Wooden joinery materials

Abstract

To provide wooden joinery materials that can improve the fixing strength of parts secured with screws. [Solution] A wooden joinery material used in joinery, comprising interior members 43, 44, and 45 which are wooden members, and a metal backing plate 70 provided inside the interior members 43, 44, and 45 to receive screws 66 that are screwed into the interior members 43, 44, and 45. Since the screws 66 are screwed into the backing plate 70, the pull-out force of the screws 66 can be increased, and the fixing strength of the parts fixed by the screws 66 can be improved.

Description

Technical Field

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[0001] The present invention relates to wooden building materials used for frames and frameworks.

Background Art

[0002] Patent Document 1 discloses a wooden window having a wooden frame and a wooden sash. In this wooden window, in order to connect the wooden sash to the wooden frame so as to be openable and closable, a hinge fitting is fixed to the frame and the sash using nails.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In Patent Document 1, in order to ensure the fixing force by nails, relatively long nails are used. Therefore, it is necessary to increase the size of the cross section of wooden building materials such as wooden frames and sashes, that is, the expected dimensions and found dimensions of the frames and sashes. Even when screws are used instead of nails, in order to improve the pulling-out force of the screws, it is necessary to make the screws longer, and therefore, it is also necessary to increase the cross-sectional size of the wooden building materials. On the other hand, in general houses, since the wall thickness dimension is standardized, there are also restrictions on increasing the cross-sectional size of the frames and sashes. In addition, when improving the heat insulation performance of a wooden window, when increasing the thickness dimension and the number of panels such as double-pane glass, in order to suppress the expected dimensions of the shoji, it is required to reduce the cross-sectional size of the wooden building materials. When the cross-sectional size of the wooden building materials becomes small, when various parts such as hinges are fixed with screws, there is a problem that the pulling-out force of the screws decreases and it becomes difficult to ensure the fixing strength of the various parts. Therefore, even when the cross-sectional size of the wooden joinery material is small, there is a need for wooden joinery material that can improve the pull-out force of screws and thus improve the fixing strength of the parts that are fastened with screws.

[0005] The object of the present invention is to provide a wooden joinery material that can improve the fixing strength of parts that are fastened with screws. [Means for solving the problem]

[0006] The present invention relates to a wooden joinery material used in joinery, characterized by comprising a wooden member and a metal backing plate provided inside the wooden member to receive a screw that is screwed into the wooden member. [Effects of the Invention]

[0007] According to the present invention, it is possible to provide a wooden joinery material that can improve the fixing strength of parts that are fixed with screws. [Brief explanation of the drawing]

[0008] [Figure 1] This is a longitudinal cross-sectional view showing a sliding window of the first embodiment. [Figure 2] This is a cross-sectional view showing a sliding window of the first embodiment. [Figure 3] This diagram shows the manufacturing process for the interior component of the door frame according to the first embodiment. [Figure 4] This is a cross-sectional view showing the door frame of the second embodiment. [Figure 5] This diagram shows the manufacturing process for the interior component of the door frame according to the second embodiment. [Modes for carrying out the invention]

[0009] The embodiment is a sliding window 1 comprising a window frame 10, an outer sash 20A, and an inner sash 20B, as shown in Figures 1 and 2. Figure 1 is a vertical cross-sectional view showing the midpoint in the left-right direction of the window frame 10, outer sash 20A, and inner sash 20B, and Figure 2 is a horizontal cross-sectional view showing the midpoint in the up-down direction of the window frame 10, outer sash 20A, and inner sash 20B. Note that the left-right direction is the left-right direction in the interior view of the sliding window 1, and is also the sliding direction of the outer sash 20A and inner sash 20B.

[0010] [window frame] The window frame 10 is constructed by framing an upper frame 11, a lower frame 12, and left and right vertical frames 13 and 14. As shown in Figure 1, the upper frame 11 and the lower frame 12 are constructed by connecting aluminum exterior members 111 and 121 and interior members 112 and 122 with synthetic resin insulation members 113 and 123. The exterior members 111, 121 and the interior members 112, 122 are each formed with exterior rails 115, 125 for guiding the exterior sash 20A and interior rails 116, 126 for guiding the interior sash 20B, respectively. Cover materials 117 and 118 made of synthetic resin are attached to the lower surface of the upper frame 11. Cover material 117 is attached across the outer rail 115 and the inner rail 116, and is installed to cover the indoor exposed surface of the upper frame 11 between the outer rail 115 and the inner rail 116. Cover material 118 is installed to cover the indoor exposed surface of the interior component 112. A windbreak plate 119 is attached to cover material 117. Cover materials 127 and 128 made of synthetic resin are attached to the upper surface of the lower frame 12. Cover material 127 is attached to cover the indoor exposed surface between the outer rail 125 and the inner rail 126 of the lower frame 12. Cover material 128 is attached to cover the indoor exposed surface of the interior component 122.

[0011] As shown in Figure 2, the vertical frames 13 and 14 are made of aluminum profiles. The vertical frame 13 has a protruding piece 135 that abuts against the airtight material of the outer sash 20A, and the vertical frame 14 has a protruding piece 145 that abuts against the airtight material of the inner sash 20B. The vertical frame 13 is fitted with synthetic resin cover materials 137 and 138. Cover material 137 is fitted so as to cover the indoor exposed surface of the vertical frame 13 from the protruding piece 135 of the vertical frame 13 to the indoor end of the vertical frame 13. Cover material 138 is fitted to the surface of cover material 137. A synthetic resin cover material 147 is attached to the vertical frame 14. The cover material 147 is attached so as to cover the indoor exposed surface of the vertical frame 14 from the protruding piece 145 of the vertical frame 14 to the indoor end of the vertical frame 14.

[0012] [Shoji] Next, the outer sliding door 20A and the inner sliding door 20B will be described. The outer sliding door 20A comprises an upper frame 21 and a lower frame 22, a door edge frame 23 and an outer meeting frame 24, and a panel 26 held by these. Similarly, the inner sliding door 20B comprises an upper frame 21 and a lower frame 22, a door edge frame 23 and an inner meeting frame 25, and a panel 26 held by these. Since the outer sliding door 20A and the inner sliding door 20B have the same structure for all frames except the outer meeting stile 24 and the inner meeting stile 25, they will be described using the same reference numerals.

[0013] As shown in Figure 1, the upper frame 21 comprises an exterior member 31 made of aluminum profile and an interior member 41 made of wood. The outdoor member 31 comprises a roughly plate-shaped outdoor surface portion 311 that is elongated in the left-right direction, and a retaining piece portion 312, an engaging piece portion 313, and a fixing piece portion 314 that extend from the indoor surface of the outdoor surface portion 311. The retaining piece 312 extends from the upper end of the exterior surface 311 toward the interior and holds the airtight material that abuts against the exterior rail 115 and cover material 117. Each engaging piece 313 is formed in an L-shape in cross-section and engages with the reinforcing material 51, etc., which will be described later. The fixing piece 314 is fixed to the interior member 41 with screws 61.

[0014] As shown in FIG. 1, the interior member 41 includes a main body portion 411, a guide piece portion 412 extending upward from the main body portion 411, and a holding piece portion 413 extending downward from the main body portion 411. The main body portion 411 is a main structural portion with a larger expected dimension compared to the guide piece portion 412 and the holding piece portion 413, and its outer surface of the chamber abuts against the two engaging piece portions 313. A fixing piece portion 314 abuts against the upper surface of the main body portion 411 and is fixed with a screw 61. Further, a reinforcing member 51, which will be described later, is fixed with a screw 61 on the lower surface of the main body portion 411, that is, on the panel facing surface facing the gasket 27 holding the panel 26. The interior member 41 may be made of solid wood, but it is made of LVL (laminated veneer lumber) or glued laminated timber that can stabilize strength and quality. In this embodiment, the interior member 41 is made of LVL formed by laminating and bonding cut veneers.

[0015] As shown in FIG. 1, the lower frame 22 includes an exterior member 32 made of aluminum profile and an interior member 42 made of wooden member. The exterior member 32 has the same configuration as the exterior member 31, and includes a substantially plate-shaped exterior surface portion 321 elongated along the left-right direction, a holding piece portion 322, an engaging piece portion 323, and a fixing piece portion 324. The holding piece portion 322 extends from the lower end of the exterior surface portion 321 to the indoor side and holds an airtight material that abuts against the outer rail 125 and the inner rail 126. Each engaging piece portion 323 is formed in an L-shaped cross section. The fixing piece portion 324 is continuously provided from the holding piece portion 322 and is formed in a substantially U-shaped cross section, and is fixed to the lower surface of the interior member 42 with a screw 61.

[0016] As shown in Fig. 1, the interior member 42 is also made of LVL, similar to the interior member 41. The interior member 42 includes a main body portion 421, a guide piece portion 422 protruding downward from the main body portion 421, and a holding piece portion 423 extending upward from the main body portion 421. The main body portion 421 is a portion with a larger expected dimension compared to the guide piece portion 422 and the holding piece portion 423, and its outer surface of the room abuts against each engaging piece portion 323. The fixing piece portion 324 abuts against the lower surface of the main body portion 421 and is fixed with a screw 61. A reinforcing member 51 is fixed to the upper surface of the main body portion 421 with a screw 61. The reinforcing member 51 is composed of a metal plate with a substantially L-shaped cross section, including a fixing portion 511 fixed to the panel-facing surface of the main body portion 421 with a screw , a clamping portion 512 extending downward (toward the outer periphery of the shoji) from the outdoor-side end of the fixing portion 511, and a reinforcing portion 513 extending upward (toward the inner periphery of the shoji) from the indoor-side end of the fixing portion 511. As the material of the metal plate constituting the reinforcing member 51, for example, aluminum, steel, stainless steel, etc. can be used. The clamping portion 512 is a portion that clamps the engaging piece portion 323 of the outdoor member 32 between it and the main body portion 421. The reinforcing portion 513 is arranged along the outer surface of the holding piece portion 423 and is adhered to the holding piece portion 423 with an adhesive or double-sided tape. By arranging and adhering the metal reinforcing portion 513 to the outer surface of the holding piece portion 423, the holding piece portion 423 is reinforced. Note that the reinforcing members 51 attached to the other interior members 41, 43, 44 are also the same parts.

[0017] As shown in Fig. 2, the door head frame 23 includes an outdoor member 33 made of aluminum profile and an interior member 43 made of wooden member. The outdoor member 33 has the same configuration as the outdoor members 31 and 32, and includes a substantially plate-shaped outdoor surface portion 331 that is elongated along the vertical direction, a holding piece portion 332, an engaging piece portion 333, and a fixing piece portion 334. The holding piece portion 332 extends from the edge on the outer peripheral side (door head side) of the outdoor surface portion 331 toward the indoor side and holds an airtight material that abuts against the protruding pieces 135 and 145. Each engaging piece portion 333 is formed in an L-shaped cross section. The fixing piece portion 334 extends from the holding piece portion 332 and is fixed to the side surface on the door head side of the interior member 43 with a screw 61.

[0018] The interior member 43, like the interior members 41 and 42, is made of LVL (Laminated Veneer Lumber) formed by laminating and bonding cut veneers. The interior member 43 comprises a main body portion 431, a guide piece portion 432 protruding from the main body portion 431 toward the outer circumference, i.e., toward the vertical frames 13 and 14, and a retaining piece portion 433 extending toward the inner circumference from the main body portion 431. The main body portion 431 is a portion with a larger depth dimension compared to the guide piece portion 432 and the retaining piece portion 433, and its exterior surface abuts against the engaging piece portion 333. A fixing piece portion 334 abuts against the outer circumference surface of the main body portion 431, i.e., the surface facing the vertical frames 13 and 14, and is fixed with a screw 61. A reinforcing member 51 is fixed to the inner circumference surface of the main body portion 431 with a screw 61.

[0019] As shown in Figure 2, the exterior meeting stile 24 comprises an exterior member 34 made of aluminum profile and an interior member 44 made of wood. The outdoor member 34 is formed in a substantially L-shape overall and is a long member oriented in the vertical direction, comprising an outdoor surface portion 341, a side covering portion 342 extending inward from the end of the outdoor surface portion 341, an engaging piece portion 343, a fixing piece portion 344, and a smoke return portion extending from the fixing piece portion 344. The engaging piece 343 extends from the interior surface of the exterior surface 341 and is formed in a substantially L-shape in cross-section. The fixing piece 344 extends from the interior end of the side covering 342 and is arranged diagonally. The smoke return portion has a protruding piece that engages with the smoke return portion of the interior meeting frame 25, and an airtight material that abuts against the exterior member 35 of the interior meeting frame 25 is attached to the base end of the protruding piece.

[0020] The interior member 44, like the interior members 41, 42, and 43, is made of LVL (Laminated Veneer Lumber) formed by laminating and bonding cut veneers. The interior member 44 comprises a main body portion 441 and a retaining piece portion 443 extending from the main body portion 441 toward the door edge. The main body portion 441 is a portion with a larger depth dimension than the retaining piece portion 443, and its exterior surface abuts against the engaging piece portion 343. The corners of the depth surface and interior surface of the main body portion 441 are inclined surfaces that intersect in the depth direction and the left-right direction, and the fixing piece portion 344 abuts against these inclined surfaces and is fixed with screws 61. In addition, a cover material 349 is attached to the exterior member 34 to conceal the screws 61 that fix the fixing piece portion 344. A reinforcing material 51 is fixed to the inner circumferential surface of the main body portion 441 with screws 61. Furthermore, as shown in Figure 2, a crescent lock receiver 37 is fixed to the interior surface of the interior component 44 with screws 66.

[0021] As shown in Figure 2, the interior meeting stile 25 comprises an exterior member 35 made of aluminum profile and an interior member 45 made of wood. The outdoor member 35 is formed in a substantially T-shape in cross-section and comprises an outdoor surface portion fixed to the outdoor surface of the indoor member 45 with screws 66, an extended piece portion extending inward from the outdoor surface portion, and a smoke return portion extending from the outdoor surface of the outdoor surface portion.

[0022] The interior component 45, like the interior components 41, 42, 43, and 44, is made of LVL (Laminated Veneer Lumber) formed by laminating and bonding cut veneers. The interior component 45 comprises a main body portion 451 and a retaining piece portion 453 extending from the main body portion 451 toward the door edge. The main body portion 451 is a portion with a larger depth dimension than the retaining piece portion 453, and the exterior component 35 is fixed to its exterior surface with screws 66. A reinforcing material 52 is fixed to the inner circumferential surface of the main body portion 451 with screws 61. The extended piece portion of the exterior component 35 and the reinforcing material 52 are spaced apart in the depth direction. This improves the thermal insulation performance compared to when the exterior component 35 and the reinforcing material 52 are in contact. A crescent lock 38 is also fixed to the depth surface of the main body portion 451 with screws 64.

[0023] To achieve the above configuration, as shown in Figure 1, the upper frame 21 has a groove between the upper end of the outdoor member 31 and the guide piece 412 of the indoor member 41, in which the outer rail 115 and the inner rail 116 are arranged. The upper frame 21 also has a glass retaining groove between the lower end of the outdoor surface portion 311 of the outdoor member 31 and the retaining piece 413 of the indoor member 41, in which the panel 26 is arranged via a gasket 27. In addition, upper sliding pieces (not shown) are provided at both the left and right ends of the upper frame 21. In the lower frame 22, a groove is formed between the lower end of the interior member 42 and the guide piece 422 of the interior member 42, in which the outer rail 125 and the inner rail 126 are positioned. In addition, in the lower frame 22, a glass retaining groove is formed between the upper end of the exterior surface 321 of the exterior member 32 and the retaining piece 423 of the interior member 42, in which the panel 26 is positioned via a gasket 27. Furthermore, rollers 280 and lower sliding pieces (not shown) are provided at both the left and right ends of the lower frame 22.

[0024] As shown in Figure 2, the door frame 23 has grooves formed between the leading edges of the vertical frames 13 and 14 of the exterior member 33 and the guide piece 432 of the interior member 43, in which protruding pieces 135 and 145 are positioned. The door frame 23 also has a glass retaining groove formed between the inner circumference end of the exterior surface 331 of the exterior member 33 and the retaining piece 433 of the interior member 43, in which a panel 26 is positioned via a gasket 27. A handle 75 for opening and closing the outer sash 20A and the inner sash 20B is attached to the interior surface of the door frame 23 with screws 66. A stopper 76 is attached to the interior surface of the bottom frame 22 to prevent the handle 75 of the outer sash 20A from colliding with the crescent 38 of the inner sash 20B. In the exterior meeting stile 24, a glass retaining groove is formed between the inner circumferential end of the exterior surface portion 341 of the exterior member 34 and the retaining piece portion 443 of the interior member 44, with the panel 26 positioned via a gasket 27. In the interior meeting stile 25, a glass retaining groove is formed between the inner circumferential end of the exterior member 35 and the retaining piece portion 453 of the interior member 45, with the panel 26 positioned via a gasket 27.

[0025] In the upper frame 21, lower frame 22, door edge frame 23, outer meeting frame 24, and inner meeting frame 25, the wooden interior members 41, 42, 43, 44, and 45, which occupy a large area in the cross section perpendicular to the longitudinal direction, function as the main structural members. The main structural members are the members that ensure strength. In addition, the aluminum exterior members 31, 32, 33, 34, and 35 function as cover materials that prevent the interior members 41, 42, 43, 44, and 45 from being exposed to the outside. The panel 26 in this embodiment is made of double-glazed glass, but triple-glazed glass or the like may also be used. Reinforcement members 51 are attached to the glass retaining grooves of the upper frame 21, lower frame 22, door edge frame 23, and outer meeting frame 24. In addition, the fixing piece of the exterior member 35 is placed in the glass retaining groove of the inner meeting frame 25, and reinforcement members 52 are attached with screws 61. As explained above, the wooden interior components 41, 42, 43, 44, and 45, which have superior thermal insulation properties compared to aluminum profiles, occupy a large area, improving the thermal insulation performance of the upper frame 21, lower frame 22, door edge frame 23, and outer meeting frame 24. Furthermore, the double-glazed glass also improves the thermal insulation performance of the panel 26, so that the outer sash 20A and inner sash 20B function as highly insulated sashes.

[0026] [LVL interior components] Next, we will describe the interior members 41, 42, 43, 44, and 45, which are wooden components of the wooden joinery. As mentioned above, the interior members 41, 42, 43, 44, and 45 are made of LVL (laminated veneer lumber), which is a type of wooden component. The interior members 41 and 42 of the upper frame 21 and lower frame 22 are made of LVL with veneers laminated in the vertical direction, which is the visible direction of the upper frame 21 and lower frame 22. The interior members 43, 44, and 45 of the door frame 23, outer meeting frame 24, and inner meeting frame 25 are made of LVL with veneers laminated in the horizontal direction, which is the visible direction of these components. In LVL (Laminated Veneer Lumber), since veneers are laminated and glued together, if a screw is driven in the direction of the veneer lamination, the screw penetrates multiple veneers, increasing the pull-out force. However, if a screw is driven in a direction perpendicular to the direction of the veneer lamination, the pull-out force decreases. In the upper frame 21, lower frame 22, door edge frame 23, outer meeting frame 24, and inner meeting frame 25, the screws 61 that fix the fixing pieces 314, 324, 334 and reinforcing materials 51, 52 to the visible surfaces of the interior members 41, 42, 43, 44, and 45 are screwed in the visible direction, which is the lamination direction of the veneer, so a predetermined pull-out force is obtained. On the other hand, the screws 66 that attach the handle 75 and crescent receiver 37 to the interior surface of the door edge frame 23 and outer meeting frame 24, and the screws 66 that attach the exterior member 35 to the exterior surface of the inner meeting frame 25 are screwed in the visible direction, which is perpendicular to the lamination direction of the veneer, so the pull-out force is reduced. For this reason, the interior members 43, 44, and 45 have backing plates 70 built in, and the pull-out force is increased by screwing the screws 66 into the backing plates 70.

[0027] Next, the manufacturing method of the interior members 43, 44, and 45, in which the backing plate 70 is embedded, will be explained with reference to Figure 3. First, as shown in Figure 3(A), the first laminate 80A and the second laminate 80B are manufactured by laminating veneers 81, which are processed board materials for lamination, while bonding them together. In the example in Figure 3(A), the number of veneers 81 constituting the first laminate 80A is greater than that of the second laminate 80B. Also, the first laminate 80A and the second laminate 80B are elongated members in the direction perpendicular to the plane of the paper in Figure 3(A). Next, two backing plate insertion grooves 82 are machined into the first laminate 80A. Each backing plate insertion groove 82 is formed in the first laminate 80A in the lamination direction of the single sheet 81 from the bonding surface 83 that is bonded to the second laminate 80B. The backing plate insertion grooves 82 are formed along the entire length in the longitudinal direction of the first laminate 80A.

[0028] Then, a metal backing plate 70 is inserted into the backing plate insertion groove 82, and the adhesive surfaces 83 of the first laminate 80A and the second laminate 80B are bonded together to produce a prismatic laminate 80 as shown in Figure 3(B). Next, as shown in Figure 3(C), the laminate 80 is cut into a predetermined shape to manufacture the interior member 43. This produces an interior member 43 having a main body 431, a guide piece 432, a retaining piece 433, and two backing plates 70 built inside. Interior members 44 and 45, which also have backing plates 70 built inside, are manufactured using the same procedure as interior member 43. Thus, the wooden joinery material is composed of the wooden interior members 43, 44, and 45 and the metal backing plates 70. In the interior members 43, 44, and 45, the backing plate 70 is located approximately midway in the visible direction and is arranged parallel to the exterior and interior surfaces. Furthermore, the length from the exterior and interior surfaces to each backing plate 70 is set to the length reached by the screws 66 that are screwed in from the exterior and interior surfaces.

[0029] [Effects of the First Embodiment] Since the interior components 43, 44, and 45 have a metal backing plate 70 built in, screws 66 perpendicular to the lamination direction of the single sheet 81 can be screwed into the backing plate 70. This improves the pull-out force of the screws 66 and improves the fixing force of the components by the screws 66. Therefore, the depth dimensions of the interior components 43, 44, and 45 can be suppressed, and even if the thickness of the panel 26 is increased by increasing the glass thickness or the number of glass panes to improve thermal insulation performance, the increase in the depth dimensions of the door frame 23, outer meeting frame 24, and inner meeting frame 25 can be suppressed, and the depth dimensions of the outer sash 20A and inner sash 20B can be suppressed, so the depth dimensions of the window frame 10 can also be suppressed, and the fit to the wall on which the sliding window 1 is installed can be improved. In addition, since the cross-section of the interior components 43, 44, and 45 can be made smaller, cost reduction can also be achieved.

[0030] Furthermore, since the interior members 43, 44, and 45 have a backing plate 70 built into them along their entire length, the interior members 43, 44, and 45 can be reinforced with the backing plate 70, which suppresses warping of the interior members 43, 44, and 45 and stabilizes their quality. As a result, high-quality wooden joinery materials can be provided. Since the interior components 43, 44, and 45 of the wooden joinery material have two backing plates 70 built in, the strength of the wooden joinery material can be improved compared to when only one backing plate is built in, and the effect of suppressing warping can also be enhanced. In addition, since the two backing plates 70 are arranged along the exterior and interior surfaces, components can be attached to either the exterior or interior surface.

[0031] [Second Embodiment] Next, the second embodiment will be described with reference to Figures 4 and 5, using the door frame 23 as an example. In the second embodiment, as shown in Figure 4, the backing plate 70 is arranged in a direction perpendicular to the lamination direction of the single plates 81, which is different from the first embodiment, but the other configurations are the same. For this reason, the same reference numerals are used for components that are the same as in the first embodiment, and their descriptions are omitted. As shown in Figure 4, a backing plate 70 is positioned on the interior member 43 along the depth direction perpendicular to the lamination direction of the single sheet 81. Screws 61 for fixing the fixing piece 334 and reinforcing material 51 are screwed into this backing plate 70 from the visible direction. Although not shown in the figures, in other frames as well, by positioning the backing plate 70 along the depth direction, screws 61 for fixing the exterior members 31, 32, 33, 34, 35 and reinforcing materials 51, 52 can be screwed into the backing plate 70.

[0032] Next, the manufacturing method of the interior member 43 of the second embodiment will be described with reference to Figure 5. First, as shown in Figure 5(A), the first laminate 80A, the second laminate 80B, and the third laminate 80C are manufactured by laminating single sheets 81 while bonding them together. The first laminate 80A, the second laminate 80B, and the third laminate 80C are elongated members in the direction perpendicular to the plane of the paper in Figure 5(A). Next, two backing plate insertion grooves 82B are machined into the second laminate 80B. Each backing plate insertion groove 82B is formed in the second laminate 80B on the bonding surface 83 that is bonded to the first laminate 80A and the third laminate 80C, along a direction perpendicular to the lamination direction of the single sheets 81. The backing plate insertion grooves 82B are formed along the entire length in the longitudinal direction of the second laminate 80B.

[0033] Then, a metal backing plate 70 is inserted into the backing plate insertion groove 82B, and the adhesive surfaces 83 of the second laminate 80B and the first laminate 80A and third laminate 80C are bonded together to produce a prismatic laminate 80 as shown in Figure 5(B). Next, as shown in Figure 5(C), the laminate 80 is cut into a predetermined shape to manufacture the interior member 43. This produces an interior member 43 having a main body portion 431, a guide piece portion 432, a retaining piece portion 433, and two backing plates 70 built inside. Interior members 44 and 45, which also have backing plates 70 built inside, are manufactured using the same procedure as interior member 43. In the interior members 43, 44, and 45, the backing plate 70 is located approximately midway in the depth direction and is arranged parallel to the outer and inner depth surfaces. Furthermore, the length from each depth surface to each backing plate 70 is set to the length reached by the screws 61 that are screwed in from the depth surface.

[0034] [Effects of the second embodiment] In the second embodiment as well, since the back plate 70 is built into the interior member 43, the pulling force of the screw 61 can be improved, and the same effect as in the first embodiment can be achieved.

[0035] [Differentiation] The present invention is not limited to the configurations described in the above embodiments, and any modifications that can achieve the objectives of the present invention are included in the present invention. The main structural material, wood, is not limited to LVL, but may also be laminated timber, or any wood suitable for use as a wooden component in wooden joinery. Furthermore, the frame material is not limited to having a metal exterior component and a wooden interior component as in each embodiment, but may also have a synthetic resin exterior component and a wooden interior component. In addition, the interior component may consist of a wooden main structure such as LVL and a decorative panel attached to the interior side of the main structure. Moreover, the frame material may have a structure in which the exterior and interior surfaces of the panel are held by wooden joinery material. Furthermore, the lamination direction of the veneers in each interior member 41, 42, 43, 44, 45 is not limited to the above embodiment. For example, the interior members 41 and 42 of the upper frame 21 and lower frame 22 may have veneers laminated in the left-right direction, which is the longitudinal direction of the upper frame 21 and lower frame 22, or they may have veneers laminated in the depth direction, i.e., the interior-exterior direction. Similarly, the interior members 43, 44, and 45 of the door frame 23, exterior meeting frame 24, and interior meeting frame 25 may have veneers laminated in the up-down direction, which is their longitudinal direction, or they may have veneers laminated in the depth direction, i.e., the interior-exterior direction. When veneers are laminated in the visible direction or longitudinal direction of each interior member 41, 42, 43, 44, 45, the laminated surface of the veneers becomes the interior surface, i.e., the design surface, of the interior members 41, 42, 43, 44, 45. Furthermore, if the veneers are laminated in the depth direction of each interior component 41, 42, 43, 44, and 45, one veneer will form the interior surface, or design surface, of each interior component 41, 42, 43, 44, and 45. The reinforcing material 51 is not limited to being fixed to the retaining pieces 413, 423, 433, 443, and 453 with adhesive or double-sided tape; a configuration in which the reinforcing material 513 is not fixed to the retaining pieces 413, 423, 433, 443, and 453 can also be adopted. Even if the reinforcing material 513 is not fixed to the retaining pieces 413, 423, 433, 443, and 453, the reinforcing material 513 can still support the wind pressure applied to the panel 26, thus reinforcing the retaining pieces 413, 423, 433, 443, and 453.

[0036] In the above embodiments, the backing plates 70 were built into the interior members 43, 44, and 45, but the backing plates 70 may also be built into the interior members 41 and 42. Furthermore, the configuration of the backing plate 70 is not limited to the embodiments described above. For example, a total of four backing plates 70 may be arranged, including backing plates 70 arranged along the visible direction in the first embodiment and backing plates 70 arranged along the depth direction in the second embodiment. Furthermore, the backing plate 70 may be positioned diagonally, intersecting the depth and face directions of the wooden joinery material, or it may be made of a board with an L-shaped cross-section. Moreover, the backing plate 70 is not limited to being positioned along the entire length of the wooden joinery material in the longitudinal direction, but may also be positioned, for example, only at both ends in the longitudinal direction, in accordance with the screw threading positions. In other words, the backing plate embedded in the wooden joinery material should be set according to the position and orientation of the screws used to attach the components.

[0037] The use of wooden joinery materials is not limited to the frame material of shoji screens; they may also be used as frame material for window frames. Furthermore, the joinery using wooden joinery materials is not limited to sliding windows; it may also be used for swing-type joinery such as casement windows and sash windows, as well as sliding-type joinery such as single-hung windows and double-hung windows, and even fixed windows. The components fixed to the wooden joinery material by screws screwed into the backing board are not limited to those in the embodiments described above, and may include, for example, hinges. Therefore, the present invention can be used when attaching components to wooden joinery material according to the type of window.

[0038] [summary] The present invention relates to a wooden joinery material used in joinery, characterized by comprising a wooden member and a metal backing plate provided inside the wooden member to receive a screw that is screwed into the wooden member. According to the present invention, a metal backing plate is provided inside the wooden member, and this backing plate receives the screw that is screwed into the wooden member. As a result, the threads of the screw engage with the backing plate, increasing the force required to pull out the screw. Therefore, the fixing strength of the parts fixed by the screw can be improved, and since there is no need to increase the length of the screw, the cross-sectional size of the wooden member can be reduced.

[0039] In the wooden joinery material of the present invention, it is preferable that the wooden member is made of laminated veneer lumber or glued laminated lumber. According to the present invention, since the wooden members are made of laminated veneer lumber or glued laminated lumber, variations in the quality of the wooden members can be suppressed. Furthermore, while the pull-out force of laminated veneer lumber or glued laminated lumber decreases depending on the surface into which a screw is screwed, the pull-out force can be increased by providing a backing plate to receive the screw. Therefore, the constraints on the surface on which the component can be attached to the wooden member can be eliminated.

[0040] In the wooden joinery material of the present invention, it is preferable that the backing board is arranged such that, in a cross section perpendicular to the longitudinal direction of the wooden member, the longitudinal direction of the backing board is parallel to the lamination direction of the board material constituting the laminated veneer material or the glued wood. In laminated veneer lumber and glued laminated lumber, there is a problem in that the pull-out force of the screw decreases when a screw is driven in from a direction perpendicular to the lamination direction of the board material. However, according to the present invention, the pull-out force can be increased because the screw driven in from a direction perpendicular to the lamination direction of the board material can be supported by the backing plate.

[0041] In the wooden joinery material of the present invention, it is preferable that the backing board is arranged along the entire length in the longitudinal direction of the wooden member. According to the present invention, the backing plate not only receives screws but also reinforces the wooden component and prevents warping. This improves the quality of wooden joinery materials. [Explanation of symbols]

[0042] 1...Sliding window, 10...Window frame, 20A...Exterior sash, 20B...Interior sash, 23...Door frame, 24...Exterior meeting frame, 37...Crescent lock receiver, 43...Interior component, 44...Interior component, 45...Interior component, 61...Screw, 66...Screw, 70...Backing plate, 75...Handle, 80...Laminate, 80A...First laminate, 80B...Second laminate, 80C...Third laminate, 81...Single sheet, 82...Backing plate insertion groove, 82B...Backing plate insertion groove, 83...Adhesive surface.

Claims

1. Wooden joinery material used in joinery, It comprises a wooden member and a metal backing plate provided inside the wooden member to receive screws that are screwed into the wooden member. A wooden joinery material characterized by its features.

2. In the wooden joinery material described in claim 1, The aforementioned wooden members are made of laminated veneer lumber or glued laminated lumber. A wooden joinery material characterized by its features.

3. In the wooden joinery material according to claim 2, The backing board is positioned such that, in a cross-section perpendicular to the longitudinal direction of the wooden member, the longitudinal direction of the backing board is parallel to the lamination direction of the veneer laminate or the laminated wood. A wooden joinery material characterized by its features.

4. In the wooden joinery material described in claim 1, The backing plate is positioned along the entire length of the wooden member in the longitudinal direction. A wooden joinery material characterized by its features.

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