JP5290056B2 - Composite construction materials - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide composite structure building materials capable of ensuring a more satisfactory connection state of a metal part and an adhesive layer than ever. <P>SOLUTION: A frame body 2 formed by the composite structure building materials has a structure constituted by sticking a wooden layer 21 and a metallic layer 22 mutually through the adhesive layer 24. A groove 30 is formed on a joint face on a metallic layer 22 side and is filled with part of adhesive to join them so that the effect of anchoring between the metallic layer 22 and the adhesive layer 24 is further enhanced. The inner side face of the groove 30 has a constriction forming part 30b for making the width of groove smaller than the width of parts being adjacent to the groove in the front and rear in the direction of depth at a halfway position in the direction of depth. The adhesive layer 24 is formed to be harder than the wooden layer 21 by epoxy resin adhesive or the like. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to a building material that constitutes a wall part of a building such as a window frame, sliding door, door, curtain wall, etc., and relates to a composite structure building material in which one wall surface side is made of metal and the other wall surface side is made of wood. It is.

  As a composite structure building material as described above, a composite building material having a structure in which a metal portion forming an exterior side and a wood portion forming an interior side are joined has been put into practical use as a sash, a curtain wall, or the like. In the composite building material disclosed in Patent Document 1, a groove-shaped recess for filling an adhesive on the metal part side or the wood part side is formed on the joint surface between the metal part and the wood part in order to increase the binding force. . In order to make it difficult for the adhesive layer to be detached from the groove, the cross-sectional shape of the recess has been proposed as a so-called dovetail shape in which the groove width on the opening side is smaller than the groove width on the bottom side. Further, as the adhesive layer, a rubber material (particularly, a silicone rubber material) that is softer and more elastic than wood is employed so that the difference in shrinkage between the wood portion and the metal portion can be absorbed.

JP 2004-60223 A

  In the conventional composite structure building material, since the adhesive layer is made of a rubber material, the strength is likely to be insufficient, and there is a difficulty in that a break is likely to occur when a strong shearing force acts between the metal part and the wood part. Also, when adhesive peeling occurs on the metal side, the adhesive material is too flexible, so even if the groove shape on the metal side is changed to an ant groove, the adhesive layer filling it easily deforms and leaves the groove There is a problem that is easy to do.

  The subject of this invention is providing the composite-structure building material which can ensure the coupling | bonding state of a metal part and an adhesive material layer still more favorably.

Means for solving the problems and effects of the invention

In order to solve the above problems, the composite structural building material of the present invention is
A composite structure building material having a metal layer portion that forms the building material exterior side, a wood layer portion that forms the building material interior side, and an adhesive layer that bonds the metal layer portion and the wood layer portion,
A groove portion that is filled with a part of the adhesive forming the adhesive layer is formed on the joint surface between the metal layer portion and the wood layer portion, and on the inner side surface of the groove portion, the groove bottom side in the groove depth direction is formed. A narrow portion is formed in which the groove width is narrower than the portion adjacent to
And an adhesive material layer consists of a polymeric material harder than a wood layer part, It is characterized by the above-mentioned.

  According to the structure of the composite structure building material of the present invention, the adhesive filling the metal-side groove portion having the narrow portion is configured to be harder than the wood layer portion joined to the metal layer portion. Thereby, even if a strong shearing force acts between the metal layer portion and the wood layer portion, the adhesive layer is not easily broken. In addition, even if adhesive peeling occurs on the metal layer part side, the adhesive layer has higher rigidity than the wood layer part, so the elastic deformation of the adhesive filling the groove part including the narrow part is suppressed, and the narrow part It becomes difficult to cause a trouble to leave.

  In this case, if the wood layer portion is made of hard wood that is unlikely to undergo drying shrinkage or the like, the shrinkage difference between the metal layer portion and the wood layer portion is reduced, and even if the adhesive layer is hardened as described above, the shrinkage difference is reduced. It is difficult to cause peeling or the like derived from In addition, the use of hard wood can enhance the durability against impacts and the like and the decorativeness as an interior part. Hardwood is generally hardwood, especially oak, oak, zelkova, lawan, mahogany, teak, walnut, tamo, linden, merkaba, chestnut, maple, cherry, beech, kunugi, camphor and kempas (especially desirable) , Oak, oak, tamo, lawan, chestnut, teak, walnut, maple) can be suitably used in the present invention (but is not limited thereto).

  On the other hand, even if a material other than hardwood is used, the same effect as when hardwood is adopted can be obtained by using a compression material. For example, a compressed material of coniferous trees such as cedar, hinoki, pine, hiba or sawara can be suitably used in the present invention (however, it is not limited thereto). In particular, when cedar is used, the grain is beautiful, you can enjoy the healing effect due to the unique scent of cedar, and you can also expect insect and fungicidal effects. And what was compressed to about 40% to 60% by thickness ratio (thickness after compression / thickness before compression) (for example, trade name: “Tsuyo Sugi” (made by Mywood Two Co., Ltd.)) There is little shrinkage afterwards, and an effect excellent in strength, heat insulation or humidity control can be exhibited. In addition, because thinned wood can be used, it can contribute to the effective use of wood resources and contribute greatly to environmental conservation.

  Next, it is desirable to use an adhesive layer that has as small a volume shrinkage ratio as possible at the time of curing and bonding. When a material having a large volume shrinkage rate is used, the adhesive filled in the metal layer side groove portion is shrunk, and may easily be detached from the groove portion, resulting in a decrease in bonding force. In addition, the shear stress tends to remain between the adhesive layer and the metal layer portion or the wood layer portion due to shrinkage strain, which may cause peeling or warping. From this point of view, a reactive adhesive that cures even with a low amount of solvent by a reaction between fluid organic compounds can be suitably employed in the present invention, rather than a solution adhesive that has a large volume shrinkage due to solvent evaporation. The initial state of the reactive adhesive is a liquid mainly composed of components before causing a chemical reaction, and the type that starts the reaction by mixing is supplied in a two-part type or one sealed in a microcapsule or the like. The The type in which the reaction starts with the curing agent is supplied in a state where the liquid and the curing accelerator (liquid or solid depending on the type) are separately packed. In particular, a type that cures by causing a polymerization reaction, moisture absorption, condensation reaction, etc. by mixing different substances is called a chemical reaction type, and since there is no loss of solvent, the volume change is small and the filling effect of the groove is high. On the other hand, a one-pack type (thermosetting type) that cures and adheres by heating can also be adopted. In addition, the two-pack type can also be cured by heating.

  As the reactive adhesive, an epoxy resin adhesive or a urethane resin adhesive can be suitably used in the present invention.

(1) Epoxy resin-based adhesive An adhesive mainly composed of an epoxy resin, and there are a one-pack type and a two-pack type depending on the curing method, both of which can be used in the present invention. For example, a general-purpose two-part type uses an epoxy resin prepolymer obtained by condensation reaction of bisphenol A and epichlorohydrin as a main agent, and when a curing agent such as amine is added thereto, graft polymerization occurs and a three-dimensional polymer. It cures and adheres over time and thermosetting. Since the initial adhesiveness in the pre-cure before complete curing is high, the temporary adhesiveness between the wood layer portion and the metal layer portion is also good. The three-dimensionally polymerized polymer has excellent water resistance, moisture resistance, chemical resistance, electrical insulation, etc., and has the advantage of ensuring sufficient strength and heat resistance even with different metal / wood adhesion. There is. In addition, if the fluidity in the main agent state is increased, the adhesive material can be uniformly filled into the corners of the groove part, and the adhesive material can be infiltrated into the wood side, so that the wood layer part and the metal layer part are joined. Strength can be increased. In addition, in order to improve peel resistance (impact) and impact resistance, those blended with polymers such as nylon and isocyanate can also be used.

(2) Urethane resin adhesive This is a general term for an adhesive having a urethane group, and includes an adhesive derived from an isocyanate group or a hydroxy group and combined in a broad sense. There are a one-pack type and a two-pack type, and the one-pack type is to cure and adhere a mixed liquid of a urethane prepolymer and a catalyst by humidification or heating. In the two-pack type, a polyol having a hydroxyl group at the terminal and a polyisocyanate, or a urethane prepolymer having an isocyanate group at the terminal and a polyol are combined and mixed to cause a chemical reaction to cure and adhere. Although the hardness is slightly lower than that of the epoxy resin adhesive, it is characterized by excellent weather resistance and cold resistance, and has the advantage of being easily compatible with cold district specifications.

  Next, as the adhesive for forming the adhesive layer, a hot melt adhesive can be adopted in addition to the reactive adhesive. A hot melt adhesive is one in which a solid adhesive, a thermoplastic resin component, is heated and melted to give fluidity (hot melt), then applied and cured / adhered by cooling, and contains no solvent. Therefore, as a result, there is an advantage that the shrinkage amount at the time of curing is extremely small. What is necessary is just to employ | adopt the process which preheats and coats a metal layer part side, and superimposes and adhere | attaches a wood layer part. As the hot melt adhesive, for example, ethylene-vinyl acetate resin hot melt adhesive, urethane resin reactive hot melt adhesive, polyamide resin hot melt adhesive, polyurethane resin hot melt adhesive, etc. are suitably used in the present invention. can do.

  Next, as a groove part formed in a metal layer part, what a narrow part is formed in a groove opening position (for example, what has a trapezoid cross section (what is called an ant groove)) can be illustrated. Such a groove portion is particularly excellent in the effect of increasing the bonding force with the metal layer portion side by being filled with the adhesive.

On the other hand, it is also possible to form a constriction forming portion at a midway position in the depth direction on the inner side surface of the groove portion with a groove width smaller than the portion adjacent to the front and rear in the depth direction. By forming the constriction forming portion in the groove portion, the following effects are achieved.
(1) The groove portion is divided into a portion located on the groove opening side of the neck portion and a portion located on the groove bottom side by the constriction forming portion. When a peeling force acts between the wood layer part and the metal layer part, the adhesive filled in the part located on the groove bottom side through the constriction forming part from the groove opening side forms a convex constriction. Since it cannot be separated from the groove opening without overcoming the part, the effect of preventing the adhesive from coming off can be greatly improved.
(2) Since the portion located on the groove opening side of the groove portion is wider than the constriction forming portion, the adhesion area is increased, which contributes to improving the bonding force between the wood layer portion and the metal layer portion.
(3) When the wood layer portion and the metal layer portion are overlapped and pressed through an uncured adhesive, the portion located on the groove opening side of the groove portion is wider than the constriction forming portion, so The flow of the cured adhesive layer is concentrated from the groove opening side toward the constriction forming portion, and the effect of press-fitting the uncured adhesive into the portion located on the groove bottom side through the constriction forming portion is enhanced. As a result, the adhesive located in the portion located on the groove bottom side can be uniformly filled, and a better bonding state between the metal layer portion and the adhesive layer can be obtained.
For example, even if the thickness of the wood layer portion is increased for the purpose of improving heat insulation and texture, it is possible to satisfactorily secure the joint structure between the metal layer portion and the adhesive layer.

  The groove width at the opening position to the joint surface of the groove part can be made larger than the groove width at the minimum groove width position of the constriction forming part in the depth direction. As a result, the adhesive can smoothly flow from the groove opening into the portion, and the adhesive can be uniformly filled into the corners of the inside of the groove part that has been formed into a deformed cross section by the constriction forming part. Specifically, the portion located on the joint surface side of the minimum groove width position of the constriction forming portion of the groove portion is continuously widened from the minimum groove width position toward the opening to the joint surface. If the inner surface is formed into an inclined surface, the flow of the adhesive can be more smoothly concentrated toward the constriction forming portion, and particularly to the portion located on the groove bottom side of the constriction forming portion. The adhesive can be filled smoothly. The same effect can be achieved even if the inner surface of the portion is formed in a curved surface.

  On the other hand, the inner surface of the portion is stepped so that the portion located on the groove bottom side of the constriction forming portion of the groove portion gradually widens from the minimum groove width position toward the groove bottom. It can also be formed in a planar shape. By forming the stepped surface, the effect of preventing the adhesive filled in the portion located on the groove bottom side is further enhanced. On the other hand, the inner surface of the portion is inclined so that the portion located closer to the groove bottom side than the minimum groove width position of the constriction forming portion of the groove portion is continuously widened from the minimum groove width position toward the groove bottom. Can be formed. In this configuration, the height of the groove is reduced toward the bottom edge of the groove due to the inclined inner surface of the portion as described above, so that the adhesive that has flowed in is narrowed down to an acute angle toward the bottom edge. This increases the filling effect. Moreover, the adhesion area increase effect by becoming inclined surface shape can also be enjoyed.

  In addition, the portion of the groove portion that is located closer to the groove bottom than the minimum groove width position of the constricted portion is once widened from the minimum groove width position toward the groove bottom, and the groove width toward the groove bottom is increased through the width maximum position. The inner surface of the part can be a concave surface so as to shrink again. According to this configuration, the adhesive material that has flowed into the portion located on the groove bottom side wraps around the concave surface, and the adhesive material can be uniformly filled into the corners of the portion without excess or deficiency.

  Next, the top surface portion of the protruding portion in the groove width direction from the inner surface of the groove forming the constriction forming portion can be formed in an acute angle shape. By forming the top part of the protruding part in an acute angle, the dimension of the protruding part in the groove depth direction can be reduced, and even if the allowance for securing the groove depth on the metal layer side is small, the groove can be formed without any problem. Can do.

  On the other hand, the top surface portion of the protruding portion in the groove width direction from the inner surface of the groove forming the constriction forming portion can be formed in a convex curved surface shape. Thereby, the fluid resistance at the time of the adhesive material in a fluid state getting over the top surface portion of the protruding portion is reduced, and the adhesive material can be more smoothly filled into the groove bottom side through the constriction forming portion.

  Further, the top surface portion of the projecting portion in the groove width direction from the inner surface of the groove forming the constriction forming portion can be formed in a standing surface shape along the groove depth direction. As a result, the adhesive can be more smoothly filled on the groove bottom side.

  The metal layer part is preferably formed as an aluminum extruded member from the viewpoint of improving the productivity of the metal layer part. In this case, it is desirable to form the groove portion along the extrusion longitudinal direction of the aluminum extrusion member. Thereby, even if it is a groove part of the above shapes, this can be formed simultaneously at the time of extrusion molding, and production efficiency can be improved significantly. In this case, a plurality of groove portions can be formed in parallel to the joining surface of the metal layer portion in a direction orthogonal to the extrusion longitudinal direction. By forming a plurality of groove portions, the bonding force between the metal layer portion and the wood layer portion can be further increased.

The perspective view which shows the sash frame which concerns on one Embodiment of the composite structure building material of this invention. The fragmentary sectional perspective view which expands and shows the Q section of FIG. Sectional drawing which shows the principal part of FIG. Sectional drawing which shows the detail of the cross-sectional shape of a groove part with the effect | action and effect. Sectional drawing following FIG. Sectional drawing which shows the 1st modification of the cross-sectional shape of a groove part. Sectional drawing which shows the 2nd modification of the cross-sectional shape of a groove part. Sectional drawing which shows the 3rd modification of the cross-sectional shape of a groove part. Sectional drawing which shows the 4th modification of the cross-sectional shape of a groove part. Sectional drawing which shows the 5th modification of the cross-sectional shape of a groove part. Sectional drawing which shows the modification of the holding structure of a window glass. Sectional drawing which shows the example which joins a wood layer part to the metal layer part of an irregular cross section. Sectional drawing which shows the 6th modification of the cross-sectional shape of a groove part with the holding structure of a window glass. Sectional drawing which shows the holding structure of a pair glass.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments for carrying out the present invention will be described with reference to the accompanying drawings. FIG. 1 shows a sash frame constituting an embodiment of the composite structure building material of the present invention. The sash frame 1 has a frame main body 2 attached to a wall communication portion PH formed through a wall portion W of a building such as a residence in the thickness direction. The frame body 2 includes a wood layer portion 21 that forms one surface of the frame body 2 in the thickness direction, and a metal layer portion 22 that is joined to the back surface of the wood layer portion 21 via an adhesive layer. And have.

  The wood layer portion 21 is a hardwood board material, in particular oak, oak, zelkova, lawan, mahogany, teak, walnut, tamo, linden, merkaba, chestnut, maple, cherry, beech, cypress, camphor, etc. (particularly desirable) Nara, oak, tamo, lawan, chestnut, teak, walnut, maple) are used. In addition, the laminated material of these hardwood and the plywood material which applied the hardwood board | plate material only to the interior side outermost surface part can also be employ | adopted. The wood layer portion 21 can also be formed of a coniferous compression material such as cedar, cypress, pine, hiba or sawara, such as a cedar compression material.

  The adhesive layer 24 is made of a polymer material harder than the wood layer portion 21. Specifically, the adhesive layer 24 is formed of a reactive adhesive, and in the present embodiment, is composed of an epoxy adhesive. In addition, urethane resin adhesives may be adopted as reactive adhesives other than epoxy adhesives, ethylene-vinyl acetate resin hot melt adhesives, urethane resin reactive hot melt adhesives, polyamide resin hot melts. Hot melt adhesives such as adhesives and polyurethane resin hot melt adhesives may be used.

  FIG. 2 is an enlarged partial cross-sectional perspective view showing a corner Q of the frame body 2 of FIG. On the joint surface of the metal layer part 22 with the wood layer part 21, a groove part 30 filled with a part of the adhesive forming the adhesive layer 24 is formed. As further enlarged in FIG. 4, the inner side surface of the groove portion 30 has a groove width smaller than that of adjacent portions (30a, 30c) in the depth direction at a midpoint in the depth direction. It has a constriction forming part 30b. The top surface portion of the protruding portion in the groove width direction from the inner surface of the groove forming the constriction forming portion 30b is formed in an acute angle shape.

  When the metal layer part 22 and the wood layer part 21 are joined, for example, when a two-component reaction adhesive is used, the pot life is continued on the surface of the metal layer part 22 where the groove part 30 is formed (that is, uncured). The adhesive in the fluid state is applied while filling the groove portion 30, the wood layer portion 21 is overlapped, and the adhesive is cured while being pressed by a roll compressor or the like.

  As shown in FIG. 4, the wood layer portion 21 and the metal layer portion 22 are filled with a part of the adhesive material into the groove portion 30 formed on the joint surface on the metal layer portion 22 side by the adhesive material layer 24. Since it joins, the anchor effect between this metal layer part 22 and the adhesive material layer 24 is heightened. In addition, when a peeling force acts between the wood layer portion 21 and the metal layer portion 22, the adhesive filled in the portion located on the channel groove bottom side formed by the constriction forming portion 30b from the groove opening side, Since it cannot be separated from the groove opening without overcoming the convex constriction forming portion 30b, the coupling force between both portions can be further increased. Moreover, since the part located in the groove opening side of the groove part 30 is wider than the groove width in the constriction forming part 30b, the adhesion area is increased, and the bonding force between the wood layer part 21 and the metal layer part 22 is improved. Contributing.

  Further, as shown in FIG. 5, when the wood layer portion 21 and the metal layer portion 22 are overlapped and pressed through the uncured adhesive layer 24, the portion located on the groove opening side of the groove portion 30 is constricted. By being wider than the groove width at the portion 30b, the flow of the uncured adhesive layer 24 is concentrated from the groove opening side toward the constriction forming portion 30b, and is positioned on the groove bottom side through the constriction forming portion 30b. The effect of press-fitting uncured adhesive into the portion 30c to be enhanced is enhanced. As a result, the portion 30c located on the groove bottom side can be uniformly filled with the adhesive 24F, and a better bonding state between the metal layer portion 22 and the adhesive layer 24 can be obtained.

  The adhesive layer 24 is harder than the wood layer portion 21, and even if a strong shearing force acts between the metal layer portion 22 and the wood layer portion 21, the adhesive layer 24 is not easily broken. Further, even when adhesive peeling occurs on the metal layer portion 22 side, the adhesive layer 24 has higher rigidity than the wood layer portion 21, and therefore the adhesive filling the groove portion 30 including the constriction forming portion 30b (narrow portion). The elastic deformation is suppressed, and it is difficult to cause a problem that the filling adhesive material is separated from the constriction forming portion 30b. In addition, the wood layer portion 21 is made of hard wood that hardly undergoes drying shrinkage, and the difference in shrinkage between the metal layer portion 22 and the wood layer portion 21 is small, and the adhesive layer 24 is hard. It is difficult to cause peeling or the like due to the difference in shrinkage.

  As shown in FIG. 4, the groove width W <b> 1 at the opening position to the joint surface of the groove part 30 is larger than the groove width W <b> 2 at the minimum groove width position of the constriction forming part 30 b in the depth direction. Thereby, an adhesive material can be smoothly made to flow in from the groove opening to the opening side portion 30a of the groove. In FIG. 4, the portion 30a located closer to the joint surface than the minimum groove width position of the constriction forming portion 30b is continuously widened from the minimum groove width position toward the opening to the joint surface. The inner surface of 30a is formed in the shape of an inclined surface. The same effect can be achieved even if the inner side surface of the portion is formed in a curved surface shape (see, for example, FIG. 7).

  On the other hand, the portion 30c located on the groove bottom side from the minimum groove width position of the constriction forming portion 30b of the groove portion 30 has an inner side surface of the portion so as to continuously widen from the minimum groove width position toward the groove bottom. Is formed in an inclined surface shape. In this embodiment, the inner surface of the portion 30c has an inclined surface as described above, and the groove height of the portion is reduced toward the groove bottom side edge. Therefore, as shown in FIG. Since the material 24F is squeezed into an acute angle toward the groove bottom side edge, the filling effect is enhanced. Moreover, the adhesion area increase effect by becoming inclined surface shape can also be enjoyed.

  In the present embodiment, as shown in FIG. 1, the metal layer portion 22 has one surface formed by the wood layer portion 21 of the frame body 2 forming an indoor side (IS) surface of the building, and the metal layer portion. The other surface formed by 22 forms the outdoor side (OS) surface of the building. By forming the indoor side surface (that is, the interior surface) with the wood layer portion 21 and forming the outdoor side surface (that is, the exterior surface) with the metal layer portion 22, the interior surface side has a design effect due to real wood. The exterior surface side can be satisfactorily ensured weather resistance against wind and rain by the metal member.

  The metal layer portion 22 of the frame body 2 is formed as an aluminum extruded member, and the joint surface with the wood layer portion 21 is an extruded surface that is not polished. The groove part 30 is formed along the extrusion longitudinal direction of the aluminum extrusion member, and is open to the end surface of the member as shown in FIG. Such a groove portion 30 can be simultaneously formed on the member at the time of extrusion molding, and the production efficiency can be greatly improved. In this embodiment, the frame body 2 is a four-member assembly structure of a pair of members parallel to each other in the frame width direction and a pair of members parallel to each other in the frame height direction. Each member has an inclined surface whose end surface forms an angle of 45 degrees with the frame side, and the adjacent inclined end surfaces are attached to each other at right angles and fastened with bolts 23 to be integrated into a frame shape.

  As shown in FIG. 3, the metal layer portion 22 has a structure in which two metal plates 22a and 22b are stacked and fastened in the thickness direction (for example, by a bolt 25 or the like). The wood layer portion 21 is a single layer, and the joint surface of the metal layer portion 22 to the wood layer portion 21 is formed on the first metal plate 22a. Therefore, the groove part 30 is also formed in the 1st metal plate 22a, and, specifically, it is formed in multiple numbers in the direction orthogonal to the extrusion longitudinal direction of a member. The groove part 30 formed in the first metal plate 22a is open to both end faces of the member, and the air in the groove part 30 can be discharged from the end face of the groove part 30 when the uncured adhesive is filled.

  As shown in FIG. 1, a window glass 5 is held inside the frame body 2 of the sash frame 1. As shown in FIG. 3, on the inner peripheral edge side of the frame body 2, the wood layer portion 21 is joined to the metal layer portion 22 so as to extend inward from the inner edge of the metal layer portion 22. And the window glass 5 is hold | maintained in the form which touches the said glass holding surface 21h by making the surface located in the same side as a joining surface of the extension part 21e from the metal layer part 22 of the wood layer part 21 into the glass holding surface 21h. ing. Accordingly, the window glass 5 is in direct contact with the wood layer portion 21 so that the metal layer portion 22 is not exposed at the inner edge of the interior side of the sash. In the present embodiment, the window glass 5 supports the outer peripheral edge portion of the indoor surface on the glass holding surface 21h of the wood layer portion 21, while the frame-shaped seal made of rubber or the like along the outer peripheral edge portion of the outdoor surface. The member 6 is arranged, and the second metal plate 22b is extended inward from the side surface of the first metal plate 22a, and the frame-shaped sealing member 6 is interposed between the window glass 5 at the extended portion. A watertight structure is achieved by compressing in a sandwiched manner.

Hereinafter, various modifications of the present invention will be described.
As shown in FIG. 6, the top surface portion of the protruding portion in the groove width direction from the inner surface of the groove forming the constriction forming portion 30b can be formed in a convex curved surface shape. Thereby, the fluid resistance when the adhesive material in a fluidized state gets over the top surface portion of the constriction forming portion 30b (protruding portion) is reduced, and the portion 30c on the groove bottom side can be more smoothly filled with the adhesive material.

  Further, as shown in FIGS. 7, 8 and 9, the top surface portion of the projecting portion in the groove width direction from the inner surface of the groove forming the constriction forming portion 30b is formed as a vertical surface along the groove depth direction. Can be formed. In this configuration, since the top surfaces of the constriction forming portion 30b face each other in parallel, the uncured adhesive can flow more smoothly to the portion 30c on the groove bottom side.

  Next, as shown in FIG. 8, the portion 30 c located on the groove bottom side of the constriction forming portion 30 b of the groove portion 30 is gradually widened from the minimum groove width position toward the groove bottom. As described above, the inner surface of the portion 30c can be formed in a stepped surface.

  Further, as shown in FIG. 9, the portion 30 c of the groove portion 30 located closer to the groove bottom side than the minimum groove width position of the constriction forming portion 30 b is once widened from the minimum groove width position toward the groove bottom to maximize the width. The inner surface of the portion 30c can be a concave surface (concave curved surface in FIG. 9) so that the groove width is reduced again toward the groove bottom through the position. According to this configuration, the adhesive material that has flowed into the portion located on the groove bottom side wraps around the concave surface, and the filling uniformity of the adhesive material into the portion can be increased.

  FIG. 10 shows an example in which a constriction forming portion 30b having a convex curved surface is formed at a midpoint position in the depth direction of the inner surface of the groove portion 30 on the cut surface.

  As shown in FIG. 11, when the thickness of the frame body 2 is increased and the holding surface of the window glass 5 is formed in the middle of the metal layer portion 22 in the thickness direction, the holding of the inner side surface of the metal layer portion 22 is performed. It is also possible to cover the portion located on the side of the wood layer portion 21 with respect to the surface with the auxiliary wood portion 21t. In FIG. 11, the thickness of the first metal plate 22a is increased, the adhesive layer 24 is formed so as to wrap around the side surface on the window glass 5 side, and the auxiliary wood portion 21t is joined. The groove part 30 is also formed on the side surface of the metal layer part 22 (first metal plate 22a) that forms a joint surface with the auxiliary wood part 21t. On the other hand, the wood layer portion 21 and the auxiliary wood portion 21t can be formed inseparably by cutting or laminated material (in this case, the formation of the groove portion on the side surface of the metal layer portion 22 can be omitted). is there). In addition, the window glass 5 is supported by the inner edge of the first metal plate 22a and the auxiliary wood portion 21t at the outer peripheral edge of the indoor surface, and the outer peripheral edge on the outdoor side is covered by the inner edge of the second metal plate 22b. The gap with the glass 5 is filled / sealed with a caulking material 6c made of silicone rubber or the like.

  In addition, as shown in FIG. 12, the metal layer part 22 which consists of aluminum extrusion materials can also be formed as a hollow member or a deformed material, and joins the wood layer part 21 along the bent outer peripheral surface. Can do. The plate-like wood layer portion 21 can be divided and joined to the metal layer portion 22 as necessary for each shape.

  FIG. 13 shows an example in which the groove portion 30 is formed as a dovetail groove having a narrow portion in the opening in the sash frame structure similar to that in FIG.

  FIG. 14 shows an example in which the window glass is composed of the pair glass 5p in the sash frame structure similar to FIG.

  In addition, in this embodiment, although the application example to the sash frame 1 was demonstrated, the application object of the composite structure building material of this invention is not limited to this, It may apply to a curtain wall, a sliding door, a door, etc. Of course it is possible.

1 Sash frame (composite structure building material)
2 Frame body 5 Window glass 21 Wood layer part 22 Metal layer part 24 Adhesive layer 30 Groove part 30b Neck forming part

Claims (6)

A composite structure building material having a metal layer portion that forms the building material exterior side, a wood layer portion that forms the building material interior side, and an adhesive layer that bonds the metal layer portion and the wood layer portion,
A groove portion that is filled with a part of the adhesive that forms the adhesive layer is formed on the joint surface of the metal layer portion with the wood layer portion, and the inner surface of the groove portion has a groove depth direction. A narrow portion where the groove width is narrower than the portion adjacent to the groove bottom side is formed,
And the said composite material layer consists of a polymeric material harder than the said wood layer part, The composite structure building material characterized by the above-mentioned.   The composite structure building material according to claim 1, wherein the groove is formed as an ant groove.   2. The composite structure building material according to claim 1, wherein the groove portion has a constriction forming portion with a groove width smaller than a portion adjacent to the front and rear in the depth direction at an intermediate position in the depth direction.   The composite structure building material according to claim 3, wherein a groove width at an opening position of the groove portion to the joint surface is larger than a groove width at a minimum groove width position of the constriction forming portion in the depth direction.   The composite structure building material according to any one of claims 1 to 4, wherein the metal layer portion is formed as an aluminum extruded member, and the groove portion is formed along an extrusion longitudinal direction of the aluminum extruded member.   The composite structure building material according to claim 5, wherein a plurality of the groove portions are formed in parallel to the joining surface of the metal layer portion in a direction orthogonal to the extrusion longitudinal direction.

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