JP2020200724A - Wall panel - Google Patents

Abstract

To provide a wall panel in which a tray having a magnet sheet on the back surface is filled with a white sandbar, whose structure is capable of preventing the white sandbar from coming off the tray.SOLUTION: In a tray 20 including a bottom portion 21 and a wall portion 22, a return portion 23 is provided on the inner surface of the wall portion 22.EFFECT: After a long period of use, when a gap is generated between the bottom portion 21 and a white sandbar 11, the return portion 23 can prevent the white sandbar 11 from separating from the bottom portion 21.SELECTED DRAWING: Figure 1

Description

The present invention relates to a wall panel having Shirasu, which is a kind of volcanic ash, as a main part. In addition, on the front and back surfaces of a wall panel or the like, the "front surface" has two readings, a hail surface and a front surface. In this book, the opposite side of the back side is referred to as the "front side".

The volcanic ash deposited in the southern part of Kyushu is called "Shirasu". This shirasu is a powder that is solidified without mixing other soil with magma, and has innumerable cavities like pumice stone. Fine particles in the atmosphere can be taken into innumerable cavities.
Conventionally, Shirasu has been regarded as an obstacle, but it has been reviewed and it has been proposed to effectively utilize it as a wall panel (see, for example, Patent Document 1).

Patent Document 1 will be described with reference to the following figure.
FIG. 19 is a cross-sectional view of a conventional wall panel, and the wall panel 100 is embedded in a bottomed frame 101, a resin layer 102 provided on the outer bottom surface of the frame 101, and the resin layer 102. It is composed of a neodymium magnet 103 and a shirasu 104 fixed in a frame 101.

Since the neodymium magnet 103 magnetically attracts the vehicle wall, the wall panel 100 can be attached to the vehicle wall and removed from the vehicle wall at any time. Since the removable Silas 104 can purify the indoor air, the Silas 104 can be effectively used and the demand for it can be increased.

Since the neodymium magnet 103 has a large attractive force, the wall panel 100 can be stably attached to the body wall.
The shirasu 104 is fixed by pouring it into the frame body 101 and hardening it (Patent Document 1, paragraph 0020).

Although the wall panel 100 of Patent Document 1 has the above-mentioned advantages, the present inventors have verified and found that it has the following drawbacks.
First, when the shirasu 104 is poured into the frame 101 and hardened, the fixing condition is good at first, but after a lapse of time, a problem occurs in the fixing condition. That is, the coefficient of thermal expansion of Shirasu 104 and the coefficient of thermal expansion of the mold 101 are inevitably different. When the Shirasu 104 and the mold 101 repeatedly expand and contract due to changes in the ambient temperature, a gap is inevitably generated between the mold 101 and the Shirasu 104 due to the difference in the coefficient of thermal expansion. This gap is local at first, but gradually widens. When it spreads beyond a certain level, the shirasu 104 comes off from the mold 101. If it comes off and falls, the Shirasu 104 will be damaged. Before it comes off, it needs to be repaired with an adhesive, which increases the repair cost. This hinders the demand for the wall panel 100 having the Shirasu 104 as a main part.
In order to stimulate the demand for the wall panel 100 having the shirasu 104 as a main part, a structure that does not cause the shirasu 104 to come off from the frame 101 even after long-term use is required.

Secondly, the neodymium magnet 103 causes rust in about one week at the earliest, although it depends on the state of use, resulting in a decrease in magnetic force (Patent Document 2, paragraph 0004).
FIG. 20 is an enlarged view of 20 parts of FIG. 19, and the pillar-shaped neodymium magnet 103 is embedded in the resin layer 102. Since the neodymium magnet 103 is surrounded by the resin layer 102, there is no concern that it will rust for the time being.
However, the resin layer 102 inevitably deteriorates when exposed to ultraviolet rays for a long period of time. This deterioration appears as fine hair cracks.

As shown in FIG. 21 (a), the hair crack 106 is formed in the thin resin portion 105 surrounding the neodymium magnet 103. The hair crack 106 gradually grows. External moisture invades through the grown hair crack 106 and reaches the neodymium magnet 103. Then, the neodymium magnet 103 rusts. When a metal becomes an oxide, its volume increases and it swells. Due to this bulge, a large crack is formed in the thin resin portion 105.

As shown in FIG. 21B, when the wall panel 100 (resin layer 102) is removed from the vehicle wall 107 as part of the routine work, a neodymium magnet 103 having a large attractive force remains on the vehicle wall 107. That is, the neodymium magnet 103 falls off from the wall panel 100 (resin layer 102). This hinders the demand for the wall panel 100 having the Shirasu 104 as a main part.
In order to stimulate the demand for the wall panel 100 having the Shirasu 104 as a main part, a magnet structure that does not rust even after long-term use is required.

Third, the wall panel 100 is easily stolen.
The conventional wall panel 100 has an advantage that it can be removed from the body wall at any time. By the way, the wall panel 100 may be provided in a hotel guest room. An unspecified number of people have the opportunity to touch the wall panel 100 and are vulnerable to theft. This hinders the demand for the wall panel 100 having the Shirasu 104 as a main part.
In order to stimulate the demand for the wall panel 100 having the Shirasu 104 as a main part, it is required to prevent the wall panel 100 from being stolen.

That is, there is a concern that the Shirasu 104 will come off from the frame 101, there is a concern that the neodymium magnet 103 will rust, and there is a concern that the wall panel 100 will be stolen, which becomes a bottleneck and the demand for the Shirasu 104 is sluggish. It can be said that there is. If all or part of these problems can be solved, the demand for Shirasu 104 can be increased.

Utility Model Registration No. 3216877 Utility Model Registration No. 3169383 Gazette

An object of the present invention is to provide a technique capable of increasing the demand for shirasu, and therefore, there is no concern that the shirasu will come off from the frame (tray), there is no concern that the magnet will rust, and the wall panel. The challenge is to provide a wall panel with a structure that can achieve at least one of the things that can be stolen.

The invention according to claim 1 is filled in the tray so as to be in contact with a tray including a bottom portion and a wall portion erected from the edge of the bottom portion, and the front surface of the bottom portion and the inner surface of the wall portion. In a wall panel composed of a shirasu and a connecting member provided on the back surface of the bottom portion and connecting the tray to the vehicle wall.
The inner surface of the wall portion is provided with a return portion for preventing the shirasu from separating from the bottom portion.

The invention according to claim 2 is filled in the tray so as to be in contact with a tray including a bottom portion and a wall portion erected from the edge of the bottom portion, and the front surface of the bottom portion and the inner surface of the wall portion. In a wall panel composed of a shirasu and a connecting member provided on the back surface of the bottom portion and connecting the tray to the vehicle wall.
An anchor is erected on the front surface of the bottom portion to prevent the shirasu from separating from the bottom portion.

According to the third aspect of the present invention, the tray is filled with a tray including a bottom portion and a wall portion erected from the edge of the bottom portion, and the tray so as to be in contact with the front surface of the bottom portion and the inner surface of the wall portion. In a wall panel composed of a shirasu and a connecting member provided on the back surface of the bottom portion and connecting the tray to the vehicle wall.
On the back surface of the bottom portion, an island portion is provided in the center, a groove portion is provided so as to surround the island portion, an outer edge portion is provided so as to surround the groove portion, and the groove portion is crossed from the outer edge portion to the island portion. Has a bridge part to
The connecting member includes a magnet sheet in which ferrite powder is hardened with a binder and magnetized, a cushion layer fixed to one surface of the magnet sheet, and a surface far from the magnet sheet. It consists of an adhesive layer provided on the cushion layer.
It is characterized in that the connecting member is provided in the groove portion divided by the bridge portion so that the adhesive layer hits the bottom of the groove portion.

The invention according to claim 4 is the wall panel according to claim 3.
The connecting member is characterized in that a part thereof protrudes from the island portion, the bridge portion, and the outer edge portion.

The invention according to claim 5 is filled in the tray so as to be in contact with a tray including a bottom portion and a wall portion erected from the edge of the bottom portion, and the front surface of the bottom portion and the inner surface of the wall portion. In a wall panel composed of a shirasu and a connecting member provided on the back surface of the bottom portion and connecting the tray to the vehicle wall.
On the back surface of the bottom portion, an island portion is provided in the center, a groove portion is provided so as to surround the island portion, an outer edge portion is provided so as to surround the groove portion, and the groove portion is crossed from the outer edge portion to the island portion. Has a bridge part to
The connecting member is composed of an aluminum foil, a first thermoplastic resin layer provided on one surface of the aluminum foil, and a second thermoplastic resin layer provided on the other surface.
The aluminum foil is characterized in that it is attached to the island portion via the first thermoplastic resin layer.

The invention according to claim 6 is the wall panel according to claim 5.
The outer surface of the wall portion is characterized in that a message explaining where the aluminum foil is attached to the bottom portion is displayed.

The invention according to claim 7 is the wall panel according to any one of claims 1 to 6.
This wall panel is characterized in that the cross section has a substantially trapezoidal shape with a narrow body side.

The invention according to claim 8 is the wall panel according to any one of claims 1 to 7.
This tray is characterized by being made of resin.

The invention according to claim 9 is the wall panel according to any one of claims 1 to 7.
This tray is characterized by being made of wood or wood.

In the invention according to claim 1, a return portion is provided on the inner surface of the wall portion. This return section prevents the shirasu from coming off the tray.
That is, the present invention provides a wall panel having a structure in which the shirasu does not come off from the tray, and an increase in demand for the shirasu can be expected.

In the invention according to claim 2, an anchor is erected at the bottom. This anchor prevents the shirasu from coming off the tray.
That is, the present invention provides a wall panel having a structure in which the shirasu does not come off from the tray, and an increase in demand for the shirasu can be expected.

In the invention according to claim 3, the tray has an island portion in the center of the back surface, a groove portion so as to surround the island portion, an outer edge portion so as to surround the groove portion, and an island from the outer edge portion. Since the portion has a bridge portion that crosses the groove portion, the flexural rigidity and the flexural rigidity can be increased as compared with a simple flat plate. If the flexural rigidity and the flexural rigidity are large, warpage and bending can be suppressed.
If the flexural rigidity and the flexural rigidity are large, warpage and bending can be suppressed even in a wall panel having a large size.
In addition, since a magnet sheet whose main material is ferrite powder is used for the connecting member, there is no concern that the connecting member will rust.
That is, according to the present invention, it is possible to provide a wall panel in which there is no concern that the magnet will rust, and an increase in demand for Shirasu can be expected.

In the invention according to claim 4, since a part of the connecting member protrudes from the bottom and the connecting member has a cushion layer, the wall panel can be stably attached to an uneven body wall.

In the invention according to claim 5, similarly to claim 3, the tray has an island portion in the center of the back surface, a groove portion so as to surround the island portion, and an outer edge portion so as to surround the groove portion. However, since it has a bridge portion that crosses the groove portion from the outer edge portion to the island portion, the bending rigidity and the bending rigidity are larger than those of a simple flat plate, and even if the wall panel has a large size, it warps. And bending can be suppressed.
In addition, an aluminum foil is attached to the island via the first thermoplastic resin layer. The aluminum foil is attached to the body wall via the second thermoplastic resin layer. By melting and solidifying the second thermoplastic resin layer, the wall panel is fixed to the body wall and is less likely to be stolen.
That is, the present invention provides a wall panel that is not likely to be stolen, and an increase in demand for Shirasu can be expected.

In the invention according to claim 6, a message explaining where the aluminum foil is attached to the bottom portion is displayed on the outer surface of the wall portion. Shirasu can be seen on the front of the wall panel, and the aluminum foil on the back cannot be seen. However, by having the worker read the message, the removal work can be performed efficiently.

In the invention according to claim 7, the wall panel has a substantially trapezoidal cross section narrow on the body wall side. When a plurality of wall panels are densely arranged, the wall panels can be attached even if the body wall is a curved surface or a curved surface.

In the invention of claim 8, the tray is made of resin. By preparing the mold, the tray can be mass-produced.

In the invention of claim 9, the tray is made of wood or wood. Since the shirasu is a natural product and the wall surrounding the shirasu is wood or wood, a wall panel with a human-friendly impression is provided as compared with an inorganic man-made product.

It is sectional drawing of the wall panel which concerns on this invention. It is the 2 arrow view of FIG. 1, and is the bottom view of the wall panel which concerns on this invention. (A) is an enlarged cross-sectional view of the cushioned magnet sheet before being attached to the groove, and (b) is an enlarged cross-sectional view of the cushioned magnet sheet after being attached to the groove. It is a working figure of a cushion layer. (A) is an enlarged cross-sectional view of the aluminum foil-containing plastic resin layer before being attached to the island, and (b) is an enlarged cross-sectional view of the aluminum foil-containing plastic resin layer after being attached to the island. (A), (c), and (d) are views for explaining the procedure for attaching the wall panel to the body wall, and (b) is a view taken along the line b of (a). (A) is a diagram showing a form in which a wall panel is attached to a flat body wall, and (b) is a diagram showing a form in which a wall panel is attached to a curved body wall. (A) to (d) are views for explaining various forms of wall panels, and (e) is a cross-sectional view taken along the line EE of (d). It is sectional drawing of the mold for injection molding a tray. It is a front view of the tray obtained by injection molding. It is sectional drawing of the wall panel which changed the bottom part into a simple shape. It is sectional drawing which shows the modification example of a mold. It is a figure explaining the attachment procedure of an anchor. It is sectional drawing of the wall panel provided with an anchor. It is sectional drawing of the wall panel which concerns on the modification. It is a bottom view of the wall panel which concerns on the modification. It is sectional drawing of the wall panel which concerns on a further modification example. It is a bottom view of the wall panel which concerns on a further modification example. It is sectional drawing of the conventional wall panel. It is a 20-part enlarged view of FIG. (A) and (b) are diagrams for explaining how the neodymium magnet falls off.

Embodiments of the present invention will be described below with reference to the accompanying drawings.

As shown in FIG. 1, the wall panel 10 includes a deep dish-shaped tray 20, a shirasu 11 filled on the front surface side of the tray 20, and a tray 20 provided on the back surface of the tray 20. It is composed of a connecting member 40 connected to (FIG. 4, reference numeral 13).

The tray 20 includes a bottom portion 21 and a wall portion 22 erected from the edge of the bottom portion 21. The tray 20 may be made of resin, wood, or metal. In the case of wood, it may be made of wood obtained by solidifying a piece of wood or wood chips.
When the thermoplastic resin layer 41 containing aluminum foil, which will be described later, is used for the connecting member 40, the tray 20 is made of resin or wood. This is because Joule heat is not generated if it is made of resin or wood.

The wall portion 22 may form an angle of 90 ° with the bottom portion 21, but in this embodiment, the wall portion 22 is tilted so that the cross section exhibits a substantially trapezoidal shape with the body wall side narrow. That is, the pair of facing wall portions 22 are opened so as to be separated from the bottom portion 21.

Shirasu 11 is a solid substance obtained by pouring it into a tray 20 that also serves as a mold and drying it.
The shirasu 11 is adhered to the inner surface of the wall portion 22 and the upper surface of the bottom portion 21, but the adhesive strength may decrease after a long period of time. When the adhesive strength is lowered, the shirasu 11 is likely to come off (fall off) from the tray 20. In particular, when the pair of wall portions 22 facing each other are opened as they are separated from the bottom portion 21, they are more likely to come off.

As a countermeasure, a return portion 23 is provided on the inner surface of the wall portion 22. The "return" of a fishing hook is a protrusion that prevents the fish caught on the hook from coming off. The return portion 23 serves to prevent the Shirasu 11 from separating from the bottom portion 21. Therefore, according to this embodiment, it is possible to prevent the Shirasu 11 from coming off from the tray 20.

The connecting member 40 includes a thermoplastic resin layer 41 containing aluminum foil provided in the center of the back surface of the bottom portion 21, and a cushioned magnet plate 51 provided on the back surface of the bottom portion 21 at an outer position of the thermoplastic resin layer 41 containing aluminum foil. Both or one of them. Details of the thermoplastic resin layer 41 containing aluminum foil and the cushioned magnet plate 51 will be described later.

As shown in FIG. 2, the tray 20 has an island portion 24 in the center of the bottom portion 21, a moat-shaped groove portion 25 surrounding the island portion 24, and an outer edge portion 26 so as to surround the groove portion 25. However, there are a plurality of (four in this example) bridge portions 27 that cross the groove portion 25 from the outer edge portion 26 to the island portion 24.

The bottom portion 21 may be a simple flat plate, but its flexural rigidity and flexural rigidity are small, and warpage (warp) and bending occur when used for a long time.
On the other hand, in this embodiment, the staircase shape is formed as shown in FIG. 1, the section modulus and the moment of inertia of area are increased, and the bridge portion 27 shown in FIG. 2 is provided, so that the bending rigidity and the bending rigidity are increased. growing. If the flexural rigidity and flexural rigidity are large, there is no concern that warpage or bending will occur even after long-term use.

The larger the vertical and horizontal dimensions of the bottom portion 21, the more remarkable the warp and bend. If the flexural rigidity and the flexural rigidity are large as in this embodiment, there is no need to worry about it. The size of the wall panel 10 can be increased by forming the staircase shape as shown in FIG.

Next, the structure of the cushioned magnet plate 51 will be described with reference to FIG.
As shown in FIG. 3A, the cushioned magnet plate 51 includes a magnet sheet 52, a cushion layer 53 fixed to one surface of the magnet sheet 52 (the surface on the groove 25 side), and the cushion layer. It is composed of an adhesive layer 54 provided on one surface of 53 (the surface on the groove 25 side) and a release paper 55 provided on one surface of the adhesive layer 54 (the surface on the groove 25 side).

Peel off the release paper 55. The exposed adhesive layer 54 is applied to the bottom of the groove 25 for adhesion.
As shown in FIG. 3B, the cushioned magnet plate 51 is fixed to the groove 25 so that the adhesive layer 54 touches the bottom of the groove 25.
In the fixed state, a part of the magnet sheet 52 (that is, a part of the cushioned magnet plate 51) protrudes from the island portion 24, the bridge portion 27, and the outer edge portion 26.

As shown in FIG. 4, the wall panel 10 is applied to the body wall 13. Magnetic paint is applied to the surface of the body wall 13.
Even if the body wall 13 that should be flat is wavy in a V shape, the cushion layer 53 expands and contracts so that the magnet sheet 52 completely hits the body wall 13 and is attracted to the body wall 13. Therefore, the cushion layer 53 plays a role of absorbing small-scale waviness of the body wall 13.

Further, the magnet sheet 52 is made of ferrite powder as a main material, is bonded with a binder such as chlorine-based polyethylene to form a sheet, and the produced sheet is magnetized.
Since ferrite is iron oxide and is originally oxidized, it will not be oxidized any more and will not rust even if it comes into contact with oxygen or water in the atmosphere.

Neodymium magnets have a strong magnetic force but rust. On the other hand, ferrite magnets have a weak magnetic force but do not rust. By forming the ferrite magnet into a sheet (magnet sheet 52), the contact area with the body wall is increased and the necessary connecting force is secured.

Next, the structure of the thermoplastic resin layer 41 containing aluminum foil will be described with reference to FIG.
As shown in FIG. 5A, the thermoplastic resin layer 41 containing the aluminum foil is the first thermoplastic resin layer provided on the aluminum foil 42 and one surface (the surface on the island portion 24 side) of the aluminum foil 42. It is composed of 43 and a second thermoplastic resin layer 44 provided on the other surface (the surface on the vehicle body wall 13 side).
As shown in FIG. 5B, the aluminum foil 42 is attached to the island portion 24 via the first thermoplastic resin layer 43. This pasting procedure will be described with reference to FIG.

As shown in FIG. 6A, the wall panel 10 is applied to a predetermined position on the body wall 13. At this time, a pair of left and right cushioned magnet plates 51 play a role of temporarily fixing the wall panel 10 to the body wall 13. That is, even if the worker releases his / her hand, the wall panel 10 does not slip down from the body wall 13. Further, since the temporary fixing is performed by magnetic adsorption, the position of the wall panel 10 can be freely changed (finely adjusted).

As shown in FIG. 6B, a message 28 such as "There is a XX mm square aluminum foil in the center of the bottom" is provided on the outer surface of the wall portion 22. That is, on the outer surface of the wall portion 22, a message 28 explaining where the aluminum foil is attached to the bottom portion is displayed.

As shown in FIG. 6C, the electromagnetic induction heater 60 is prepared. This electromagnetic induction heating tool 60 is the same as an IH (electromagnetic induction heating) device which is a kind of household cooker, and has an electric iron-shaped pad 61, a connection cable 62, a high frequency power supply 63, and a power cable. It consists of 64. The high-frequency power supply 63 is provided with a time setting unit for setting the energization time (several seconds).

When energized, magnetic field lines 65 are generated.
As shown in FIG. 6D, the magnetic field lines 65 generate an eddy current inside the aluminum foil 42, and the eddy current and the electrical resistance of the aluminum generate Joule heat. The Joule heat softens the first and second thermoplastic resin layers 43 and 44 and partially melts them.
As shown in FIG. 6D, when the energization is stopped, the first and second thermoplastic resin layers 43 and 44 cool and harden. In this process, the aluminum foil 42 is adhesively fixed to the body wall 13.

If the wall panel 10 is attached to a place where an unspecified number of people have the opportunity to touch it, such as a hotel, the wall panel 10 is adhesively fixed by the second thermoplastic resin layer 44, so that there is no risk of it being stolen. Absent.

By the way, based on FIG. 6, another worker may remove the wall panel 10 from the vehicle wall 13 after a while after the wall panel 10 is adhesively fixed to the vehicle wall 13.
When the wall panel 10 is viewed from the indoor side, only the shirasu 11 and the wall portion 22 can be seen, and the aluminum foil 42 on the back surface cannot be seen.
However, another worker knows the position of the aluminum foil 42 by looking at the message 28 shown in FIG. 6B, decides the place to hit the pad 61, and determines the size of the aluminum foil 42 (○○ mm). It is possible to determine the energizing time (○ seconds) by knowing.

In the first and second thermoplastic resin layers 43 and 44, it is preferable that the second thermoplastic resin layer 44 is made of a resin having a lower melting point than the first thermoplastic resin layer 43. This is because the wall panel 10 always comes off from the body wall 13 at the location of the second thermoplastic resin layer 44. However, it is necessary to pay close attention not to mistake the front and back of the thermoplastic resin layer 41 containing aluminum foil. It is also one method to call attention by changing the colors of the first thermoplastic resin layer 43 and the second thermoplastic resin layer 44.

In this example, the first thermoplastic resin layer 43 and the second thermoplastic resin layer 44 are the same. Then, when the aluminum foil 42 is removed from the body wall 13 by energizing by another worker, it is separated at the part of the second thermoplastic resin layer 44 and at the part of the first thermoplastic resin layer 43. It is expected that.

The thermoplastic resin layer 41 containing aluminum foil is treated as a consumable item.
That is, when the aluminum foil 42 is removed from the body wall 13, if the aluminum foil 42 is attached to the wall panel 10, the thermoplastic resin layer 41 containing the aluminum foil is peeled off from the wall panel 10 to remove the new aluminum foil. Replace with the filled thermoplastic resin layer 41.

Alternatively, when the aluminum foil 42 is removed from the vehicle wall 13, if the aluminum foil 42 is attached to the vehicle wall 13, the thermoplastic resin layer 41 containing the aluminum foil is peeled off from the vehicle wall 13 to make a new one. The thermoplastic resin layer 41 containing aluminum foil is attached to the wall panel 10.
Therefore, no actual damage occurs even if the first thermoplastic resin layer 43 and the second thermoplastic resin layer 44 are separated from each other. Needless to say, there is no problem even if both parts of the first and second thermoplastic resin layers 43 and 44 are separated at the same time.

By making the first thermoplastic resin layer 43 and the second thermoplastic resin layer 44 the same, the production of the thermoplastic resin layer 41 containing aluminum foil can be facilitated, the production cost can be reduced, and the front and back can be distinguished. Since there is no such thing, the construction is easy and the construction cost can be reduced.

Next, in the wall panel 10, the action of inclining the pair of facing wall portions 22 so as to open away from the bottom portion 21 will be described with reference to FIG. 7.
As shown in FIG. 7A, the wall panel 10 is attached to the flat body wall 13 without any gaps. If a step (a step in the vertical direction in the drawing) occurs on the adjacent wall panels 10, an appropriate shim is bitten between the lower wall panel 10 and the body wall 13 to move the adjacent wall panels 10 together. Make it flush.

As shown in FIG. 7B, the wall panel 10 can be attached to the non-flat body wall 13 (curved wall, curved wall, large-diameter cylinder) without any gap. If a step is generated on the adjacent wall panels 10, an appropriate shim is bitten between the lower wall panel 10 and the body wall 13 to make them flush with each other.

An example of the shape of the wall panel 10 according to the present invention will be described with reference to FIG.
As shown in FIG. 8A, the wall panel 10 is square in front view.
As shown in FIG. 8B, the wall panel 10 is a regular hexagon when viewed from the front.
As shown in FIG. 8C, the wall panel 10 is a perfect circle when viewed from the front.
As shown in FIG. 8D, the wall panel 10 is an equilateral triangle when viewed from the front.
Therefore, the external shape of the wall panel 10 is arbitrary. However, when laying multiple sheets in honey, squares, regular hexagons, and equilateral triangles with the same side length are desirable.

FIG. 8E is a cross-sectional view taken along the line e-e of FIG. 8D, and a recess 29 as a tool insertion portion may be provided on the back surface of the bottom portion 21 of the wall panel 10. When removing the wall panel 10 from the body wall 13, the tip of a spatula-shaped tool or a flat-blade screwdriver is recessed and the 29 is slightly slid. Then raise the tool or flat-blade screwdriver. The wall panel 10 can be easily removed by the principle of leverage.

As shown in FIG. 8D, it is recommended that the recess 29 be locally provided at the center of each side of the wall panel 10. Although the figure is omitted, the same applies to FIGS. 8A to 8C. The number and position of the dents 29 may be arbitrarily changed.

An example of the method for manufacturing the tray 20 described with reference to FIG. 1 will be described with reference to FIG.
As shown in FIG. 9, the lower die 71, the upper die 72, the slide die 73 movably attached to the upper die 72, and the cylinder unit 74 built in the upper die 72 to move the slide die 73. Prepare the mold 70.

Next, the upper die 72 is aligned with the lower die 71, and the slide die 73 is advanced. The melted resin material is injection-filled into the obtained cavity 75. When the resin material has hardened, the slide mold 73 is retracted by the cylinder unit 74. Due to this retreat, the slide type 73 is disengaged from the return portion 23. Next, the upper mold 72 is removed from the lower mold 71. The resin molded product separates from the lower mold 71 together with the upper mold 72. The tray 20 can be obtained by removing the resin molded product from the upper mold 72.

FIG. 10 shows a plan view of the obtained tray 20, and of the four wall portions 22 of the tray 20, the return portions 23 are formed on the two facing wall portions 22. The structure of the upper mold 72 becomes relatively simple.

Although the structure of the upper mold 72 becomes more complicated, it is permissible to form the return portion 23 on all the four wall portions 22 of the tray 20. Alternatively, it is permissible to form a return portion 23 on one of the four wall portions 22 of the tray 20 to simplify the structure of the upper mold 72.

When the tray 20 is made of wood or wood, a thick material can be hollowed out to obtain the structures shown in FIGS. 1 and 2. Further, the bottom portion 21 and the wall portion 22 are manufactured separately, and the wall portion 22 is adhesively fixed or screwed to the bottom portion 21 to obtain the tray 20. In either case, since the wood or wood material is easy to cut, the return portion 23 can be easily formed.

Further, when the tray 20 is made of a metal such as a light metal, the structure shown in FIGS. 1 and 2 can be obtained by press-molding the blank material. Further, the bottom portion 21 and the wall portion 22 are separately press-molded, and the wall portion 22 is welded and fixed to the bottom portion 21 or fixed with screws to obtain the tray 20. In either case, the return portion 23 is easily formed.

By the way, since the tray 20 described with reference to FIG. 2 has an island portion 24 and a bridge portion 27, warpage and bending are unlikely to occur. Therefore, it is suitable for a wall panel 10 having a relatively large size.
On the other hand, since warpage and bending are not noticeable in the relatively small wall panel 10, it is possible to reduce the bending rigidity and the bending rigidity. The structure of the wall panel 10 suitable at this time will be described with reference to FIG.

As shown in FIG. 11, the bottom portion 21 of the wall panel 10 is flat, and a cushioned magnet plate 51 is attached to the back surface of the flat bottom portion 21. In this case, the cushioned magnet plate 51 may be a cushionless magnet plate (composed of a magnet sheet 52 shown in FIG. 3 and an adhesive layer 54 formed on one surface of the magnet sheet 52).

That is, the wall panel 10 is attached to the tray 20 so as to be in contact with the tray 20 composed of the bottom portion 21 and the wall portion 22 erected from the edge of the bottom portion 21, the front surface of the bottom portion 21, and the inner surface of the wall portion 22. The shirasu 11 to be filled and the cushioned magnet plate 51 or the uncushioned magnet plate as a connecting member provided on the back surface of the bottom portion 21 and connecting the tray 20 to the vehicle wall are formed, and the shirasu 11 is formed on the inner surface of the wall portion 22. A return portion 23 is provided to prevent the magnet from separating from the bottom portion 21.

The example in which the return portion 23 is provided on the wall panel 10 has been described above in order to prevent the Shirasu 11 from falling off. However, the dropout of Shirasu 11 can also be prevented by the anchor.
A specific example thereof will be described with reference to FIGS. 12 to 14.

As shown in FIG. 12, the lower mold 71 and the upper mold 72 are prepared. A nut 76 is placed on the lower mold 71, and the nut 76 is held down by the upper mold 72. The melted resin material is injection-filled into the cavity 75 between the lower mold 71 and the upper mold 72.

As shown in FIG. 13, a tray 20 in which the nut 76 is inserted is obtained. In the obtained tray 20, the bolt 81 is screwed into the nut 76. A large-diameter disk, a square rectangular plate, or a cross-shaped plate 82 is attached to the bolt 81 in the middle of the length direction.

As shown in FIG. 14, the tray 20 is filled with Shirasu 11. A bolt 81 is buried in this shirasu 11. After this, the plate 82 exerts a supporting action to prevent the shirasu 11 from separating from the bottom 21.
The component composed of the nut 76, the bolt 81, and the plate 82 is called an anchor 80.

The configuration of the anchor 80 can be changed as appropriate, and for example, the plate 82 may be changed to a metal lath (wire mesh) or a resin net. Further, although the upper mold 72 becomes complicated, the tip (lower end) of the bolt 81 may be directly embedded in the resin and the nut 76 may be omitted. Further, the bolt 81 may be changed to a round bar, and the tip (state) of the round bar may be bent into an L shape to omit the plate 82.

Next, a modified example of the wall panel 10 according to the present invention will be described with reference to FIGS. 15 and 16.
As shown in FIG. 15, the connecting member 40 may be only the cushioned magnet plate 51.
That is, the tray 20 is filled with the tray 20 including the bottom portion 21 and the wall portion 22 erected from the edge of the bottom portion 21 so as to be in contact with the front surface of the bottom portion 21 and the inner surface of the wall portion 22. In the wall panel 10 composed of the shirasu 11 and the connecting member 40 provided on the back surface of the bottom portion 21 and connecting the tray 20 to the vehicle wall.
On the back surface of the bottom portion 21, an island portion 24 is provided in the center, a groove portion 25 is provided so as to surround the island portion 24, and an outer edge portion 26 is provided so as to surround the groove portion 25. The island portion 24 has a bridge portion 27 that crosses the groove portion 25.
The connecting member 40 includes a magnet sheet (FIG. 3, reference numeral 52) in which ferrite powder is hardened with a binder and subjected to a magnetization treatment, and a cushion layer (FIG. 3, reference numeral 52) fixed to one surface of the magnet sheet 52. Reference numeral 53) is composed of an adhesive layer (FIG. 3, reference numeral 54) provided on the cushion layer 53 on a surface farther from the magnet sheet 52.
A wall panel 10 is provided in which the connecting member 40 is provided in the groove 25 divided by the bridge 27 so that the adhesive layer 54 hits the bottom of the groove 25.

In this case, as shown in FIG. 16, the cushioned magnet plate 51 has a trapezoidal shape slightly smaller than the trapezoidal groove portion 25 so as to increase the suction area.
Although it is difficult to prevent theft, it can be easily attached to and detached from the body wall at any time.

Next, a further modification example of the wall panel 10 according to the present invention will be described with reference to FIGS. 17 and 18.
As shown in FIG. 17, the connecting member 40 may be only the thermoplastic resin layer 41 containing aluminum foil.
That is, the tray 20 is filled with the tray 20 including the bottom portion 21 and the wall portion 22 erected from the edge of the bottom portion 21 so as to be in contact with the front surface of the bottom portion 21 and the inner surface of the wall portion 22. In the wall panel 10 composed of the shirasu 11 and the connecting member 40 provided on the back surface of the bottom portion 21 and connecting the tray 20 to the vehicle wall.
On the back surface of the bottom portion 21, an island portion 24 is provided in the center, a groove portion 25 is provided so as to surround the island portion 24, and an outer edge portion 26 is provided so as to surround the groove portion 25. The island portion 24 has a bridge portion 27 that crosses the groove portion 25.
The connecting member 40 includes an aluminum foil (FIG. 5, reference numeral 42), a first thermoplastic resin layer (FIG. 5, reference numeral 43) provided on one surface of the aluminum foil 42, and a second surface provided on the other surface. It consists of two thermoplastic resin layers (FIG. 5, reference numeral 44).
The wall panel 10 is provided, characterized in that the aluminum foil 42 is attached to the island portion 24 via the first thermoplastic resin layer 43.
In this case, since the cushioned magnet plate 51 is unnecessary, the cost of the wall panel 10 can be reduced.

The connecting member 40 according to claims 1 and 2 may be a thermoplastic resin layer 41 containing aluminum foil or a magnet plate 51 with a cushion described in the examples, or may be a simple magnet sheet.

In addition, Shirasu 11 can be changed to volcanic ash from other regions (Kanto loam layer, etc.). It is also possible to change Shirasu 11 to diatomaceous earth. Further, the shirasu 11 may be granular or powdery stone, ceramic, phosphorescent stone, metal, glass, wood, soil or clay, in addition to shirasu or diatomaceous earth having no fixed form.

Further, the return portion 23 may be added to the wall panel 10 shown in FIG. That is, the anchor 80 and the return portion 23 may be used to further strengthen the measures against dropping of the shirasu 11.

Further, the return portion 23 shown in FIG. 1 may be integrally formed with the wall portion 22, or may be formed by separately producing the return portion 23 and adhering or screwing it to the inner surface of the wall portion 22. Further, the return portion 23 may be a bolt standing on the inner surface of the wall portion 22.
Further, the return portion 23 may be a countersunk screw penetrating from the outer surface to the inner surface of the wall portion 22. If it is a countersunk screw, the countersunk head is recessed into the outer surface of the wall portion 22, so that it is inconspicuous, and the tip protrudes from the inner surface of the wall portion 22, and this protruding portion serves as the return portion 23.
Therefore, the shape of the return portion 23 is arbitrary.

The present invention is suitable for a wall panel that is detachably attached to a body wall of a house, a hotel, an office, a factory, a store, a hospital, a school, or the like.

10 ... wall panel, 11 ... silas, 13 ... body wall, 20 ... tray, 21 ... bottom, 22 ... wall, 23 ... return, 24 ... island, 25 ... groove, 26 ... outer edge, 27 ... bridge Part, 28 ... Message, 40 ... Connecting member, 41 ... Thermoplastic resin layer with aluminum foil, 42 ... Aluminum foil, 43 ... First thermoplastic resin layer, 44 ... Second thermoplastic resin layer, 51 ... Cushioned magnet plate , 52 ... Magnet sheet, 53 ... Cushion layer, 54 ... Adhesive layer, 76 ... Nut, 80 ... Anchor, 81 ... Bolt, 82 ... Plate.

Claims (9)

On the tray consisting of the bottom and the wall portion erected from the edge of the bottom, the shirasu filled in the tray so as to be in contact with the front surface of the bottom and the inner surface of the wall, and the back surface of the bottom. In a wall panel provided and composed of a connecting member for connecting the tray to the vehicle wall.
A wall panel characterized in that a return portion for preventing the shirasu from separating from the bottom portion is provided on the inner surface of the wall portion. On the tray consisting of the bottom and the wall portion erected from the edge of the bottom, the shirasu filled in the tray so as to be in contact with the front surface of the bottom and the inner surface of the wall, and the back surface of the bottom. In a wall panel provided and composed of a connecting member for connecting the tray to the vehicle wall.
A wall panel characterized in that an anchor is erected on the front surface of the bottom portion to prevent the shirasu from separating from the bottom portion. On the tray consisting of the bottom and the wall portion erected from the edge of the bottom, the shirasu filled in the tray so as to be in contact with the front surface of the bottom and the inner surface of the wall, and the back surface of the bottom. In a wall panel provided and composed of a connecting member for connecting the tray to the vehicle wall.
On the back surface of the bottom portion, an island portion is provided in the center, a groove portion is provided so as to surround the island portion, an outer edge portion is provided so as to surround the groove portion, and the groove portion is crossed from the outer edge portion to the island portion. Has a bridge part to
The connecting member includes a magnet sheet in which ferrite powder is hardened with a binder and magnetized, a cushion layer fixed to one surface of the magnet sheet, and a surface far from the magnet sheet. It consists of an adhesive layer provided on the cushion layer.
A wall panel characterized in that the connecting member is provided in the groove portion divided by the bridge portion so that the adhesive layer hits the bottom of the groove portion. The wall panel according to claim 3.
The connecting member is a wall panel characterized in that a part thereof protrudes from the island portion, the bridge portion, and the outer edge portion. On the tray consisting of the bottom and the wall portion erected from the edge of the bottom, the shirasu filled in the tray so as to be in contact with the front surface of the bottom and the inner surface of the wall, and the back surface of the bottom. In a wall panel provided and composed of a connecting member for connecting the tray to the vehicle wall.
On the back surface of the bottom portion, an island portion is provided in the center, a groove portion is provided so as to surround the island portion, an outer edge portion is provided so as to surround the groove portion, and the groove portion is crossed from the outer edge portion to the island portion. Has a bridge part to
The connecting member is composed of an aluminum foil, a first thermoplastic resin layer provided on one surface of the aluminum foil, and a second thermoplastic resin layer provided on the other surface.
The wall panel is characterized in that the aluminum foil is attached to the island portion via the first thermoplastic resin layer. The wall panel according to claim 5.
A wall panel characterized in that a message explaining where the aluminum foil is attached to the bottom portion is displayed on the outer surface of the wall portion. The wall panel according to any one of claims 1 to 6.
This wall panel is a wall panel characterized in that the cross section has a substantially trapezoidal shape with a narrow body side. The wall panel according to any one of claims 1 to 7.
This tray is a wall panel characterized by being made of resin. The wall panel according to any one of claims 1 to 7.
This tray is a wall panel characterized by being made of wood or wood.

Images