JP2020063620A - Wall panel - Google Patents

Abstract

To provide a wall panel that can be attached to a magnetic attraction body with a desired magnetic attraction force even if the magnetic attraction body has a step of about 0.3 mm.SOLUTION: As shown in Fig. (C), a wall panel 10 includes a plate-shaped body 11, a backing 12 that is attached to the back surface of the plate-shaped body 11, a sheet-like foamed resin layer 13 that is attached to the back surface of the backing 12, a magnet sheet 14 attached to the back surface of the foamed resin layer 13, and an adhesive tape 21 as a connecting mechanism 20 partially attached to the back surface of the magnet sheet 14.EFFECT: When the magnetic attraction body has a step, the magnet sheet tries to bend along the step. Although the plate-shaped body does not bend, the thickness of the foamed resin layer changes, so that the bending of the magnet sheet is allowed. As a result, the magnet sheet is sufficiently attracted to the magnetic attraction body even though the magnetic attraction body has a step, and a desired attraction force is secured.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a wall panel that is magnetically attracted to a magnetic attractor such as a precursor wall.

Generally, wall panels are glued to the vehicle wall with an adhesive such as cement. In this case, even if the wall panel is cracked, it cannot be easily replaced.
Therefore, a removable wall panel has been proposed (see, for example, Patent Document 1).

  In the magnetic tile of Patent Document 1, a magnet sheet is attached to the back surface of the tile body. The magnetic tile can be magnetically attracted to the wall by applying iron powder coating to the wall. If the tile body cracks, you can remove it and install a new magnetic tile.

When the inventors of the present invention tried the magnetic tile of Patent Document 1, some magnetic tiles were found to have a problem called “shifting”.
The defect will be described with reference to FIG.

As shown in FIG. 9A, the magnetic tile 100 located at the position indicated by the imaginary line was “shifted” to the position indicated by the solid line.
As shown in FIG. 9B, which is a cross-sectional view taken along line bb of FIG. 9A, the magnetic attraction body 111 has a step 112 having a depth d and a width w that is a triangular shape in a plan view. Although emphasized in the drawing, the depth d was about 0.3 mm. Moreover, the deepest part of the step 112 was filled with the putty 113. The step 112 was not noticeable because it was filled with putty 113.

  The magnetic tile 100 includes a tile body 101 and a magnet sheet 102 attached to the back surface of the tile body 101. The magnet sheet 102 has a thickness of about 1.0 mm and is flexible. On the other hand, since the tile body 101 is a tile made by baking clay, it has poor flexibility. Since the magnet sheet 102 is dependent on the tile body 101, it does not bend at all.

  Therefore, the range of the width w floats above the magnetic attraction body 111. In the magnetic tile 100, only the width obtained by subtracting the width w from the total width contributes to the attraction. It is considered that the magnetic tile 100 "slipped down" because a downward force was applied to the magnetic tile 100 due to an earthquake or the like.

In addition, when a flat steel plate was buried on the magnetic adsorption body 111 side and the magnetic tile 100 was attached to this steel plate, the phenomenon of “falling off” was not observed over a long period of time.
When the precursor wall (magnetic attractor 111) is made of concrete, the step 112 is inevitably generated at the joint of the formwork. Even if a coating material containing iron powder is applied thereon, the step 112 remains.

  Even if there is no step 112 on the driving body wall (magnetic attractor 111), when the paint containing iron powder is applied with a brush or a roller, it may be applied due to the force applied to the brush or the roller. There are slight irregularities on the film surface. These irregularities also cause the “shift”.

  The unevenness or the step 112 may be flattened before the magnetic tile 100 is mounted, but this flattening process is expensive. Such costs are not desirable.

  Therefore, there is a demand for the magnetic tile 100 that can be attached to the magnetic attraction body 111 by the attraction force of the magnet sheet 102 even if there is a step 112 of about 0.3 mm.

JP, 11-117497, A

  It is an object of the present invention to provide a wall panel that can be attached to a magnetic attraction body with a desired magnetic attraction force even if the magnetic attraction body has a step of about 0.3 mm.

The invention according to claim 1 is a wall panel detachably attached to a magnetic attraction body to which a magnet sheet is magnetically attracted,
It is characterized by comprising a plate-shaped body, a sheet-shaped foamed resin layer attached to the back surface of the plate-shaped body, and the magnet sheet attached to the back surface of the foamed resin layer.

The invention according to claim 2 is a wall panel detachably attached to a magnetic attraction body to which a magnet sheet is magnetically attracted,
A plate-like body, a backing attached to the back side of the plate-like body, a sheet-like foam resin layer attached to the back of the backing, and the magnet sheet attached to the back side of the foaming resin layer Is characterized by.

The invention according to claim 3 is the wall panel according to claim 1 or claim 2,
When viewed from the front, the magnet sheet is slightly smaller than the plate-like body.

The invention according to claim 4 is the wall panel according to any one of claims 1 to 3,
The foamed resin layer is made of a hard type polyethylene foam.

The invention according to claim 5 is the wall panel according to any one of claims 1 to 4,
The thickness of the foamed resin layer is 0.33 to 3.0 times the thickness of the magnet sheet.

The invention according to claim 6 is the wall panel according to any one of claims 1 to 5,
When a certain wall panel is referred to as a first panel and a wall panel adjacently arranged on the first panel is referred to as a second panel,
The first panel may include a connection mechanism mechanically connected to the second panel.

The invention according to claim 7 is the wall panel according to claim 6,
The connecting mechanism is an adhesive tape having an adhesive layer on one side, and this adhesive tape is covered with a release film on half or part of the one side,
The adhesive tape is affixed to the back surface of the magnet sheet on the side of the first panel using the adhesive layer so that the release film projects from the first panel.

  In the invention according to claim 1, the wall panel includes a plate-shaped body, a sheet-shaped foamed resin layer, and a magnet sheet. The plate is hard and does not bend. The foamed resin layer changes in thickness when subjected to surface pressure. Since the magnet sheet is a sheet, it bends.

  When the magnetic adsorbent has a step, the magnet sheet tries to bend along the step. Although the plate-like body does not bend, the thickness of the foamed resin layer changes, so that the bending of the magnet sheet is allowed. As a result, the magnet sheet is sufficiently attracted to the magnetic attraction body even though the magnetic attraction body has a step, and a desired attraction force is secured.

  If the back surface of the plate-shaped body is curved due to manufacturing errors or the like, the thickness of the foamed resin layer changes. The magnet sheet is attracted along the magnetic attraction body without being affected by the plate-shaped body, and a desired attraction force is secured.

In the invention according to claim 2, the wall panel includes a plate-shaped body, a backing, a sheet-shaped foamed resin layer, and a magnet sheet.
Similar to the first aspect, in the second aspect, the plate-shaped body is hard and does not bend. The foamed resin layer changes in thickness when subjected to surface pressure. Since the magnet sheet is a sheet, it bends.
When the magnetic adsorbent has a step, the magnet sheet tries to bend along the step. Although the plate-like body does not bend, the thickness of the foamed resin layer changes, so that the bending of the magnet sheet is allowed. As a result, the magnet sheet is sufficiently attracted to the magnetic attraction body even though the magnetic attraction body has a step, and a desired attraction force is secured.

  Similarly to the first aspect, in the second aspect, when the back surface of the plate-shaped body is curved due to production error or the like, the thickness of the foamed resin layer changes. The magnet sheet is attracted along the magnetic attraction body without being affected by the plate-shaped body, and a desired attraction force is secured.

In addition, in Claim 2, the plate-shaped body is backed.
Consider the form before attaching the foamed resin layer to the backing.
The plate-like body may be hit by a hard object and cracked. According to the second aspect of the invention, since the backing is attached to the plate-like body, even if the plate-like body is broken, there is no concern that the fragments will scatter.

  In the invention according to claim 3, the magnet sheet is slightly smaller than the plate-shaped body. The tip of a flat-blade screwdriver can be inserted into the back of the plate when removing the wall panel from the magnetic attraction body. Work to remove the wall panel can be done efficiently.

  In the invention according to claim 4, the foamed resin layer is made of a hard-type polyethylene foam. Polyethylene foam is highly recommended for its high resistance to humidity, resistance to brittle fracture at low temperatures, flexibility and excellent compression allowance, vigorous production, and easy availability.

  In the invention according to claim 5, the thickness of the foamed resin layer is 0.33 to 3.0 times the thickness of the magnet sheet. If the thickness of the foamed resin layer is less than 0.33 times the thickness of the magnet sheet, the amount of change in thickness will be insufficient. If the thickness of the foamed resin layer exceeds 3.0 times the thickness of the magnet sheet, the rigidity of the foamed resin layer becomes weak and there is a concern that the plate-like body may be lowered with respect to the magnet sheet.

  In the invention according to claim 6, the first panel includes a connecting mechanism mechanically connected to the second panel. The magnetic attraction force may be weakened by the dirt of the magnet sheet of the first panel. In this case, since the first panel is supported by the second panel by the connecting mechanism, there is no concern that it will come off the magnetic attraction body.

  In the invention according to claim 7, the connecting mechanism is an adhesive tape having an adhesive layer on one surface. Since the adhesive tape is simple, the cost of the connecting mechanism can be reduced.

It is a figure explaining the structure of the wall panel which concerns on this invention. It is sectional drawing of a wall panel and a magnetic attraction body. It is a figure explaining the procedure of attaching a wall panel to a magnetic adsorption body. FIG. 4 is a cross-sectional view of a type of wall panel and magnetic attractor. It is a perspective view explaining the example of a change of a wall panel. It is a figure explaining the structure of a trapezoidal pillar member. It is a figure explaining attachment / detachment of a wall panel. It is a figure explaining the further modification of a wall panel. It is a figure explaining the problem of the conventional magnetic tile.

  Embodiments of the present invention will be described below with reference to the accompanying drawings. The drawings should be viewed in the direction of the reference numerals.

  1 (a) is a front view of a wall panel 10 according to the present invention, FIG. 1 (b) is a sectional view taken along line bb of FIG. 1 (a), and FIG. 1 (c) is a portion c of FIG. 1 (b). FIG. 1D is an enlarged view of the adhesive tape 21 shown in FIG.

  As shown in FIG. 1 (c), the wall panel 10 includes a plate-shaped body 11, a backing plate 12 attached to the back surface of the plate-shaped body 11, and a sheet-shaped foamed resin attached to the back surface of the backing plate 12. The layer 13 includes a magnet sheet 14 attached to the back surface of the foamed resin layer 13, and an adhesive tape 21 as a connecting mechanism 20 partially attached to the back surface of the magnet sheet 14.

The plate-like body 11 may be made of any material as long as it is suitable for the surface layer material of the wall, but for example, natural stone plate, artificial stone plate, tile, porcelain plate, wood plate, resin plate, paperboard, metal plate, glass plate is recommended. To be done.
The stone plate or the metal plate may be a foamed resin plate on which a thin stone plate or a thin metal plate is attached in order to reduce the weight.
The stone plate may be incinerated ash, volcanic ash, pumice stone particles, sand, clay, industrial waste cemented or fired.

  The backing 12 is a member that prevents the fragments from scattering when the plate-like body 11 is broken, and is preferably paper, a resin sheet, or a resin net. The resin net is preferably a lattice network in which twisted yarns obtained by twisting very thin resin filaments are arranged in length and width.

  The foamed resin layer 13 is a light-weight material including a myriad of minute voids in the resin layer. The foamed resin is polystyrene foam, polyethylene foam, polypropylene foam, EVA crosslinked foam, PET resin foam, phenol resin foam, silicone resin foam, vinyl chloride foam, urea resin foam, acrylic resin foam. Polyimide resin foam or the like can be used.

  Among them, polyethylene foam is particularly recommended because it is highly resistant to humidity, brittle fracture is unlikely to occur at low temperatures, has excellent compressive strength while having flexibility, is actively produced, and is easily available. However, polyethylene foams include hard type and soft type. These characteristics will be described in detail.

The base material, polyethylene, has a density of 0.92 g / cm ³ .
The hard type has a density of 0.065 g / cm ³ , and when polyethylene is 1, the polyethylene-to-polyethylene (density ratio) is 0.07. 93% are hollow.
The soft type has a density of 0.025 g / cm ³ , and when polyethylene is 1, the polyethylene-to-polyethylene (density ratio) is 0.03. 97% are hollow.

Since the soft type is similar to a sponge, when the plate-shaped body 11 is pushed toward the magnetic attraction body, it easily sinks.
The hard type is sufficiently hard as compared with the soft type, and the amount of sinking is small even when the plate-shaped body 11 is pushed toward the magnetic attraction body.

Further, the foamed resin layer 13 is required to have rigidity that supports the plate-shaped body 11 against the magnet sheet 14. The soft type has greater rigidity than the hard type.
Therefore, as the foamed resin layer 13, a hard type polyethylene foam is recommended.
As the polyethylene foam, for example, double-sided adhesive tape model number 7785MT manufactured by Ebisu Kasei Co., Ltd. can be adopted.

  The magnet sheet 14 is made by adding a resin binder to iron oxide to form a sheet, and magnetizing the sheet.

  Recommended thicknesses and thickness ranges for each component are described below.

The thickness of the plate-like body 11 is recommended to be 10 mm, but it may be 3 to 20 mm.
The thickness of the backing 12 is recommended to be 0.5 mm, but may be 0.3 to 1 mm.
The thickness of the foamed resin layer 13 is recommended to be 0.9 mm, but may be 0.5 to 1.5 mm.
The thickness of the magnet sheet 14 is recommended to be 0.9 mm, but may be 0.5 to 1.5 mm.
Although the thickness of the adhesive tape 21 is recommended to be 0.1 m, it may be 0.07 to 0.5 mm.

  As shown in FIG. 1D, the adhesive tape 21 has an adhesive layer 22 on one side, and a release film 23 such as release paper is covered on half or a part of the one side. The peeling film 23 is a protective film that prevents the adhesive layer 22 from adhering to an object different from a predetermined object when carrying the adhesive tape 21. The protective film is peeled off from the adhesive layer 22 immediately before use to expose the adhesive layer 22.

  As shown in FIG. 1B, in the adhesive tape 21, the adhesive layer 22 is applied to the back surface of the magnet sheet 14 so that the release film 23 does not hang on the magnet sheet 14.

  As a result, as shown in FIG. 1A, the peeling film 23 of the adhesive tape 21 is protruding from the plate-shaped body 11. The plate-shaped body 11 is basically a square plate having a size of 100 mm to 600 mm square, but may have any shape such as a rectangle, a triangle, a hexagon, a circle, and an ellipse, and the size may be appropriately changed.

Preferably, the magnet sheet 14 is made one size smaller than the plate-shaped body 11. Specifically, the edge of the magnet sheet 14 is placed inside the edge of the plate-shaped body 11 by a distance L. The distance L is preferably 5 to 30 mm. When removing the wall panel 10 from the magnetic attraction body, the tip of a flat-blade screwdriver or spatula-shaped tool can be inserted into the back of the plate-like body, so that the wall panel can be removed efficiently.
Of course, as shown in FIG. 8 described later, the magnet sheet 14 may have the same size as the plate-like body 11.

In FIG. 2, it is considered to attach the wall panel 10 of the present invention to the magnetic attraction body 40 having the step 41 having the depth d (about 0.2 mm).
The surface of the magnetic attraction body 40 is coated beforehand with paint containing iron powder.
The foamed resin layer 13 having a thickness of about 0.9 mm changes in thickness.
Although the thickness of the magnet sheet 14 does not change, the thickness of the magnet sheet 14 is about 0.9 mm, so that the magnet sheet 14 is easily bent.

  Since the foamed resin layer 13 allows the magnet sheet 14 to bend, the magnet sheet 14 bends along the putty 42, and as a result, most of it is magnetically attracted to the magnetic attraction body 40.

As shown in the above table, it is recommended that the thickness of the foamed resin layer 13 be the same as the thickness of the magnet sheet 14.
However, if the depth d of the step 41 is small, the thickness of the foamed resin layer 13 can be 0.5 mm. If strong magnetic attraction is required, the thickness of the magnet sheet 14 should be 1.5 mm. In this case, the thickness of the foamed resin layer 13 is 0.33 times the thickness of the magnet sheet 14.

  If the depth d of the step 41 is larger, the thickness of the foamed resin layer 13 is 1.5 mm. If strong magnetic attraction is not required, the thickness of the magnet sheet 14 can be 0.5 mm. In this case, the thickness of the foamed resin layer 13 is 3.0 times the thickness of the magnet sheet 14.

  Therefore, the thickness of the foamed resin layer 13 may be selected from the range of 0.33 to 3.0 times the thickness of the magnet sheet 14.

When compared with the recommended thickness, the thickness of the foamed resin layer 13 is almost equal to the thickness of the magnet sheet 14. If the difference is plus or minus 10%, it can be said that they are substantially equal to each other. Therefore, it is further recommended that the thickness of the foamed resin layer 13 be within the range of 0.9 to 1.1 of the thickness of the magnet sheet 14. .
If they are made substantially equal to each other, if the thickness of one of the foamed resin layer 13 and the magnet sheet 14 is determined, the thickness of the other is easily determined, and the setting of the thickness is not lost.

Next, a procedure for attaching the wall panel 10 to the magnetic attraction body 40 will be described with reference to FIG.
As shown in FIG. 3A, a wall panel 10 serving as a reference is prepared. The reference wall panel 10 is referred to as a first panel 10A.
The wall panel 10 arranged above (or below) the first panel 10A serving as the reference is referred to as a second panel 10B.
The second panel 10B shown in FIG. 3B corresponds to the wall panel 10 shown in FIG. 3A without the adhesive tape 21.

As shown in FIG. 3C, the first panel 10A is magnetically attracted to a desired position of the magnetic attractor 40. Next, the peeling film 23 is removed. Then, the adhesive layer 22 is exposed.
The adhesive layer 22 is covered with the second panel 10B, and the second panel 10B is attached above the first panel 10A as shown in FIG. 3D. The second panel 10B is magnetically attracted to the magnetic attraction body 40 and is attached to the adhesive tape 21. Similarly, the second panel 10B is attached below the first panel 10A. The second panel 10B is also magnetically attracted to the magnetic attraction body 40 and attached to the adhesive tape 21.

It is assumed that part of the wall panels 10 moves from the back to the front in FIG. 3D due to an earthquake or the like.
During an earthquake, some of the wall panels (for example, the first panel 10A) are likely to come off because the shaking propagates like waves, but the remaining wall panels (for example, the second panel 10B) retain magnetic attraction. .
Since the second panel 10B is connected to the first panel 10A with the adhesive tape 21, the first panel 10A is prevented from coming off the magnetic attraction body 40.

Even under normal conditions, the magnetic attraction performance of some wall panels (for example, the first panel 10A) may deteriorate due to dirt or damage. Even in this case, since the second panel 10B is connected to the first panel 10A by the adhesive tape 21, the detachment of the first panel 10A from the magnetic attraction body 40 is suppressed.
Therefore, it can be said that the weakness of the magnet sheet 14 is covered with the adhesive tape 21.

  By the way, since the plate-shaped body 11 is made of any material, it is manufactured by various methods. In the case of firing, deformation may occur after cooling. When the sand is hardened with an adhesive, the volume of the liquid adhesive may shrink when it solidifies. In such a case, the plate-shaped body 11 is deformed, although slightly.

As shown in FIG. 4, when the back surface of the plate-shaped body 11 is a concave curved surface 15, the backing 12 is deformed following the curved surface 15. Since the thickness of the foamed resin layer 13 changes, the magnet sheet 14 remains along the magnetic attraction body 40, and the magnetic attraction performance is maintained.
The same applies to the case where the back surface of the plate-like body 11 is convexly curved or wavy.

  That is, the foamed resin layer 13 employed in the present invention has the function of maintaining the magnetic adsorption performance regardless of whether there are steps or irregularities on the side of the magnetic attraction body 40 or irregularities on the side of the plate-shaped body 11. Demonstrate.

Next, a modified example of the coupling mechanism 20 will be described.
5 (a) is an exploded perspective view, FIG. 5 (b) is a view from the arrow b of FIG. 5 (a), and FIG. 5 (c) is a view from the arrow c of FIG. 5 (a).

As shown in FIG. 5A, the connecting mechanism 20 has a trapezoidal pillar member 25 as a main component.
The reference first panel 10A is the wall panel 10 described in FIG. 1 with the adhesive tape 21 removed. Then, as shown in FIG. 5A, the first trapezoidal hole 16 for accommodating a part of the trapezoidal pillar member 25 is provided on the lower side of the plate-shaped body 11, and the trapezoidal pillar member is provided on the upper side of the plate-shaped body 11. It has a second trapezoidal hole 17 for accommodating the rest of 25.

The first trapezoidal hole 16 is a simple trapezoidal hole as shown in FIG.
On the other hand, as shown in FIG. 5C, the second trapezoidal hole 17 has a small triangular projecting portion 18 on the lower base of the trapezoid.

Similarly, the second panel 10B disposed on the first panel 10A also has the first trapezoidal hole 16 and the second trapezoidal hole 17. That is, the first panel 10A and the second panel 10B are the same.
The connecting mechanism 20 includes a first trapezoidal hole 16, a trapezoidal pillar member 25, and a second trapezoidal hole 17.

  The first trapezoidal hole 16 and the second trapezoidal hole 17 are formed by directly engraving the plate-shaped body 11 or formed on a resin piece or a light metal piece, and the resin piece or the light metal piece is set on a mold, You may make it obtain the plate-shaped body 11 by filling a form with ash, sand, or a binder.

  A structural example of the trapezoidal pillar member 25 will be described with reference to FIG. 6 (a) is a plan view of the trapezoidal pillar member 25, FIG. 6 (b) is a front view thereof, FIG. 6 (c) is a right side view thereof, and FIG. 6 (d) is a bottom view thereof. e) is a plan view of the jig 31.

  As shown in FIG. 6A, the trapezoidal pillar member 25 has a trapezoidal columnar shape with a narrow front surface 26 (upper bottom) and a wider back surface 27 (lower bottom), and as shown in FIG. It has a cam surface 28 that slopes downward from the front surface 26 to the back surface 27, and in addition, as shown in FIG. 6D, has a small triangular notch 29 at each end of the back surface 27. As shown in FIG. 6C, the axial length of the notch 29 is slightly longer than the depth of the second trapezoidal hole (FIG. 5, reference numeral 17).

  As shown in FIG. 6 (e), the jig 31 is a bifurcated fork member including a jig base portion 32 that is gripped by a finger of a person and two protrusions 33 extending from the jig base portion 32. The protrusion 33 has a size corresponding to the two cam surfaces 28 shown in FIG. 6B.

In FIG. 5, since the first trapezoidal hole 16, the trapezoidal pillar member 25, and the second trapezoidal hole 17 are trapezoidal, if the trapezoidal pillar member 25 rotates about the axis from the posture of the drawing, the first trapezoidal hole 16 and the second trapezoidal hole 17 cannot be inserted.
Therefore, the trapezoidal pillar member 25 is inserted into the first trapezoidal hole 16 or the second trapezoidal hole 17 only when the front surface 26 is on the front side (the plate-shaped body 11 side).

In addition, even if an attempt is made to insert the upper surface of the trapezoidal pillar member 25 shown in FIG. 6 (a) into the second trapezoidal hole 17 shown in FIG. 5 (c), it is blocked by the overhanging portion 18 and cannot be inserted. As a result, the upper surface of the trapezoidal pillar member 25 is inserted only into the first trapezoidal hole 16 shown in FIG.
On the other hand, since the bottom surface of the trapezoidal pillar member 25 shown in FIG. 6D has the notch 29, it can be inserted into the second trapezoidal hole 17 shown in FIG. 5C.

In FIG. 5A, the first panel 10A is magnetically attracted to a predetermined position of the magnetic attractor 40.
Next, the trapezoidal pillar member 25 is inserted into the second trapezoidal hole 17.
Next, the second panel 10B is arranged on the first panel 10A so that the first trapezoidal hole 16 is fitted on the upper part of the trapezoidal pillar member 25, and the magnetic attraction member 40 is magnetically attracted.

  When a problem occurs in the magnetic attraction force of one of the first panel 10A and the second panel 10B, since both the panels 10A and 10B are connected by the trapezoidal pillar member 25, one can be supported by the other. There is no concern that the panel 10A or the second panel 10B will come off the magnetic attraction body 40.

  It is possible that after attaching a large number of wall panels 10 to the magnetic attraction body 40, only one wall panel 10 is replaced with a new one due to scratches or stains. The replacement procedure at that time will be described with reference to FIG.

When replacing the first panel 10A, as shown in FIG. 7A, the jigs 31 are inserted into the upper joints and the lower joints of the first panel 10A, respectively. When inserted, the projection 33 pushes up the cam surface 28, so that the trapezoidal pillar member 25 rises.
As shown in FIG. 7B, the trapezoidal pillar member 25 has come out of the second trapezoidal hole 17.
As shown in FIG. 7C, only the first panel 10A is pulled out to the front. Next, a new first panel 10A is attached between the remaining second panel 10B and second panel 10B.
As described above, the first panel 10A can be replaced with a new one without moving the other panel 10B.

Next, a modified example of the wall panel 10 will be described.
The backing 12 described with reference to FIG. 1 is attached to the plate-shaped body 11 and plays a role of preventing scattering of fragments when the plate-shaped body 11 is broken. By the way, the foamed resin layer 13 is a member whose thickness changes, and can also serve as a backing for the plate-shaped body 11. By making it double, the backing 12 can be omitted.

  That is, the wall panel 10 shown in FIG. 8 includes a plate-shaped body 11, a sheet-shaped foamed resin layer 13 attached to the back surface of the plate-shaped body 11, and a back surface of the foamed resin layer 13. And a pressure-sensitive adhesive tape 21 as a connecting mechanism 20 partially attached to the back surface of the magnet sheet 14.

  Place a rectangular frame-shaped mold on a suitable flat stand, and pour the material (for example, sand mixed with adhesive, resin, cement, etc.) into this mold. When set, the plate-shaped body 11 is removed from the mold. A sheet-shaped foamed resin layer 13 is attached to the back surface of the plate-shaped body 11. When adopting such a manufacturing method, the structure of the wall panel 10 shown in FIG. 8 is suitable.

  The surface of the magnetic adsorbent 40 is slightly curved or is a surface such as a precursor wall, a partition wall, a sleeve wall, a rectangular board such as a whiteboard, an indoor bulletin board, an outdoor bulletin board, and a wall of an outdoor advertising tower. There is no limitation on the type, as long as it has a shallow step and can attract a magnet.

  In addition to the adhesive tape 21 and the trapezoidal pillar member 25, the main part of the connecting mechanism 20 is a male-female fitting that includes a convex portion provided on the upper side of the first panel 10A and a concave portion provided on the lower side of the second panel 10B. Alternatively, the mechanism may be any mechanism that mechanically connects the upper and lower wall panels 10 to each other.

Further, although the trapezoidal pillar member 25 has the upper bottom in the foreground, the lower bottom may be in the front or side.
If the trapezoid is considered as a distorted quadrilateral, the trapezoid can be changed to a distorted pentagon or hexagon, and therefore the column member 25 may be a distorted polygon.
Further, the trapezoidal pillar member 25 may be a pillar having a non-circular cross section such as an elliptical cross section, an oval oval or a semicircular cross section. With a non-circular cross section, there is no concern that the trapezoidal pillar member 25 will rotate around the axis.
Further, the trapezoidal pillar member 25 may be a simple round pin.

  The present invention is suitable for a wall panel attached to a magnetic attraction body.

  10 ... Wall panel, 10A ... 1st panel, 10B ... 2nd panel, 11 ... Plate-like body, 12 ... Backing, 13 ... Foam resin layer, 14 ... Magnet sheet, 20 ... Coupling mechanism, 21 ... Adhesive tape, 22 ... Adhesive layer, 23 ... Release film, 40 ... Magnetic adsorbent.

Claims (7)

A wall panel that is detachably attached to a magnetic attractor to which a magnet sheet is magnetically attracted,
A wall panel comprising a plate-shaped body, a sheet-shaped foamed resin layer bonded to the back surface of the plate-shaped body, and the magnet sheet bonded to the back surface of the foamed resin layer. A wall panel that is detachably attached to a magnetic attractor to which a magnet sheet is magnetically attracted,
A plate-like body, a backing attached to the back side of the plate-like body, a sheet-like foam resin layer attached to the back of the backing, and the magnet sheet attached to the back side of the foaming resin layer A wall panel characterized by. A wall panel according to claim 1 or claim 2,
The wall panel, wherein the magnet sheet is slightly smaller than the plate-like body in a front view. The wall panel according to any one of claims 1 to 3,
The wall panel, wherein the foam resin layer is made of a hard type polyethylene foam. The wall panel according to any one of claims 1 to 4,
The wall panel, wherein the foamed resin layer has a thickness of 0.33 to 3.0 times the thickness of the magnet sheet. The wall panel according to any one of claims 1 to 5,
When a certain wall panel is referred to as a first panel and a wall panel adjacently arranged on the first panel is referred to as a second panel,
The wall panel, wherein the first panel includes a connection mechanism mechanically connected to the second panel. The wall panel according to claim 6, wherein
The connecting mechanism is an adhesive tape having an adhesive layer on one side, and this adhesive tape is covered with a release film on half or part of the one side,
A wall panel, wherein the adhesive tape is attached to the back surface of the magnet sheet on the side of the first panel using the adhesive layer so that the release film projects from the first panel.

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