JP5687895B2 - Hollow plate materials for buildings and furniture - Google Patents

Description

  The present invention relates to a hollow plate material used for buildings and furniture.

  Conventionally, as plate materials, side plates, doors, and the like used for building floors, walls, ceilings and doors, and furniture, hollow plate materials, that is, hollow plate materials are used. The hollow plate material can be reduced in weight and cost, and a typical one is a flash structure. The flash structure is a structure in which a plywood is bonded to the front and back surfaces of a frame assembled with a heel and a reed.

  As other hollow plate materials, there are known those in which intermediate core materials are laminated and bonded, and the front plate and the back plate are bonded to the front and back surfaces, respectively (Patent Document 1). This intermediate core material has a comb-like cross section, that is, a groove formed parallel to one side of the front and back surfaces.

Special table 2009-513383 gazette

  However, in the case of a hollow plate having a flash structure, it cannot be said that the frame is easy to be assembled, and depending on the condition of the frame, it is easy to cause a deviation such as warping, bending, or twisting after assembly.

  Moreover, in the case of the hollow plate material described in Patent Document 1, the concave groove is formed only on one side of the front and back surfaces of the intermediate core material, and the fiber of wood is continuous on the opposite surface side. The internal stress of the wood is likely to act on the surface side, which tends to cause a warp, bend, twist or the like.

  The present invention has been created in consideration of the above circumstances, and an object thereof is to provide a hollow plate material that is easy to assemble and is less likely to be bent such as warping, bending, and twisting.

  The present invention includes a front plate, a back plate, and an intermediate core material, all of which are wood, the intermediate core material being thicker than the front plate and the back plate, a front plate on the surface of the intermediate core material, and a back plate on the back surface. It is assumed that it is a hollow plate material for buildings and furniture that is bonded together.

  In the invention according to claim 1, the intermediate core material includes a plurality of concave grooves in parallel on the front surface and the rear surface, and the concave grooves on the front surface and the concave grooves on the rear surface alternately in the parallel direction of the concave grooves. It is characterized by being formed.

  The intermediate core material may have both sides in the parallel direction of the concave grooves as flat surfaces without irregularities, but in order to facilitate positioning when arranging a plurality of hollow plate members in the parallel direction of the concave grooves, It is desirable to make it. That is, as in the invention according to claim 2, the intermediate core material is fitted with a fitting convex portion extending in parallel with the extending direction of the concave groove on one side of the both sides in the parallel direction of the concave grooves and the other side. It is to provide a fitting concave portion that fits into the convex portion.

  The number of intermediate cores laminated between the front plate and the back plate is not limited. However, in order to make the strength the same on the front side and the back side, it is desirable to do the following. That is, as in the invention according to claim 3, the intermediate core material is one sheet, and a plurality of concave grooves are provided in parallel on the front and back surfaces at equal intervals, and the thickness of the concave grooves in the groove depth direction is The thickness of the concave groove in the groove width direction is substantially the same.

  An example of increasing the thickness of the hollow plate is as follows. That is, as in the invention according to claim 4, two or more intermediate cores are provided opposite to each other in the stacking direction, and an intermediate plate made of wood thinner than the intermediate core is laminated and bonded between the opposed intermediate cores. It is that you are.

  Similarly, an example of increasing the thickness of the hollow plate is as follows. That is, as in the invention according to claim 5, two or more intermediate core materials are directly laminated and bonded.

  According to the invention described in claim 1, since the concave grooves are alternately formed on the front and back surfaces, the internal stress of the wood originally provided in the intermediate core material is dispersed from the front and back by the concave grooves, the warp of the intermediate core material, Bends, twists, etc. are less likely to occur. Therefore, the hollow plate material is reduced in weight by the concave groove and has a high quality without causing a deviation. Further, since the front and back plates are simply laminated and bonded to the front and back of the intermediate core material, it is easy to assemble.

  According to the invention described in claim 2, in addition to the effect of the invention described in claim 1, among the hollow plate members arranged in the parallel direction of the groove, the fitting recess on one side and the fitting on the other side Since it can position by fitting a convex part, it can expand easily in the parallel direction of a ditch | groove, and can enlarge a hollow board | plate material.

  According to the invention of claim 3, the intermediate core material laminated and bonded between the front plate and the back plate is a single piece, and by devising the thickness in the way of providing the groove and the location of the groove, Since the shape of the intermediate core is substantially the same as the front and back, the intermediate plate is less likely to be distorted.

  According to the invention of claim 4, since the intermediate core material is laminated and bonded to the front and back of the intermediate plate, a hollow plate material having a desired thickness can be easily manufactured.

  According to the invention of claim 5, since a plurality of intermediate core materials are laminated and bonded directly, a hollow plate material having a desired thickness can be easily manufactured.

It is a perspective view which shows the structure of the hollow board material for buildings and furniture in 1st embodiment of this invention. It is a perspective view which shows the structure of the hollow board material for buildings and furniture in 2nd embodiment of this invention. It is a perspective view which shows the structure of the hollow board material for buildings and furniture in 3rd embodiment of this invention. It is a perspective view which shows the structure of the hollow board material for buildings and furniture in 4th embodiment of this invention. It is a perspective view which shows the structure of the hollow board material for buildings and furniture in 5th embodiment of this invention. It is a perspective view which shows the structure of the hollow board material for buildings and furniture in 6th embodiment of this invention. (A)-(d) figure is a perspective view which shows the manufacturing method of the hollow board material for buildings and furniture in 1st embodiment of this invention.

  First, the structure of the hollow plate 10 for buildings and furniture in the first embodiment of the present invention will be described. FIG. 1 is a perspective view showing the main part of the structure. As shown in FIG. 1, the hollow plate 10 is a sandwich panel, and includes a front plate 20, a back plate 30, and an intermediate core material 40 as main raw materials. Is formed by laminating and bonding the back plates 30. Hereinafter, the main raw materials will be described in detail.

  The intermediate core member 40 is a flat plate having a thickness greater than that of the front plate 20 and the back plate 30. A large number of concave grooves 41 a and 41 b are formed in parallel and at regular intervals on the front and back surfaces of the intermediate core member 40. Moreover, the groove 41a on the front surface side and the groove 41b on the back surface side are alternately formed in the parallel direction of the grooves 41a and 41b (the horizontal width direction in the figure). Accordingly, the concave grooves 41a and 41b are alternately formed from the left side to the right side in the order of the back side, the front side, the back side, and the front side of the intermediate core material 40. In the illustrated example, the shape of the concave grooves 41a and 41b is a U-shape that opens upward or downward, and the internal space of each of the concave grooves 41a and 41b is rectangular in cross section. Further, in the intermediate core member 40, the thickness t1 of the concave grooves 41a and 41b in the groove depth direction and the thickness t2 of the concave grooves 41a and 41b in the groove width direction are substantially the same (dimensional difference within 1 mm). Therefore, the intermediate core has the same shape when viewed from the front side and from the back side. Further, an adhesive is applied to the front and back surfaces of the intermediate core member 40, that is, the regions without the concave grooves 41a and 41b, and the front plate 20 and the back plate 30 are bonded to each other.

  For the front plate 20 and the back plate 30, flat plates having a thickness smaller than that of the intermediate core material 40 are used.

  The intermediate core material 40, the front plate 20, and the back plate 30 are all wood, regardless of the tree species. However, it is desirable to use high-quality wood with a beautiful grain or particleboard with makeup for the front plate 20. In addition, it is desirable to use low quality wood such as thinned wood, small-diameter wood, edge wood, bent wood such as cedar, etc. It is desirable to use the above-described high-quality wood or low-quality wood for the back plate 30 according to the application.

Next, a method for manufacturing the hollow plate 10 will be described. FIG. 7 shows the manufacturing method step by step.
(1) A long rectangular intermediate core member 40 is prepared as shown in FIG.
(2) As shown in FIG. 7B, grooving machines 90 in which a large number of circular saws 91 are arranged in parallel at equal intervals in a horizontal row are arranged vertically. Then, while driving the upper and lower grooving machines 90, the intermediate core material 40 is relatively moved in the longitudinal direction (vertical width direction), so that the concave grooves 41a and 41b are vertically formed on the front and back surfaces of the intermediate core material 40. It is formed along the width direction.
(3) As shown in FIG. 7C, an adhesive is applied to the front and back surfaces of the intermediate core material 40.
(4) As shown in FIG. 7 (d), an intermediate core member 40 and a front plate 20 and a back plate 30 made of a rectangle having the same vertical and horizontal width are prepared, and the front plate 20 and the back plate 30 are adhesives. Are bonded to each other by overlapping each other and pressing in the thickness direction. That's it.

Then, the hollow board | plate material 10 for buildings and furniture in 2nd embodiment of this invention is demonstrated centering on a different part from 1st embodiment about the structure. FIG. 2 is a perspective view showing the main part of the structure. As shown in FIG. 2, in the hollow plate 10 of the second embodiment, a fitting convex portion 42 is formed so as to protrude laterally on one side (right side surface in the illustrated example) of both side surfaces of the intermediate core material 40, and A fitting recess 43 is formed on the left side surface (in the example shown in the drawing) so as to be laterally recessed at a position corresponding to the fitting projection 42. The fitting convex portion 42 and the fitting concave portion 43 have shapes that fit each other, and are formed to extend in parallel with the extending direction of the concave grooves 41a and 41b. The fitting convex part 42 and the fitting concave part 43 can be formed in the same manner as the cutting process by the grooving machine 90 described above.
In addition, it is necessary to ensure intensity | strength on the both sides of the horizontal width direction of the intermediate core material 40 on the relationship which provides the fitting convex part 42 or the fitting recessed part 43. FIG. Therefore, the thickness in the horizontal width direction on both side portions in the horizontal width direction of the intermediate core member 40 is formed to be thicker than other portions. Moreover, in the illustrated example, the thickness in the width direction of the right side portion is formed in a stepped shape with a thicker lower portion than the upper portion, and conversely, the thickness in the width direction of the left side portion is a stepped shape in which the upper portion is thicker than the lower portion. Is formed. The left and right side portions of the step shape are shaped to abut each other like a phase-separated joint.

  By providing the fitting convex part 42 and the fitting concave part 43 in this way, it is easy to position the plurality of hollow plate members 10, 10,. That is, the two hollow plate members 10 and 10 can be positioned by fitting one fitting concave portion 43 and the other fitting convex portion 42 among the hollow plate members 10 arranged in the width direction.

  Next, the building and furniture hollow plate member 10 according to the third embodiment of the present invention will be described with a focus on the structure different from the first embodiment. FIG. 3 shows a cross-sectional view of the structure. As shown in FIG. 3, in the third embodiment, the front plate 20 and the back plate 30 that are narrower in width than the intermediate core member 40 are bonded in parallel to the front and back surfaces of the intermediate core member 40. Further, the lateral width end portions of the front plate 20 and the back plate 30 are disposed and bonded to the wood portions on the front and back surfaces of the intermediate core member 40, that is, avoiding the concave grooves 41a and 41b. Moreover, the end portion of the front plate 20 and the end portion of the back plate 30 are bonded to the intermediate core member 40 by shifting the position in the horizontal width direction instead of the front and back symmetrical positions.

  By using the front plate 20 and the back plate 30 having a narrow width in this way, it is easy to cut wood. Further, the lateral width end portions of the front plate 20 and the back plate 30 are securely bonded to the wood portion of the intermediate core material 40, and the end portions of the front plate 20 and the back plate 30 are shifted by shifting the position in the lateral width direction. The strength reduction of the hollow plate 10 is prevented as much as possible.

  Next, the hollow plate material 10 for buildings and furniture in the fourth embodiment of the present invention will be described with a focus on the structure different from the third embodiment. FIG. 4 shows a cross-sectional view of the structure. In the fourth embodiment, a plurality of (two in the illustrated example) intermediate core members 40 are arranged to face each other in the lateral width direction, and the side surfaces in the lateral width direction of adjacent intermediate core members 40 are directly bonded with an adhesive. Yes. In addition, the lateral width end portions of the front plate 20 and the back plate 30 are disposed and bonded to a wood portion that is separated from the side surface in the lateral width direction of the adjacent intermediate core material 40 to the left side or the right side. 40 is integrated.

  By bonding in this way, the hollow plate 10 having a large lateral width can be formed.

Next, the hollow plate material 10 for buildings and furniture in the fifth embodiment of the present invention will be described with a focus on the structure different from the first embodiment. FIG. 5 shows a sectional view of the structure. In the fifth embodiment, a plurality of (two in the illustrated example) intermediate core members 40, 40 are provided facing each other in the stacking direction (thickness direction), and the intermediate plate 50 is disposed between the opposed intermediate core members 40, 40. Are laminated and bonded. In the illustrated example, the front plate 20 is laminated on the surface of the upper intermediate core member 40, and the back plate 30 is bonded to the back surface of the lower intermediate core member 40.
The above-described intermediate plate 50 is also a timber, a flat plate having a thickness that is thinner than the intermediate core material 40 and substantially the same as that of the front plate 20 and the back plate 30.

  Thus, by stacking and bonding the intermediate core material 40 on the front and back surfaces of the intermediate plate 50, a thicker hollow plate material 10 can be formed.

  Next, the building and furniture hollow plate member 10 according to the sixth embodiment of the present invention will be described with a focus on the structure different from the first embodiment. FIG. 6 shows a cross-sectional view of the structure. In the sixth embodiment, a plurality of (two in the illustrated example) intermediate core members 40 are directly laminated and bonded. In the illustrated example, the front plate 20 is laminated on the surface of the upper intermediate core member 40, and the back plate 30 is bonded to the back surface of the lower intermediate core member 40.

  The present invention is not limited to the above embodiment. For example, the shape and size of the grooves 41a and 41b, and the intervals between the front and back grooves 41a and 41b provided in parallel can be changed as appropriate. Further, the shapes of the front plate 20, the back plate 30, and the intermediate core member 40 can be changed as appropriate.

  The hollow plate 10 described above is less likely to be distorted such as warping, bending, twisting, etc., so that floors, walls, ceilings and doors of buildings such as apartments and detached houses, plates used for furniture, side plates and doors, etc. Can be used.

10 hollow plate material 20 top plate 30 back plate 40 intermediate core material 41a concave groove 41b concave groove t1 thickness t2 thickness 42 fitting convex portion 43 fitting concave portion 50 intermediate plate 90 grooving machine 91 circular saw

Claims (5)

All are provided with a front plate, a back plate and an intermediate core made of wood, the intermediate core is made thicker than the front plate and the back plate, and the front plate is laminated on the surface of the intermediate core and the back plate is laminated on the back and bonded. In certain building and furniture hollow plate materials,
The intermediate core material is provided with a plurality of concave grooves in parallel on the front surface and the back surface, and the concave grooves on the front surface and the concave grooves on the back surface are alternately formed in the parallel direction of the concave grooves. Hollow plate materials for buildings and furniture.   The intermediate core member has a fitting convex portion extending in parallel with the extending direction of the concave groove on one of both side surfaces in the parallel direction of the concave grooves, and a fitting concave portion having a shape that fits the fitting convex portion on the other side. The hollow plate material for buildings and furniture according to claim 1.   The intermediate core material is a single piece, and has a plurality of concave grooves on the front and back surfaces in parallel and at regular intervals, and the thickness of the concave grooves in the depth direction and the thickness of the concave grooves in the groove width direction are almost equal. The hollow plate material for buildings and furniture according to claim 1 or 2, wherein the hollow plate materials are formed in the same manner.   The intermediate core material is provided with two or more intermediate core materials facing each other in the stacking direction, and an intermediate plate made of wood thinner than the intermediate core material is laminated and bonded between the facing intermediate core materials. Hollow plate materials for buildings and furniture as described.   The hollow plate material for buildings and furniture according to claim 1 or 2, wherein two or more intermediate core materials are directly laminated and bonded.

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