is fixed on this ink-receiving layer by printing according to the application. Examples of printing methods include offset printing, letterpress printing, inkjet printing, and thermal transfer printing. Wall material films 25 with this configuration are already in production. Thickness: 140μ m The reason for setting the total thickness of the magnetic wall material sheet 10 at 540μ is that the maximum thickness that can be expected to ensure fire resistance is 540μ. m This is because the thickness must be within 70μm. Also, if it is thicker than necessary, the permeability of the magnetic lines from the sheet magnet will be reduced, and the magnetic attraction ability as a magnetic wall will be deteriorated. m The reason for this is to ensure an appropriate tensile strength and the concealment ability of the underlying magnetic sheet 21.

[0029] The magnetic wall material sheet 20 described above conforms to ISO5660-1, and in a heat generation test using a cone calorimeter tester in accordance with the fire resistance test method and performance evaluation standard based on Article 2, Paragraph 9 of the Building Standards Act and Article 108-2 of the Enforcement Order of the Building Standards Act, (1) the total heat generation amount for 20 minutes after the start of heating is 8 MJ / m 2 (2) The maximum heat generation rate is 200KW / m for 10 seconds or more for 20 minutes after the start of heating. 2 (3) It has non-combustibility that satisfies the condition of being free of cracks or holes that are harmful to fire prevention for 20 minutes after heating begins.

[0030] Furthermore, in gas toxicity testing based on the gas toxicity testing method specified in Ministry of Construction Notification No. 1231 of August 25, 1976, the evaluation standard of an average behavioral cessation time of mice of 6.8 minutes or more was met. That is, the test specimen was heated in a heating furnace by radiant heat from an electric heater and by contact with a flame, and the average time (behavior cessation time) until eight mice inhaled the generated gas were stopped was calculated, along with the standard deviation σ, and the behavioral cessation time of mice, Xs, was calculated using the following formula. Xs=X-σ The evaluation standard for passing is met when the value of Xs is greater than 6.8 minutes (the time it takes for a mouse to stop moving when using standard wood). The reason why the standard deviation is subtracted from the average time it takes to stop moving is because the evaluation takes into account the variations in materials and test results.

[0031] The soft magnetic board 30 includes a gypsum board 31 and a soft magnetic layer 32 laminated on one side of the gypsum board 31. The soft magnetic board 30 is fastened to a wall base 40 made of plywood, concrete, light metal, or the like, with nails, screws, adhesive, staples, or the like, with the soft magnetic layer 32 facing the front side, i.e., toward the indoor space. Note that the soft magnetic board 30 may be an inorganic board with a decorative steel plate layer laminated on one side, a steel plate, or a board made of a steel plate laminated with a facing sheet or a functional sheet.

[0032] The magnetic wall material sheet 20 is fixed by magnetically adsorbing the magnetic surface of the magnet sheet 21 to the surface of the soft magnetic layer 32 of the soft magnetic board 30. This allows the magnetic wall material sheet 20 to function as a magnetic wall that can magnetically adsorb ferromagnetic material to the wall surface 11. In other words, a design can be applied to the surface, and items such as display pieces or shelves equipped with ferromagnetic material can be attracted and held by magnetic force.

[0033] Such a magnetic wall material sheet 20 has a total thickness of the magnet sheet 21 and the wall material film 25 of 150 μm. m ~540μ m It is preferable that:

[0034] As shown in FIG. 1(b), the hanging device 50 comprises a plate-shaped back panel 57, a hook 58 provided at the bottom of the back panel 57, and a magnetic sheet 51 fixed to the back surface of the back panel 57 with adhesive, and is designed to be able to be hung on a wall surface 11 by magnetic attraction with a load (item) L suspended from the hook 58.

[0035] Like magnet sheet 21, magnet sheet 51 is made of a sheet-like magnet body obtained by magnetizing a mixture of, for example, synthetic resin as a binder and magnetic powder made of a hard magnetic material. That is, as shown in Fig. 3, magnetic poles 52, 53 (N pole and S pole) of a constant width and different polarities are formed alternately in stripes at equal intervals on both sides of the magnet sheet, forming a double-sided multi-pole magnetized type having magnetized lines 54X at a constant pitch. The magnetization pitch of magnet sheet 51 is the same as that of magnet sheet 21.

[0036] Next, the operation and effect unique to the first magnetic wall hanging system 1 will be described with reference to FIGS. FIG. 4 is a side view showing an example of use of the first magnetic wall hanging system 1, and shows a state in which the hanging device 50 with a load L suspended from the hook 58 is hung on the wall surface 11. FIG. 5 is a side view for explaining the acting forces and relative positional relationship between the two magnetic sheets 21, 51 in FIG. 4, where (a) shows a state when the load L is light and the fastener 50 is held on to the wall surface 11 with just enough force from the static friction force Q, and (b) shows a state just before the load L becomes heavy and cannot be supported by the static friction force Q alone. In addition, in the hanging device 50, the position in the Y-axis direction of the point where the load acts is a certain distance away from the wall surface 11, but since this distance is small in the case of the hanging device 50, it is not taken into consideration. In other words, the clockwise rotation moment of the hanging device 50 in FIG. 4 is not taken into consideration.

[0037] In Fig. 4, the hanging device 50 is attracted to and hung on the wall surface 11 by a magnetic attraction force P acting between the magnet sheet 21 on the magnetic wall 10 side and the magnet sheet 51 on the hanging device 50 side. At this time, the magnet sheets 21 and 51 are in a state where the opposite poles (N pole 22 and S pole 53, S pole 23 and N pole 52) are magnetically attracted to each other as shown in Fig. 5(a). In this state, the following force balance equation is established in the Z-axis direction. μ×P=W Where P=R×P 0 It is. Here, W is the total load of the fastener 50 and the load L, μ is the static friction coefficient between the magnetic sheet 51 and the wall surface 11, P is the magnetic attraction force acting between the magnetic sheet 21 and the magnetic sheet 51, R is the area of ​​the magnetic surface of the magnetic sheet 51, and P 0 is the magnetic attraction force per unit area acting between the magnet sheet 51 and the magnet sheet 21.

[0038] Next, the load L is changed to a heavier one, and a situation is assumed in which the load applied to the fastener 50 is slightly larger than the limit that can be held by the above-mentioned frictional force Q (FIG. 5(b)).

[0039] When the fastener 50 tries to move vertically downward under the above circumstances, the magnetic poles of the magnetic sheet 51, which face each other with opposite poles and are attracted by a strong magnetic attraction force, try to approach or overlap with the magnetic poles of the same polarity of the magnetic sheet 21. At this time, a magnetic repulsive force f1 is generated vertically upward in the region A in FIG. 5(b). As a result, the load W2 can be supported. The coefficient of friction between the wall surface 11 and the fastener 50 is essentially irrelevant to this phenomenon.

[0040] Thus, the first magnetic wall hanging system 1 does not require a strong frictional force, so that a hanging device system with a relatively large load capacity can be provided even if materials with a high friction coefficient or adhesive materials that are intentionally used are omitted. In other words, the relative load capacity can be increased with an extremely simple structure. This is because the load capacity due to the magnetic repulsive force f1 is added to the load capacity due to the friction coefficient of the material used. In other words, this invention utilizes the physical law that magnets of the same pole repel each other and magnets of opposite poles attract each other. Attachment by friction and attachment by magnetic repulsion are completely independent. Furthermore, by using a material with a high friction coefficient or an adhesive in combination, it is possible to realize an even larger load capacity. Also, it is possible to attach a glossy decorative sheet to the attachment (wall) surface. It is effective as a wall surface for magnetically holding display items printed on magnetic sheets, as well as extremely thin steel sheets, specifically Steel Paper (registered trademark) made by the applicant.

[0041] In addition, since the magnetic wall material sheet 20 satisfies the evaluation criteria of the above-mentioned tests regarding fire resistance, it is suitable for use as an indoor wall of a building, but may also be used as an outdoor wall. The same applies to the systems of the following embodiments. Other advantages include: That is, since the magnetic wall material sheet 20 can be detachably integrated with the soft magnetic board 30 by magnetic force without adhesive, no skilled techniques or special tools are required to replace the wall material sheet. In other words, the wall material sheet can be easily and quickly remodeled with a DIY feel.

[0042] In addition, in the magnetic wall 10, a soft magnetic board 30 is disposed on the back surface of the magnet sheet 21, thereby creating a back yoke effect and increasing the magnetic force. In other words, the reduction in magnetic force resulting from making the magnetic sheet 21 thinner to ensure fire resistance is covered by the back yoke effect of the soft magnetic board 30, ensuring sufficient magnetic force, i.e., high surface magnetic flux density, on the wall surface 11.

[0043] In addition, the magnet sheet 21 is magnetized to the soft magnetic board 30 so that the magnetization lines 24X are parallel to the horizontal direction, and the magnet sheet 51 with the same magnetization pitch as the magnet sheet 21 is attached as an article to be magnetized to the wall surface 11, so that the different poles of the striped magnetic poles of the magnet sheets 51, 21 are magnetized to each other in a horizontal state between the hanging device 50 and the wall surface 11. In this case, the article can be easily slid with a small force in the horizontal direction parallel to the magnetization lines 24X, 54X, but cannot be slid with a small force in the vertical direction perpendicular to the magnetization lines 24X, 54X. The reason is that when a force is applied in a direction perpendicular to the magnetization lines, a repulsive force acts between the same poles of the magnet sheets 51, 21, and this repulsive force prevents the movement of the magnet sheet 51 in a direction perpendicular to the wall surface 11. Therefore, the movement of the article in a direction perpendicular to the magnetization lines is restricted. Therefore, the hanging device 50 can be easily fixed horizontally.

[0044] [Second magnetic wall mounting system] Next, the second magnetic wall surface hanging system 2 will be described. Figure 6 is a diagram for explaining the second magnetic wall surface hanging system 2. (a) is a perspective view showing the whole system, and (b) is a side view showing an example of its use.

[0045] As shown in Fig. 6(a), the second magnetic wall hanging system 2 has a hanging device 60 instead of the hanging device 50 in the first magnetic wall hanging system 1. The other configurations are the same as those of the first magnetic wall hanging system 1, and the same components are denoted by the same reference numerals and their description is omitted.

[0046] The hanging device 60 is a magnetic shelf that is L-shaped when viewed from the side and includes a back panel 67 and a mounting plate 68, and a magnetic sheet 61 is attached with an adhesive to the back surface of the back panel 67. The hanging device 60 is designed to be able to be hung on the wall surface 11 with an article that is a load L placed on the mounting plate 68. The magnet sheet 61 used is similar to the magnet sheet 51 of the hanging device 50 in the first magnetic wall hanging system 1 described above, and has a magnetized line 64X (see Figs. 7 and 8) between adjacent magnetic poles 62, 63 of different polarities.

[0047] In the second magnetic wall hanging system 2, due to the structure of the hanging device 60, the position in the Y-axis direction of the point on which the load W (the sum of the weight of the hanging device 60 and the load L) acts is a certain distance away from the wall surface 11. Therefore, when the hanging device 60 remains on the wall surface 11, a rotation moment M in the clockwise direction in the figure is generated in the hanging device 60.

[0048] Next, the operation and effect unique to the second magnetic wall hanging system 2 will be described with reference to FIGS.

[0049] Fig. 7 is a side view for explaining the acting force and relative positional relationship between the two magnet sheets 21, 61 in Fig. 6, where (a) shows a state when the load L is light and the hanging device 60 is held on the wall surface 11 with only the static friction force Q having a margin, and (b) shows a state immediately after the load L becomes heavy and cannot be supported by the static friction force Q alone. The load (including the weight of the hanging device 60) acting on the hanging device 60 is W3 in (a) and W4 (W4>W3) in (b). Fig. 8 is an enlarged view of the dashed line part in Fig. 7(b).

[0050] 7(a), the hanging device 60 is hung on the wall surface 11 by the magnetic attraction force P between the magnetic sheets 21 and 61. That is, the magnetic sheet 21 on the wall surface and the magnetic sheet 61 of the hanging device are magnetically attracted to each other with their opposite poles (N pole and S pole), and the magnetization line 24X of the magnetic sheet 21 and the magnetization line 64X of the magnetic sheet 61 are in a horizontal line. The downward force W3 acting on the hanging device 60 and the static friction force Q3 are balanced, so the hanging device 60 remains on the wall surface 11 without slipping.

[0051] Next, as shown in FIG. 7(b), a situation is assumed in which the load placed on the fastener 60 is slightly greater than the limit at which it can be fastened by static friction force. In this situation, the load W4 applied to the fastener 60 pulls the fastener 60 vertically downward, causing the magnet sheets 21 and 61 to relatively shift in the vertical direction. Since the magnetization lines 24X and 64X of the magnet sheets 21 and 61 shift in a direction perpendicular to them (i.e., the vertical direction), magnetic poles of the same polarity (N pole 22 and N pole 62, S pole 23 and S pole 63) partially overlap, and magnetic repulsive forces f2 and f3 are generated in the vertically upward and horizontal directions in the region A.

[0052] On the other hand, a magnetic attraction force P acts between the two magnetic sheets 21 and 61. Furthermore, the magnetic sheet 51 of the hanging device 60 is pressed toward the wall surface 11 by the rotational moment M2 below it, and this pressing force and the magnetic attraction force exceed the repulsive force f3, so that the hanging device 60 remains on the wall surface 11.

[0053] [Third magnetic wall mounting system] Next, the third magnetic wall hanging system 4 will be described. Figure 9 is a perspective view showing the third magnetic wall hanging system 3, (a) is an external view, and (b) is a partially exploded view. Figure 10 is a front view showing a magnet sheet used in the third magnetic wall hanging system 3, (a) shows the magnet sheet 21A on the magnetic wall 10A side, and (b) shows the magnet sheet 81 on the hanging device 80 side.

[0054] 9, the third magnetic wall hanging device system 3 includes a magnetic wall 10A instead of the magnetic wall 10 in the first magnetic wall hanging device system 1, and a hanging device 80 instead of the hanging device 50. In the magnetic wall hanging device system 3, the same components as those in the first magnetic wall hanging device system 1 are denoted by the same reference numerals and their description will be omitted. The magnetic wall 10A includes a magnet sheet 21A in place of the magnet sheet 21 in the magnetic wall 10. Moreover, the hanging device 80 includes a magnet sheet 81 in place of the magnet sheet 51 in the hanging device 50.

[0055] As shown in Fig. 10(a), the magnet sheet 21A is different from the magnet sheet 21 (see Fig. 2) of the magnetic wall 10 in the first magnetic wall hanging system 1 in the following respects: In the magnet sheet 21A, the magnetization lines 24AX extend in parallel and horizontal directions, but part of the magnetization lines 24AX is curved and bent at a specific position 27 along the way.

[0056] As shown in Fig. 10(b), the magnet sheet 81 differs from the magnet sheet 51 (see Fig. 3) of the hanging device 50 in the first magnetic wall hanging system 1 in the following respects: That is, in the magnet sheet 81, the magnetization lines extend in parallel and horizontal directions, but part of the magnetization lines 84X are curved and bent midway. The surface of magnet sheet 81 that is magnetically attached to magnet sheet 21A has an opposite N and S poles in a shape that is a mirror image of specific position 27. The N and S poles of the magnetic poles in FIG. 10(b) are indicated when viewed from the rear panel 57 side in FIG.

[0057] Ma The magnet sheet 21A has a shape in which a part of the magnetization line 24AX is curved and bent at a specific position 27 in the middle of the magnetization line 24AX, Ma The magnet sheet 81 has a shape that is a mirror image of the specific position 27 of the magnet sheet 21A, and has a magnetic pole structure in which the N pole and the S pole are reversed. Ma The magnet sheet 21A has curved and bent portions in the middle of the linearly extending magnetization line, Ma The magnet sheet 81 also has curved and bent portions in the middle of the linearly extending magnetization line. Ma Gnet Sheet 21A and Ma The magnet sheet 81 has magnetic poles of the same width, and the magnetic poles of different polarities face each other and are magnetically attracted to each other. In this specification, even if there is a curved or bent portion of a horizontal line like the magnetization line 24AX, it is regarded as being substantially horizontal when viewed as a whole. A magnet sheet with such specially shaped magnetization lines can be manufactured by magnetizing it using a magnetizing yoke having a coil groove shaped according to the specially shaped magnetization lines. Note that it may be either curved or bent. It may also be in one place.

[0058] The fastener 80 with the magnetic sheet 81 attached thereto will not shift horizontally or vertically at the specific position 27, and can be reliably fixed at the specific position.

[0059] The third magnetic wall surface hooking system may be configured as shown in FIG. 3 FIG. 13 is a partially exploded perspective view showing a modified example of the magnetic wall hanging system of FIG. In the magnetic wall mounting system shown in FIG. 11, a magnetic sheet 8 is attached to the back surface of a back panel 57. 1 A plurality of magnet sheets are prepared in advance, and an opening 27B is provided on the magnet sheet 21B side. A general magnet sheet with parallel magnetization lines formed on the entire surface is used as the magnet sheet 21B. The opening 27B is provided by opening the magnet sheet 8. 1 The size of the opening 27B is such that the magnetic sheet 8 fits in the opening 27B. 1 Then, by laminating the wall material film 25, a magnetic wall with the same function as that shown in Fig. 9 can be realized. In this case, it can be manufactured based on a general magnetic sheet without using a magnetizer that combines parallel lines and special lines.

[0060] In the present invention, a back yoke may be attached to the magnetic sheet attached to the fastener. In this case, the magnetic attraction force is increased, which is preferable.

[0061] Next, examples will be described. EXAMPLES

[0062] A covering sheet including a surface matte film and a wood grain print layer was laminated on a 0.3 mm thick anisotropic magnet sheet magnetized in multiple poles with a magnetization pitch of 3.0 mm. The magnetic surface of the wall multi-pole magnetized magnet sheet with a total thickness of 0.42 mm was magnetically attracted to the magnetic surface of Tiger Fe board (registered trademark of Yoshino Gypsum Co., Ltd.) used as a back yoke to form a magnetic wall. The Tiger Fe board is a board with a soft magnetic layer laminated on one side of a gypsum board. The magnetic poles appearing on the surface of the magnetic wall were arranged so as to extend long in the horizontal direction, with N and S poles appearing alternately in the vertical direction.

[0063] Next, a multi-pole magnetized magnet sheet having a thickness of 0.84 mm and a magnetization pitch of 3.0 mm was attached to the fastener and magnetically attracted to the magnetic wall surface. A vertical load was applied to the fastener to determine the maximum weight that could be applied without it coming off or falling off the wall. The result, including its own weight, was 22.8 gr / cm 2 It was. Furthermore, the magnetic wall surface was found to be non-flammable in a heat generation test using a cone calorimeter tester. EXAMPLES

[0064] A magnetic wall was formed in the same manner as in Example 1, except that the wall multi-pole magnetized magnetic sheet was changed to a multi-pole magnetized magnetic sheet having a surface of whiteboard specifications and a total thickness of 0.45 mm. The magnetic wall was found to be non-flammable in a combustion test, as in Example 1. In a drop and release test in which a fastener similar to that in Example 1 was magnetically attached to the magnetic wall, the maximum load was 19.1 gr / cm 2 It was. EXAMPLES

[0065] A test was carried out in the same manner as in Example 1, except that a Magpitaboard (registered trademark of Nichirei Magnet Corporation), with a decorative steel sheet as the soft magnetic layer, was used for the back yoke, and the multi-pole magnetized magnet sheet attached to the fastener was changed to a magnet sheet with a thickness of 2.08 mm and a magnetization pitch of 3.0 mm. The magnetic wall surface was incombustible, and the maximum load capacity of the fastener was 24.5 gr / cm. 2 It was.

[0066] Comparative Example 1 An identical wall-surface multi-pole magnetized magnet sheet was obtained, except that the wall-surface multi-pole magnetized magnet sheet of Example 1 was made by laminating a covering sheet including a surface matte film and a wood grain printed layer onto a 0.75 mm thick anisotropic magnet sheet to a total thickness of 0.87 mm. Next, the wall multi-pole magnetized magnet sheet was magnetically attached to the magnetic surface of a Tiger Fe board serving as a back yoke to form a magnetic wall surface. The magnetic wall surface took a long time to burn and was not certified as non-combustible.

[0067] Comparative Example 2 A magnetic wall and a fastener were prepared exactly the same as in Example 1. However, the magnetic wall was arranged so that the magnetized lines on the surface extended long in the vertical direction and N poles and S poles appeared alternately in the horizontal direction. Next, a load was applied vertically downward to the fastener to determine the maximum weight at which it would not slide down the wall or separate from or fall off the wall. The result, including its own weight, was 9.6 gr / cm 2 This load capacity corresponds to the static friction force, and is less than half that of the present invention (Example 1).

[0068] Comparative Example 3 If the hanging fixture of Example 3 is attached directly to the wall of the Magpita Board without using a multi-pole magnetized magnetic sheet, the maximum load capacity of the hanging fixture is 13.2 gr / cm 2 It was. The load capacity is considered to be the static friction force itself, but is significantly smaller than the maximum load capacity of Example 3. In addition, the load capacity gradually decreased as the number of times the sample was touched by hand increased, such as when the test was repeated.

[0069] Although the embodiment of the present invention has been described above, the embodiment disclosed above is merely an example, and the scope of the present invention is not limited to this embodiment. The scope of the present invention is indicated by the description of the claims, and is intended to include all modifications within the meaning and scope equivalent to the claims. [Industrial Applicability]

[0070] This system ensures that the wall surface is non-flammable, and is also effective as a system for hanging items on the wall surface by utilizing magnetic attraction and repulsion forces. [Explanation of symbols]

[0071] 1 Magnetic wall hanging system 2. Magnetic wall hanging system 3. Magnetic wall hanging system 11 Wall (magnetic wall) 21 Magnetic Sheet (Wall Magnetic Sheet) 21A Magnetic sheet (wall magnetic sheet) 22 magnetic pole 23 magnetic pole 24AX Magnetizing Line 24X magnetizing line 25 Wall film (surface sheet) 32 Soft magnetic layer (soft magnetic material) 51 Magnetic sheet (Hanging magnetic sheet) 54X Magnetizing Line 61 Magnetic sheet (Hanging magnetic sheet) 64X Magnetizing Line 81 Magnetic sheet (Hanging magnetic sheet) 84X Magnetizing Line

Claims

1. A wall hanging system having a magnetic wall surface formed by attaching a wall magnetic sheet to a wall surface forming a substantially vertical plane, and a hanging device having a hanging device magnetic sheet attached thereto, the hanging device magnetic sheet being magnetically attracted to the magnetic wall surface, The wall magnetic sheet and the hanging fixture magnetic sheet are both multi-pole magnetized with the same magnetization pitch on their surfaces. The magnetic wall hanging system is characterized in that the wall magnetic sheet has a thickness of 150 μm to 540 μm, including the covering sheet laminated over the entire surface, the magnetization line formed by the boundary between any one magnetic pole on the surface of the wall magnetic sheet and the adjacent magnetic pole is substantially horizontal and at a specific position along the magnetization line, a part of the magnetization line is at least one of curved and bent, and the hanging device magnetic sheet has a magnetic pole structure in which the north pole and south pole are reversed in a mirror image shape to the specific position of the wall magnetic sheet.

2. A magnetic wall hanging system as described in claim 1, wherein the wall magnetic sheet has an opening of a size that allows a magnetic sheet identical to the hanging device magnetic sheet to fit in, and the opening is fitted with a magnetic sheet identical to the hanging device magnetic sheet.

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