JPH08158534A - Honeycomb panel for building - Google Patents

Abstract

PURPOSE: To provide a honeycomb panel in which an improved adhesive that resists the shearing force working on the joint between a panel board and a frame. CONSTITUTION: A honeycomb panel is constructed of a frame 2 formed in a rectangular shape, a honeycomb core 3 arranged inside the frame, and a panel board 5 stuck with adhesive 4 to a face piece 21 of the frame 2 in a manner of extending over the face piece 21 of the frame 2 and the honeycomb core 3. Recessions 23 and projections 24 are formed alternately on the surface 22 contacting the panel board 5 of the frame 2 in the direction of the face on a section intersecting at a right angle the axis of the frame 2. A layer of adhesive in thickness at a minimum in necessity can be ensured for a joint between the frame 2 and the panel board 5 with the recessions 23.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a construction honeycomb panel in which the adhesion between a frame material and a panel plate adhered thereto is improved,
In particular, the present invention relates to an architectural honeycomb panel suitable for use as an outer wall material of a curtain wall.

[0002]

2. Description of the Related Art In a honeycomb panel, a frame material framed and a honeycomb core are sandwiched between panel plates, and an adhesive is filled or applied between the panel plate and the frame material and pressed. It is manufactured by adhering the panel board to the frame material.Both the frame material and the panel board are flat, and the thickness of the adhesive layer is in units of 1/10 mm. Unless pressure can be applied, it is difficult to keep the layer thickness of the adhesive constant over the entire surface.

When the honeycomb panel is used as an outer wall material, the panel plate is bent by positive and negative wind pressures, and as a result, it tends to slip relative to the frame material at the bonding portion with the frame material and to cause relative displacement. A shearing force is applied to the adhesive in its displacement direction. The adhesion state of the panel plate and the frame material under the action of shear force is governed by the adhesive strength and shear deformation capacity of the adhesive under the condition that the required adhesive layer thickness is secured, but the adhesive layer thickness required during production If is not ensured, the deformability of the adhesive will decrease, causing peeling and breakage due to shearing force,
It is not possible to maintain a sound adhesive state.

Further, since it has been known that the shear stress of the adhesive due to the shearing force between the panel plate and the frame material becomes large at the end of the adhesive, reduction of the shear stress at this end is a problem in maintaining the adhesive performance. Becomes

The present invention was made by paying attention to the relationship between the adhesive layer thickness of the adhesive between the panel plate and the frame material and the adhesive performance, and proposes a honeycomb panel for construction which can surely secure the required adhesive layer thickness. To do.

[0006]

According to the present invention, a concave portion and a convex portion are alternately formed in a finding direction on a surface of a frame material to be adhered to a panel plate so that a necessary adhesive layer can be securely provided between the frame material and the panel plate. To prevent deterioration of the adhesive performance.

Due to the concave and convex portions formed on the adhesive surface of the frame member, the gap between the convex portion and the panel plate is reduced with respect to the panel plate when pressure is applied, or the convex portion is in close contact with the panel plate. Even if it becomes, at least in the concave portion, a constant space is maintained, so that the adhesive layer is surely secured over the entire width of the fitting piece.

The adhesive performance such as the adhesive strength and the deformability on the adhesive surface of the adhesive is governed by the magnitude of the shear stress generated in the adhesive layer of the adhesive when the inherent performance of the adhesive itself is ignored, and the shear stress is As described in the examples, it tends to increase at both ends in the shear force acting direction, but in the present invention, the shear stress at the end is reduced by increasing the layer thickness at the end position of the adhesive layer by forming the recess. And improve the adhesive performance of the adhesive.

In addition, since the resistance to shearing force increases as the cross-sectional area of the adhesive layer increases, if the concave portions and the convex portions are formed over the entire width of the adhesive surface between the frame material and the panel plate, they may be formed partially. The safety of the adhesive layer is further improved.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A honeycomb panel 1 for construction according to the present invention is arranged in a square frame 2 and an inner peripheral side thereof as shown in FIG. 3 and a sectional view taken along line xx of FIG. The honeycomb core 3 is formed of a panel plate 5 that is attached to the found piece 21 of the frame member 2 and the honeycomb core 3 by the adhesive 4 across the found piece 21 of the frame member 2. As shown in FIG. It is used as a panel or the like, and by forming concave portions 23 and convex portions 24 alternately on the bonding surface 22 of the frame material 2 with the panel plate 5, the shear stress generated in the adhesive 4 is reduced, and the adhesive 4 It ensures adhesiveness. Although the relationship between the concave portion 23 and the convex portion 24 is relative, the concave portion is the concave portion 23 and the convex portion is the convex portion 24 with respect to the panel plate 5.

When the outer wall panel has a height of one layer, it is divided into a window portion and a spandrel portion, but the building honeycomb panel 1 shown in FIG. 3 is arranged in the spandrel portion of the outer wall panel.

As shown in FIG. 1 and FIG. 2 which is an enlarged view of a part thereof, the concave portion 23 and the convex portion 24 are on a cross section orthogonal to the axis of the frame member 2.
The finding pieces 21 are alternately formed in the finding direction and are continuous in the axial direction. As shown in FIG. 1, when the panel plate 5 is attached to both sides of the frame member 2, the recesses 23 and the protrusions 24 are formed on the both fitting pieces 21, 21. The panel plate 5 located on the outdoor side is bent toward the panel plate 5 on the indoor side to prevent the adhesive 4 from falling off from the frame member 2 in the event of peeling or breakage, and the frame member 2 is exposed to the outdoor side. It is shaped to engage. In FIG. 1, reference numeral 25 denotes a seal material filled between the bent end portion of the panel plate 5 and the frame member 2.

The thickness of the adhesive 4, that is, the thickness of the adhesive layer, is such that when the bonding surface between the frame member 2 and the panel plate 5 is a flat surface,
In addition to the adhesive strength and tensile strength of the adhesive 4, it is determined by the shearing force acting between the frame member 2 and the panel plate 5. However, since the adhesive 4 itself has a unique value, in the present invention, from the magnitude of the acting shearing force. Can be decided Based on this required adhesive layer thickness, the height difference h between the concave portion 23 and the convex portion 24 and the pitch p between the concave portion 23 and the convex portion 24 are determined, and the height difference h between the concave portion 23 and the convex portion 24 is roughly determined. Is about the required adhesive layer thickness or less, and the pitch p of the concave portions 23 or the convex portions 24 is set to about 10 times the required adhesive layer thickness.

Except for the height difference h between the concave portion 23 and the convex portion 24, their shape, pitch size, or regularity of each pitch are not questioned at all, and as will be described later, these parameters are shear factors generated in the adhesive layer. Since it is related to the control of stress, as shown in FIGS. 2 and 7 to 9, concaves 23 and convexes 24 having a triangular shape, a trapezoidal shape, a rectangular shape, and the like are arranged at an equal pitch, and FIGS.
As shown in 13, the pitch of the concave portions 23 and the convex portions 24 themselves may be changed.

FIG. 5 shows the distribution of shear stress generated in the adhesive 4 when a shearing force acts between the frame member 2 and the panel plate 5, using the model of the shearing force test shown in FIG. The horizontal axis represents the distance of the adhesive 4 from the member 7 side corresponding to the panel plate 5, and the vertical axis represents the shear stress. The model is a member 6 corresponding to the frame member 2 having an adhesive surface where the concave portion 23 and the convex portion 24 are repeated, a member 7 corresponding to the panel plate 5 having a flat adhesive surface, and both adhesive surfaces of both members 6 and 7. A shearing force is applied by applying a tensile force to the member 6 corresponding to the frame member 2 while the member 7 corresponding to the panel plate 5 is fixed to the adhesive 4. In the model corresponding to the present invention, the end of the bonding surface of the member 6 corresponding to the frame member 2 is a recess 23.

For comparison, FIG. 5 also shows the results when both the bonding surface of the member 7 corresponding to the panel plate 5 and the bonding surface of the member 6 corresponding to the frame member 2 are flat surfaces. In the case where both adhesive surfaces are flat surfaces, the shear stress is small in the middle portion of the adhesive 4 in the shear force acting direction and tends to increase sharply at the ends of the adhesive 4, but a member corresponding to the frame member 2 6 is a recess
It can be seen that when the adhesive surface in which the protrusions 23 and the protrusions 24 are alternately repeated is increased, the increase in stress at the ends is suppressed.

From FIG. 5 again, in the case of the member 6 having an adhesive surface in which the concave portions 23 and the convex portions 24 are alternately repeated, the concave portions 23 and the convex portions are
It can be seen that the stress changes corresponding to 24, the stress is large in the convex portion 24 having a small adhesive layer thickness, and is small in the concave portion 23 having a large adhesive layer thickness. Therefore, by disposing the recesses 23 at both ends of the frame material 2 in the finding direction, the shear stress at the ends of the adhesive 4 is reduced, so that the recesses 23 and the protrusions 24 are positioned so that the recesses 23 are located at both ends of the adhesive surface 22. It can be said that the arrangement of the is effective in maintaining the adhesive performance of the adhesive 4.

FIG. 5 also shows the case where the pitch p of the concave portions 23 or the convex portions 24 is different, and the shearing stress generated in the adhesive 4 is the height difference h between the concave portions 23 and the convex portions 24. Recess 2
3 or changes depending on the pitch p of the convex portions 24, it is understood that the magnitude of the shear stress can be controlled by adjusting these values. Similarly, the magnitude of the shear stress can be controlled also by the size of the section in the adhesive surface 22 where the concave portion 23 and the convex portion 24 are formed, so that the concave portion 23 and the convex portion 24 are formed over the entire width of the adhesive surface 22. Besides, it may be formed in a part of the bonding surface 22 in the finding direction.

[0019]

According to the first aspect of the present invention, since the concave portion and the convex portion are alternately formed in the finding direction on the bonding surface of the frame material with the panel plate, the convex portion is formed on the panel plate at the time of pressurization. Even if the space between the panel and the panel is reduced, or even if the convex part comes into close contact with the panel plate, a constant space is maintained at least in the concave part, and the entire width of the found piece is maintained between the frame material and the panel plate. It is possible to reliably secure the minimum necessary adhesive layer over the entire length, and it is possible to prevent deterioration of the adhesive performance.

According to the second aspect of the present invention, by making both ends of the frame member in the finding direction to be concave with respect to the panel plate, it is possible to suppress the shear stress at the ends as shown in the above experimental results, so that the adhesive agent Adhesion performance is improved and safety against peeling and breaking is enhanced.

Since the resistance to shearing force increases as the cross-sectional area of the adhesive layer increases, if the concave portion and the convex portion are formed over the entire width of the adhesive surface of the frame material to the panel plate, it is more than partially formed. The safety of the adhesive layer is further improved.

[Brief description of drawings]

FIG. 1 is an x part of FIG. 3 showing a bonding portion between a frame material and a panel board.
It is a x-line sectional view.

FIG. 2 is a partially enlarged view of FIG.

FIG. 3 is an elevational view showing a honeycomb panel for construction.

[Fig. 4] Fig. 4 is an elevational view showing a usage state of a honeycomb panel for construction.

FIG. 5 is a graph showing a distribution of shear stress generated in the adhesive.

FIG. 6 is a schematic diagram showing a model for causing a shearing force in an adhesive.

FIG. 7 is a cross-sectional view showing an adhesive surface when a concave portion and a convex portion are formed in a triangular shape.

FIG. 8 is a cross-sectional view showing an adhesive surface when a concave portion and a convex portion are formed in a trapezoidal shape.

FIG. 9 is a cross-sectional view showing an adhesive surface when a concave portion and a convex portion are formed in a rectangular shape.

FIG. 10 is a cross-sectional view showing an adhesive surface in the case where the recesses and protrusions of the shape shown in FIG. 2 have an irregular pitch.

FIG. 11 is a cross-sectional view showing an adhesive surface when the pitch of the concave portions and the convex portions of the shape shown in FIG. 7 is irregular.

FIG. 12 is a cross-sectional view showing an adhesive surface in the case where the pitch of the concave portions and the convex portions of the shape shown in FIG. 8 is irregular.

FIG. 13 is a cross-sectional view showing an adhesive surface in the case where the recesses and protrusions of the shape shown in FIG. 9 have an irregular pitch.

[Explanation of symbols]

1 ... Honeycomb panel for construction, 2 ... Frame material, 21 ... Finding piece, 22 ... Adhesive surface, 23 ... Concave section, 24 ... Convex section, 3 ...
Honeycomb core, 4 ... Adhesive, 5 ... Panel plate, 6 ...
A member equivalent to a frame member, 7 ... A member equivalent to a panel plate.

 ─────────────────────────────────────────────────── --- Continuation of the front page (72) Inventor Takashi Nagayasu 2552-4 Kamikoizumi, Namekawa, Toyama Prefecture (72) Inventor Hideo Sugino 330 Higashiura, Sanbongi, Sanbongi-cho, Shida-gun, Miyagi Prefecture

Claims (3)

[Claims] 1. A frame member 2 framed in a rectangular shape, a honeycomb core 3 arranged on the inner peripheral side thereof, and a found piece of the frame member 2.
The construction honeycomb panel 1 is composed of a panel plate 5 that is attached to the found piece 21 of the frame member 2 with the adhesive 4 over the honeycomb core 3 and the honeycomb core 3, and is provided on the bonding surface 22 of the frame member 2 with the panel plate 5. Is a honeycomb panel for construction in which concave portions 23 and convex portions 24 are alternately formed in the finding direction. 2. The building honeycomb panel according to claim 1, wherein both ends of the bonding surface 22 in the finding direction are recesses 23 with respect to the panel plate 5. 3. The construction honeycomb panel according to claim 1, wherein the concave portion 23 and the convex portion 24 are formed over the entire width of the adhesive surface 22.