JP2761029B2 - Architectural decorative panel - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a decorative panel for building.

(Prior Art) As an architectural decorative panel, there is generally known a decorative panel having a back surface of a decorative plate adhered to a surface of a base material and having an embedded nut in which a screw hole is opened on the back surface of the base material.

For example, Japanese Unexamined Patent Publication No. 61-75157 discloses a method using a cap nut with a plate as the embedded nut. That is, this is provided with a through hole in which the nut body of the cap nut fits in the base material, and a concave seat in which the plate fits in an opening edge of the through hole on the base material surface side, and the cap nut is formed as described above. The plate is embedded in the through hole so as to be flush with the surface of the base material, and the decorative plate is bonded to the base material from above.

In the above publication, as another example, the cap nut with the plate was embedded in the base material so that the plate protruded from the surface of the base material, and the base material and the decorative board were bonded to sandwich the plate. Things are also described.

In this case, the cap nut is used as a base for the decorative panel (steel frame)
It is used for screwing.

(Problems to be Solved by the Invention) However, in the case of the above-described conventional technology, the positioning between the decorative plate and the base material or the cap nut when the decorative plate is bonded to the base material is performed by visual observation, so that the accuracy is low. It is difficult to position well. In addition, even if the base material and the decorative board are accurately aligned at the time of bonding, the mortar and other adhesives used for the bonding require a certain amount of time to cure, and during that time, the base material and the decorative board are used. There is a problem that the positional deviation easily occurs.

That is, when building decorative panels are mass-produced in a factory, the bonded panels are sequentially stacked for curing. However, since the adhesive itself is uncured, a displacement may occur between the base material and the decorative plate during the stacking operation, or a similar displacement may occur in an already stacked product.

Such a displacement is difficult to correct even if the adhesive is uncured because the base material and the decorative board have already been bonded. Therefore, after the adhesive is cured, the peripheral portion of the decorative panel is processed and refinished. However, it takes time and effort, and the refinish causes the embedded nut on the decorative panel. There is a problem that the position gets out of order. And this is
This has a negative effect on construction. In other words, usually, the foundation work is performed first, and the decorative panel is fastened on top of it.However, the position of the bolt holes on the base material and the position of the nuts on the decorative panel are shifted, and the bolt holes The position, and thus the fastening position of the decorative panel with bolts, must be changed.

Further, in the case of embedding the above-mentioned cap nut with a plate in the base material so that the plate protrudes from the base material surface, a gap of a plate thickness is generated between the base material and the decorative plate,
A large amount of adhesive is required to bond the two.

That is, an object of the present invention is to provide a decorative panel with an embedded nut having a structure that can easily adhere a base material and a decorative plate without displacement and does not cause displacement after bonding. An object of the present invention is to provide a panel having high workability and high mounting strength to a base.

(Means for Solving the Problems) In order to solve such problems, the present invention provides an embedded nut with a head for preventing the nut from coming off in the axial direction. A function of positioning the base material and the decorative panel is provided to improve the workability in the production of the decorative panel, and to improve the mounting strength of the decorative panel, workability, and the like.

That is, the concrete means is that the back surface of the decorative plate is adhered to the surface of the base material according to claim (1), and the nut is embedded in the base material and the screw hole is opened in the back surface of the base material. A decorative panel for construction embedded at least, wherein the embedded nut is constituted by a substantially T-shaped cap nut having a large-diameter head and a small-diameter leg with a screw hole, The outer shape of the head is non-circular, and the top surface of the head has a tapered portion that is formed with a downward slope toward the periphery. And a through hole having a concave seat formed in a non-circular shape following the outer shape of the head of the embedded nut at the opening edge on the front surface side, and the leg portion of the embedded nut has a through hole in the through hole. The lower part of the head is fitted into the concave seat The top surface of the head is provided so as to protrude from the surface of the base material, and the decorative plate has a tapered surface on the back surface corresponding to the tapered portion of the head top surface of the embedded nut. The decorative board is bonded to the surface of the base material and the top of the embedded nut with an adhesive in a state where the top of the embedded nut is fitted into the recess. It is characterized by the following.

The means according to claim (2) is one in which at least one of the front surface of the base material and the back surface of the decorative plate is provided with irregularities, and the top surface of the head of the means-embedded nut according to claim (3) is irregular. Is attached.

(Function) In the decorative panel for construction according to claim (1), since the embedded nut is a substantially T-shaped cap nut having a head, the head prevents the nut from coming off the decorative panel. Exhibit function. Since the outer shape of the head is non-circular, the head has a function of screwing the bolt into the screw hole and preventing the nut from turning when tightening.

Then, the embedded nut forms a tapered portion on the top surface of the head, is fitted so that the top surface of the head projects into the through hole of the base material, and is inserted into a decorative plate adhered to the base material. Since the tapered concave portion into which the top surface of the head fits is provided, the top surface of the head, together with the tapered concave portion, exhibits a positioning function between the base material and the decorative board.

That is, even if the decorative plate is slightly misaligned with respect to the base material, the tapered recess is guided by the tapered top surface of the head of the embedded nut and fitted into this head. As a result, the position shift is corrected. In this aligned state, the engagement between the tapered recess and the tapered top surface of the embedded nut head allows the position between the decorative plate and the base material even when the adhesive is in an uncured state. Displacement is prevented.

In the decorative panel for construction according to claim (2),
The unevenness provided on at least one of the base material and the decorative plate improves the holding of the adhesive and improves the adhesiveness.

In the decorative panel for construction according to claim (3),
The unevenness provided on the top surface of the head of the embedding nut improves the holding of the adhesive on the top surface of the head and improves the adhesiveness.

(Effect of the Invention) Therefore, according to the invention described in claim (1), the precision of the base material and the decorative plate is high due to the tapered top surface of the embedded nut head and the tapered concave portion of the decorative plate. Since the positioning can be easily performed and the displacement between the two can be prevented, the workability in the production of the decorative panel can be improved, the yield can be improved, and the decorative panel with stable quality can be mass-produced. It will be easier.

In addition, since the displacement of the embedding nut on the decorative panel is eliminated, the decorative panel can be tightened with the bolt to the base at a predetermined position, and the mounting work on the base can be facilitated. The rotation stopping function of the head contributes to the improvement of the workability of tightening the bolt, and the head serves as a stopper for the embedded nut, thereby contributing to the improvement of the mounting strength of the decorative panel and the workability.

According to the invention described in claim (2), at least one of the surface of the base material and the back surface of the decorative board is provided with irregularities, so that the adhesiveness between the base material and the decorative board can be improved, Panel quality can be improved.

According to the invention of claim (3), since the top surface of the head of the embedding nut is made uneven, the adhesion between the decorative panel and the embedding nut can be improved, and wobbling of the embedding nut can be prevented. Thus, it is possible to improve the workability of the decorative panel on the groundwork or the mounting stability.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.

FIG. 1 shows a state in which a decorative panel 1 for a building is attached to a foundation (steel frame) 3 with bolts 4 using its embedded nut 2. That is, the decorative panel 1
The decorative plate 6 is adhered to the surface of the base material 5 with an adhesive, and the screw hole 7 of the embedded nut 2 is opened on the back surface of the base material 5. Installed with.

The specific configuration of the embedded nut 2 is shown in FIG. 2 to FIG.

The embedded nut 2 is a cap nut having a large-diameter head 11 formed on the side where the screw hole 7 is closed.
Leg 12 with a small diameter and a circular cross section that extends in the axial direction on the side with the opening
Are formed, and the head 11 and the legs 12 have a substantially T-shaped vertical cross-sectional shape. And the above head 11
As shown in FIG. 2 (plan view), the outer shape is formed into an oval (non-circular) shape, and the top surface has a flat portion 11a at the center, and the top surface extends from the flat portion 11a to the periphery. Therefore, the tapered portion 11b has a downward slope, and the tapered portion 11b is continuous with the head side surface 11c.

FIG. 5 shows the relationship between the embedding nut 2, the base material 5, and the decorative plate 6.

That is, the base material 5 is a plate-like body having fine irregularities all over its surface, and is provided at a plurality of locations (1 in the drawing).
(Only locations are shown) are formed with through-holes 13 opened on the front and back for fitting the embedded nut 2. The through-hole 13 is formed in a leg fitting portion 13a into which the leg 12 of the embedded nut 2 is fitted. The lower part of the part 11 comprises a concave seat 13b to be fitted.

In this case, the substrate 5 is made of an inorganic material such as ALC.
(Aerated concrete), or other building materials such as a composite panel can be used, and not only a solid panel but also a hollow panel may be used.

The decorative plate 6 has a tapered surface corresponding to the top tapered portion 11b of the head 11 of the embedded nut 2 on the back surface of a plurality of locations (only one location is shown in the drawing) corresponding to the through holes 13 of the base material 5. It has a recess 14 that has 14a and into which the top surface of the head 11 fits. As the decorative plate 6, a large-size tile, a stone material, or the like can be used.

In manufacturing the decorative panel 1, first, the leg 12 of the embedded nut 2 is inserted into the leg fitting portion 13 of the through hole 13 of the base member 5.
a from the front side of the base material 5 and the head 11
Fit the recess 13b up to the upper edge of 1c. Thus, the embedded nut 2 is provided with the top surface of the head 11, that is, the flat portion 11 a and the tapered portion 11 b protruding from the surface of the base material 5. In this case, the embedded nut 2 can be fixed to the base member 5 by press-fitting the through hole 13 or by using an adhesive.

Then, an adhesive is applied to the top surface of the head 11 of the embedding nut 2 and the surface of the substrate 5, and the decorative plate 6 is fitted to the substrate 5. At this time, the adhesive is held substantially uniformly on the entire surface of the base material 5 by the minute unevenness. Then, even if the decorative plate 6 is slightly misaligned with respect to the base member 5, if the decorative plate 6 is pressed against the base member 5 as it is, the concave portion 14 is formed on the top surface of the head 11 of the embedded nut 2. The two tapered surfaces 14a and the tapered portions 11b engage with each other by being guided. As a result, the decorative plate 6 is adjusted to the base material 5 with the above-mentioned positional deviation corrected.

In this mating state, even when the adhesive is in an uncured state, the top surface of the head of the embedding nut 2 protruding from the surface of the base material 5 and the concave portion of the decorative plate 6 engage with each other to form the decorative plate. Misalignment between the substrate and the base material is prevented.

In the above embodiment, the surface of the base material 5 is provided with irregularities. However, the surface may be provided on the back surface of the decorative plate 6 or on both. Therefore, the adhesive may be applied not to the front side of the base material 5 but to the back side of the decorative board 6, or may be applied to both the base material 5 side and the decorative board 6 side.

Therefore, in the production of the decorative panel 1, the positioning of the base material 5 and the decorative plate 6 by the top surface of the head 11 of the embedding nut 2 and the concave portion 14 of the decorative plate 6 improves the bonding workability and the yield. And it becomes easy to mass-produce the decorative panel 1 with stable quality.

In addition, in the decorative panel 1, since the embedded nut 2 is not displaced, a tightening position with the bolt to the base 3 can be provided as scheduled, and the work of attaching to the base 3 is facilitated. The mounting strength can be improved. Furthermore, the head 11 of the embedded nut 2 has a detent function due to the oval outer shape, and the workability of tightening the bolt is improved. Will be improved.

6 to 8 and 9 to 11 show other examples of the embedded nut.

That is, the embedded nut 15 shown in FIGS.
In FIG. 5, the head 16 is formed in an elliptical shape with the length of the short axis substantially equal to the diameter of the leg 17, and is provided with a plurality of concave holes 16a at the center of the top surface to provide irregularities. The length of the leg 17 is shorter than that of the previous embodiment, so that the leg 17 is suitable for a substrate having a small thickness. The configuration of the tapered portion 16b and the side surface 16c on the top surface of the head 16 and the screw holes 18 are substantially the same as those of the previous embodiment.

In the case of the embedding nut 15 of this example, since the top surface of the head 16 is provided with irregularities, the unevenness improves the glue adhesion and improves the adhesiveness to the decorative board.

In the embedded nut 21 shown in FIGS. 9 to 11, the outer shape of the head 22 is formed in a rectangular shape, and a groove 22a is formed in the center of the top surface of the head 22 in a lattice shape so that the top surface has irregularities. Is attached. Leg 23, tapered portion 22b on the top surface of the head 22
The configuration of the side surface 22c and the screw hole 24 is substantially the same as that of the previous embodiment.

In the case of the embedded nut 21 of the present example, since the outer shape of the head 22 is rectangular, it is excellent in its detent function, and is formed of a groove 22a in which the irregularities on the top surface of the head 22 are assembled in a lattice shape. Therefore, the adhesiveness to the decorative board is good.

[Brief description of the drawings]

BRIEF DESCRIPTION OF THE DRAWINGS The drawings show an embodiment of the present invention, FIG. 1 is a longitudinal sectional view showing a state in which a decorative panel for construction is mounted on a base, FIG. 2 is a plan view of an embedded nut, FIG. The figure is the same longitudinal sectional view, FIG. 5 is an exploded sectional view of the decorative panel, and FIG.
FIGS. 8 to 9 and FIGS. 9 to 11 show other examples of the embedded nut, respectively. FIGS. 6 and 9 are plan views, and FIGS. 7 and 10 are front views. 8 and 11 are longitudinal sectional views. 1 ... decorative panel 2,15,21 ... embedded nut 3 ... base 5 ... base material 6 ... decorative board 7,18,24 ... screw hole 11,16,22 ... head 11b, 16b, 22b Tapered section 12,17,23 Leg 13 Through hole 13b Concave seat 14 Concave section 14a Tapered surface

Claims (3)

(57) [Claims] 1. A decorative panel for architectural use, wherein a decorative plate has a back surface adhered to a surface of a base material and a nut embedded in the base material with its screw hole opened in the back surface of the base material. The embedding nut is formed of a substantially T-shaped cap nut having a large-diameter head and a small-diameter leg with a threaded hole, and the head has a non-circular outer shape. In addition, the top surface of the head has a tapered portion that is formed with a downward slope toward the periphery, and the base material passes through the opening nut on the front and back sides and the embedded nut on the opening edge on the front surface side. It has a through-hole having a concave seat formed in a non-circular shape following the outer shape of the head, and the embedded nut has its legs fitted into the through-hole from the surface side of the base material, and The lower part is fitted in the concave seat, and the top surface of this head projects to the surface of the base material. The decorative plate has a concave portion on its back surface, which has a tapered surface corresponding to the tapered portion of the head top surface of the embedded nut and in which the top surface of the head fits. A decorative panel for architectural use, wherein the head top surface of the embedded nut is fitted into the recess, and is bonded to the surface of the base material and the head top surface of the embedded nut with an adhesive. 2. The decorative panel for construction according to claim 1, wherein at least one of the front surface of the base material and the back surface of the decorative plate has irregularities. 3. The decorative panel for construction according to claim 1, wherein the top surface of the head of the embedded nut is provided with irregularities.