JP3026740B2 - Plate-shaped building materials with latches - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plate-like building material such as a tile, and more particularly, to a plate-like building material with a latch for preventing the plate-like building material from falling off when the work is stuck to a work surface.

[0002]

2. Description of the Related Art When a plate-like building material such as a tile is stuck to a work surface such as a concrete skeleton, a wet construction method in which the back surface of the plate-like building material is fixed to the work surface via a mortar or the like is widely implemented. At this time, a plate-shaped building material is hung on a work surface with a linear hanger such as a stainless steel wire.

[0003] This is because if the plate-like building material is simply fixed to the work surface with a mortar or the like, there is a risk that the plate-like building material will fall off when the adhesive is peeled off. This is for suspending the plate-like building material with the metal fastener and preventing the plate-like building material from falling off from the work surface.

FIG. 15 shows a structure for preventing falling off by a conventionally used latch. As shown in the figure, in the related art, when fixing a linear latch 202 such as a stainless steel wire to a plate-like building material 200, one end thereof is attached to the back surface of the building material 200 with an organic adhesive 204. Then, the other end is fixed to the work surface 208 such as the concrete frame 206 by a fastener 210 such as a screw. Reference numeral 212 denotes a fixing material such as mortar.

[0005]

However, the linear fastener 202 such as the stainless steel wire is used for the plate-like building material 200.
To fix the organic adhesive 2 just as described above.
04, the reliability is poor, and the metal fitting 202 and the plate-like building material 200 are deteriorated due to aging over a long period of time.
There is a possibility that the adhesive strength between the latch metal 202 and the latch member 202 may be reduced during transport of the plate-like building material 200 or during work such as construction work.
However, there is a problem that the sheet may be peeled off from the plate-like building material 200.

[0006]

The invention of the present application has been made to solve such a problem. Thus, the invention of the present application is such that the inner peripheral surface of the hole is formed on the back surface of the plate-like building material from the opening of the hole.
A circular rod extending straight across the bottom parallel to the axis of the hole;
Form a metal-like material inside the hole
A plurality of windings of the linear material.
Insert the entire cylindrical coiled part formed by turning
To the frictional force based on the elastic force of the coiled portion in the expanding direction.
And a linear body of the latch.
Extend to the outside along the back of the plate-like building material,
The part that protrudes out of the plate-like building material is covered with the latch.
Inserting recess for inserting fasteners such as screws for fastening to the construction surface
A hooked portion having a portion is provided (claim 1).

[0007]

As described above, according to the first aspect of the present invention, a hole is formed in the back surface of a plate-like building material, and a linear end of a latch is inserted into and engaged with the inside of the hole. Thus, according to the present invention, the latch and the plate-like building material can be fixed by the physical engagement force. Thereby, it can prevent effectively that a latch metal separates from a plate-shaped building material.

In the present invention, while the hole of the plate-like building material is a circular hole, the linear end of the latch is bent into a coil shape, and the entire coil-shaped portion is fitted into the hole to form an inner periphery of the hole. This is fixed by the frictional force with the surface, and according to the present invention, it is possible to generate a strong frictional force between the linear end of the latch and the inner peripheral surface of the hole. The advantage that the fixing force of the latch metal to the plate-like building material can be increased is obtained. In the present invention
Can by rotating the entire latching fitting the leading end of the coiled portion in a state in which enter somewhat inside the hole, going progressively inserted into Ananai while diameter of the coiled portion.

[0009] The coil-shaped portion inserted into the hole is pressed against the inner peripheral surface of the hole by its own restoring force, that is, based on the elastic force of the coil-shaped portion, and contacts the inner peripheral surface of the hole. A friction force is generated between them. As described above, according to the present invention, it is possible to easily insert the end of the latch into the hole of the plate-like building material with a small force, and to generate a strong fixing force after the insertion. In addition, by setting the rotation position of the latch to a predetermined position, the entire latch can be housed inside the plate-like building material, and packing and transporting the plate-like building material with the latch is performed in that state. It is possible to pack and
The advantage of good transportability is obtained.

On the other hand, the latch can be projected from the plate-like building material to the outside only by slightly rotating the latch in the mounted state at the time of construction, thereby facilitating the work of fastening the latch. It can be carried out.

In general, providing screw holes in a plate-like building material in advance for screwing and attaching a latch to a hole in the plate-like building material increases the processing cost because screw processing is extremely difficult. However, according to the present invention, even if the plate-like building material is not subjected to screw processing, the latching metal can be easily attached to the plate-like building material by the same screwing operation.

In the present invention, protruding the locking bracket to the outside of and building materials on the back surface parallel direction of the plate-shaped building materials, and butt
Since the hooked portion is provided in the protruding portion, according to the present invention, in sticking and constructing the plate-like building material, the workability of fastening the hook metal to the work surface is good, In addition, the hanging force by the latch can be effectively exerted on the plate-like building material.

[0013] In the present invention, this inner circumferential surface over the bottom of the hole in the building materials back side from the open port is a straight hole extending straightly
Therefore , the hole shape is a simple shape, so that the hole processing can be performed easily and at low cost.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described in detail with reference to the drawings. In FIG. 5, reference numeral 10 denotes a square and one side is 30.
This is a ceramic plate-like building material having a size of 0 mm or more, and has holes 12 formed at two places at a predetermined interval on the upper surface of the back surface. The hole 12 is a closed hole as shown in (C), and is a straight hole whose inner peripheral surface extends straight in a direction parallel to a hole axis that is perpendicular to the back surface of the building material 10. ing.

In FIG. 1, reference numeral 16 denotes a latch which is entirely made of a metal wire such as a stainless steel wire having a spring property. The latch 16 includes a linearly extending main body 18 and a hooked portion 20 formed at an end thereof. Have. Here, the hooked portion 20 is formed by winding a metal wire in a plurality of loops (in this example, two turns) and has an insertion recess 20A of the same shape, and the stopper 32 is inserted therethrough. ing.

The other end of the latch 16 has a coiled portion 22.
Are integrally formed. The coil-shaped portion 22 is formed by tightly winding a metal wire in a coil shape, and has an outer diameter slightly larger than the inner peripheral surface of the hole 12.

FIG. 2 shows a procedure for attaching the latch 16 to the plate-like building material 10. This will be specifically described below. First, as shown in (I), a part of the leading end side of the coil-shaped portion 22 is slightly reduced in diameter and inserted into the hole 12 ((II)), and then as shown in (III). By rotating the entire latch 16 in the direction indicated by the arrow (the direction in which the coil-shaped portion 22 is reduced in diameter), the coil-shaped portion 22 is gradually deformed in the hole 1 while being elastically deformed in the diameter-reducing direction.
2 ((IV)).

At this time, the coil-shaped portion 22 is inserted as if screwed into the hole 12 while gradually reducing the diameter from the distal end side. That is, in the present embodiment, even if the hole 12 is not threaded, the latch 16 can be inserted and fixed in the hole 12 by screwing the latch 16, and the latch 16 can be extremely easily formed. Can be attached to the plate-like building material 10.

The coil-shaped portion 22 inserted into the hole 12 is tightened by the inner peripheral surface of the hole 12 with a constant force. In other words, the outer peripheral surface of the coiled portion 22 is pressed against the inner peripheral surface of the hole 12 by the restoring force based on its own elastic deformation. As a result, a certain amount of frictional force is generated between the coil portion 22 and the inner peripheral surface of the hole 12, and the latch 16 is fixed to the hole 12.

The coil-like portion 22 has a cylindrical shape as a whole. At this time, the coil-like portion 22 is pressed against the inner peripheral surface of the hole 12 over a wide area, and a strong frictional force, that is, a fixing force is generated. . However, in this state, if the entire latch 16 is rotated in the direction of the arrow, the coil-shaped portion 22 inserted into the hole 12 is reduced in diameter, so that the rotation itself of the latch 16 continues to be a relatively weak force. It is possible to do with. As described above, in this embodiment, the latch 16 can be attached to each hole 12 of the plate-like building material 10 by a simple operation.

After the fitting 16 is mounted in this manner, a filler 60 such as a resin is poured into the hole 12 to be solidified and fixed in the hole 12 ((V)). As a result, the latch 16 is firmly fixed to the hole 12, and at the same time, the hole 1
2 can prevent the plate-like building material 10 from cracking due to infiltration of moisture into the interior and freezing of moisture.

The reason why the inside of the hole 12 is filled by filling the inside of the hole 12 with the filler 60 is that when the plate-like building material 10 is stuck to the work surface with a mortar or the like, the mortar is used. And the like cannot sufficiently enter the inside of the hole 12 to leave a space. However, in some cases, the filling of the filler 60 may be omitted. The mounting operation of the latch 16 and the subsequent solidification of the filler 60 may be performed at a production factory for the plate-shaped building material 10 or may be performed at a construction site.

FIG. 3 shows the construction of the plate-like building material 10 with the latch 16. This construction example is an example of a case where the plate-like building material 10 is wet-constructed, and each of the latches 16 is projected outside the plate-like construction material 10 as shown in the drawing, and the plate-like construction material 10 is coated on the back surface. Through the attached mortar 30 and the base mortar 28 applied on the work surface 26, the mortar 30 is sequentially applied to the work surface 26 such as the concrete skeleton 24 from the bottom.

At this time, the loop-shaped hooked portion 20 of the hook metal 16 which has been projected outward in advance is fixed to the work surface 26 with a fastener 32 such as a nail or a screw. The stopper 32 is inserted into a prepared hole provided on the work surface 26,
The pilot hole may be opened in the work surface 26 in advance,
Alternatively, it may be provided when the position of the plate-like building material 10 is determined at the time of sticking construction. In this manner, by fixing the hooked portion 20 of the hook metal fitting 16 to the work surface 26 with the fastener 32, the plate-shaped building material 10 can be hooked even if the adhesive surface by mortar is peeled off. 16, the plate-like building material 10 can be prevented from falling off.

FIG. 4 is an explanatory view of the advantages of the plate-like building material 10 with the above-mentioned latch 16. As shown in the figure, in the case of the plate-shaped building material 10 with the latch 16 of the present example, even after the coil-shaped portion 22 is inserted into the hole 12 as described above, a weak force is applied to the entire latch 16. Can be rotated.

Therefore, as shown by the solid line in FIG.
When the coil-shaped portion 22 is inserted into the plate-shaped building material 10, the entire hook fitting 16 is positioned (stored) inside the plate-shaped building material 10. In this state, the plate-like building material 10 can be packed and transported in exactly the same manner as the plate-like building material having no latch 16 so that the packing and transporting operations are simplified and the transport cost is reduced.

At the time of construction, the latch 16 can be easily rotated and protruded out of the plate-like building material 10 as shown by a dashed line in the figure.

In this embodiment, since the holes 12 of the plate-like building material 10 are simple straight holes, the holes can be easily formed and the processing cost can be reduced.

Further, since the latch 16 protrudes parallel to the back surface of the plate-like building material 10 and to the outside of the building material 10, the work of fastening the latch 16 to the work surface 26 is performed during the sticking operation. Can be easily performed, and the suspending force of the latch 16 can be effectively exerted on the plate-like building material 10.

Further, since the latch 16 is made of a linear material such as stainless steel, it is lightweight and inexpensive. Since the latch 20 is formed at the end thereof, the latch 16 can be fixed to the work surface 26. Attaching work can be easily performed.

FIGS. 6 and 7 show another embodiment of the present invention. In these figures, reference numeral 100 denotes a latch which is made of a metal wire such as a stainless steel wire having a spring property as in the above embodiment, and includes a main body 18 extending linearly and coils formed at respective ends thereof. It has a shape portion 22 and a hooked portion 102.

The coil portion 22 has the same configuration as that of the above embodiment, and the coil portion 22 is inserted and fixed inside the hole 12 of the plate-like building material 10. In this embodiment, the filling material 60 can be filled and fixed in the hole 12 in a state where the coil-shaped portion 22 is inserted into the hole 12.

The hooked portion 102 is formed by winding a linear portion including the end portion 104 substantially one and a half turns into an annular shape, and has an insertion concave portion 102A having a vertically long shape. The stopper 32 is inserted into the recess 102A. Here, the insertion recess 102A is formed to have a width equal to or slightly larger than the outer diameter of the shaft portion of the stopper 32 and a sufficiently large length (vertical direction) with respect to the shaft portion.

Further, as shown in FIGS. 6B and 7, the hooked portion 102 has an end portion 104 having an annular main body portion 108.
Is formed so as to extend from the back surface (the surface on the side of the work surface 26) to the front surface side in an intersecting manner.

As is clear from FIG. 6 (A), the hook 100 extends in a direction parallel to the back surface of the plate-like building material 10 and then the hooked portion 102 protrudes outside the plate-like building material 10. It has become. Note that the latch 100 in this example can also be rotated around the coil-shaped portion 22, so that the entire latch 100 is stored inside the plate-like building material 10 during packing and transportation. It is possible.

In the case of the plate-like building material 10 with the latch 100 according to the present embodiment, when the plate-like building material 10 is stuck to the work surface 26 via the attaching mortar 30 and the base mortar 28 as in the above embodiment, The part can be fastened to the work surface 26 by inserting the stopper 32, and at this time, the work of fastening the hooked part 102 is easy because the hooked part 102 has an annular shape. It can be performed.

In addition, in the case of this example, since the insertion concave portion 102A of the hooked portion 102 has a vertically long shape, the stopper 32 can be inserted at any position of the insertion concave portion 102A. . That is, the insertion recess 102A
Can be relatively changed in the vertical direction, so that even if the sticking position of the plate-like building material 10 has a slight positional error in the vertical direction, the hooked portion 102 can be moved without any trouble. It can be fixed to the work surface 26 with the stopper 32.

Further, in the present embodiment, since the latch 100 can be rotated around the coil-shaped portion 22, even if the plate-like building material 10 has a positional error in the left-right direction, the latch 100 is rotated based on the rotation of the latch 100. Further, based on the longitudinal shape of the insertion concave portion 102A, the hooked portion 102 can be fastened with the stopper 32 without any trouble.

More specifically, as shown in FIGS. 7 and 8, a prepared hole 110 is provided in advance in the work surface 26, and the stopper 32 is inserted into the prepared hole. When fastening to the work surface 26, the pilot hole 110
8 is scattered in the vertical and horizontal directions relative to the sticking position of the plate-like building material 10, specifically, the oblique line 112 in FIG.
Even if the position of the pilot hole 110 is relatively varied within the range indicated by, the stopper 32 is inserted into the pilot hole 110 without any problem.
It can be fixed.

In other words, in this example, the work of attaching the plate-like building material 10 and the work of attaching the hooked portion 102 of the hook metal fitting 100 are performed in a state where the pilot hole 110 is opened in the work surface 26 in advance. It is possible to perform the
0 can be performed easily.

In this example, when the plate-like building material 10 is separated from the adhesive, the upper end of the insertion recess 102A hits the stopper 32 and is suspended by the stopper 32. At this time, the hooked portion 10
2, the end portion 104 is formed so as to extend from the back surface side to the front surface side with respect to the annular main body portion 108 so as to intersect.
The stop action of the end portion 104 prevents the annular hooked portion 102 from expanding and deforming.
Has the advantage of being reliably hung by the stopper 32.

That is, when the stopper action by the end portion 104 is not performed, as shown in FIG.
There is a possibility that the hooked portion 102 may be expanded and deformed by the weight of zero or by an impact at the time of dropping, but in this example, there is no such a risk.

FIG. 10 shows another embodiment of the present invention. In this example, the coil-shaped portion 36 of the latch 34 made of a metal wire is configured to have a predetermined gap between the windings. In this figure, reference numeral 38 denotes a metal fixing pin which has a cylindrical shape and has a wavy slit groove 40 formed in the vertical direction. The slot 40 imparts elasticity to the fixing pin 38 itself in the expanding and contracting directions.

In this example, the outer diameter of the coiled portion 36 is slightly larger than the inner diameter of the hole 12, and the outer diameter of the fixed pin 38 (the outer diameter in the free state) is larger than the inner diameter of the coiled portion 36. Is also slightly larger.

In the case of this embodiment, the coiled portion 36 can be inserted into the hole 12 in the same manner as in the above embodiment. At this time, since the coil-shaped portion 36 is not tightly wound, the latch metal 34 of the present example can be inserted into the hole 12 more easily.

Thereafter, the fixing pin 38 is pushed into the coiled portion 36 with elastic deformation in the radially reduced direction. Then, when the fixing pin 38 is inserted into the coil-shaped portion 36, the outer surface of the coil-shaped portion 36 is
Press strongly against the inner peripheral surface of. Thereby, the latch metal 34 is firmly fixed to the plate-like building material 10. In some cases, a pin having no slit groove 40 may be used as a fixing pin.

In this embodiment, similarly to the first and second embodiments, the latch 34 can be inserted and fixed into the hole 12 of the plate-like building material 10 by a simple operation, and the hole 12 can be formed at low cost. It has the advantage that it can be processed easily at low cost.

Further, the latches 34 and the fixing pins 38 are lightweight, and the latches 34 protrude to the outside in parallel with the back surface of the plate-shaped building material 10, so that the workability for fastening is good, and Effectively use the holding force of the fasteners 34 for the plate-like building material 1
It has advantages such as being able to affect zero. In addition, the entire latch metal 34 can be housed inside the plate-like building material 10 by a rotating operation, which has an advantage that packing and transportability are good.

In the present embodiment, it is also possible to fill the inside of the hole 12 with the filler 60 and fix it after mounting the latch fitting 34, or to omit this.

FIG. 11 shows a comparative example of the present invention. In this example, a bent portion 44 having a rectangular shape corresponding to the longitudinal cross-sectional shape of the hole 12 and having an open upper end is formed at the end of the metal fitting 42 made of a metal wire. In the case of this example, when the bent portion 44 is inserted into the hole 12 and the fixing pin 38 is pushed in, the bent portion 44 is strongly applied to the inner peripheral surface of the hole 12 by the expanding force based on the elastic deformation of the fixed pin 38. Pressed and fixed.

The bent portion 44 of this example can be formed at a low cost because of its simple shape. In addition, the latch 42 can be inserted and fixed into the hole 12 of the plate-like building material 10 by a simple operation, and the hole 12 has a simple shape, so that the processing cost can be reduced.

The latch 42 and the fixing pin 38 are light in weight, and the latch 42 protrudes to the outside in parallel with the back surface of the plate-shaped building material 10.
Further, there is an advantage that the hanging force by the hook 42 can be effectively exerted on the plate-like building material 10.

In the present embodiment, it is also possible to fill the inside of the hole 12 with the filler 60 and fix it after mounting the latch 42, or to omit it in some cases. In some cases, a pin having no slit groove 40 may be used as the fixing pin.

FIG. 12 shows another comparative example of the present invention. The latch metal 46 of this example is formed by bending a metal wire into a substantially U-shape, and an intermediate portion protrudes outside the plate-like building material 10 in a state of being attached to the plate-like building material 10.

An elastic fitting portion 48 formed by bending a wire into an incomplete loop is formed at each end of the latch metal 46. The elastic fitting portion 48 is elastically inserted into the hole 12. It has been pushed. On the other hand, the plate-like building material 10
An approximately semicircular hook-shaped hooked portion 50 having an insertion recess 50A is formed in the intermediate portion that protrudes more outward.

In this embodiment, it is sufficient to mount only one latch 46 on each plate-like building material 10, so that the number of latches is small, and the plate-like building material 10 is mounted on the work surface. At the time of the sticking work, it is only necessary to fix the one hooked portion 50 to the work surface with the stopper, which is advantageous in that the work is simple.

Also in this embodiment, since the holes 12 of the plate-like building material 10 have a simple shape, as in the above-described embodiments, the processing cost can be reduced. By extending in parallel, the workability of fastening to the work surface is good, and the hanging force by the hooks 46 can be effectively exerted on the plate-like building material 10. It has advantages such as being lightweight and inexpensive with a metal linear material. In this example, the filling material 60 can be filled in the hole 12 and can be omitted in some cases.

FIG. 13 shows still another comparative example . In this example, a straight hole 12 similar to the above is formed on the back surface of the plate-like building material 10, and a slot 72 is provided inside the hole 12, and a cylindrical pin 74 that can be elastically deformed in the radial direction is elastically attached. It is fixed by pushing it in with force, and one end of a latch 70 having a linear shape as a whole is inserted into a radial through hole 76 formed in the pin 74, and then wound around the pin 74. The end is fixed to the pin 74, that is, to the plate-like building material 10. It is to be noted that various types of pins such as those having no slot and those having a cylindrical shape can be used.

Also in this embodiment, there is an advantage that the latch 70 can be fixed to the plate-like building material 10 by a physical engagement force, and the fixing operation is easy. In this embodiment, the filling material 60 can be filled in the pin 74.

FIG. 14 shows still another comparative example . In the figure, reference numeral 78 denotes a latch having a form in which one metal wire is bent into two, and a loop-shaped portion 80 is provided at one end.
Hooked portion 82 having an insertion recess 82A on the other end side
have.

In FIG. 14B, reference numeral 84 denotes a fixing bracket which has a cylindrical shape as a whole and has a flange 86 at one end. The fixing bracket 84 has a slit groove 88,
Thereby, it can be elastically deformed in the radial direction. 90
Is a pin having a wavy slit groove 92 and having elasticity in the radial direction.

In this example, the fixing bracket 84 is
When the pin 90 is elastically pushed into the inside of the fixing bracket 84, the fixing bracket 84 is expanded and pressed against the inner peripheral surface of the hole 12 to be fixed. Thus, the hook metal 78 has the loop-shaped part 80 fitted to the fixing metal 84 between the flange 86 and the back surface of the building material, and is fixed to the plate-shaped building material 10. Also in this example, the latch metal 78 can be firmly fixed to the plate-like building material 10 by the physical engagement force,
Also, there is an advantage that the fixing work is easy.

Also in this example, it is possible to fill the space of the hole 12 with the filler 60 after fixing the fixing fitting 84, the locking fitting 78 and the like.

The embodiment of the present invention has been described in detail above, but this is merely an example. For example, in the present invention, one side is 300 mm
The present invention can be suitably applied to plate-like building materials such as the large ceramic tiles described above, but can also be applied to small plate-like building materials having a side smaller than 300 mm in some cases. Further, the present invention is applicable not only to the wet construction method but also to the case of performing the sticking construction by the dry construction method. Further, the present invention can be configured in various modified forms without departing from the gist thereof, such as the number and size of the holes in the plate-shaped building material are not limited.

[Brief description of the drawings]

FIG. 1 is a view of a plate-like building material with a latch according to one embodiment of the present invention.

FIG. 2 is a view showing a mounting procedure of a latch in the embodiment.

FIG. 3 is a view showing an example of the construction of the plate-like building material with the latch metal of FIG. 1;

FIG. 4 is an explanatory view of an advantage of the building material with a latch of FIG. 1;

FIG. 5 is a view of the single plate-like building material of FIG. 1;

FIG. 6 is a view of a plate-like building material with a hook according to another embodiment of the present invention.

FIG. 7 is a view showing a state in which the plate-like building material with the latch metal of FIG. 6 is attached to a work surface;

FIG. 8 is an explanatory view of advantages of the plate-like building material with the latch of FIG. 6;

FIG. 9 is a comparative example diagram shown as a comparative example for explaining the advantages of the plate-like building material with the latch metal of FIG. 6;

FIG. 10 is a view showing a mounting procedure of a latch according to another embodiment of the present invention.

FIG. 11 is a diagram showing a mounting procedure of a latch in a comparative example of the present invention.

FIG. 12 is a view of a plate-like building material with a latch according to another comparative example of the present invention.

FIG. 13 is an explanatory view of still another comparative example of the present invention.

FIG. 14 is an explanatory view of still another comparative example of the present invention.

FIG. 15 is a view showing a conventional structure for preventing a plate-like building material from falling off by using a latch.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 Plate-shaped building material 12 hole 16,34,42,46,70,78,100 Hook 18 Main body 20,50,82,102 Hook 20A, 82A, 50A, 82A, 102A Insertion recess 22,36 Coil Shaped part 38 Fixing pin 40 Slot groove 44 Bent shape part 48 Elastic fitting part 60 Filler 104 End part 108 Annular body part

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Iwao Nishino 5-1-1 Koie Honcho, Tokoname-shi, Aichi Prefecture Inax Corporation (72) Inventor Mitsuru Mitsuru 5-1-1 Koie Honcho, Tokoname-shi, Aichi Stock Company (56) References JP-A-4-350248 (JP, A) JP-A-60-92551 (JP, A) JP-A-7-269069 (JP, A) JP-A-59-2826 (JP, A) U) Shokai Sho 60-126644 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) E04F 13/08-13/18

Claims (1)

(57) [Claims] An inner peripheral surface of a hole is formed on the back surface of a plate-like building material.
A circle extending straight from the bottom to the bottom, parallel to the axis of the hole
Is formed, and a metal linear material is formed inside the hole.
A linear end portion of the configured latch;
The entire cylindrical coil-shaped part formed by winding into a winding
Friction based on the elastic force in the expanding direction of the coiled part when inserted
While fixing to the hole by force, the linear shape of the
The main body is extended to the outside along the back of the plate-like building material.
And the part protruding outside the plate-like building material is
Insert a fastener such as a screw to fasten the
A plate-like building material provided with a hook fitting, wherein a hooked portion having a through recess is provided .