JP2010236262A - Anchoring assist implement for building board, and building board construction structure using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an anchoring assist implement which can reduce the risk that the building board may fall onto ground, even on the occurrence of separation between the building board and lathing, in the construction of the building board by a wet construction method; and to provide a building board construction structure using the anchoring assist implement. <P>SOLUTION: The anchoring assist implement for use includes an upper locking piece which serves as a portion for being fixed to the lathing, a lower locking piece which serves as a portion for being fixed to a locking groove of the building board, and a connecting wire for connecting the upper and lower locking pieces together. The building board, in which the locking groove is formed on its backside, is used; the plurality of building boards are arranged in such a manner as to horizontally and vertically form thin joints with a width of 1-2 mm; the lower locking piece of the anchoring assist implement is fitted into the locking groove of the building board; the building board, which has the lower locking piece fitted into the locking groove, is fixed to the lathing with an adhesive; the upper locking piece of the anchoring assist implement is sandwiched between adhesion layers which are formed between the lathing and the building board except the building board having the lower locking piece fitted into the locking groove; and the building board is fixed to the lathing with the adhesive. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

The present invention relates to a fastening aid for fastening a building board to a wall of a building, and a building board construction structure using the fastening aid.

Conventionally, as a method of fastening building boards such as natural stone plates and ceramic boards to the wall of the building, etc., so-called wet construction methods that are fixedly attached to the housing side with embedded mortar or adhesive, etc., and screw fastening or metal fittings are used A so-called dry construction method is known. In the wet method, the fastening is stable, but the curing time of the mortar and the adhesive is long, and the construction days are often long. On the other hand, the dry method is advantageous in that the construction is relatively simple and the construction period is short, but in the case of screwing, it is necessary to blind the head of the screw. Moreover, when using a fastener, in order to fasten it in the state which put the building board on the receiving part, the operation | work of two processes of the process of putting a building board and the process of fastening a fastener is required.

In recent years, the types of building boards have been diversified. For example, a building board 60 having a relatively small size and a large thickness as shown in FIG. It is getting out. As a method for producing such a building board, an extrusion molding method, a casting method into a mold, or the like is used. In particular, according to a casting molding method into a mold, a deeply carved surface uneven pattern can be formed. It is possible to produce a building board with extremely high formability.

Such a building board is required to have high decorativeness and appearance design, and a thick building board is often used as a decoration board material in order to give a profound feeling. For example, in Patent Document 4, a front view is shown in FIG. 12 (a), a rear view is shown in FIG. 12 (b), and a cross-sectional view is shown in FIG. A building board 60 having a high formability that expresses a masonry feeling of natural stone is described. The building board 60 has a locking groove 61 for locking a locking piece of a fastening metal member on the side, and a recessed portion 62 is formed on the back side to reduce the weight.

The present applicant is a ceramic construction board formed using a mold, and is a new construction that eliminates the above-mentioned inconveniences of construction plate construction methods and construction structures using conventional fasteners. For the purpose of obtaining a method and construction structure, it is a construction method using a fastening metal fitting, and the purpose is to obtain a construction method and construction structure for a construction board having high fastening strength and high earthquake resistance. The proposal of the dry method was announced as follows.

In the patent document 1, the present applicant uses a building plate having a locking groove formed on the back surface and a hanging tool having a hook portion that engages with the locking groove, and fixes the hanging tool to the building side. The construction method which fastens the building board material to the building in the suspended state by performing the process of making it, the process of engaging the hook part of a hanging tool with the latching groove | channel of the board material for construction is proposed.

Further, in Patent Document 2, a part of the fastening metal fitting is integrally fixed to the building board in a state in which the part extends outward from the periphery of the handle portion of the building board, and the extended part is formed at an opposing position. A construction structure is proposed in which at least one set of a lower solid part and an upper solid part are fixed to a building wall by fastening the lower solid part to a building wall surface.

Furthermore, in Patent Document 3, a part of the fastening metal fitting is integrally fixed to the building board in a state in which the part extends outward from the periphery of the handle portion of the building board, and the extended part is formed at an opposing position. The construction method and the construction structure are characterized in that at least one set of a solid part and an upper solid part are fixed, and the building board is fixed by fastening the lower solid part to a building wall surface.
In the building board of the present invention, the building board main body and the fastening bracket are already integrated in the manufacturing process, and at the construction site of fastening, after placing the building board in a predetermined fastening position, The fastening operation is completed only by fastening the lower solid part of the fastening bracket fixed to the base material of the building with a screw or the like. Therefore, unlike the prior art, there is no need to insert the fastener into the notch groove of the building board, and the workability of fastening is greatly improved.

Moreover, in patent document 4, although it is a thin thing as a whole, even if it is a heavy outer wall board in which a locking groove is formed in a side edge, it can be stably fastened to a building wall surface. By using a high-strength fastening bracket and its fastening bracket, the outer wall plate can be clamped in a stable state in the opening and eaves, in addition to the protruding corners, corners, and general parts. The outer wall construction structure is proposed.

On the other hand, the present applicant is a comparatively small piece of building board having no recessed portion, and as a construction structure of a decorative member that is fastened to a wall surface for the purpose of decorativeness, an invention that uses a fastener and an adhesive together Announced an invention that uses only fasteners and no adhesive.

As an invention that uses both a fastening bracket and an adhesive, in Patent Document 5, as a construction structure of a decorative member on the outer wall portion of a building, the fastening bracket is fixed to a site that requires decoration on the outer wall portion of the building, By simply hanging and fixing the decorative member to the fixed fastening metal fitting, it is possible to easily embody the decoration required on the outer wall portion of the building, and between the outer wall portion and the decorative member for the hanging fixing. An invention has been proposed in which the decorative member is more firmly fixed to the outer wall portion by interposing an adhesive.
According to the invention of Patent Document 5, a fastening bracket is fixed to a part that requires decoration of a building outer wall portion, and a decoration member is simply suspended and fixed to the fixed fastening bracket, which is necessary for the building outer wall portion. The decoration member can be easily implemented, and the decoration member can be more firmly fixed to the outer wall portion by interposing an adhesive between the outer wall portion and the decoration member in the suspension fixing.

Furthermore, the present applicant discloses the invention of Patent Document 6 as an invention in which an adhesive is not used only with a fastener.
According to the construction structure of the decorative member on the outer wall of the building of Patent Document 6, the rear surface is provided with a hanging groove composed of two engaging grooves inclined in the direction in which the back sides approach each other as the decorative member , And a fastener provided with two locking claws that engage with the hanging groove of the decorative member, and the fastener is fixed to the outer wall of the building and is fixed The decorative member is suspended and fixed to the outer wall of the building in a state where the two engaging grooves of the hanging groove are engaged with the two engaging claws of the fastening metal fitting. .
The two engaging grooves that form the hanging groove run in parallel with a certain interval, and the back sides are inclined in a direction approaching each other. The claw is in an engaged state as if the two engaging grooves were gripped from above and below. As a result, the decorative member is firmly fixed to the building wall surface in a suspended state, and a desired stable fixed state can be obtained without depending on the adhesive force of the adhesive. Thereby, the application | coating operation | work of an adhesive agent can be skipped. Of course, depending on the situation, a fixing force by an adhesive may be used in combination.
According to the invention of Patent Document 6, even if it is a thick and heavy decorative member, it is securely fastened to the outer wall of the building or the periphery of the building opening without depending on the adhesive. It can be fixed.

Even with the proposals disclosed in the above Patent Documents 1 to 6, in the construction structure of the building board by the dry method using these fastening brackets, the fastening position of the brackets must be determined with high accuracy. In order to improve workability, it is expected to develop a flexible construction structure and construction method that is easy to construct, such as a wet construction method.
On the other hand, the wet method also has problems to be improved. Wet construction methods do not require fasteners like the dry construction method, but have traditionally had the problem of building boards falling due to aging after construction, and so far various proposals have been made as measures to prevent falls. However, there is no established method to prevent the falling of the building board while achieving both economic efficiency and safety, and the construction structure and construction method of the building board that does not drop the building board even though it is a wet method. Is desired.

In the case of tiles, which are representative of wet construction building boards, tile walls constructed with adhesives such as mortar have the problem of peeling of the tiles, and when used for exteriors, falling tiles can cause serious accidents. is there. Therefore, conventionally, various measures for preventing the peeling of the tile have been proposed. Typical methods used to prevent tile peeling accidents include improving the tile back, new development of adhesives, and improving the foundation accuracy of the frame walls. In addition, measures from the aspect of the construction method have been tried, and an improved crimping method and an improved stacking method have been proposed. However, none of the methods has been able to completely prevent tile peeling.

Considering the tile peeling on the tile wall constructed by mortar tension, the tile peeling often occurs due to cracks generated in the base mortar layer or the mortar layer. In particular, when the outer wall surface of a multi-story building is covered with tiles, the cause of cracking is considered as follows.
One factor is that the outer wall surface is exposed to solar radiation and the temperature rises, resulting in out-of-plane tensile stress and in-plane shear stress based on the difference in coefficient of linear expansion among the tile, adhesive layer, ground mortar layer, and building frame. It is considered that the occurrence of the cracks and the repeated generation of torsional stress at both end spans of the uppermost floor and the lowermost floor are important causes of peeling of the exterior tile. In addition, cracks are also likely to occur around the opening of the building frame. In particular, cracks at the corners of the building frame have a significant effect on tile peeling.

As described above, since there are many factors that induce the peeling of the tile, it is extremely important to provide the tile wall surface with an adhesive strength that can sufficiently counter these, in order to prevent the peeling of the tile.
However, even if the adhesive strength of the tile is sufficiently improved, it is difficult to eliminate the aging of the adhesive. Furthermore, since members of different materials are bonded with an adhesive, it is difficult to permanently guarantee the bonding force at the interface between the adhesive and the member to be bonded. In addition, external forces and vibrations are constantly applied to buildings due to earthquakes, wind pressures, vibrations from roads, and shaking due to living activities. This vibration is also a major factor in tile separation.

Patent Document 7 discloses a tile fall prevention method that is one of building boards.
The invention of Patent Document 7 is intended to provide a tile wall surface excellent in an anti-peeling effect, and the feature thereof is that an anchor bolt is embedded in the construction wall surface, and an opening or a position corresponding to the anchor bolt is provided. A tile having a notch formed thereon is pasted, and the tip of the anchor bolt is positioned so as not to protrude from the surface of the tile so as to be positioned inside the opening or notch of the tile.
The tile wall constructed on the basis of the invention of Patent Document 7 does not cause the base layer or the adhesive layer to peel off from the construction wall by the action of the anchor bolt and the wire rod such as piano wire stretched as necessary. Therefore, there is no risk of peeling off tiles due to secular changes or earthquakes.

Patent Document 8 discloses a tile panel for an outer heat insulating material that can be easily fixed to the outer heat insulating material and a method for attaching the tile panel, with respect to the tile for the outer heat insulating material that is one of the building boards.
1st invention of patent document 8 is a tile panel for external heat insulating materials affixed on the external heat insulating material provided in the housing outer wall part of a building through mortar or an adhesive agent, Comprising: A joint groove is provided in the decorative surface of a tile panel. Forming and providing a hole penetrating the back surface of the tile panel on the bottom surface of the joint groove, and fixing to the outer heat insulating material by a fixing member inserted through the hole portion and screwed into the outer heat insulating material. Provided is a tile panel for outer heat insulating material.
The invention of Patent Document 8 can obtain at least one of the following effects by means for solving the above problems.
(1) Since it fixes to an external heat insulating material with a fixing member, even if the adhesive surface of a heat insulating material and a tile panel peels, a tile panel does not fall out.
(2) Since it fixes to an outer heat insulating material by a fixing member, before a mortar solidifies, it can prevent that a tile panel slip | deviates down by drooping.
(3) Since the fixing member is attached to the joint groove, the fixing member is hidden by filling the joint and the aesthetic appearance is not impaired.
(4) The fixing member is a screw and can be easily screwed into the heat insulating material.

Patent Document 9 discloses a relationship between a tile, which is one of building boards, and a groundwork.
The mortar layer is applied by applying mortar on the concrete projectile, and the tile is peeled off, or the accident where the tiles are peeled off is mainly due to peeling at the interface between the top mortar layer and the concrete. The main cause is considered to be a decrease in the interfacial adhesive force due to the remaining of the release agent used to give the mold form and concrete mold releasability when casting concrete.
The inventor of Patent Document 9 is directed to such a problem by placing concrete with a mold having an uneven shape on the placement surface, forming a base concrete having an uneven portion on the surface, and a mortar, By providing a polymer cement or synthetic resin-based adhesive layer, the overcoat layer that has entered the recesses on the surface of the foundation skeleton concrete exhibits an anchor effect, and further due to curing shrinkage of the topcoat layer on the projections on the surface of the foundation skeleton concrete, It has been found that by applying a strong fastening effect, it is possible to strongly bond the base concrete with a balance between shear and tensile strength and the topcoat layer, and to prevent the topcoat layer from peeling off from the base concrete.
By using the construction method of Patent Document 9, the bond strength between the foundation concrete and the topcoat layer is strengthened, and as a result, the risk of the topcoat layer and tiles peeling off can be greatly reduced.

Further, Patent Document 10 discloses an invention for improving an adhesive.
The tile-integrated outer wall material is obtained by applying an adhesive mixed with at least chloroprene latex and an inorganic filler to the outer wall base material, contacting the tile on the outer wall base material, and press-bonding the adhesive onto the outer wall base material. The outer wall base material is not limited, and examples include, but are not limited to, ceramic boards other than ceramics such as slate, cement siding boards, asbestos siding boards, and synthetic resin boards. Particularly preferable is an outer wall base material made of a ceramic material because of its high adhesive performance with the adhesive of the present invention.
In the invention of Patent Document 10, the method of applying the adhesive to the outer wall material is arbitrary, and there is no problem using a widely used method. For example, a roll coater method, a knife coater method, a curtain flow coater method, and the like, and an air spray method adjusted to a viscosity that can be sprayed can be used, but are not limited thereto.

JP 2000-045485 A JP 2001-0665155 A JP 2001-152642 A JP 2006-307419 A JP 2003-278354 A JP 2006-207298 A JP H07-317273 A JP 2009-019390 A JP H05-118133 A JP H06-228517 A

In the dry method, the problem of aging due to adhesion, which is a drawback of the wet method, is solved. However, when fastening small ceramic building boards, the size of one building board is relatively small, so if you want to cover the entire wall of the building, the number of building boards used is inevitable. To be more. And, in the installation work, the work of two steps of the work of fastening the fastening hardware to each building board and the work of fastening the fastening hardware to the base material of the building are required, Although the building board itself is small, it is thick to bring out the texture, and it is quite heavy in weight, so the work efficiency of fastening is not high. .
Furthermore, in the case of the dry method without the work of fastening the fasteners to the base material of the building, the construction board and the building board are structured to be secured with a certain gap between the building board and the building board. Grooves formed between the two will be in the eyes, resulting in a sense of incongruity and high designability.

  In this way, the dry method can prevent the fall of the building board due to the secular change of the adhesive layer and the bonding interface, as in the wet method, but in the construction of a small building board, there are openings such as windows. The position of the bracket receiving material must be assigned with high accuracy. In particular, when small building boards such as tiles are attached one by one to the base with high accuracy using fasteners, work skill and accuracy are required, and workability is inferior. Furthermore, a space for mounting the mounting bracket between the building board and the building board is required.

On the other hand, various proposals have been made for the wet method, but the problem of falling of the building board due to the secular change of the adhesive layer and the adhesive interface has not been solved.
In invention of patent document 7 which proposes fall prevention, since the trace of construction for prevention of fall remains on the surface of a building board after construction, further improvement is desired in construction of a building board which requires aesthetics.
In invention of patent document 8, since a fixing member is mounted | worn with a hole, it is further desired not to impair the natural feeling of a building board surface.
In invention of patent document 9, the base | substrate which sticks a building board must be processed into an unevenness | corrugation, the kind of base | substrate is limited and construction is also complicated.
In the invention of Patent Document 10, it is possible to improve the adhesive performance of the adhesive, but it is difficult to completely overcome the fall prevention of the building board due to secular change in this invention as well.

The present invention is the safety of the dry-type fitting method that does not cause a drop due to deterioration of the adhesive, and the good wet-type method that is excellent in workability without being constrained by the accuracy of the fitting position of the fitting as in the dry-type fitting method. This invention is proposed.
Although the present invention is a method of fastening a building board with an adhesive method, even when peeling occurs between the building board and the wall base due to aging, etc., by using the fastening aid of the present invention It is possible to avoid the worst situation that the building board peeled from the wall base falls to the ground.

  In the present invention, as the building board, any ceramic building board having a substantially rectangular shape that has been conventionally used as a building wall material can be used, but the thickness has been increased to provide a profound feeling. It is particularly effective to use a ceramic building board as a building board. The surface handle portion is also optional and is not limited. However, a stone-like pattern is suitable because it will naturally pile up stones. Furthermore, when the building board is installed in a masonry-like construction state in which stones are piled up naturally, the gap between the building board and the building board is small, between the upper, lower, left and right side edges of the building board. A state in which a thread joint is formed is suitable as a construction state.

  A fastening aid according to the present invention is a fastening aid for fastening a building board, in which a locking groove is formed on the back surface, to a wall base, and the fastening aid is used for locking the back surface of the building board. A lower locking piece fitted into the groove, an upper locking piece engaged with the wall base, and a connecting line connecting the lower locking piece and the upper locking piece, preferably the lower locking piece A cut and raised piece is formed on the upper locking piece, and a hole is formed in the upper locking piece.

In the above fastening aids, the material of the connecting line connecting the lower locking piece and the upper locking piece is the case where the building board in which the lower locking piece is inserted into the locking groove is peeled off from the wall base for some reason. Stainless steel (SUS304) with strength that will not be cut is suitable, but it should be made of a material that has strength that will not be cut when the building board with the lower locking piece inserted is dropped and is less likely to cause deterioration such as rust. For example, the connecting wire may be made of a material other than stainless steel.
Furthermore, the joining method of the connecting line and the lower locking piece and the connecting line and the upper locking piece is also a joining method having a strength that is not cut when the building board in which the lower locking piece is fitted in the locking groove falls. Any joining method may be used as long as it is caulked, but it is preferable that the joining is thin and the joining strength is sufficient. In addition, the wire diameter of a connection line should just be a thing thinner than the thickness of the contact bonding layer between a building board and a wall foundation | substrate, when it is not cut | disconnected when a building board peels, and the wire diameter of 0.3-1.2 mm Is preferred.

Further, a cut-and-raised piece is formed on the lower locking piece in order to strengthen the effect of the lower locking piece being fitted into the locking groove.
The cut-and-raised piece of the lower locking piece has a cut-and-raised piece substrate portion, a lower cut-and-raised piece that rises by bending from the cut-and-raised piece substrate portion, and left and right cut-and-raised pieces.
The size of the lower locking piece is such that the diameter of a virtual circumscribed circle in contact with the outer periphery of the cut and raised piece substrate portion is smaller than the diameter of a virtual inscribed circle in contact with the inner wall of the locking groove, and the lower cut and raised piece And a diameter of a circumscribed circle in contact with an imaginary line connecting the outer periphery of the left and right cut and raised pieces is larger than a diameter of a virtual inscribed circle in contact with the inner wall of the locking groove.
That is, the rising angle of the cut-and-raised piece configured between the cut-and-raised piece substrate portion and the lower cut-and-raised piece is 91 degrees or more, and similarly, it is configured between the cut-and-raised piece substrate portion and the left and right cut-and-raised pieces. The rising angle of the cut and raised piece is 91 degrees or more, and the cut and raised piece is lower than the diameter of the virtual circumscribed circle in contact with the outer periphery of the piece substrate part, and the end of the lower and right raised and cut pieces The diameter of the circumscribed circle in contact with the imaginary line connecting the outer periphery with the taper shape is larger. Since the lower locking piece is cut and raised and inserted into the locking groove from the side of the piece substrate, the lower locking piece can be easily inserted into the locking groove, but the lower locking piece is inserted into the locking groove. It is not easy to drop off.
Further, the shape of the locking groove is preferably a circle when viewed from the back side of the building board so that the cut and raised piece can be easily inserted by a human hand. Even if it is an angle, it can be easily cut and raised by human power to fit the piece into the locking groove.

The height of the cut-and-raised piece is such that it does not cause a problem that causes unevenness when the building board is stretched, that is, the depth of the locking groove and the adhesive layer formed between the building board and the wall base. A height lower than the sum of the thicknesses is preferred. In order to improve the workability when raising the building board, it is preferable that the height of the cut and raised piece is equal to or lower than the depth of the locking groove.

  By setting the lower locking piece to the above-described configuration, a more stable fastening mode without rattling can be obtained between the building board to be fastened and the lower locking piece. In particular, in the case of a lower locking piece in which the cut-and-raised piece is tapered, when the lower locking piece is inserted into the locking groove, it can be easily inserted, and the adhesive layer of the building board should be peeled off. Even if the building board is peeled off from the wall base, the cut and raised piece of the lower locking piece bites into the locking groove, making it difficult for the lower locking piece to fall out of the locking groove. Is obtained.

  In a preferred embodiment, after the cut and raised pieces are fitted into the locking grooves, it is desirable that the cut and raised pieces fitted into the locking grooves are filled and fixed with an adhesive such as an epoxy resin. In this case, the lower locking piece is more difficult to drop off from the locking groove, and a more stable fastening is obtained.

The upper locking piece is embedded in an adhesive layer between a building board other than the building board in which the lower locking piece is fitted in the locking groove and the wall base. Furthermore, a hole is formed in the upper locking piece in order to further strengthen the bonding effect between the building board arranged to cover the upper locking piece, the adhesive for fixing the wall base and the upper locking piece. Yes. The adhesive that has entered the hole has a wedge effect, and the fixing between the upper locking piece and the adhesive layer is strengthened. Furthermore, when the wall base is a wall base with a screw retaining force such as plywood, if the upper locking piece is fixed to the wall base with a flat head screw or the like using this hole, the upper locking piece can be attached to the wall base. Become strong.
Since the upper locking piece is embedded in the adhesive layer between the building board and the wall base, if the thickness of the upper locking piece is too thick, unevenness occurs when the building board is stretched. Therefore, the plate thickness of the upper locking piece is thinner than the thickness of the adhesive layer between the building board and the wall base, and the thickness that maximizes the wedge effect between the adhesive layer and the hole of the upper locking piece is suitable. Preferably, the plate thickness of the upper locking piece is 0.3 to 1.2 mm.

  The present invention uses, as a construction structure of the above-mentioned fastening aid and a construction board using the above-mentioned fastening aid, a construction board in which a locking groove is formed on the back surface. 1 to 2 mm of thread joint is formed, and the lower locking piece of the auxiliary assisting tool is inserted into the locking groove of the building board, and the building board is fixed to the wall base via the adhesive layer. A building board in which, for example, a building board arranged above the building board so as to cover the upper locking piece of the fastening aid used in the building board is fixed to the wall base via an adhesive layer A construction structure for a building board is disclosed, wherein the construction board is constructed by repeatedly repeating the work of bonding the building board to a wall base.

  In the construction structure of this building board, even if it is a heavy building board, it can be firmly fastened to the wall base by using the fastening aid with the above-mentioned structure, and it becomes a stable building board construction structure. Even if the building board is peeled off from the wall base after construction, the risk of the building board falling from the wall base can be reduced by the effect of this fastening aid.

According to the construction structure of the building board using the fastening aid according to the present invention, by adopting the bonding method using the fastening aid together, the deterioration situation of each member configured on the back surface of the building board. Even if the building board is thick and has a heavy feeling without being involved, even if the building board peels from the wall base, the building board does not fall to the ground due to the action of the fastening aids.
Even if you encounter secular changes, earthquakes, etc., even if there is a variation in the construction of the adhesive, the building board will not fall to the ground. Preventing threatening events.

The basic block diagram which shows notionally an example of the wall surface constructed | assembled by the construction structure of the building board of this invention. The front view which shows an example of the fastening assistance tool by this invention. It is a figure which shows an example of the lower latching piece of the fastening assistance tool by this invention, Fig.3 (a) is a front view, FIG.3 (b) is a bottom view, FIG.3 (c) is a side view. The figure seen from the back side explaining an example of the construction structure of the construction board by this invention. The figure seen from the back side of a building board explaining an example of the fitting state of the fastening aid by this invention and a building board. The partial perspective view seen from the plane side of a building board explaining an example of the fitting state of the fastening aid by this invention and a building board. The partial enlarged view seen from the back side of the building board explaining an example of the fitting state of the lower locking piece and locking groove by this invention. It is an example of the construction method of the construction board by this invention, Comprising: The conceptual diagram which sticks a construction board. It is an example of the construction method of the construction board by this invention, Comprising: The conceptual diagram which applies an adhesive agent on the back surface of a construction board. The conceptual diagram of the lower latching piece inserted in the latching groove explaining an example of the fitting state of the fastening aid by this invention, and a building board The figure explaining one form of a building board. The front view (a) and back view (b) which show an example of the building board in which a locking groove is formed in a side edge. Sectional drawing by the bb line | wire of Fig.12 (a). The front view (a) and back view (b) which show an example of the building board of this invention.

Hereinafter, the construction structure of the fastening aid 1 according to the present invention and the building board 7 using the same will be described with reference to the drawings.
FIG. 1 is a basic configuration diagram conceptually showing an example of a wall surface constructed by the construction structure of a building board of the present invention. FIG. 2 is a front view showing an example of a fastening aid according to the present invention. FIG. 3 is a view showing an example of a lower locking piece of the fastening aid according to the present invention, FIG. 3a is a front view, FIG. 3b is a bottom view, and FIG. 3c is a side view. FIG. 4 is a view seen from the back side for explaining an example of the construction structure of the building board according to the present invention. FIG. 5 is a diagram illustrating an example of a fitting state between the fastening aid and the building board according to the present invention, as viewed from the back side of the building board. FIG. 6 is a partial perspective view illustrating an example of a fitting state of the fastening aid according to the present invention and the building board as seen from the plane side of the building board. FIG. 7 is a partially enlarged view seen from the back side of the building board, illustrating an example of a fitting state of the lower locking piece and the locking groove according to the present invention. FIG. 8 is an example of a construction board construction method according to the present invention, and is a conceptual diagram for pasting a construction board. FIG. 9 is an example of a construction board construction method according to the present invention, and is a conceptual diagram in which adhesive A is applied to the back surface of the construction board. FIG. 10 is a conceptual diagram of the lower locking piece fitted into the locking groove, explaining an example of the fitting state of the fastening aid according to the present invention and the building board. FIG. 14: is the front view (a) and back view (b) which show an example of the building board of this invention.

As shown in FIG. 2, the fastening aid 1 includes an upper locking piece 2 that is a fixed portion to the wall base 9, a lower locking piece 3 that is fitted in the locking groove 8 of the building board 7, and an upper It consists of a connecting line 4 that connects the locking piece 2 and the lower locking piece 3. The upper locking piece 2 and the connecting line 4 are joined at the upper joint 10, and the lower locking piece 3 and the connecting line 4 are joined at the lower joint 11.
The joining method of the connecting wire 4 and the lower locking piece 3, and the connecting wire 4 and the upper locking piece 2 is any joining method as long as it has a strength that is not cut when the lower building board 7 is dropped. Although a method may be used, caulking is preferable because the thickness of the joining portion is thin and the joining strength is sufficient.
In the above fastening aid 1, the material of the connecting line 4 that connects the lower locking piece 3 and the upper locking piece 2 is such that the building board 7 in which the lower locking piece 3 is inserted peels from the wall base 9 for some reason. Stainless steel (SUS304) with strength that will not be cut even if it is used is suitable, but it has strength that does not cut when the building board 7 in which the lower locking piece 3 is inserted falls, and deteriorates such as rust. The connecting wire 4 may be made of a material other than stainless steel as long as it is not easily raised.

The connecting wire 4 has a wire diameter of 0.8 mm. The wire diameter of the connecting wire is not cut when the building board 7 is peeled off, and may be a wire diameter smaller than the thickness 49 of the adhesive layer that bonds the building board 7 and the wall base 9, and is 0.3 to 1 Stainless steel with a wire diameter of 2 mm is preferred.

The plate | board thickness of the lower latching piece 3 should just be thickness thinner than the thickness of the contact bonding layer which adhere | attaches the building board 7 and the wall base 9, and the thickness of 0.3-1.2 mm is suitable. Further, the material may be any material as long as it does not cause aging such as rust. In the lower locking piece 3 of the present invention, a stainless steel plate (SUSU 304) having a plate thickness of 0.6 mm is used as a preferred example.

2, 3, and 6, the lower locking piece 3 is formed with a cut-and-raised piece 5 in order to strengthen the effect of the lower locking piece 3 being fitted into the locking groove 8. Has been.
The cut and raised piece 5 is formed with a cut and raised piece substrate portion 5c, a lower cut and raised piece 5a that is bent and rises from the cut and raised piece substrate portion 5c, and left and right cut and raised pieces 5b and 5d.
As shown in FIGS. 3 and 6, the heights 56 a, 56 b, 56 d of the lower cut and raised pieces 5 a and the left and right raised pieces 5 b and 5 d are between the depth 59 of the locking groove 8, the building board 7 and the wall base 9. It is smaller than the dimension 48 obtained by adding the thickness 49 of the adhesive A15 formed in the above.
In order to improve the workability for raising the building board 7, the heights 56a, 56b, 56d of the cut and raised pieces 5a, 5b, 5d are preferably the same as or lower than the depth of the locking groove 8. . As a specific example, when the depth of the locking groove 8 is 5 mm, the height of the cut and raised piece 5 is preferably 3 to 5 mm.

As shown in FIG. 3, as a preferred embodiment, the rising angle 53 of the cut and raised piece formed between the cut and raised piece substrate portion 5c and the lower cut and raised piece 5a is preferably 91 degrees or more, and 91 to 120 degrees. Is preferred. Similarly, the rising angles 54 and 55 of the cut and raised pieces formed between the cut and raised piece substrate portion 5c and the left and right cut and raised pieces 5b and 5d are preferably 91 degrees or more, and preferably 91 to 120 degrees.
With this configuration, the cut-and-raised piece 5 has a tapered shape in which the distance 51 between the left and right cut-and-raised piece ends is larger than the outer dimension 52 of the cut-and-raised piece substrate portion 5c. When inserting, it can insert easily.
Even if the building board 7 is peeled off from the wall base 9, the cut-and-raised piece 5 of the lower locking piece 3 is cut and raised by the distance 51 between the left and right sides of the cut-and-raised piece substrate portion 5c. Is large, the taper is reversely tapered in the drop-off direction, and the lower locking piece 3 is less likely to drop off from the locking groove 8 and stable fastening is obtained.

As a result of this configuration, as shown in FIG. 7, the size of the lower locking piece 3 is such that the diameter of a virtual circumscribed circle in contact with the outer periphery of the cut and raised piece substrate portion 5c is in contact with the inner wall of the locking groove 8. The diameter 58 of the circumscribed circle that is smaller than the diameter 57 of the inscribed circle and is in contact with an imaginary line connecting the outer periphery of the lower cut and raised piece 5a and the ends of the left and right raised and raised pieces 5b and 5d is The shape is larger than the diameter 57 of a virtual inscribed circle in contact with the inner wall.
Therefore, when the lower locking piece 3 is fitted into the locking groove 8, the adhesive layer of the building board 7 is peeled off even though the lower locking piece 3 can be easily fitted into the locking groove 8. Even when the plate 7 peels off from the wall base 9, the cut-and-raised piece 5 of the lower locking piece 3 bites into the locking groove 8, so that the lower locking piece 3 is less likely to drop off from the locking groove 8, Stable fastening is obtained.
The material and thickness of the lower locking piece 3 are preferably determined to be a material and thickness that allow the end of the cut and raised piece 5 to bite into the building board 7.

As a preferred embodiment, as shown in FIG. 10, in the state where the lower locking piece 3 is inserted into the locking groove 8, the adhesive B19 is used so as to fill the cut and raised piece 5 of the inserted lower locking piece 3. Filling the locking groove 8 further makes it difficult for the lower locking piece 3 to fall out of the locking groove 8. In this aspect, in addition to the taper effect of the cut-and-raised piece 5, the lower locking piece 3 is less likely to drop out of the locking groove 8, and a more stable fastening is obtained.
The shape of the locking groove 8 is preferably circular when viewed from the back side of the building board 7 so that the cut and raised piece 5 can be easily inserted by hand. Even if it is an angle, it is possible to easily cut and raise the piece 5 by the human force so as to fit the locking groove 8.

As shown in FIG. 4, the upper locking piece 2 includes a building board 7b and a wall base other than the building board 7a in which the lower locking piece 3 is fitted in the locking groove 8 (disposed upward in the embodiment). 9 embedded in the adhesive layer. Furthermore, a hole 6 is formed in the upper locking piece 2 in order to further strengthen the adhesive effect between the adhesive A15 that fixes the building board 7b and the wall base 9 and the upper locking piece 2. The adhesive A15 entering the hole 6 has a wedge effect, and the fixing between the upper locking piece 2 and the adhesive A15 is strengthened. Further, when the wall base 9 is a wall base having a screw holding force such as a plywood, if the upper locking piece 2 is fixed to the wall base 9 with a flat head screw or the like using this hole 6, the wall of the upper locking piece 2 is further increased. Attachment to the base 9 becomes strong.
In addition, since the upper locking piece 2 is embedded in the adhesive layer between the building board 7b and the wall base 9, if the upper locking piece 2 is too thick, the upper locking piece 2 is not flat when the building board 7b is lifted. generate. The plate thickness of the upper locking piece 2 is thinner than the thickness of the adhesive layer between the building board 7b and the wall base 9, and the thickness that maximizes the wedge effect between the adhesive layer and the hole 6 of the upper locking piece 2 The plate thickness of the upper locking piece 2 is preferably 0.3 to 1.2 mm.
The upper locking piece 2 may be any material as long as it does not cause deterioration over time, such as rust. In the present invention, a stainless steel plate (SUSU 304) having a thickness of 0.6 mm is used as a preferred example. The
The upper locking piece 2 is formed with a hole 6 used for fixing to the wall base 9 with a screw or the like. In this case as well, the hole 6 is omitted, and a screw or a nail or the like is directly locked upward during construction. The piece 2 may be driven and fixed.

An example of the construction structure of the building board 7 made by using the fastening aid 1 will be described below by taking as an example the case where the building board 7 having the form shown in FIG. 14 is used as the building board.
FIG. 1 shows a basic configuration diagram conceptually showing an example of a wall surface constructed by the construction structure of the present invention. FIG. 4 shows a state in which the building board 7 after construction is viewed from the back side. FIG. 5 shows the fitting state of the fastening aid 1 and the building board 7 from the back side of the building board 7. FIG. 7 shows a state in which the fitting state of the locking groove 8 of the building board 7 and the lower locking piece 3 of the fastening aid 1 is partially enlarged from the back side of the building board 7. FIG. 8 shows an example of a method for attaching the building board 7. FIG. 9 shows an example of a method for applying the adhesive 15 to the back side of the building board 7. FIG. 10 shows a state in which the lower locking piece 3 of the fastening aid 1 is fitted in the locking groove 8 of the building board 7.

Although it is not essential in the shape of the building board illustrated as shown in FIGS. 6 and 14, it is desirable that an appropriate uneven shape is formed on the front surface side and the back surface side is a flat surface. Further, a locking groove 8 is formed on the back side of the building board 7. The locking groove 8 is formed so that the lower locking piece 3 of the fastening aid 1 can be inserted, and the depth 59 of the locking groove 8 is the height 56a, 56b of the cut and raised pieces 5a, 5b, 5d. , A dimension larger than the dimension obtained by removing the thickness 49 of the adhesive layer A15 formed between the building board 7 and the wall base 9 from the highest dimension among 56d is desirable, and the workability for raising the building board 7 is improved. In order to do so, the depth 59 of the locking groove 8 is preferably formed to be larger than the highest dimension among the heights 56a, 56b, 56d of the cut and raised pieces 5a, 5b, 5d.

The shape of the locking groove 8 viewed from the back side of the building board is a shape in which the lower locking piece 3 can be inserted, and further, the lower locking piece 3 is not easily dropped after insertion. I just need it. Preferably, as shown in FIG. 7, the shape of the locking groove 8 is preferably circular when viewed from the back side of the building board. If the locking groove 8 is circular, the work can be performed without worrying about the direction when the lower locking piece 3 is fitted into the locking groove 8, which leads to an improvement in workability. Since the operation | work which inserts the lower latching piece 3 in this is stabilized, the lower latching piece 3 is not easily dropped from the latching groove 8. FIG. Further, when the building board 7 is manufactured, the operation of forming the locking groove 8 can be easily performed with a drill or the like, so that productivity is good.

An example of a usage mode when the building board is fastened to the wall base using the fastening aid 1 will be described with reference to FIG. 4 shown from the back side explaining the construction structure of the building board.
First, the lower locking piece 3 of the fastening aid 1 is inserted into the locking groove 8 formed on the back surface of the building board 7a. The building board 7a is bonded to the wall base 9 using an adhesive A15 so that the upper locking piece 2 of the fastening aid 1 is not sandwiched between the building board 7a and the wall base 9.

As the adhesive A15, three types of adhesives of rubber type, synthetic resin type and cement mortar type are suitable, but if the adhesion between the building board, the wall base and the fastening aid is good, other than the above three types Can also be used. In the rubber adhesive, butadiene rubber (BR), styrene butadiene rubber (SBR), nitrile rubber, (NBR), chloroprene rubber (CR), urethane rubber or the like is used as an adhesive component. In the synthetic resin adhesive, vinyl acetate, acrylate ester, vinyl chloride or epoxy resin is used as an adhesive component. In the cement mortar system, cement or cement and synthetic resin emulsion or latex are used as the adhesive component. Examples of synthetic resins include vinyl acetate, acrylic ester, vinyl chloride-vinylidene chloride copolymer, and epoxy resin. Examples of latex include natural rubber (NR), SBR, and carboxyl-nitrile rubber (C-NBR). , CR, and high styrene latex (SB). The synthetic resin emulsion or latex can be used alone or in combination of two or more.

The upper locking piece 2 is arranged above the bonded building board 7a, and the upper locking piece 2 is placed between the building board 7b and the wall substrate 9 arranged above the bonded building board 7a. The building board 7b, the wall base 9 and the upper locking piece 2 are bonded using the adhesive A15.
By repeating this work and adhering the building board 7 to the wall base 9, the fastening work of the building board 7 from the lower level to the uppermost stage of the wall base is advanced.

As a more preferred embodiment, it is desirable that the cut and raised piece 5 of the lower locking piece 3 is fitted in the locking groove 8 and then the cut and raised piece 5 fitted in the locking groove 8 is filled with the adhesive B19.
Suitable examples of the adhesive B19 include an epoxy resin adhesive, an adhesive made of a silicon compound capable of reacting with an epoxy resin, and a moisture curing containing a silane coupling agent in a saturated hydrocarbon polymer having a hydrolyzable silicon group. Type adhesives are listed, and other adhesives may be selected as long as they are excellent in adhesiveness, water resistance, weather resistance, and durability between the lower locking piece 3 and the building board 7. In the case of this aspect, the lower locking piece 3 is less likely to drop off from the locking groove 8, and further stable fastening is obtained.

The upper locking piece 2 is embedded in an adhesive layer between the upper building board 7 b and the wall base 9. A hole 6 is formed in the upper locking piece 2 in order to further strengthen the adhesive effect between the adhesive 15 </ b> A for fixing the building board 7 b and the wall base 9 and the upper locking piece 2. The adhesive 15A entering the hole 6 has a wedge effect, and the fixing between the upper locking piece 2 and the adhesive layer is strengthened. Further, when the wall base 9 is a wall base 9 having a screw holding force such as a plywood, if the upper locking piece 2 is fixed to the wall base 9 with a flat head screw or the like using this hole 6, the upper locking piece 2 The attachment to the wall substrate 9 becomes strong.
In addition, since the upper locking piece 2 is embedded in the adhesive layer between the building board 7b and the wall base 9, if the upper locking piece 2 is too thick, the upper locking piece 2 is not flat when the building board 7b is lifted. generate. The plate thickness of the upper locking piece 2 is thinner than the thickness of the adhesive layer between the building board 7b and the wall base 9, and the thickness that maximizes the wedge effect between the adhesive layer and the hole 6 of the upper locking piece 2 The plate thickness of the upper locking piece 2 is preferably 0.3 to 1.2 mm.

As the construction structure of the building board 7 using the fastening aid 1 described above, the present invention uses the building board 7 in which a locking groove 8 is formed on the back surface. In the construction structure of the building board 7 in which the building board 7 is arranged to form a thread joint 14 of ˜2 mm, and the building board 7 is fixed to the wall base 9 through an adhesive layer,
The fastening aid 1 used in the building board 7a in which the lower locking piece 3 of the fastening aid 1 is fitted in the locking groove 8 of the building board 7a and the lower locking piece is fitted in the locking groove. Building board 7b other than the building board in which the lower locking piece is fitted in the locking groove so as to cover the upper locking piece 2 is fastened to the wall base 9 with an adhesive A15. The construction structure is disclosed. The upper locking piece 2 may be fixed to the wall base 9 using a fastener such as a screw.

  In this building board construction structure, by using the fastening aid 1 having the above-described structure, even when the building board 7 is heavy, the building board can be securely fastened to the wall base 9. Even if the building board 7 is peeled off from the wall base 9 after construction, it is possible to reduce the risk of the building board falling to the ground due to the effect of the fastening aid 1.

DESCRIPTION OF SYMBOLS 1 ... Fastening auxiliary tool, 2 ... Upper locking piece, 3 ... Lower locking piece, 4 ... Connection line, 5 ... Cut and raised piece, 5a ... Lower cut and raised piece, 5b, 5d ... Left and right cut and raised piece, 5c ... Cut and raised piece substrate part, 6 ... hole, 7 ... architecture board, 7a ... lower construction board, 7b ... upper construction board, 8 ... locking groove, 9 ... wall substrate, 10 ... upper joint, 11 ... lower joint Part, 12 ... steady rest, 13 ... runner, 14 ... thread joint, 15 ... adhesive A, 16 ... worker, 17 ... back side, 18 ... front side, 19 ... adhesive B, 48 ... adhesion of adhesive A The distance obtained by adding the depth of the locking groove to the thickness of the layer, 49 ... the thickness of the adhesive layer of the adhesive A, 51 ... the distance between the ends of the left and right cut and raised pieces, 52 ... the rising of the left and right cut and raised pieces The distance between the parts, 53 ... the angle between the lower cut and raised piece and the cut and raised substrate part, 54 ... the left and right cut and raised piece 56b and the cut and raised piece substrate part 5c 55 ... An angle between the left and right cut and raised pieces 5d and the cut and raised piece substrate portion 5c, 57 ... A diameter of a virtual inscribed circle in contact with the inner wall of the locking groove 8, 58 ... A lower cut and raised piece 5a and a left and right cut and raised Diameter of circumscribed circle in contact with an imaginary line connecting the outer periphery with the ends of the pieces 5b, 5d, 59 ... Depth of locking groove, 60 ... Architectural plate, 61 ... Locking groove, 62 ... Recessed portion

Claims (8)

A fastening aid for fastening a building board with a locking groove formed on the back surface to the wall base,
An upper locking piece that is a fixing portion to the wall base, a lower locking piece that is a fixing portion to the locking groove of the building board, and a connection that connects the upper locking piece and the lower locking piece A fastening aid characterized by comprising a wire. The fastening aid according to claim 1,
A fastening aid having a hole in a central portion of the upper locking piece. The fastening aid according to claim 1 or 2,
The lower locking piece has a cut and raised piece substrate portion, a lower cut and raised piece bent and raised from the cut and raised piece substrate portion, and a left and right cut and raised piece bent and raised from the cut and raised piece substrate portion,
As the size of the lower locking piece, the diameter of the circumscribed circle in contact with the outer periphery of the cut and raised piece substrate portion is smaller than the diameter of the inscribed circle in contact with the inner wall of the locking groove, and the end of the lower cut and raised piece A fastening aid, characterized in that a diameter of a circumscribed circle connecting an outer periphery of a portion and an end of the left and right cut-and-raised piece is larger than a diameter of an inscribed circle in contact with an inner wall of the locking groove. The fastening aid according to claim 3,
A fastening aid, wherein the height of the lower cut and raised pieces and the left and right cut and raised pieces are lower than the depth of the locking grooves. It is a construction structure of a building board that is fastened to the wall base by an adhesive,
A plurality of building boards with locking grooves formed on the back are arranged,
The lower locking piece of the fastening aid according to any one of claims 1 to 4, is fitted in the locking groove of the building board,
The construction structure of a building board, wherein the upper locking piece of the fastening aid is engaged between an adhesive layer formed between a building board other than the building board and a wall base. The construction structure of the building board according to claim 5, wherein an adhesive is filled in the locking groove into which the lower locking piece is fitted. The construction structure of the building board according to claim 5, wherein the locking groove is circular when viewed from the back surface of the building board. The construction structure of the building board according to claim 5, wherein the upper locking piece is fixed to a wall base with a screw.

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