Joining structure of profiled materials and joinery

Abstract

To ensure water cut-off performance of joint part with a second shape even if a first shape has processed parts or joint lines on its depth surface.SOLUTION: In a joint structure of shapes in which the edge end face 13a of the lower frame 13 is joined with a sealing member 2 interposed on the depth surface 11a of the vertical frame 11 which has processed parts 24A, 25A, 34A or a joint part 11b, super absorbent resin 3 is used that has swelling properties in the area between the depth surface 11a of the vertical frame 11 and the sealing member 2, including at least the processed parts 24A, 25A, 34A or the joint part 11b.SELECTED DRAWING: Figure 4

Description

Technical Field

[0001] The present invention relates to a joining structure of profile members and a fitting.

Background Art

[0002] For a frame body formed by joining a plurality of frame members (profile members), in consideration of water stoppage, for example, a sheet-like sealing member is disposed between a prospective surface on the inner peripheral side of a vertical frame and a small end surface of a horizontal frame (see, for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] By the way, in many cases, thin plate-like fin portions are provided so as to protrude from the prospective surface of the vertical frame. Therefore, when joining the small end surface of the horizontal frame to the prospective surface of the vertical frame, the fin portions at the portion where the small end surface joins are pre-cut. If the fin portions are completely cut, the prospective surface of the vertical frame becomes flat, so there is no problem in joining with the horizontal frame. However, if the fin portions are not completely cut due to processing errors or the like, a convex portion remains on the prospective surface of the vertical frame. Therefore, there is a concern that a gap may occur at the joint even when the small end surface of the horizontal frame is joined to the prospective surface of the vertical frame via the sealing member, resulting in a situation where the water stoppage performance is impaired. Conversely, if the cutting process becomes excessive, a recess is formed on the prospective surface of the vertical frame, which also causes a gap to remain at the joint when the small end surface of the horizontal frame is joined via the sealing member.

[0005] On the other hand, in joinery designed with thermal insulation in mind, some frames utilize a resin bridge material interposed between the interior and exterior metal parts of the vertical and horizontal frames that make up the frame. In this type of frame, the joint between the metal part and the bridge material may appear as a recessed groove on the face surface. This recessed groove can cause a gap to form at the joint when the end face of the horizontal frame is joined to the face surface of the vertical frame via a sealing member.

[0006] Furthermore, the above-mentioned problem can occur not only when joining the end face of a horizontal frame to the face of a vertical frame, but also when joining the end face of a second profile to the face of a first profile that has a processed portion or joint portion.

[0007] In view of the above circumstances, the present invention aims to provide a joint structure for profiled materials and a joinery that can ensure watertightness at the joint with the second profiled material even when a processed portion or joint portion is provided on the visible surface of the first profiled material. [Means for solving the problem]

[0008] To achieve the above objective, the profile joining structure according to the present invention is a profile joining structure in which the end face of a second profile is joined with a sealing member interposed on the face surface of a first profile having a processed portion or a joint portion, characterized in that a swellable superabsorbent resin is disposed between the face surface of the first profile and the sealing member in a region including the processed portion or the joint portion. [Effects of the Invention]

[0009] According to the present invention, even if a gap occurs at the joint when a processed portion or joint portion is provided on the face surface of the first profile and the end face of the second profile is joined via a sealing member, this gap will be sealed when the superabsorbent resin absorbs water and swells. Therefore, it is possible to ensure watertightness between the first profile and the second profile. [Brief explanation of the drawing]

[0010] [Figure 1]This is a view from the interior side of a door or window constructed using the joint structure that is an embodiment of the present invention. [Figure 2] Figure 1 conceptually shows the main parts of the joinery, with (a) being an exploded view showing the joint between the vertical frame and the upper and lower frames, and (b) being a view of the vertical frame's face. [Figure 3] Figure 1 shows the main parts of the joinery, with (a) being an exploded vertical cross-sectional view showing the lower end of the vertical frame and the lower frame, (b) being a view showing the lower end of the vertical frame after processing, (c) being a view showing the lower end of the vertical frame with a sealing member attached, and (d) being a vertical cross-sectional view showing the lower frame joined to the lower end of the vertical frame. [Figure 4] Figure 1 shows the main parts of the joinery, (a) is a cross-sectional view of the vertical frame, (b) is a cross-sectional view showing the vertical frame with the fin portion protruding from the inner surface removed, (c) is a cross-sectional view showing the vertical frame with the sealing member adhered to the inner surface, and (d) is a cross-sectional view showing the lower frame's end face joined to the inner surface via the sealing member. [Figure 5] Figure 1 shows the main parts of the joinery; (a) is an enlarged cross-sectional view of the main part immediately after the end face of the lower frame is joined to the inner surface of the vertical frame via a sealing member, and (b) is an enlarged cross-sectional view of the main part after the superabsorbent resin mixed into the adhesive layer of the sealing member has absorbed water and expanded. [Figure 6] Figure 1 shows the main parts of the joinery; (a) is an enlarged cross-sectional view of the main part immediately after the end face of the lower frame is joined to the inner surface of the vertical frame via a sealing member, and (b) is an enlarged cross-sectional view of the main part after the superabsorbent resin mixed into the adhesive layer of the sealing member has absorbed water and expanded. [Figure 7] This shows a modified example of the present invention, where (a) is an enlarged exploded cross-sectional view of the main part showing the state before a sealing member, which has a powdered superabsorbent resin distributed on its adhesive surface, is bonded to the inner surface of the vertical frame, (b) is an enlarged cross-sectional view of the main part showing the state after the sealing member has been bonded to the inner surface of the vertical frame, and (c) is a cross-sectional view showing the state after the end face of the lower frame has been joined to the inner surface of the vertical frame via the sealing member. [Figure 8]This shows a modified example of the present invention, where (a) is an enlarged exploded cross-sectional view of the main part showing the state in which a coating resin mixed with a superabsorbent resin has been applied to the inner surface of the vertical frame, (b) is an enlarged cross-sectional view of the main part showing the state in which a sealing member has been adhered to the inner surface of the vertical frame, and (c) is a cross-sectional view showing the state in which the end face of the lower frame has been joined to the inner surface of the vertical frame via the sealing member. [Modes for carrying out the invention]

[0011] The following describes in detail preferred embodiments of the profile joining structure and joinery according to the present invention with reference to the attached drawings. For convenience, the terms "depth direction" and "face direction" may be used below. The depth direction is the direction along the depth of the joinery, as indicated by arrow A in the figure. The surface along the depth direction may be referred to as the depth surface. The face direction is the direction along the vertical direction perpendicular to the depth direction, in the case of a frame that extends horizontally, such as a bottom frame. In the case of a frame that extends vertically, such as a vertical frame, the face direction is the direction along the horizontal direction perpendicular to the depth direction. The surface along the face direction may be referred to as the face surface.

[0012] Figures 1 to 4 show a joinery piece to which the profile joining structure of the present invention is applied. The joinery piece illustrated here is called a sliding window, which has an interior sash 1A on the interior side and an exterior sash 1B on the exterior side inside a frame 10. The frame 10 is constructed by joining the end faces 12a of the upper frame (second profile: horizontal frame) 12 and the end faces 13a of the lower frame (second profile: horizontal frame) 13 to the inner circumference faces 11a of the left and right vertical frames (first material) 11 via sealing members 2, and then connecting them to each other from this state. The joining structure between the vertical frame 11 and the upper frame 12 and the joining structure between the vertical frame 11 and the lower frame 13 are almost the same. For this reason, the joining structure between the vertical frame 11 and the lower frame 13 will be described below.

[0013] As shown in Figure 4(a), the vertical frame 11 to be joined is formed by connecting an inner vertical frame section 11A on the indoor side and an outer vertical frame section 11B on the outdoor side with two bridge members 11C. Each bridge member 11C is molded from a resin with heat insulating properties. The inner vertical frame section 11A and the outer vertical frame section 11B are extruded profiles formed from a metal such as an aluminum alloy. In this embodiment, the inner vertical frame section 11A is formed by integrally molding an inner vertical base plate section 21, an inner vertical bridge connecting section 22, an outer inner vertical fin section 23, an inner first inner vertical fin section 24, and an inner second inner vertical fin section 25, while the outer vertical frame section 11B is formed by integrally molding an outer vertical base plate section 31, an outer vertical bridge connecting section 32, an outer outer vertical fin section 33, and an inner outer vertical fin section 34.

[0014] The inner vertical base plate portion 21 is a flat plate shape that extends along the depth direction. The inner vertical bridge connecting portion 22 extends outward from the outer edge of the inner vertical base plate portion 21. The outer inner vertical fin portion 23 extends outward from the inner edge of the inner vertical base plate portion 21 along the visibility direction, and then bends outward. The inner first inner vertical fin portion 24 extends inward from the inner edge of the inner depth surface of the inner vertical base plate portion 21 along the visibility direction. A pocket portion 24a is provided at the extending edge of the inner first inner vertical fin portion 24 that faces outward, allowing for the attachment of a sealing material (not shown) between it and the sashes 1A and 1B. The inner second inner vertical fin portion 25 extends inward from the outer portion of the inner depth surface of the inner vertical base plate portion 21 along the visibility direction.

[0015] The outer vertical base plate portion 31, like the inner vertical base plate portion 21, is a flat plate extending along the depth direction. The outer vertical bridge connecting portion 32 extends outward along the visibility direction from the indoor-facing edge of the outer vertical base plate portion 31. The outer peripheral outer vertical fin portion 33 extends outward from the outdoor-facing edge of the outer vertical base plate portion 31 and then bends inward towards the interior. The inner peripheral outer vertical fin portion 34 extends inward from the outdoor-facing edge on the inner-circumferential surface of the outer vertical base plate portion 31.

[0016] The inner vertical frame portion 11A and the outer vertical frame portion 11B having the above-described configuration are connected by a bridge member 11C between the inner vertical bridge connecting portion 22 and the outer vertical bridge connecting portion 32 facing each other. The inner vertical frame portion 11A and the outer vertical frame portion 11B connected by the bridge member 11C have the inner vertical substrate portion 21, the outer vertical substrate portion 31, and the bridge member 11C on the inner peripheral side connecting them located on substantially the same plane, constituting a prospective surface 11a on the inner peripheral side of the vertical frame 11. As is clear from the figure, on the prospective surface 11a of this vertical frame 11, the inner peripheral inner first vertical fin portion 24, the inner peripheral inner second vertical fin portion 25, and the inner peripheral outer vertical fin portion 34 project toward the inner peripheral side. The protruding dimensions of the inner peripheral inner first vertical fin portion 24, the inner peripheral inner second vertical fin portion 25, and the inner peripheral outer vertical fin portion 34 are substantially equal to each other. Further, on the prospective surface 11a of the vertical frame 11, the joint portions 11b between the inner vertical frame portion 11A and the bridge member 11C and the joint portions 11b between the outer vertical frame portion 11B and the bridge member 11C appear as concave grooves.

[0017] On the other hand, as shown in Fig. 3(a), the lower frame 13 to be joined is formed by connecting between an inner lower frame portion 13A on the indoor side and an outer lower frame portion 13B on the outdoor side by two bridge members 13C. The bridge member 13C is formed of a resin having heat insulation properties, similar to that of the vertical frame 11. The inner lower frame portion 13A and the outer lower frame portion 13B are respectively extrusion-molded members formed of a metal such as an aluminum alloy. The inner lower frame portion 13A of the present embodiment is integrally formed with an inner hollow body 41, an outer peripheral inner first lower fin portion 42, an outer peripheral inner second lower fin portion 43, an inner peripheral inner lower fin portion 44, and an inner rail portion 45, and the outer lower frame portion 13B is integrally formed with an outer lower substrate portion 51, an outer lower bridge connecting portion 52, an outer peripheral outer lower fin portion 53, and an outer rail portion 54.

[0018] The inner hollow body 41 has dimensions along the depth direction that are approximately equal to the dimensions from the inner first longitudinal fin portion 24 to the inner second longitudinal fin portion 25 provided on the vertical frame 11, and has a roughly rectangular hollow cross-section. The inner hollow body 41 is provided with two screw holes 41a. The screw holes 41a are provided on the lower surface of the upper wall 41b and the lower surface of the lower wall 41c that constitute the inner hollow body 41, respectively. The outer first lower fin portion 42 extends outward along the visibility direction from the outer and interior corner of the inner hollow body 41, and then bends outward. The outer second lower fin portion 43 extends outward along the visibility direction from the outer and exterior corner of the inner hollow body 41, and then bends inward. The outer circumference of the first inner lower fin portion 42 and the outer circumference of the second inner lower fin portion 43 is approximately equal to the outer circumference of the other. The inner circumference of the inner lower fin portion 44 extends inward from the inner circumference and interior side corner of the inner hollow body 41 along the visible direction. The extended edge of the inner circumference of the inner lower fin portion 44 that faces the exterior is provided with a pocket portion 44a into which a sealing material (not shown) between it and the shoji screens 1A and 1B can be attached. The inner rail portion 45 extends outward from the inner circumference and exterior side corner of the inner hollow body 41 along the visible direction. The outer circumference of the inner lower fin portion 44 and the inner rail portion 45 is approximately equal to the other.

[0019] The outer lower substrate portion 51 is in the form of a flat plate that extends gradually downward along the expected direction and toward the outside of the room. There are two screw holes 51a provided on the lower surface of the outer lower substrate portion 51. The outer lower bridge connecting portion 52 extends along the finding direction from the edge on the indoor side of the outer lower substrate portion 51 to the inner and outer circumferences. The portion extending to the outer circumferential side of the outer lower bridge connecting portion 52 has an extending edge that is bent toward the outside of the room. In the illustrated example, the extending dimension of the outer lower bridge connecting portion 52 is substantially the same as the dimension along the finding direction of the inner hollow body 41, and the extending dimension from the outer lower substrate portion 51 to the inner circumferential side and the extending dimension to the outer circumferential side are substantially equal to each other. The outer circumferential outer lower fin portion 53 extends to the outer circumference along the finding direction from the edge on the outdoor side of the outer lower substrate portion 51 and then bends toward the inside of the room. The protruding dimension of the outer circumferential outer lower fin portion 53 is substantially equal to the protruding dimension to the outer circumferential side of the outer lower bridge connecting portion 52. The outer rail portion 54 extends to the inner circumference along the finding direction from the portion located between the outer lower bridge connecting portion 52 and the outer circumferential outer lower fin portion 53 on the expected surface on the inner circumferential side of the outer lower substrate portion 51.

[0020] The inner lower frame portion 13A and the outer lower frame portion 13B having the above-described configuration are connected by a bridge member 13C between the portion extending from the finding surface facing the outside of the room of the inner hollow body 41 to the second lower fin portion 43 inside the outer circumference and the outer lower bridge connecting portion 52. The inner lower frame portion 13A and the outer lower frame portion 13B connected by the bridge member 13C are in a state where the outer peripheral edge of the first lower fin portion 42 inside the outer circumference, the outer peripheral edge of the second lower fin portion 43 inside the outer circumference, the outer peripheral edge of the outer lower bridge connecting portion 52, and the outer peripheral edge of the outer circumferential outer lower fin portion 53 are located on the same plane along the expected direction.

[0021] When joining the end face 13a of the lower frame 13 to the inner circumference surface 11a of the vertical frame 11 as described above, first, as shown in Figures 3(b) and 4(b), processing is performed to cut off the inner first longitudinal fin portion 24, the inner second longitudinal fin portion 25, and the inner outer longitudinal fin portion 34 that protrude from the inner circumference surface 11a of the vertical frame 11. More specifically, for the inner first longitudinal fin portion 24 and the inner second longitudinal fin portion 25, the processed portions 24A and 25A located in the area where the inner lower frame portion 13A of the lower frame 13 abuts are cut off, and for the inner outer longitudinal fin portion 34, the processed portion 34A located in the area where the outer lower frame portion 13B abuts is cut off. The end face 13a of the lower frame 13 is cut along the direction perpendicular to the longitudinal direction.

[0022] Next, as shown in Figures 3(c) and 4(c), a sealing member 2, sized to cover the cross-section of the lower frame 13, is bonded to the visible surface 11a of the vertical frame 11, and the lower frame 13 is joined to the vertical frame 11 with the end face 13a in contact with the area of ​​the sealing member 2. When bonding the sealing member 2, it is necessary to cover the processed portions 24A, 25A, and 34A of the vertical frame 11 as described above. From this state, the vertical frame 11 and the lower frame 13 can be connected by screwing screws (not shown) into the screw holes 41a and 51a of the lower frame 13 via the vertical frame 11.

[0023] As described above, as shown in Figure 5(a), the visible surface 11a of the vertical frame 11 has grooves at the joint portion 11b between the inner vertical frame portion 11A and the bridge material 11C, and at the joint portion 11b between the outer vertical frame portion 11B and the bridge material 11C. Also, as shown in Figure 6(a), if at least one of the inner first vertical fin portion 24, inner second vertical fin portion 25, and inner outer vertical fin portion 34 is not completely removed, a protrusion 11c will be provided on the visible surface 11a of the vertical frame 11. As a result, it becomes difficult to adhere the sealing member 2 to the visible surface 11a of the vertical frame 11 without any gaps, and there is a concern that water leakage may occur between them even after the lower frame 13 is connected.

[0024] Therefore, in this embodiment, the sealing member 2 is made of a sheet-like base material 2a with an adhesive layer 2b on one surface, and a super absorbent polymer (SAP) 3 is kneaded into this adhesive layer 2b. The super absorbent polymer 3 has the function of expanding when it absorbs water and retaining that water. The super absorbent polymer 3 may be kneaded uniformly over the entire surface of the adhesive layer 2b of the sealing member 2, or it may be kneaded only in the portion corresponding to the groove of the joint portion 11b and the processed portions 24A, 25A, and 34A of the inner first longitudinal fin portion 24, inner second longitudinal fin portion 25, and inner outer longitudinal fin portion 34, as shown in the dashed area S in Figure 3(c). In this case, it is not necessary to place the superabsorbent resin 3 along the entire length of the groove in the joint portion 11b or the processed portions 24A, 25A, and 34A. It is sufficient to place the superabsorbent resin 3 at a position that breaks the continuity of the groove in the joint portion 11b or the processed portions 24A, 25A, and 34A, and that contacts the end face 13a of the lower frame 13 (a position that is not a hollow part).

[0025] As described above, when a superabsorbent resin 3 is mixed into the adhesive layer 2b of the sealing member 2, even if a gap g exists between the vertical frame 11 and the sealing member 2 when the frame 10 is assembled, if water such as rainwater enters this gap g, the superabsorbent resin 3 mixed into the adhesive layer 2b will absorb the water and expand. As a result, as shown in Figures 5(b) and 6(b), the gap g between the vertical frame 11 and the lower frame 13 will be filled by the expanded superabsorbent resin 3, making it possible to prevent water from passing through.

[0026] In the above-described embodiment, the superabsorbent resin 3 is mixed into the adhesive layer 2b of the sealing member 2, so there is no need to separately arrange the superabsorbent resin 3, and there is no risk of complicating the assembly of the frame 10. However, as a method of arranging the superabsorbent resin 3 between the sealing member 2 and the visible surface 11a of the vertical frame 11, it is not necessarily required to mix it into the adhesive layer 2b of the sealing member 2. As shown in Modification 1 in Figure 7 and Modification 2 in Figure 8, it is also possible to arrange the superabsorbent resin 3 between the visible surface 11a of the vertical frame 11 and the sealing member 2 without mixing it into the adhesive layer 2b of the sealing member 2.

[0027] In other words, in Modification 1 shown in Figure 7, the superabsorbent resin 3 in powder form is directly distributed on the adhesive surface of the sealing member 2. In this case as well, the superabsorbent resin 3 may be distributed uniformly over the entire adhesive surface of the sealing member 2, or it may be distributed only at positions that break the continuity of the grooves of the joint portion 11b and the processed portions 24A, 25A, 34A of the fin portions 24, 25, 34. In Modification 2 shown in Figure 8, the coating resin 4, which is a mixture of the superabsorbent resin 3, is applied to the visible surface 11a of the vertical frame 11, and then the lower frame 13 is joined via the sealing member 2. In these modified examples 1 and 2, as in the embodiment, even if a groove or gap g of the joint portion 11b is formed between the vertical frame 11 and the sealing member 2 when the frame 10 is assembled, if water such as rainwater enters this groove or gap g of the joint portion 11b, the superabsorbent resin 3 absorbs the water and expands. As a result, the groove or gap g of the joint portion 11b between the vertical frame 11 and the lower frame 13 is filled by the expanded superabsorbent resin 3, making it possible to prevent water from passing through. In modified examples 1 and 2, the same reference numerals are used for components that are the same as in the embodiment 1.

[0028] In the embodiments described above, sliding windows are used as examples, but the invention is not necessarily limited to sliding windows and can be applied to other types of joinery. The configuration of the vertical frame 11 and the lower frame 13, which are profiles, is described in detail, but the specific shapes of each are for illustrative purposes only and do not necessarily have to include bridge members 11C and 13C, thus not limiting the invention. Furthermore, although the end face 12a of the upper frame 12 and the end face 13a of the lower frame 13 are joined to the depth surface 11a of the vertical frame 11, the invention can also be applied when the end face of the vertical frame 11 is joined to the depth surface of the upper frame 12 or the lower frame 13. Moreover, the invention is not necessarily limited to the joining structure of the profiles (frames 11, 12, 13) that constitute the frame body 10, but can also be applied to the joining structure of the profiles (frames) that constitute the sash.

[0029] Furthermore, in the embodiment described above, the sealing member 2 is adhered to the visible surface 11a of the vertical frame 11, but the sealing member 2 does not necessarily need to have an adhesive layer 2b. That is, by arranging the vertical frame 11 so that the visible surface 11a is horizontal, and then placing the sealing member 2 on the visible surface 11a from this state, it is possible to join the end face 13a of the lower frame 13 to the visible surface 11a of the vertical frame 11 with the sealing member 2, which does not have an adhesive layer 2b, interposed between them.

[0030] As described above, the profile joining structure according to the present invention is a profile joining structure that joins the end face of a second profile with a sealing member interposed on the face surface of a first profile having a processed portion or a joint portion, characterized in that a highly absorbent resin having swelling properties is disposed between the face surface of the first profile and the sealing member in an area including the processed portion or the joint portion. According to this invention, even if a gap occurs at the joint when a processed portion or joint portion is provided on the face surface of the first profile and the end face of the second profile is joined via a sealing member, this gap will be sealed when the superabsorbent resin absorbs water and swells. Therefore, it is possible to ensure watertightness between the first profile and the second profile.

[0031] Furthermore, in the above-described joint structure for profiled materials, the present invention is characterized in that the sealing member has an adhesive layer on one surface of a sheet-like base material in which the superabsorbent resin is kneaded, and is bonded to the visible surface of the first profiled material via the adhesive layer. According to this invention, since a superabsorbent resin is mixed into the adhesive layer of the sealing material, the work of placing the superabsorbent resin is unnecessary.

[0032] Furthermore, in the above-described joint structure for profiled materials, the present invention is characterized in that the sealing member has the superabsorbent resin in powder form distributed on the adhesive surface with the first profiled material, and is in contact with the visible surface of the first profiled material via the adhesive surface. According to this invention, a superabsorbent resin can be distributed only to the necessary parts of the adhesive surface of the sealing member.

[0033] Furthermore, the present invention is characterized in that, in the above-described joint structure for profiled materials, a coating resin mixed with the superabsorbent resin is applied to the visible surface of the first profiled material, and the sealing member is adhered to the coating resin. According to this invention, since a coating resin mixed with a superabsorbent resin is applied, the work of positioning the superabsorbent resin can be easily carried out.

[0034] Furthermore, the joinery according to the present invention is characterized in that the end face of the horizontal frame is joined to the inner surface of the vertical frame by applying the above-described jointing structure of the profiled material. According to this invention, even if a gap occurs at the joint when a processed portion or joint portion is provided on the face surface of the first profile and the end face of the second profile is joined via a sealing member, this gap will be sealed when the superabsorbent resin absorbs water and swells. Therefore, it is possible to ensure watertightness between the first profile and the second profile. [Explanation of Symbols]

[0035] 2 sealing member, 2a base material, 2b adhesive layer, 3 superabsorbent resin, 4 coating resin, 11 vertical frame, 11a visible surface, 11b joint portion, 12 upper frame, 12a end face, 13 lower frame, 13a end face, 24A, 25A, 34A processed portion

Claims

1. A jointing structure for profile materials, wherein a sealing member is interposed on the visible surface of a first profile material having a processed portion or joint portion, and the end face of a second profile material is joined to it, A joint structure for profiled materials, characterized in that a highly absorbent resin having swelling properties is disposed between the visible surface of the first profiled material and the sealing member, in a region including at least the processed portion or the joint portion.

2. A jointing structure for profiles, wherein a sealing member is interposed on the visible surface of a first profile having a processed portion or a joint portion, and the end face of a second profile is joined to it, The sealing member has an adhesive layer on one surface of a sheet-like base material in which a highly absorbent resin with swelling properties is kneaded in at least the region including the processed portion or the joint portion, and is bonded to the visible surface of the first profile via the adhesive layer, characterized in that the profile joining structure is provided.

3. A jointing structure for profiles, wherein a sealing member is interposed on the visible surface of a first profile having a processed portion or a joint portion, and the end face of a second profile is joined thereto, The sealing member is characterized in that a highly absorbent resin in the form of a swellable powder is distributed in at least the area including the processed portion or the joint portion on the bonding surface with the first profile, and is in contact with the visible surface of the first profile via the bonding surface.

4. The superabsorbent resin is mixed with a coating resin provided on the face surface of the first profile, The joining structure for profiled material according to claim 1, characterized in that the sealing member is bonded to the coating resin.

5. A joinery piece characterized by joining the end face of a horizontal frame to the inner circumferential surface of a vertical frame by applying the joining structure of the profiled material described in any one of claims 1 to 4.

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