Column structure

Abstract

To provide a support structure usable for a plurality of applications.SOLUTION: A core material 2 having a rectangular cross section, a cover member 3 made of resin covering surfaces of four sides of the core material, and a bracket 4 or 5 for fixing at least one end of the core material to an attachment object, wherein a partition wall part 25 is formed inside the core material 2, and a concave part 26 flatly recessed over the entire length is formed on a first surface 21 of the core material; The bracket has a base plate part 41,51 facing the mounting object, a first arm part 42,52 extending from the base plate part and facing the flat surface of the recessed part, and a second arm part 43,53 extending from the base plate part and facing the flat surface of the partition wall part. A screw insertion hole 421,521 for fastening and fixing the first arm portion to the flat surface of the recessed portion is formed in the first arm portion, a screw insertion hole 431,531 for fastening and fixing the second arm portion to the partition wall portion is formed in the second arm portion, and a notch 27 for passing the second arm portions of the two brackets through the inside of the core material is formed in any of the four surfaces at both end portions of the core material.SELECTED DRAWING: Figure 5

Description

[Technical Field]

[0001] The present invention relates to a support structure. [Background technology]

[0002] In order to attach the sash frame to an opening in the main body, the support structure arranged as part of the sash has a cover member attached to the surface of the core material to ensure thermal insulation (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2014-91917 Summary of the Invention [Problem to be solved by the invention]

[0004] The above-mentioned support structures are used around the periphery of the sash frame, for example, as a transom or mullion, but these have been designed separately as a support structure for the transom and a support structure for the mullion. However, in the case of a configuration in which a cover member is provided on the core material as described above, if the support structure for the transom and the support structure for the mullion were designed separately, an increase in costs was unavoidable. For this reason, there has been a demand for the development of a support structure that can be used for multiple purposes.

[0005] SUMMARY OF THE INVENTION It is an object of the present invention to provide a support structure that can be used for multiple purposes. [Means for solving the problem]

[0006] According to one aspect of the present invention, in order to solve the above problem, In the support structure, A core material having a rectangular cross section; a resin cover member that covers the four surfaces of the core material excluding both end cross sections; a bracket for fixing at least one end of the core material to an object to be attached; A partition wall is formed inside the core material over the entire length, A first surface of the four surfaces of the core material is formed with a flat recessed portion along its entire length, the bracket has a base portion facing the attachment object, a first arm portion rising from the base portion and facing the flat surface of the recessed portion, and a second arm portion rising from the base portion and facing the flat surface of the partition wall, The first arm portion has a through-hole for a screw to be fastened to the flat surface of the recessed portion, The second arm portion has a through-hole for a screw to be fastened to the partition wall portion, The core material is characterized in that a notch is formed on one of the four faces of the one end of the core material to allow the second arm portion of the bracket to pass through the inside of the core material. [Effects of the Invention]

[0007] According to the present invention, it is possible to provide a support structure that can be used for both crossbeams and corner mullions. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a schematic front view showing the interior of a support structure according to an embodiment of the present invention incorporated as a transom into a stepped window sash of an inner window in a double-glazed window. [Figure 2] This is a schematic perspective view showing the interior of a double-glazed window in which the support structure is incorporated as a corner mullion of the corner sash of the inner window. [Figure 3] FIG. 1 is a partial plan view of a support structure applied as a transom in a stepped window sash. [Figure 4] A cross-sectional view along the projection direction and vertical direction of the support structure. [Figure 5] FIG. 10 is a perspective view showing the process of assembling the support structure. [Figure 6] FIG. 6 is a perspective view showing a step following FIG. 5 in assembling the support structure. [Figure 7] 10 is a cross-sectional view showing a cross section perpendicular to the Z direction of the temporary fixing structure. FIG. [Figure 8] This is a front view of a support structure applied as a corner mullion at an external corner in a corner sash. [Figure 9] A cross-sectional view of a support structure as a corner mullion along a first horizontal direction and a first forward direction. [Figure 10] FIG. 10 is a perspective view showing the process of assembling a support structure as a corner mullion. [Figure 11] FIG. 11 is a perspective view showing a step following FIG. 10 in assembling the support structure as a corner mullion. [Figure 12] This is a front view of a support structure applied as a corner mullion at an inside corner in a corner sash. DETAILED DESCRIPTION OF THE INVENTION

[0009] Hereinafter, embodiments of the present invention will be described with reference to the drawings. However, the scope of the present invention is not limited to the embodiments disclosed below. Because the drawings are provided for illustrative purposes only, the scope of the present invention is not limited to the examples shown in the drawings.

[0010] [Application of support structure] The support structure 1 according to the embodiment of the present invention is used as a mullion for a stepped window sash and as a corner mullion for a corner sash. However, the support structure 1 may also be applied to other components that make up the sash. Figure 1 is a schematic front view showing the interior of a double-glazed window in which the support structure 1 is incorporated as a mullion into a stepped window sash 110 of an inner window, and Figure 2 is a schematic perspective view showing the interior of a double-glazed window in which the support structure 1 is incorporated as a corner mullion into a corner sash 120 of an inner window.

[0011] [Step window sash] The interior step window sash 110 is attached and installed inside an opening in the building's frame. Note that an exterior window sash (not shown) is installed on the outdoor side of the step window sash 110 in the opening in the frame where the interior step window sash 110 is installed.

[0012] An arrow representing the horizontal sighting direction S1 is shown in Figure 1. The sighting direction T1 is shown in Figure 3. The symbol V represents the vertical direction. The horizontal sighting direction S1 and the vertical downward direction V are collectively called the sighting direction, which refers to the direction parallel to the interior wall. Of the sighting directions, the horizontal direction is called the horizontal sighting direction S1, and the vertical direction is called the vertical upward direction V. The sighting direction T1 refers to the direction perpendicular to the sighting direction, i.e., the thickness direction of the interior wall. The vertical upward direction V is perpendicular to the horizontal sighting direction S1 and the sighting direction T1. The look-out direction is also called the in-plane direction, and the look-out direction T1 is also called the out-of-plane direction.

[0013] The stepped window sash 110 has a rectangular frame body 111, a support structure 1 that serves as a lattice dividing the inner area of ​​the frame body 111 into upper and lower sections, sliding shoji screens 112, 113 above the support structure 1, and sliding shoji screens 114, 115 below the support structure 1.

[0014] The frame body 111 is formed by assembling left and right vertical frames, an upper frame, and a lower frame into a rectangular shape. The support structure 1 as a gable is connected at one end and the other end to the left and right vertical frames in a state parallel to the horizontal direction S1. Also, the support structure 1 as a gable is provided with an intermediate lower frame 116 attached to its upper side for slidably supporting the upper sliding shoji screens 112, 113, and an intermediate upper frame 117 attached to its lower side for slidably supporting the lower sliding shoji screens 114, 115. Although the support structure 1 as a transom is shown as being arranged near the upper side in the example, it may be arranged in the middle position or near the lower side.

[0015] Each of the sliding shoji screens 112 to 115 has a bottom frame, a top frame, and a left and right frame extending in the vertical direction assembled into a frame, with glass held inside. The sliding shoji screens 112 to 115 are all supported inside the frame body 111 so as to be slidable along the horizontal direction S1.

[0016] In addition, in Figure 1, both the upper and lower sashes are shown as sliding window sashes, but this is not limited to this and they may also be sashes of sliding windows, fixed windows, etc. Furthermore, the upper and lower sashes may each be of a different type.

[0017] [Corner sash] The corner sash 120 of the interior window is attached and installed in a corner opening formed by two interior walls that are butted at a right angle in the skeleton of the building to which it is to be attached, forming a corner on the outdoor side. Note that the corner opening of the skeleton where the corner sash 120 of the interior window is installed has a corner sash of an exterior window (not shown) installed on the outdoor side of the corner sash 120.

[0018] 2 shows arrows representing a first horizontal finding direction S2, a first horizon direction T2, a second horizontal finding direction S3, and a second horizon direction T3. Also, the symbol V indicates the vertical direction. The first horizontal finding direction S2 refers to a direction parallel to and horizontal to one of the interior walls, and the first prospective direction T2 refers to a direction perpendicular to the first horizontal finding direction S2 and in the thickness direction of one of the interior walls. The second horizontal finding direction S3 refers to a direction parallel to and horizontal with respect to the other inner wall, and the second prospective direction T3 refers to a direction perpendicular to the second horizontal finding direction S3 and in the thickness direction of the other inner wall. The first horizontal finding direction S2 and the second horizontal finding direction T3 are parallel to each other, and the first horizontal finding direction T2 and the second horizontal finding direction S3 are parallel to each other. The vertical up-down direction V is perpendicular to the first and second horizontal finding directions S2 and S3 and the first and second horizontal finding directions T2 and T3. The horizontal directions S2, S3 and the vertical direction V are also called in-plane directions, and the projection directions T2, T3 are also called out-of-plane directions.

[0019] The corner sash 120 has a first sash 121 aligned along the horizontal sighting direction S2, a second sash 122 aligned along the horizontal sighting direction S3, and a support structure 1 as a corner mullion that connects the first sash 121 and the second sash 122 in a butted state at a right angle. Furthermore, the first sash 121 has a rectangular frame body 123 and sliding shoji screens 124 and 125. Similarly, the second sash 122 has a rectangular frame body 126 and sliding shoji screens 127 and 128.

[0020] The frame bodies 123, 126 of the sashes 121, 122 are each formed by assembling left and right vertical frames, an upper frame, and a lower frame into a rectangular shape. Each of the sliding shoji screens 124, 125, 127, and 128 has a bottom frame, a top frame, and a left and right frame extending in the vertical direction assembled in a rectangular shape, with glass held inside. The sliding shoji screens 124, 125, 127, and 128 are supported inside the respective frame bodies 123 and 126 so as to be slidable along the horizontal direction S2 or S3.

[0021] The upper and lower ends of the support structure 1 serving as a corner mullion are connected to the opening of the main body in a state parallel to the vertical direction V. The support structure 1 serving as a corner mullion has one vertical frame of the frame body 123 of the first sash 121 attached to one of the four outer periphery faces, and one vertical frame of the frame body 126 of the second sash 122 attached to the other outer periphery face. In addition, the sashes on one or both sides of the support structure 1 as a corner post may be fitted with multi-window sashes.

[0022] In addition, in Figure 2, both the left and right sashes are shown as sliding window sashes, but this is not limited to this and they may be sashes of vertical sliding windows, fixed windows, etc. Furthermore, the left and right sashes may be different types of windows.

[0023] [Support structure as eyesless] Fig. 3 is a partial plan view of the support structure 1 applied as a transom in a stepped window sash 110, and Fig. 4 is a cross-sectional view along the projection direction T1 and the vertical direction V. In Fig. 4, the left side of the paper indicates the outside of the room, and the right side of the paper indicates the inside of the room. 5 and 6 are perspective views showing the assembly of the support structure 1 in order.

[0024] In explaining the support structure 1, as shown in Figure 3, the longitudinal direction of the support structure 1 is defined as the Z direction, and one side of the Z direction is defined as the +Z direction (left side of the paper), and the other side of the Z direction is defined as the -Z direction (right side of the paper). Also, as shown in Figure 4, the Y direction is defined as a direction perpendicular to the Z direction in the support structure 1 and parallel to the first surface 21 and third surface 23 of the core material 2 described later, and one side of the Y direction is defined as the +Y direction (top of the paper) and the other side of the Y direction is defined as the -Y direction (bottom of the paper). Furthermore, as shown in Figure 4, the X direction is defined as a direction perpendicular to the Z direction in the pillar structure 1 and parallel to the second surface 22 and the fourth surface 24 of the core material 2 described later, and one side of the X direction is defined as the +X direction (right side of the paper), and the other side of the X direction is defined as the -X direction (left side of the paper). The step window sash 110 is installed so that the Z direction of the pillar structure 1 as a crossbeam is parallel to the horizontal direction S1, the X direction is parallel to the projection direction T1, and the Y direction is parallel to the vertical direction V.

[0025] The support structure 1 comprises a core material 2 having a rectangular cross section and made from an extruded profile, two resin cover members 3 that cover the four surfaces of the core material 2 except for the cross sections at both ends, and two brackets 4, 5 that fix one end and the other end of the core material 2 to the frame body 111 of a stepped window sash 110 as the object to be attached.

[0026] [Support structure: core material] The core material 2 is made of an aluminum alloy extrusion with a hollow structure and a substantially rectangular cross section perpendicular to the Z direction. As described above, the core material 2 is an extrusion molded extrusion, and therefore both ends in the Z direction are open. Furthermore, unless otherwise specified as being made of separate members, each part of the core material 2 described below is assumed to be integrally formed. Furthermore, since the core material 2 is an extrusion molded shape, the cross-sectional shape perpendicular to the Z direction is constant over the entire length, except for a notch 27 described later. The core material 2 is not limited to an aluminum alloy and may be made of other metals.

[0027] As shown in Figure 4, the core material 2 has a first surface 21 consisting of a flat plate parallel to the Z direction and the Y direction, a second surface 22 consisting of a flat plate parallel to the Z direction and the X direction, a third surface 23 consisting of a flat plate parallel to the Z direction and the Y direction, and a fourth surface 24 consisting of a flat plate parallel to the Z direction and the X direction. In the core material 2, the first surface 21 is located at the end in the +X direction, the second surface 22 is located at the end in the -Y direction, the third surface 23 is located at the end in the -X direction, and the fourth surface 24 is located at the end in the +Y direction.

[0028] When the support structure 1 is used as a transom, the intermediate upper frame 117 of the stepped window sash 110 described above is attached to the outer surface of the second surface 22 by screws or the like. Also, the intermediate lower frame 116 is attached to the outer surface of the fourth surface 24 by screws or the like.

[0029] Additionally, a partition wall portion 25 is formed in the hollow interior of the core material 2 over the entire length in the Z direction, from the inner surface of the first surface 21 to the inner surface of the third surface 23. This partition wall portion 25 is made of a flat plate parallel to the Z direction and the X direction, with the +Y side surface and the -Y side surface being flat. The partition wall portion 25 is arranged so that the distance along the Y direction to the second surface 22 opposing the partition wall portion 25 is shorter than the distance along the Y direction to the fourth surface 24 opposing the partition wall portion 25.

[0030] A recessed portion 26 recessed in the -X direction is formed on the outer surface of the first surface 21, with a width equal to or greater than half the width of the first surface 21 in the Y direction. This recessed portion 26 is located at the end of the first surface 21 on the -Y direction side, and is formed over the entire length of the first surface 21 in the Z direction. Furthermore, the recessed portion 26 has an inner bottom surface 261 on the −X direction side that is a flat surface parallel to the Z direction and the Y direction.

[0031] Furthermore, a locking extension 262 extending in the -Y direction is formed over the entire length in the Z direction at the end on the +Y side of the inner edge of recess 26. The +X side plane of this locking extension 262 is continuous with the +X side plane of first surface 21 so as to be flush with it. As shown in Figure 5, the first arm portions 42, 52 of the two brackets 4, 5, which will be described later, are inserted between this locking extension portion 262 and the inner bottom surface 261 of the recessed portion 26 from the -Y side, and the locking extension portion 262 locks the core material 2 against each bracket 4, 5 to prevent it from falling off in the -X direction.

[0032] The locking extensions 262 may be formed at both ends in the Z direction of the core material 2, and are not necessarily formed over the entire length in the Z direction. For example, the locking extensions 262 may be removed except for both ends in the Z direction.

[0033] In the core material 2, notches 27 are formed at both ends in the Z direction of the second surface 22 adjacent to the first surface 21 on which the recessed portion 26 is formed, for passing the second arm portions 43, 53 of the brackets 4, 5, described later, through the inside of the core material 2.

[0034] When attaching the pillar structure 1 to the frame body 111 of the stepped window sash 110 (when used as a mullion) or to an opening in the main body (when used as a corner mullion), the two brackets 4, 5 are first attached to the frame body 111 or the main body, and then the core material 2 is connected to each bracket 4, 5.

[0035] 3, it is preferable that the notch 27 is wider in the X direction and longer in the Z direction than the second arm portions 43, 53. However, this is not essential. For example, even if the width of the notch 27 in the X direction is narrower than the second arm portions 43, 53, the second arm portions 43, 53 can be passed through the notch 27 by tilting the core material 2 around an axis along the Z direction.

[0036] Furthermore, the total length of the core material 2 in the Z direction may be slightly shorter than the distance between the mounting surfaces of the frame body 111 or the frame frame of the two brackets 4, 5 (see gap N in Figure 3). If the total length of the core material 2 in the Z direction were to strictly match the distance between the mounting surfaces of the two brackets 4, 5, it would be impossible to accommodate dimensional changes due to measurement errors or changes in temperature or humidity, and the core material 2 may not fit between the mounting surfaces. In this case, the length of the notch 27 in the Z direction can be made shorter than the second arm portions 43, 53 by the total length of the gap N at both ends of the core material 2.

[0037] [Support structure: bracket] The brackets 4 and 5 have shapes and structures that are symmetrical with respect to a plane perpendicular to the Z direction, and the dimensions of each part are set to be equal. 3 to 6, the brackets 4 and 5 are made by cutting a single flat metal plate made of steel, stainless steel, or the like, and partially bending it as necessary. Therefore, unless otherwise specified as being made of separate members, the brackets 4 and 5 described below are all considered to be integrally formed. The brackets 4 and 5 may be made of other metals as long as sufficient strength can be ensured.

[0038] The brackets 4 and 5 have base portions 41 and 51 fixed to the mounting surface of the support structure 1, first arms 42 and 52 raised at right angles from the +X side end of the outer edge of the base portions 41 and 51 by a fold along the Y direction, and second arms 43 and 53 raised at right angles from near the -Y side end of the outer edge of the base portions 41 and 51 by a fold along the X direction.

[0039] The substrate portions 41, 51 are flat plates perpendicular to the Z direction. As shown in Fig. 4, the dimensions and shape of the outer edge portions of the substrate portions 41, 51 are set so that they fit inside the inner edge portions of the two cover members 3, 3 when covering the core material 2, as viewed from the Z direction. The base plate portions 41, 51 are formed with a plurality of (for example, four) insertion holes 411, 511 for passing through fastening members for fastening and fixing the brackets 4, 5 to the frame body 111 or the mounting surface of the frame of the pillar structure 1. Screws 45, 55 are used as the fastening members.

[0040] The first arm 42 rises in the -Z direction from the end of the +X side of the substrate 41. The first arm 52 rises in the +Z direction from the end of the +X side of the substrate 51. The first arms 42, 52 have a flat plate shape parallel to the Z direction and the Y direction. When the core material 2 and the brackets 4, 5 are connected, the flat surfaces on the -X side of the first arms 42, 52 abut against or closely face the inner bottom surface 261 of the recessed portion 26 of the first surface 21. Furthermore, the first arm portions 42, 52 are formed with a plurality of (for example, two) insertion holes 421, 521 for passing fastening members (drill screws 44, 54 described later) for fastening and fixing the brackets 4, 5 to the inner bottom surface 261 of the recessed portion 26. It is preferable to form a countersunk hole for accommodating the head of the fastening member on the +X side of the insertion holes 421, 521.

[0041] The second arm 43 rises in the -Z direction from near the end on the -Y side of the substrate 41. The second arm 53 rises in the +Z direction from the end on the -Y side of the substrate 51. The second arms 43, 53 are shaped like flat plates parallel to the Z and X directions. That is, the planes of the second arms 43, 53 are formed in a direction perpendicular to the planes of the first arms 42, 52. When the core 2 and the brackets 4 and 5 are connected, the flat surfaces on the +Y side of the second arms 43 and 53 abut against or closely face the flat surface on the −Y side of the partition wall 25 . Further, the second arm portions 43, 53 are formed with a plurality of (for example, two) insertion holes 431, 531 for passing fastening members (drill screws 44, 54 described later) for fastening the second arm portions 43, 53 to the partition wall portion 25. It is preferable to form a counterbore hole for accommodating the head of the fastening member on the -Y side of the insertion holes 431, 531. Note that it is not essential to provide a counterbore hole in the first arm portions 42, 52 and the second arm portions 43, 53. Furthermore, the shape of the screw of the fastening member may be selected appropriately.

[0042] When connecting the core material 2 and the brackets 4, 5, the fastening members may be passed through both the insertion holes 421, 521 of the first arm portions 42, 52 and the insertion holes 431, 531 of the second arm portions 43, 53 to secure them together, or the fastening members may be passed through only one of the insertion holes 421, 521 of the first arm portions 42, 52 and the insertion holes 431, 531 of the second arm portions 43, 53 to secure them together. Assuming that the support structure 1 is used as a guide, as shown in FIG. 4, a case will be exemplified in which the core material 2 and the brackets 4, 5 are connected by passing fastening members only through the insertion holes 421, 521 of the first arm portions 42, 52.

[0043] When connecting the core 2 and the brackets 4, 5, screws or bolts can be used as fastening members regardless of whether the through-holes 421, 521 of the first arms 42, 52 or the through-holes 431, 531 of the second arms 43, 53 are used. In particular, using drill screws 44, 54 as fastening members is convenient during assembly. It is also possible to use ordinary screws. In this case, however, it is necessary to pre-form screw holes at the attachment positions of the core material 2. Even if these screw holes are formed accurately at appropriate positions corresponding to the design values, there is a possibility that misalignment may occur between the insertion holes 421, 521 and the insertion holes 431, 531 and the pre-formed screw holes during the process of assembling the support structure 1, and it may become necessary to form the screw holes again. Furthermore, if the screw holes are formed immediately before connecting the core material 2 and the brackets 4 and 5, it is possible to prevent the above-mentioned misalignment from occurring, but this requires machining of the screw holes during assembly, which increases the workload. When the drill screws 44, 54 are used, it is possible to reduce the misalignment of the screw holes and the workload.

[0044] [Cover material] The two cover members 3 work together to cover the entire first surface 21 to the fourth surface 24 of the core material 2. Each cover member 3 is made by extrusion molding a resin with higher insulating properties than the core material 2, and by covering the entire surface exposed to the outside as a transom, it achieves the improved insulating properties required for an interior window.

[0045] The two cover members 3 are made of the same material and are both formed by extrusion molding, so that the cross-sectional shape perpendicular to the Z direction is constant over the entire length. Furthermore, each part of the cover member 3 described below is assumed to be formed integrally.

[0046] As shown in FIG. 4, one cover member 3 covers the entire outer surface of the first surface 21 of the core material 2, part of the outer surface of the second surface 22, and part of the outer surface of the fourth surface 24. The other cover member 3 covers the entire outer surface of the third surface 23 of the core material 2, a part of the outer surface of the second surface 22, and a part of the outer surface of the fourth surface 24.

[0047] One cover member 3 covers a wider area of ​​the outer surface of the second surface 22 in the X direction than the other cover member 3, including the entire cutout 27. As a result, the one cover member 3 covers the entire recessed portion 26 and the entire cutout 27. The other cover member 3 covers a wider area in the X direction of the outer surface of fourth surface 24 than one cover member 3. In this case, the width in the X direction over which the other cover member 3 covers the outer surface of fourth surface 24 is equal to the width in the X direction over which one cover member 3 covers the outer surface of second surface 22.

[0048] The two cover members 3 have a flat surface portion 31 that covers the entire first surface 21 or the third surface 23 of the core material 2, and a first opposing surface portion 32 and a second opposing surface portion 33 that are bent and raised vertically from each end of the flat surface portion 31 in the Y direction. The first opposing surface portion 32 has a longer extension length than the second opposing surface portion 33. The flat surface portion 31 of one cover member 3 covers the entire first surface 21 , the first opposing surface portion 32 covers a part of the second surface 22 , and the second opposing surface portion 33 covers a part of the fourth surface 24 . The flat surface portion 31 of the other cover member 3 covers the entire third surface 23 , the first opposing surface portion 32 covers a part of the fourth surface 24 , and the second opposing surface portion 33 covers a part of the second surface 22 .

[0049] Due to the above-mentioned configuration, the two cover members 3 have an open cross-sectional shape in which the cross-sectional shape perpendicular to the Z direction is approximately U-shaped, and thus can be attached to the core material 2 so as to cover it from one side in the X direction. The cover member 3 has temporary fastening structures 61, 62 between the first opposing surface portion 32 and the core material 2 and between the second opposing surface portion 33 and the core material 2 to prevent the cover member 3 from falling off from the core material 2.

[0050] FIG. 7 is a cross-sectional view showing a cross section of the temporary fixing structure 61 or 62 perpendicular to the Z direction. The temporary fixing structure 61 is made of a concave-convex structure provided between the first opposing surface portion 32 of the cover member 3 and the second surface 22 or the fourth surface 24 of the core material 2. The temporary fixing structure 62 is formed between the second opposing surface portion 33 of the cover member 3 and the fourth surface 24 or the second surface 22 of the core material 2 . The temporary fixing structure 61 has a convex rib 611 formed on the inner surface of the first opposing surface portion 32 over the entire length in the Z direction, and a concave groove 612 formed on the outer surface of the second surface 22 or the fourth surface 24 of the core material 2 over the entire length in the Z direction. The temporary fixing structure 62 has a convex rib 621 formed along the entire length in the Z direction on the inner surface of the second opposing surface portion 33, and a concave groove 622 formed along the entire length in the Z direction on the outer surface of the fourth surface 24 or the second surface 22 of the core material 2. It should be noted that the temporary fixing structures 61 and 62 may be formed by forming recessed grooves on the cover member 3 side and ridges on the core material 2 side.

[0051] The cross-sectional shape of the ridges 611 and 621 is substantially triangular, and the cross-sectional shape of the recessed grooves 612 and 622 is rectangular. The ridges 611, 621 are formed by extrusion molding of resin integrally with the cover member 3. In the case of extrusion molding of resin, if the size of the ridges is small, the processing precision is unstable and slight bending may occur in some parts. Even in such a case, by making the cross-sectional shape of the recessed grooves 612, 622 rectangular, slight bending of the ridges 611, 621 can be tolerated, and the mutual fitting state can be maintained.

[0052] 7, the ridges 611, 621, which have a substantially triangular cross section, have a slope that forms an acute angle with the inner surface of the cover member 3 on the downstream side of the mounting direction F in the direction F in which the cover member 3 is mounted to the core material 2, and have an upright surface that forms a right angle or obtuse angle with the inner surface of the cover member 3 on the downstream side of the mounting direction F. Therefore, when the cover member 3 is mounted to the core material 2, the ridges 611, 621 do not interfere, and can restrict the movement of the cover member 3 in a direction that would cause it to fall off from the core material 2 (the opposite direction to the mounting direction F).

[0053] The temporary fastening structure 61 on the first opposing surface portion 32 side of the cover member 3 and the temporary fastening structure 62 on the second opposing surface portion 33 side have different distances from the flat portion 31 in the X direction, with the temporary fastening structure 61 being slightly farther apart. As a result, when attaching the cover member 3 to the core material 2, if the first opposing surface portion 32 and the second opposing surface portion 33 are attached in the opposite direction, the combination of the temporary fixing structure 61 and the temporary fixing structure 62 will be reversed, and the convex ridges 611, 621 and the concave grooves 612, 622 will no longer be able to fit together. Therefore, by making the distances from the planar portion 31 of the temporary fixing structures 61 and 62 different, it is possible to prevent the cover member 3 from being attached to the core material 2 in the reverse direction.

[0054] [Assembling a support structure as a blind structure] The procedure for assembling the support structure 1 as a transom will be described with reference to FIGS. First, the brackets 4 and 5 are fixed to the left and right vertical frames of the frame body 111 of the stepped window sash 110 so that they are aligned in height and face each other. The base plate portions 41 and 51 of the brackets 4 and 5 are abutted against the opposing surfaces of the left and right vertical frames and fastened in place with screws 45 and 55.

[0055] 5, the cover member 3 that does not cover the recessed portion 26 and the cutout 27 is attached to the core material 2 from the -X side. The cover member 3 is attached with the inner surface of the flat portion 31 facing the third surface 23 of the core material 2 and with the inner surfaces of the first opposing surface portion 32 and the second opposing surface portion 33 sliding against the fourth surface 24 and the second surface 22, respectively. At this time, the cover member 3 is moved in the +X direction until the protruding strips 611 and 621 of the temporary fastening structures 61 and 62 fit into the recessed grooves 612 and 622.

[0056] Then, the second arms 43, 53 of the brackets 4, 5 pass through the notches 27 at both ends of the core material 2 and enter the inner space on the -Y side of the partition wall portion 25, guiding the core material 2 so that the partition wall portion 25 is placed on the +Y side surface of the second arms 43, 53. Also, the −X side surfaces of the first arm portions 42 , 52 of the brackets 4 , 5 abut against the inner bottom surface 261 of the recessed portion 26 and are inserted into the gap between the inner bottom surface 261 and the locking extension portion 262 .

[0057] As a result, the core material 2 is placed on the second arm portions 43, 53 of the brackets 4, 5 at both ends in the Z direction, and is in a stable state in the Y direction. Furthermore, the first arms 42, 52 of the brackets 4, 5 are inserted between the inner bottom surface 261 of the recessed portion 26 of the core 2 and the locking extension 262, and the core 2 is stable in the X direction.

[0058] As mentioned above, the length of the core material 2 in the Z direction is set to be short enough to leave a gap in the Z direction distance from the mounting surface of bracket 4 to the mounting surface of bracket 5, so even if an error occurs, it is tolerated by the gap. In contrast, cover member 3 is attached with a length equal to the distance in the Z direction from the attachment surface of bracket 4 to the attachment surface of bracket 5. Since cover member 3 is made of resin, it is possible to prepare it with a length that allows for a margin relative to the distance in the Z direction from the attachment surface of bracket 4 to the attachment surface of bracket 5, and adjust the length by cutting off the end in the Z direction during attachment, for example.

[0059] As a result, the core material 2 is stable in all of the X, Y, and Z directions. In this state, drill screws 44, 54 are inserted into the insertion holes 411, 511 of the first arm portions 42, 52 of the brackets 4, 5, respectively, and drilled into the inner bottom surface 261 of the recessed portion 26 of the core material 2. In this way, both ends of the core material 2 in the Z direction are fastened and fixed to the brackets 4, 5. The drill screws 44 and 54 may also be inserted into the insertion holes 431 and 531 of the second arm portions 43 and 53 to fasten and fix them to the partition wall portion 25 .

[0060] Next, as shown in FIG. 6, the other cover member 3 is attached to the core member 2. The cover member 3 is attached to the core material 2 from the +X side. The cover member 3 is attached with the inner surface of the flat portion 31 facing the first surface 21 of the core material 2 and with the inner surfaces of the first opposing surface portion 32 and the second opposing surface portion 33 sliding against the second surface 22 and the fourth surface 24, respectively. At this time, the cover member 3 is moved in the -X direction until the protruding strips 611, 621 of the temporary fastening structures 61, 62 fit into the recessed grooves 612, 622. As a result, the recessed portion 26 and the notch 27 are covered by the other cover member 3.

[0061] In the above state, the core material 2 is fixed to the frame body 111 of the stepped window sash 110, but each cover member 3 is only temporarily attached to the core material 2 and is not fixed thereto. However, as shown in Figure 4, the intermediate lower frame 116 is fastened and fixed to the fourth surface 24 of the core material 2 by a screw that penetrates the first opposing surface portion 32 of one of the cover members 3, thereby fixing one of the cover members 3 to the core material 2.

[0062] Similarly, the intermediate upper frame 117 is fastened and fixed to the second surface 22 of the core material 2 by a screw that penetrates the first opposing surface portion 32 of the other cover member 3, so that the other cover member 3 is also fixed to the core material 2. The boundary between the two cover members 3 (the portion where the tip of the first opposing surface portion 32 and the tip of the second opposing surface portion 33 meet) is covered by the intermediate lower frame 116 and the intermediate upper frame 117. Therefore, in the case where the surface of each cover member 3 of the support structure 1 is given a decorative feature, the decorative feature is not impaired and a high level of design can be maintained.

[0063] [Support structure as corner mullions] FIG. 8 is a front view of the support structure 1 applied as a corner mullion at an external corner in a corner sash 120, and FIG. 9 is a cross-sectional view along the first horizontal sight direction S2 and the first horizontal sight direction T2. FIG. 8 shows the state before the vertical frames of the frame bodies 123 and 126 are attached to the support structure 1. In FIG. 9, the upper left side of the paper indicates the outside of the room, and the lower right side of the paper indicates the inside of the room. 10 and 11 are perspective views showing the assembly of the support structure 1 in order.

[0064] The X, Y and Z directions of the column structure 1 are as described above. The corner sash 120 of the support structure 1 serving as a corner mullion is installed so that its Z direction is parallel to the vertical direction V, its X direction is parallel to the first horizontal sight direction S2 and the second horizontal sight direction T3, and its Y direction is parallel to the second horizontal sight direction S3 and the first horizontal sight direction T2.

[0065] [Assembling the support structure as a corner mullion] The procedure for assembling the support structure 1 as a transom will be described with reference to FIGS. First, brackets 4 and 5 are fixed to the opening in the frame to which corner sash 120 will be attached. Base plates 41 and 51 of brackets 4 and 5 are fastened to the frame with screws 45 and 55. Although not shown in the drawings, corner sash 120 is not attached directly to the opening in the frame, but is attached to a plate material fixed in a frame shape to the inner edge of the opening.

[0066] In this case, the boards fixed to the inner edge of the opening in a frame shape are long boards of equal width, and at the corners where the corner mullions are placed, the ends of each are cut at 45° and joined so as to intersect at right angles. The diagonal line L1 in Figure 9 indicates the boundary line of the 45° cut ends of each long board. The support structure 1 as a corner mullion is installed so that the corner of the core material 2 corresponding to the corner of the protruding corner is located on the above-mentioned oblique line L1 when viewed from the Z direction. In other words, when viewed from the Z direction, the oblique line L1 passes through the corners of the first surface 21 and the fourth surface 24 of the core material 2 at an angle of 45° to both of them. The four insertion holes 411, 511 through which the screws 45, 55 provided in the base plate portions 41, 51 of the brackets 4, 5 are inserted are all formed at positions that avoid the diagonal line L1. This prevents a decrease in the holding force of the support structure 1 from occurring when one of the screws 45, 55 is screwed into the boundary between the two long plates when the brackets 4, 5 are attached to the main body.

[0067] 10 , the cover member 3 that does not cover the recessed portion 26 and the cutout 27 is attached to the core material 2 from the -X side. The cover member 3 is attached with the inner surface of the flat portion 31 facing the third surface 23 of the core material 2 and with the inner surfaces of the first opposing surface portion 32 and the second opposing surface portion 33 sliding against the fourth surface 24 and the second surface 22, respectively. At this time, the cover member 3 is moved in the +X direction until the protruding strips 611 and 621 of the temporary fastening structures 61 and 62 fit into the recessed grooves 612 and 622.

[0068] Then, the second arms 43, 53 of the brackets 4, 5 pass through the notches 27 at both ends of the core material 2 and enter the inner space on the -Y side of the partition portion 25, and the core material 2 is guided so that the +Y side surfaces of the second arms 43, 53 abut the -Y side surface of the partition portion 25. Also, the −X side surfaces of the first arm portions 42 , 52 of the brackets 4 , 5 abut against the inner bottom surface 261 of the recessed portion 26 and are inserted into the gap between the inner bottom surface 261 and the locking extension portion 262 .

[0069] As a result, the core material 2 comes into contact with the second arm portions 43, 53 of the brackets 4, 5 at both ends in the Z direction, and is stable in the Y direction. Furthermore, the first arms 42, 52 of the brackets 4, 5 are inserted between the inner bottom surface 261 of the recessed portion 26 of the core 2 and the locking extension 262, and the core 2 is stable in the X direction.

[0070] In this case, too, the length of the core material 2 in the Z direction is set to be short enough to leave a gap relative to the Z direction distance from the mounting surface of bracket 4 to the mounting surface of bracket 5, so even if an error occurs, it is tolerated by the gap. However, since the core material 2 is arranged along the vertical direction V, due to its own weight, the +Z side end of the core material 2 abuts against the -Z side surface of the base portion 41 of the bracket 4, and the -Z side end of the core material 2 is separated from the +Z side surface of the base portion 51 of the bracket 5, so that the core material 2 is positioned biased toward the +Z side.

[0071] On the other hand, the cover member 3 is attached with a length equal to the distance from the attachment surface of the bracket 4 to the attachment surface of the bracket 5 in the Z direction.

[0072] As a result, the core material 2 is stable in all of the X, Y, and Z directions. In this state, drill screws 44, 54 are inserted into the insertion holes 431, 531 of the second arm portions 43, 53 of the brackets 4, 5, respectively, and drilled into the partition portion 25 of the core material 2 and screwed into them. This fastens and fixes both ends of the core material 2 in the Z direction to the brackets 4, 5. The drill screws 44 and 54 may also be inserted into the insertion holes 421 and 521 of the first arm portions 42 and 52 to fasten and fix them to the inner bottom surface 261 of the recessed portion 26 .

[0073] Next, as shown in FIG. 11, the other cover member 3 is attached to the core member 2. The cover member 3 is attached to the core material 2 from the +X side. The cover member 3 is attached with the inner surface of the flat portion 31 facing the first surface 21 of the core material 2 and with the inner surfaces of the first opposing surface portion 32 and the second opposing surface portion 33 sliding against the second surface 22 and the fourth surface 24, respectively. At this time, the cover member 3 is moved in the -X direction until the protruding strips 611, 621 of the temporary fastening structures 61, 62 fit into the recessed grooves 612, 622. As a result, the recessed portion 26 and the notch 27 are covered by the other cover member 3.

[0074] In the above state, the core material 2 is fixed to the opening of the body via a plate material, but each cover member 3 is only temporarily attached to the core material 2 and is not fixed. However, as shown in Figure 9, one vertical frame of the frame body 123 of the first sash 121 of the corner sash 120 is fastened and fixed to the third surface 23 of the core material 2 by a screw that penetrates the flat portion 31 of the cover member 3, thereby fixing one cover member 3 to the core material 2.

[0075] Similarly, one vertical frame of the frame body 126 of the second sash 122 of the corner sash 120 is fastened and fixed to the second surface 22 of the core material 2 by a screw that penetrates the first opposing surface portion 32 of the other cover member 3, thereby fixing the other cover member 3 to the core material 2. The boundary between the two cover members 3 on the indoor side is covered by one of the vertical frames of the frame main body 126. Furthermore, although the boundary between the two cover members 3 on the outdoor side is not covered, this boundary faces the exterior window and is therefore hardly exposed to the public's eyes from either the indoor or outdoor side. Therefore, in the case where the surface of each cover member 3 of the support structure 1 is given a decorative feature, the decorative feature is not impaired and a high level of design can be maintained.

[0076] [Application of a support structure as a corner mullion for an inside corner] The support structure 1 shown in Figs. 8 to 11 is exemplified as being applied to a corner mullion at an outside corner, but is not limited to this, and the support structure 1 can also be applied to a corner mullion at an inside corner. The following describes the support structure 1 applied to a corner mullion at an inside corner with reference to Fig. 12. Fig. 12 is a cross-sectional view of the support structure 1 applied to a corner mullion at an inside corner, taken along the first horizontal direction S2 and the first horizontal direction T2.

[0077] Even in the case of an inside corner, the corner sash 120 of the support structure 1 is installed so that its Z direction is parallel to the vertical direction V, its X direction is parallel to the first horizontal sight direction S2 and the second horizontal sight direction T3, and its Y direction is parallel to the second horizontal sight direction S3 and the first horizontal sight direction T2. In addition, one vertical frame of the frame body 126 of the second sash 122 of the corner sash 120 is fastened and fixed to the fourth surface 24 side of the core material 2 with screws, and one vertical frame of the frame body 123 of the first sash 121 of the corner sash 120 is fastened and fixed to the third surface 23 side of the core material 2 with screws.

[0078] In this case as well, the support structure 1 is fixed via a plate material fixed in a frame shape to the inner edge of the opening. The ends of two long plates of equal width are cut at 45° and joined together at a right angle, but to correspond to the inside corner, the boundary at the ends of the long plates is oriented perpendicular to the diagonal line L1 in Figure 9, as shown by the diagonal line L2 in Figure 11. The support structure 1 as a corner mullion is installed so that the corner of the core material 2 corresponding to the inside corner is located on the above-mentioned oblique line L2 when viewed from the Z direction. In other words, when viewed from the Z direction, the oblique line L2 passes through the corners of the first surface 21 and the second surface 22 of the core material 2 at an angle of 45° to both surfaces. The four insertion holes 411, 511 through which the screws 45, 55 provided in the base plate portions 41, 51 of the brackets 4, 5 are inserted are all formed at positions that avoid the diagonal line L2. Therefore, even when the support structure 1 is used as a corner mullion for an inside corner, when attaching the brackets 4, 5 to the main body, it is possible to avoid a decrease in the holding force of the support structure 1 due to one of the screws 45, 55 being screwed into the boundary between two long boards.

[0079] [Technical Effects of the Embodiments of the Invention] In the above-mentioned support structure 1, the first arms 42, 52 of each bracket 4, 5 can be fastened and fixed to the inner bottom surface 261 of the recessed portion 26 of the core material 2, and the second arms 43, 53 can be fastened and fixed to the partition portion 25 inside the core material 2 through the cutout 27.Therefore, when the support structure 1 is attached to the attachment surface of the object to be attached via the brackets 4, 5, the first arms 42, 52 and second arms 43, 53 of each bracket 4, 5 do not protrude outside the core material 2, and the entire support structure 1 can be maintained in a rectangular pillar shape. Therefore, the support structure 1 can be used for multiple purposes as a sash component. In particular, the support structure 1 can be suitably used for both cross-sections and corner mullions. This allows the components of each sash to be standardized, thereby reducing manufacturing costs.

[0080] Furthermore, each bracket 4, 5 has screw insertion holes 421, 521, 431, 531 formed in both the first arm 42, 52 and the second arm 43, 53. This makes it possible to select a support state for the core material 2 using the first arm 42, 52 that corresponds to the load required when the support structure 1 is applied to a mullion, or a support state for the core material 2 using the second arm 43, 53 that corresponds to the load required when the support structure 1 is applied to a corner mullion, making it possible to provide a support structure 1 that can be suitably used for both mullion and corner mullion applications.

[0081] Furthermore, since the resin cover member 3 covers the surfaces of the first face 21 to the fourth face 24 of the core material 2, it is possible to improve the heat insulating properties of the sash. This makes it possible to suitably use the support structure 1 as a component of the sash of an inner window of a double-glazed window, which requires high heat insulating properties. Furthermore, since the resin cover member 3 covers the surfaces of the first surface 21 to the fourth surface 24 of the core material 2, it becomes easier to give the support structure 1 a design, contributing to improving the overall design of the sash.

[0082] In addition, since the notch 27 is formed on the second surface 22 facing the partition portion 25 of the core material 2 of the support structure 1, when connecting the core material 2 to each bracket 4, 5, the core material 2 can be moved approximately linearly relative to the second arm portions 43, 53, causing the second arm portions 43, 53 to abut against the partition portion 25, making it possible to easily install the support structure 1.

[0083] In addition, the two brackets 4 and 5 are configured such that the planes of the first arm portions 42 and 52 and the planes of the second arm portions 43 and 53 are perpendicular to each other. Therefore, depending on whether the core material 2 is connected and supported by the first arm portions 42, 52 or the second arm portions 43, 53, the width in the direction with the highest load-bearing capacity can be increased, making it possible to expand the range of applicability of the support structure 1 as a component material for the sash. In particular, the load-bearing capacity of the support structure 1 can be suitably applied to crossbeams and corner mullions.

[0084] In addition, the support structure 1 has two cover members 3, which have temporary fastening structures 61, 62 to prevent the cover members 3 from falling off the core material 2. Therefore, during the installation work of the support structure 1, the temporary fastening state can be maintained until the cover members 3 are fixed, and there is no need to hold down the cover members 3, which greatly improves workability.

[0085] The temporary fixing structures 61, 62 of the cover member 3 have ridges 611, 621 formed on the cover member 3 along the core material 2, and recessed grooves 612, 622 formed on the core material 2 along the core material 2, so that the ridges 611, 621 can be easily fitted into the recessed grooves 612, 622 by utilizing the flexibility of the cover member 3. This makes it possible to further improve the workability in the installation work of the pillar structure 1.

[0086] Furthermore, in the temporary fixing structures 61, 62, the ridges 611, 621 have a triangular cross section and the recessed grooves 612, 622 have a rectangular cross section, so even if the ridges 611, 621 are bent due to the processing precision of the resin, this can be tolerated and they can be fitted into the recessed grooves 612, 622. Therefore, the temporary fixing state of the cover member 3 can be maintained in an appropriate manner.

[0087] Furthermore, since one of the cover members 3 covers the concave portion 26 and the cutout 27 of the core material 2, during the installation work of the support structure 1, the cover member 3 that does not cover the concave portion 26 and the cutout 27 can be attached to the core material 2 before connecting the core material 2 to the brackets 4, 5, making it possible to efficiently proceed with the installation work of the support structure 1.

[0088] Furthermore, since the two cover members 3 are made of the same material, it is possible to reduce the manufacturing cost of the support structure 1 by using common parts.

[0089] Furthermore, since the two cover members 3 have an open cross-sectional shape having a flat portion 31 and first and second opposing surface portions 32, 33 raised from both ends thereof, they can be easily attached to the core material 2 from the open side of the cover member 3, which further improves workability in the installation work of the support structure 1. Furthermore, the cover member 3 can be easily attached to the core material 2 whose both ends are already connected to the brackets 4 and 5.

[0090] Furthermore, the cover member 3 has the protrusions 611, 621 of the two temporary fixing structures 61, 62 provided on the first opposing surface portion 32 and the second opposing surface portion 33, respectively, and the respective protrusions 611, 621 are provided at positions at different distances from the flat portion 31. Therefore, if the first opposing surface portion 32 and the second opposing surface portion 33 of the cover member 3 are attached to the core material 2 in an orientation opposite to the proper attachment state, they will not be able to fit into the recessed grooves 612, 622, which allows the installation worker to quickly recognize that the orientation of the cover member 3 is incorrect. Therefore, it is possible to reduce installation errors of the cover member 3 and also to easily check the installation direction of the cover member 3, thereby improving the workability of the installation work of the support structure 1.

[0091] Furthermore, the core material 2 has an engaging extension 262 formed on the inner edge of the recessed portion 26 that is connected to the first surface 21. Therefore, when installing the support structure 1, the core material 2 can be engaged with the first arm portions 42, 52 of the brackets 4, 5, eliminating the need to hold the core material 2 tightly, thereby greatly improving workability. Furthermore, even after the support structure 1 is attached, the locking extension 262 can bear the load in a predetermined direction, and the attachment strength of the support structure 1 can be improved.

[0092] In addition, the core material 2 has the partition wall 25 formed at a position where the distance from the partition wall 25 to the second surface 22 and the distance from the partition wall 25 to the fourth surface 24 are different. In this case, the Y-direction width of the base plate portions 41, 51 of each bracket 4, 5 can be set to a width equivalent to the distance from the partition portion 25 to the fourth surface 24, which is farther away, and it is possible to ensure a larger area for the base plate portions 41, 51 than when the distances from the partition portion 25 to the second surface 22 and the fourth surface 24 are equal. Therefore, it is possible to ensure a greater attachment strength to the attachment surfaces of the brackets 4 and 5, and it is possible to improve the attachment strength of the support structure 1.

[0093] In addition, when each bracket 4, 5 is connected to the core material 2, when viewed from the Z direction, all insertion holes 411, 511 are positioned to avoid the diagonal line L1 that passes through the corner between the first surface 21 and the fourth surface 24 at an angle of 45°. Therefore, when the support structure 1 is used as a corner mullion at an external corner, fastening and fixing can be performed using screws passed through the insertion holes 411, 511, avoiding the boundary line where the two plate materials where the support structure 1 is attached meet, making it possible to maintain high mounting strength of each bracket 4, 5.

[0094] In addition, when each bracket 4, 5 is connected to the core material 2, when viewed from the Z direction, all insertion holes 411, 511 are positioned to avoid the diagonal line L2 that passes through the corner between the first surface 21 and the second surface 22 at an angle of 45°. Therefore, when the support structure 1 is used as a corner mullion for an inside corner, fastening and fixing can be performed using screws passed through the insertion holes 411, 511, avoiding the boundary line where the two plate materials where the support structure 1 is attached meet, making it possible to maintain high mounting strength of each bracket 4, 5.

[0095] [others] The embodiments of the present invention have been described above. However, the present invention is not limited to the above embodiments. For example, in the embodiments, a component integrally formed from a single member may be replaced with a component divided into multiple members that are connected or fixed to each other. Furthermore, a component formed by connecting multiple members may be replaced with a component integrally formed from a single member. In addition, the details shown in the embodiments may be modified as appropriate without departing from the spirit of the invention.

[0096] For example, in the above-described support structure 1, the configuration in which the notch 27 is formed on the second surface 22 has been exemplified, but the present invention is not limited to this, and the notch 27 can also be formed on the first surface 21. Furthermore, when the second arms 43, 53 are configured to abut against the partition wall 25 from the +Y side, the notch 27 may be formed in the third surface .

[0097] Although the support structure 1 has been illustrated as having both ends of the core material 2 fixed to the object to be attached by the brackets 4 and 5, the present invention is not limited to this. For example, either end of the core material 2 may be fixed to the object to be attached by a member other than the bracket 4 or 5. In this case, the notch 27 does not need to be formed at the end of the core material 2 that is fixed to the object by a member other than the bracket 4 or 5. Alternatively, both ends of the core material 2 may be fixed to the object to which it is attached using a single bracket having a length substantially equal to that of the core material 2.

[0098] Furthermore, the support structure 1 has been exemplified as having two cover members 3, but this is not limiting. For example, all four sides of the core material 2 may be covered with a single cover member having a rectangular cross section and a single slit along its entire length. [Explanation of symbols]

[0099] 1 Post structure 2 Core material 3 Cover member 4,5 bracket 21 Front page 22 Second side 23 Third side 24 Fourth side 25 Bulkhead 26 Concave part 261 Inner bottom surface 262 Locking extension 27 Cutout 31 Plane part 32 First facing surface part 33 Second facing surface part 41,51 Circuit board 411,511 Insertion hole 42,52 First arm 421,521 Insertion hole 43,53 Second arm 431,531 Insertion hole 44,54 Drill screws 45,55 screws 61,62 Temporary fastening structure 611,621 Convex strips 612,622 groove 110 step window sash 111 Frame body (object to be attached) 112~115 Shoji screen 116 Middle bottom frame 117 Middle upper frame 120 Corner sash 121 First Sash 122 Second Sash 123,126 Frame body 124, 125, 127, 128 Shoji screens F Mounting direction L1,L2 diagonal line N Gap S1 Horizontal detection S2 First horizontal finding direction S3 Second horizontal search direction T1 Prospective direction T2 First prospective direction T3 Second prospective direction V vertical direction

Claims

1. A core material having a rectangular cross section; a resin cover member that covers the four surfaces of the core material excluding both end cross sections; a bracket for fixing at least one end of the core material to an object to be attached; A partition wall is formed inside the core material over the entire length, A first surface of the four surfaces of the core material is formed with a flat recessed portion along its entire length, the bracket has a base portion facing the attachment object, a first arm portion rising from the base portion and facing the flat surface of the recessed portion, and a second arm portion rising from the base portion and facing the flat surface of the partition wall, The first arm portion has a through-hole for a screw to be fastened to the flat surface of the recessed portion, The second arm portion has a through-hole for a screw to be fastened to the partition wall portion, A support structure characterized in that a notch is formed on one end of the core material, on any of the four sides, for passing the second arm portion of the bracket through the inside of the core material.

2. The support structure according to claim 1, characterized in that the notch is formed in a second surface of the core material adjacent to the first surface, the second surface facing the partition wall portion.

3. The support structure according to claim 2 , wherein the bracket has a plane of the first arm portion and a plane of the second arm portion that are perpendicular to each other.

4. The cover member is composed of two cover members, each of which covers a surface of the core material over multiple surfaces, 2. The support structure according to claim 1, further comprising a temporary fastening structure between each of the cover members and the core member to prevent the cover members from falling off the core member.

5. The support structure described in claim 4, characterized in that the temporary fixing structure includes a convex strip formed on one of the cover member and the core material along the core material, and a concave groove formed on the other of the cover member and the core material along the core material.

6. The groove has a rectangular cross section and is formed in the core material, The support structure according to claim 5, wherein the ridge has a triangular cross section and is formed on the cover member.

7. The support structure according to claim 4 , wherein one of the cover members covers the recessed portion of the core material and the notch.

8. The support structure according to claim 5, wherein the two cover members are made of the same material.

9. The support structure according to claim 8, wherein the two cover members have an open cross-sectional shape having one flat portion and a pair of opposing flat portions that are bent and raised from both ends of the flat portion.

10. The support structure according to claim 9, characterized in that the protrusions are provided on each of the pair of opposing surface portions, and the protrusions on each opposing surface portion are provided at positions different distances from the flat portion.

11. The support structure according to claim 1 , wherein an engaging extension portion is formed on an inner edge of the recessed portion and is continuous with the first surface.

12. The pillar structure described in claim 1, characterized in that the partition portion is formed at a position where the distance from one of the four surfaces of the core material that faces the partition portion is different from the distance from the other of the four surfaces of the core material that faces the partition portion.

13. When the surface of the core material opposite to the first surface is defined as a third surface and the surface of the core material opposite to the second surface is defined as a fourth surface, The support structure described in claim 2, characterized in that the bracket has a plurality of screw insertion holes formed in the base portion for fastening and fixing to the object to be attached, and when the bracket is connected to the core material and viewed from a direction along the core material, all of the insertion holes are arranged to avoid a diagonal line passing through the corner between the first surface and the fourth surface at an angle of 45°.

14. When the surface of the core material opposite to the first surface is defined as a third surface and the surface of the core material opposite to the second surface is defined as a fourth surface, The support structure described in claim 2, characterized in that the bracket has a plurality of screw insertion holes formed in the base portion for fastening and fixing to the attachment object, and when the bracket is connected to the core material and viewed from a direction along the core material, all of the insertion holes are arranged to avoid a diagonal line passing through the corner between the first surface and the second surface at an angle of 45°.

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