Connection structure between vertical center frame bone and horizontal frame, and curtain wall unit

Abstract

To suppress deterioration of sealing materials at the point where an end of a vertical center frame bone connects to a horizontal frame, ensuring stable water-stopping performance.SOLUTION: A connection structure between a vertical center frame bone and a horizontal frame comprises: a vertical center frame bone 8; a lower frame 6, being a horizontal frame to which an end 8B of the vertical center frame bone 8 is attached in a state where a gap is formed with a header 8G of the vertical center frame bone 8; a header material 30 attached to the header 8G of the vertical center frame bone 8 at a location facing outdoors to form a gap with the lower frame 6; a sealing material 42 filling the gap between the header material 30 and the lower frame 6; and a covering material 50 positioned on an outdoor side of the sealing material 42 and covering the sealing material 42.SELECTED DRAWING: Figure 8

Description

[Technical Field]

[0001] The present invention relates to a connection structure between a vertical rib and a horizontal frame in which the end of the vertical rib is attached to the horizontal frame, and a curtain wall unit equipped with the connection structure between the vertical rib and the horizontal frame. [Background technology]

[0002] In a curtain wall unit equipped with a connection structure between vertical ribs and horizontal frames, the vertical ribs extend vertically between the left and right vertical frames and span the upper and lower horizontal frames, which are the upper and lower frames. The ends of the vertical ribs are positioned opposite the horizontal frames and attached to the horizontal frames. In such curtain wall units, it is necessary to ensure waterproofing at the points where the ends of the vertical ribs connect to the horizontal frames in the parts of the building facing the exterior, to deal with water such as rainwater. Therefore, a conventional frame material connection structure in which a sheet-like sealing material is interposed between the ends of the vertical ribs and the horizontal frames (upper and lower frames) is known (see Patent Document 1).

[0003] In the conventional frame material joining structure described in Patent Document 1, a sealant is sandwiched between the end of the vertical rib and the horizontal frame, and the end of the vertical rib is joined to the horizontal frame with a screw. Furthermore, by tightening the screw, the sealant is pressed between the end of the vertical rib and the horizontal frame, ensuring waterproof performance by the sealant. However, the sealant tends to deteriorate due to sunlight (especially ultraviolet rays). Therefore, there is room for improvement in terms of further stabilizing waterproof performance at the point where the end of the vertical rib connects to the horizontal frame. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 11-303253 Summary of the Invention [Problem to be solved by the invention]

[0005] The present invention has been developed in consideration of the above-mentioned conventional problems, and its purpose is to suppress deterioration of the sealing material at the points where the ends of the vertical center ribs connect to the horizontal frames, thereby ensuring stable water-stopping performance. [Means for solving the problem]

[0006] The present invention is a connection structure between a vertical rib and a horizontal frame, which includes a vertical rib and a horizontal frame to which an end of the vertical rib is attached with a gap formed between the vertical rib and the small end of the vertical rib, An end material attached to the end of the vertical rib facing the outdoors to form a gap between the horizontal frame and the end material; a sealing material that fills the gap between the end material and the horizontal frame; a covering material positioned on the outdoor side of the sealing material and covering the sealing material; It is a structure that connects the vertical center rib and horizontal frame. The present invention also relates to a curtain wall unit having the connection structure of the vertical ribs and horizontal frames of the present invention. [Effects of the Invention]

[0007] According to the present invention, deterioration of the sealing material can be suppressed at the points where the ends of the vertical ribs connect to the horizontal frames, thereby enabling stable waterproofing performance to be achieved. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is a front view showing the curtain wall of this embodiment. [Figure 2] FIG. 2 is a cross-sectional view showing the curtain wall of the present embodiment. [Figure 3] FIG. 2 is a cross-sectional view showing a curtain wall including a portion of the curtain wall unit of this embodiment. [Figure 4] FIG. 2 is a front view showing the curtain wall unit of the present embodiment. [Figure 5] FIG. 2 is a vertical cross-sectional view showing the curtain wall unit of the present embodiment. [Figure 6] FIG. 2 is a cross-sectional view showing the curtain wall unit of the present embodiment. [Figure 7] FIG. 2 is a cross-sectional view showing a portion including a vertical rib of the curtain wall unit of this embodiment. [Figure 8] 8 is a vertical cross-sectional view showing the vertical ribs and lower frame of the curtain wall unit of this embodiment taken along line X5-X5 in FIG. 7. FIG. [Figure 9] FIG. 9 is a vertical cross-sectional view showing the vertical ribs and lower frame of the curtain wall unit of this embodiment, with an enlarged view of the area indicated by the arrow X6 in FIG. 8. DETAILED DESCRIPTION OF THE INVENTION

[0009] An embodiment of the connection structure between the vertical ribs and horizontal frames and the curtain wall unit of the present invention will be described with reference to the drawings. The connection structure between the vertical ribs and the horizontal frames of this embodiment is a structure at the connection portion between the vertical ribs and the horizontal frames, and is provided in a structure having a vertical rib and a horizontal frame that are connected to each other. Below, the connection structure between the vertical ribs and the horizontal frames of this embodiment and the curtain wall unit will be described using an example in which the structure is a curtain wall unit. The curtain wall unit is used in the curtain wall of a building and is provided on the exterior wall of the building. Multiple curtain wall units are combined with each other to form part of the curtain wall. The curtain wall unit and the curtain wall are installed on the exterior wall of the building, between the indoor (indoor) and outdoor (outdoor) areas of the building, to form the exterior wall of the building.

[0010] Fig. 1 is a front view showing the curtain wall 1 of this embodiment, showing a part of the curtain wall 1 installed in a building 10 as seen from the outside. Fig. 2 is a cross-sectional view showing the curtain wall 1 of this embodiment, showing a part of the curtain wall 1 and the building 10 cut along line X1-X1 in Fig. 1. As shown in the figure, the curtain wall 1 includes a plurality of curtain wall units 2, 3A to 3C, including the curtain wall unit 2 of this embodiment. The curtain wall units 2, 3A to 3C are panel units that make up the curtain wall 1, and are pre-assembled before installation in the building 10.

[0011] The curtain wall 1 and curtain wall units 2, 3A to 3C are arranged on the exterior side of the skeleton of the building 10 and attached to the skeleton of the building 10. The curtain wall 1 and curtain wall units 2, 3A to 3C are also installed in locations on the exterior wall 11 of the building 10 and form the exterior wall 11 of the building 10. The curtain wall units 2, 3A to 3C are installed side by side on the building 10 and are connected to each other with adjacent curtain wall units 2, 3A to 3C.

[0012] Fig. 3 is a cross-sectional view showing a curtain wall 1 including a portion of the curtain wall unit 2 of this embodiment, and shows an enlarged portion of Fig. 2. Fig. 3 also shows a portion of another curtain wall unit 3B adjacent to the curtain wall unit 2 of this embodiment. As shown in the figure, curtain wall units 2 and 3B are connected to each other and arranged perpendicular to each other at corners 12 of the exterior wall 11 of the building 10. Furthermore, the curtain wall unit 2 of this embodiment has a partition section 2A and an overhang section 2B adjacent to each other on the left and right, and is composed of two left and right sections (partition section 2A, overhang section 2B).

[0013] The partition portion 2A of the curtain wall unit 2, together with another adjacent curtain wall unit 3B, is located between the indoor (indoor space) and outdoor (outdoor space) of the building 10, separating the indoor and outdoor spaces of the building 10. The protruding portion 2B of the curtain wall unit 2 protrudes toward the outdoors from the exterior wall 11 of the building 10, the corners 12 of the exterior wall 11, and the curtain wall unit 3B, and is located outdoors of the building 10, facing the outdoors. The curtain wall unit 3B is arranged along a plane that intersects with the curtain wall unit 2, and is connected to the part between the partition portion 2A and the protruding portion 2B, which is the middle part of the curtain wall unit 2 in the left-right direction.

[0014] Fig. 4 is a front view showing the curtain wall unit 2 of this embodiment, showing a schematic configuration of the curtain wall unit 2 as viewed from the direction of arrow X2 in Fig. 3. Fig. 5 is a longitudinal cross-sectional view showing the curtain wall unit 2 of this embodiment, showing the curtain wall unit 2 cut along line X3-X3 in Fig. 4. Fig. 6 is a transverse cross-sectional view showing the curtain wall unit 2 of this embodiment, showing the curtain wall unit 2 cut along line X4-X4 in Fig. 4. In Fig. 6, another curtain wall unit 3B is shown by a two-dot chain line.

[0015] As shown in the figure, the curtain wall unit 2 is arranged along a plane including a vertical direction R and a horizontal direction S. When the curtain wall unit 2 installed in the building 10 is viewed from the front, the direction that is up and down is the vertical direction R, and the direction that is left and right is the horizontal direction S. In FIG. 4, the vertical direction R is the vertical direction, and the horizontal direction S is the horizontal direction. Furthermore, the thickness direction T of the curtain wall unit 2 is the front-to-back direction (depth direction) when the curtain wall unit 2 installed in the building 10 is viewed from the front, and in FIG. 6, it is the horizontal direction perpendicular to the horizontal direction S. In this way, the directions related to the curtain wall unit 2 are specified as the directions when the curtain wall unit 2 is installed in the building 10. Similarly, the indoor, outdoor, indoor side, and outdoor side of the curtain wall unit 2 refer to the indoor, outdoor, indoor side, and outdoor side when the curtain wall unit 2 is installed in the building 10.

[0016] The curtain wall unit 2 comprises two upper and lower panels 2C and a frame 4 that surrounds the panels 2C. The panels 2C are rectangular glass panels (for example, double-glazed glass, laminated glass, or plate glass) that are placed in rectangular openings 4A in the frame 4 and are held by the frame 4. The panels 2C are also fixed panels that are fixed to the openings 4A in the frame 4 and close the openings 4A in the frame 4. The frame 4 is a rectangular opening frame that forms the openings 4A and is attached to the skeleton of the building 10.

[0017] The frame body 4 has frames 5 to 7 (upper frame 5, lower frame 6, and a pair of vertical frames 7) that are combined with each other, vertical ribs 8, and crossbeams 9, and the four frames 5 to 7, vertical ribs 8, and crossbeams 9 form an opening 4A. The frames 5 to 7, vertical ribs 8, and crossbeams 9 of the frame body 4 are frame materials (frame components) that make up the frame body 4, and each is made of a metal (for example, aluminum alloy) shaped member formed by extrusion molding.

[0018] The upper frame 5 and lower frame 6 are upper and lower horizontal frames (upper horizontal frame, lower horizontal frame) located at the top and bottom of the frame body 4, and extend horizontally (left-right direction S). The pair of vertical frames 7 are side frames located on the left and right sides of the frame body 4, and extend vertically (up-down direction R). The vertical center frame 8 is a middle vertical frame located midway in the left-right direction S of the frame body 4, and extends vertically. The rafter 9 is a horizontal frame (middle horizontal frame) located midway in the up-down direction R of the frame body 4, and extends horizontally. The ends of the upper frame 5, lower frame 6, and the left and right vertical frames 7 are connected to form the frames 5 to 7.

[0019] The vertical ribs 8 are located between a pair of vertical frames 7 and are connected to the upper frame 5 and the lower frame 6. The vertical ribs 8 are installed between the upper frame 5 and the lower frame 6, dividing the inside of the frame body 4 (opening 4A) into left and right. The crossbeams 9 are located between the upper frame 5 and the lower frame 6, and are also located between each of the pair of vertical frames 7 and the vertical ribs 8, connecting them to the vertical frames 7 and the vertical ribs 8. The crossbeams 9 are installed between the vertical frames 7 and the vertical ribs 8, dividing the inside of the frame body 4 (opening 4A) into upper and lower sections. The panel 2C is fitted into the frame body 4 and is held by the frames 5 to 7 of the frame body 4 and the crossbeams 9, and is fixed to the frame body 4.

[0020] Another curtain wall unit 3B adjacent to the curtain wall unit 2 is connected to the vertical ribs 8 of the frame 4. The partition portion 2A of the curtain wall unit 2 is located on one side of the vertical rib 8 in the left-right direction S, and the protruding portion 2B of the curtain wall unit 2 is located on the other side of the vertical rib 8 in the left-right direction S. The vertical rib 8 is located between the partition portion 2A and the protruding portion 2B of the curtain wall unit 2 in the left-right direction S, and is arranged between the other curtain wall unit 3B and the panel 2C in the thickness direction T of the curtain wall unit 2. The panel 2C is located on the outdoor side of the vertical rib 8 in the thickness direction T of the curtain wall unit 2, and is located on both the partition portion 2A side and the protruding portion 2B side of the vertical rib 8 in the left-right direction S.

[0021] In the thickness direction T of the curtain wall unit 2, the panel 2C located in the partition 2A is located between the indoor and outdoor sides of the building 10. The panel 2C located in the overhang 2B is located between the outdoor spaces on both sides of the thickness direction T of the curtain wall unit 2, and is located outdoors of the building 10, facing the outdoor space of the building 10. The vertical ribs 8 face the indoor side of the panel 2C on the partition 2A side, and face the outdoor space of the building 10 located on the vertical rib 8 side of the panel 2C on the overhang 2B side. In this way, the vertical ribs 8 do not face the outdoor space of the building 10 on one side in the left-right direction S (the partition 2A side), but face the outdoor space of the building 10 on the other side in the left-right direction S (the overhang 2B side).

[0022] The upper frame 5 and lower frame 6, which are horizontal frames, each have recessed portions 5A and 6A to which the ends 8A and 8B of the vertical rib 8 are attached (see Figure 5). The ends 8A and 8B are the longitudinal ends of the vertical rib 8 and are located at the upper and lower ends of the vertical rib 8. Of the upper and lower ends 8A and 8B of the vertical rib 8, the upper end 8A (upper end) is attached to the recessed portion 5A of the upper frame 5, and the lower end 8B (lower end) is attached to the recessed portion 6A of the lower frame 6. The recessed portion 5A of the upper frame 5 is an inner peripheral recessed portion located on the inner periphery side (opening 4A side) of the frame body 4 of the upper frame 5, and is arranged along the recessed direction of the upper frame 5 (thickness direction T of the curtain wall unit 2). The recessed portion 6A of the lower frame 6 is an inner peripheral recessed portion located on the inner periphery side (opening 4A side) of the frame body 4 of the lower frame 6, and is arranged along the recessed direction of the lower frame 6 (thickness direction T of the curtain wall unit 2).

[0023] The recessed portion 5A of the upper frame 5 is the underside of the upper frame 5, is arranged facing downward, and is located above the end 8A of the vertical central rib 8. The end 8A (upper end) of the vertical central rib 8 is located below the recessed portion 5A of the upper frame 5 and is arranged opposite the recessed portion 5A of the upper frame 5 in the vertical direction R. The end 8A of the vertical central rib 8 is attached to the recessed portion 5A of the upper frame 5 and connected to the upper frame 5. The recessed portion 6A of the lower frame 6 is the upper surface of the lower frame 6, is arranged facing upward, and is located below the end 8B of the vertical central rib 8. The end 8B (lower end) of the vertical central rib 8 is located above the recessed portion 6A of the lower frame 6 and is arranged opposite the recessed portion 6A of the lower frame 6 in the vertical direction R. The end 8B of the vertical central rib 8 is attached to the recessed portion 6A of the lower frame 6 and connected to the lower frame 6.

[0024] The curtain wall unit 2 has a connection structure between the vertical ribs 8 and the horizontal frames (upper frame 5, lower frame 6). The connection structure between the vertical ribs 8 and the horizontal frames is a structure where the ends 8A and 8B of the vertical ribs 8 each connect to the horizontal frames, and is provided at the connection between the vertical ribs 8 and the horizontal frames. Here, the connection structures where the ends 8A and 8B of the vertical ribs 8 each connect to the horizontal frames (upper frame 5, lower frame 6) are similar to each other. In addition, the water-stopping structures where the ends 8A and 8B of the vertical ribs 8 each connect to the horizontal frames are similar to each other. Therefore, below, we will explain the connection structure and water-stopping structure where the end 8B of the vertical ribs 8 connects to the lower frame 6, and will omit explanation of the connection structure and water-stopping structure where the end 8A of the vertical ribs 8 connects to the upper frame 5.

[0025] Fig. 7 is a cross-sectional view showing a portion including the vertical ribs 8 of the curtain wall unit 2 of this embodiment, and is an enlarged view of a portion of Fig. 6. Fig. 8 is a longitudinal cross-sectional view showing the vertical ribs 8 and sill 6 of the curtain wall unit 2 of this embodiment, taken along line X5-X5 in Fig. 7, and showing the end 8B of the vertical ribs 8 and the recessed portion 6A of the sill 6. Fig. 9 is a longitudinal cross-sectional view showing the vertical ribs 8 and sill 6 of the curtain wall unit 2 of this embodiment, with an enlarged view of the area indicated by arrow X6 in Fig. 8. As shown in the figure, with regard to the orientation of the curtain wall unit 2, the direction indicated by arrow F is the facing direction F of the vertical ribs 8, and the direction indicated by arrow G is the facing direction G of the vertical ribs 8. The facing direction F of the vertical ribs 8 is the left-right direction S, and the facing direction G of the vertical ribs 8 is the thickness direction T of the curtain wall unit 2. The longitudinal direction of the vertical ribs 8 is the up-down direction R.

[0026] The vertical ribs 8 are hollow and attached to the lower frame 6 by brackets 20. The brackets 20 are located inside the vertical ribs 8 and are fixed to the vertical ribs 8 and the recessed portions 6A of the lower frame 6, attaching the ends 8B of the vertical ribs 8 to the recessed portions 6A of the lower frame 6. The vertical ribs 8 also have a facing portion 8C facing the panel 2C, left and right side portions 8D, 8E (first side portion 8D, second side portion 8E), multiple screw holes 8F, and a small end 8G facing the lower frame 6. The facing portion 8C is positioned opposite the panel 2C in the recessed direction G of the vertical ribs 8, facing the panel 2C with a gap between them. A gasket 8H is attached to the facing portion 8C. The gasket 8H is sandwiched between the facing portion 8C and the panel 2C and is in contact with the panel 2C.

[0027] The side portions 8D, 8E are left and right front portions (side surfaces) of the vertical rib 8, and are connected to the opposing portion 8C and arranged along the front direction G of the vertical rib 8. The side portions 8D, 8E face each other while being spaced apart in the front direction F of the vertical rib 8, and are arranged facing the sides in the front direction F of the vertical rib 8. One of the left and right side portions 8D, 8E, a first side portion 8D, is located on the partition portion 2A side of the vertical rib 8 and faces the interior of the building 10. The other of the left and right side portions 8D, 8E, a second side portion 8E, is located on the protruding portion 2B side of the vertical rib 8 and faces the exterior of the building 10.

[0028] The screw hole portion 8F is located inside the vertical center bone 8, connects to the second side portion 8E of the vertical center bone 8, and extends in the longitudinal direction of the vertical center bone 8 between the end portions 8A, 8B on both sides of the vertical center bone 8. Multiple screw hole portions 8F each protrude from the second side portion 8E toward the interior of the vertical center bone 8 and are formed at intervals in the projection direction G of the vertical center bone 8. The small end 8G of the vertical center bone 8 is the end face in the longitudinal direction of the vertical center bone 8, is located at the end portion 8B of the vertical center bone 8, and is arranged opposite the lower frame 6 (here, the projection portion 6A) in the longitudinal direction of the vertical center bone 8. The end portion 8B of the vertical center bone 8 is attached to the lower frame 6 by the bracket 20, with a gap formed between the small end 8G of the end portion 8B of the vertical center bone 8 and the lower frame 6.

[0029] The curtain wall unit 2 includes end members 30 arranged on the ends 8G of the vertical ribs 8, as well as a seal 40, a backup member 41, a sealing member 42, and a covering member 50, all of which are received by the end members 30. The end members 30 are attached to the ends 8G of the vertical ribs 8 at the locations facing the exterior of the building 10, forming a gap between the end members 30 and the sill 6 (the recessed portion 6A). The portions of the vertical ribs 8 facing the exterior of the building 10 are the portions of the vertical ribs 8 exposed to the exterior, which in this case are the second side portions 8E. The second side portions 8E are located between the interior of the vertical ribs 8 (the interior space) and the exterior of the building 10 (the outdoor space), and are arranged facing the exterior. The end members 30 are attached to the ends 8G of the second side portions 8E at the ends 8B of the vertical ribs 8, and are arranged facing the sill 6 in the longitudinal direction of the vertical ribs 8.

[0030] The end member 30 is an attachment (end attachment) provided on the end 8G of the second side portion 8E and is arranged along the end 8G of the second side portion 8E. The end member 30 is attached to the end 8B of the vertical rib 8 with a plurality of screws 43 and held in place at the end 8G. The screws 43 are inserted into screw holes formed in the screw hole portion 8F and attached to the screw hole portion 8F, attaching the end member 30 to the screw hole portion 8F and the end 8B of the vertical rib 8. The end member 30 is attached to the end 8G of the second side portion 8E of the vertical rib 8 facing the outdoors, forming a gap between it and the lower frame 6, and is arranged in the gap between the end 8G and the lower frame 6. In the longitudinal direction of the vertical rib 8, the end member 30 is arranged between the end 8G and the lower frame 6 while being spaced from the lower frame 6, forming a gap between the end member 30 and the lower frame 6.

[0031] The end member 30 has an accommodation groove 31 that accommodates the adhesive seal 40, a fixing portion 32 that is fixed to the vertical rib 8, a receiving portion 33 that receives the backup material 41, a contact portion 34 to which the sealing material 42 is in contact, and a retaining portion 35 that holds the covering material 50 (see FIG. 9). The contact portion 34 and the retaining portion 35 are located between the end 8G of the second side portion 8E and the lower frame 6 in the longitudinal direction of the vertical rib 8, and are disposed in the gap between the end 8G and the lower frame 6. The accommodation groove 31, the fixing portion 32, and the receiving portion 33 are located inside the hollow vertical rib 8 relative to the contact portion 34 and the retaining portion 35, and are disposed between the internal space of the vertical rib 8 and the lower frame 6 in the longitudinal direction of the vertical rib 8.

[0032] The accommodation groove 31 of the end member 30 is a recess extending along the fore edge 8G of the second side portion 8E of the vertical rib 8, and is positioned toward the bottom frame 6. The accommodation groove 31 is positioned away from the fore edge 8G of the second side portion 8E toward the interior side of the vertical rib 8, and is open toward the bottom frame 6. The accommodation groove 31 is located on the indoor side of the adhesive portion 34 and the holding portion 35, and is adjacent to the adhesive portion 34 and the holding portion 35.

[0033] The adhesive seal 40 is a sealant (adhesive sealant) filled into the receiving groove 31, and is provided inside the receiving groove 31 to fill the receiving groove 31. The adhesive seal 40 is an auxiliary seal that assists the sealing by the sealant 42, and is also a leading seal that is filled into the receiving groove 31 prior to the filling of the sealant 42. The adhesive seal 40 is received in the receiving groove 31 and adheres to the inner surface of the receiving groove 31. In the longitudinal direction of the vertical rib 8, the adhesive seal 40 is disposed facing the lower frame 6, with a gap formed between it and the lower frame 6, and is disposed opposite the lower frame 6. The sealant 42 adheres to the adhesive seal 40 and the lower frame 6 between the receiving groove 31 (adhesive seal 40) and the lower frame 6.

[0034] The fixing portion 32 of the end member 30 is the bottom (groove bottom) of the accommodation groove 31. Located at the groove bottom of the accommodation groove 31, it is fixed to the screw hole portion 8F and the end 8B of the vertical rib 8 with a fastener, a screw 43. The screw 43 is inserted through a through-hole formed in the fixing portion 32 from the lower frame 6 side and attached to the screw hole portion 8F. By fixing the fixing portion 32 to the end 8B of the vertical rib 8, the accommodation groove 31 and the end member 30 are attached to the end 8B of the vertical rib 8, and the end member 30 is attached to the end 8G of the second side portion 8E and held in place. The head of the screw 43 is positioned inside the accommodation groove 31 and covered by the tight-fitting seal 40.

[0035] The receiving portion 33 of the end member 30 is a protrusion that protrudes from the wall portion (groove wall portion) of the accommodation groove portion 31 toward the lower frame 6 and is disposed opposite the lower frame 6 in the longitudinal direction of the vertical rib 8. The receiving portion 33 receives the backup material 41, positioning the backup material 41 between the end member 30 and the lower frame 6. The backup material 41 is located on the inner side of the vertical rib 8 with respect to the sealing material 42, and is located between the end member 30 and the lower frame 6 to receive the sealing material 42. Here, the backup material 41 is located between the adhesive seal 40 and the lower frame 6 in the longitudinal direction of the vertical rib 8 and is held between the adhesive seal 40 and the lower frame 6 by the receiving portion 33. The backup material 41 fills the gap between the adhesive seal 40 and the lower frame 6.

[0036] The contact portion 34, the retaining portion 35, and the end member 30 are located on the fore-edge 8G side of the second side portion 8E relative to the gap between the end member 30 and the lower frame 6 and the sealing material 42. The contact portion 34 is a flat portion facing the lower frame 6 and is arranged along the viewing direction F of the vertical rib 8. The contact portion 34 is also a receiving surface that receives the sealing material 42 and is located on the exterior side of the end member 30. The contact portion 34 is located on the exterior side of the receiving groove 31 and the sealing seal 40, forming a gap between the lower frame 6 and the sealing portion 34 that is filled with the sealing material 42. The receiving groove 31 and the sealing seal 40 are located on the interior side of the vertical rib 8 relative to the contact portion 34, and the sealing seal 40 is provided contiguous to the contact portion 34. The contact portion 34 and the sealing seal 40 are adjacent to each other in the viewing direction F of the vertical rib 8 and are arranged spaced apart from the lower frame 6 toward the end 8B of the vertical rib 8.

[0037] The sealant 42 is filled in the gap between the end member 30 and the lower frame 6, and adheres tightly to the end member 30 and the lower frame 6. As a result, the sealant 42 is provided in the gap between the end member 30 and the lower frame 6, and fills the gap between the end member 30 and the lower frame 6. The gap between the end member 30 and the lower frame 6 is closed and sealed by the sealant 42. The sealant 42 is also received by the backup member 41, and fills the gap between the end member 30 and the lower frame 6 on the outdoor side of the backup member 41. The sealant 42 adheres tightly to the contact portion 34 and the lower frame 6 between the contact portion 34 and the lower frame 6.

[0038] Here, the sealant 42 is filled from the outdoor side into the gap between the adhesive seal 40 and the lower frame 6 and the gap between the contact portion 34 and the lower frame 6. Supported by the backup material 41, the sealant 42 is provided from the portion of the adhesive seal 40 on the lower frame 6 side to the portion of the contact portion 34 on the lower frame 6 side, and is in close contact with the adhesive seal 40, the contact portion 34, and the lower frame 6. The sealant 42 is provided in the gap between the adhesive seal 40 and the lower frame 6 and the gap between the contact portion 34 and the lower frame 6, filling the gap between the adhesive seal 40 and the lower frame 6 and the gap between the contact portion 34 and the lower frame 6. The sealant 42 is provided from the portion between the contact portion 34 and the lower frame 6 to a portion closer to the interior of the vertical rib 8 than the contact portion 34, and seals the gap between the contact portion 34 and the lower frame 6 and the gap between the adhesive seal 40 and the lower frame 6.

[0039] The retaining portion 35 of the edge member 30 is a groove (retaining groove) that extends along the edge 8G of the second side portion 8E, and is provided in a portion of the edge member 30 that faces the exterior of the building 10. The retaining portion 35 is located on the edge 8G side of the second side portion 8E with respect to the gap between the edge member 30 and the sill 6, and is disposed between the sealant 42 and the edge 8G. The covering material 50 is a rubber airtight material (e.g., a gasket), and while held by the retaining portion 35, it is located on the exterior side of the sealant 42 and covers the sealant 42. The covering material 50 is disposed from the second side portion 8E to the sill 6, and is in contact with the second side portion 8E and the sill 6.

[0040] The outdoor side is the outdoor side of the second side 8E of the vertical rib 8, and the outer side of the vertical rib 8 relative to the sealing material 42. The indoor side is the indoor side of the second side 8E, and the inner side of the vertical rib 8 relative to the sealing material 42. The covering material 50 is located on the outdoor side of the end material 30 and the sealing material 42, faces the exterior of the building 10, and covers the end material 30 and the sealing material 42 from the outdoor side. The covering material 50, which is a light-blocking material, blocks sunlight from reaching the sealing material 42. The covering material 50 also blocks water, such as rainwater, from reaching the sealing material 42.

[0041] The covering material 50 has an attachment portion 51 that is attached to the end material 30, and two covering portions 52, 53 (first covering portion 52 and second covering portion 53) that protrude from the attachment portion 51. The attachment portion 51 is the base of the covering material 50, and is inserted into the holding portion 35 of the end material 30 and fitted into the holding portion 35. As a result, the attachment portion 51 is attached to the holding portion 35 of the end material 30 and is held by the holding portion 35.

[0042] The first covering portion 52 is a fin portion (first fin portion) that protrudes from the mounting portion 51 toward the lower frame 6. It is located on the lower frame 6 side of the mounting portion 51 and on the outdoor side of the gap between the end material 30 (contact portion 34) and the lower frame 6 and the sealing material 42. The first covering portion 52 contacts the lower frame 6 to cover and shield the sealing material 42 on the outdoor side. The second covering portion 53 is a fin portion (second fin portion) that protrudes from the mounting portion 51 toward the second side 8E of the vertical rib 8. It is located on the second side 8E side of the mounting portion 51 and on the outdoor side of the end 8G of the second side 8E and the area between the end material 30 and the end 8G. The second covering portion 53 contacts the second side 8E to cover and shield the area between the end material 30 and the end 8G on the outdoor side.

[0043] In the connection structure between the vertical ribs 8 and the horizontal frames and the curtain wall unit 2 described above, the covering material 50 can block sunlight and water from reaching the sealant 42 at the second side portion 8E of the vertical ribs 8, which is the portion facing the outdoors. This makes it possible to suppress deterioration of the sealant 42 due to sunlight (especially ultraviolet rays) and water. Therefore, deterioration of the sealant 42 can be suppressed at the portion where the end portion 8B of the vertical ribs 8 connects to the sill 6, and the water-stopping performance of the sealant 42 can be stably exhibited. The covering material 50 having the attachment portion 51, the first covering portion 52, and the second covering portion 53 can be easily attached to the connection structure between the vertical ribs 8 and the horizontal frames and the curtain wall unit 2, and the covering material 50 can stably block sunlight and water from reaching the sealant 42.

[0044] The end member 30 has a receiving groove 31, which makes it easy to provide a tight seal 40 where the end 8B of the vertical rib 8 connects to the sill 6. Furthermore, by adhering the sealant 42 to the adhesive portion 34 of the end member 30 and the adhesive seal 40, the waterproofing performance of the sealant 42 can be reliably ensured. The receiving portion 33 of the end member 30 also makes it easy to position the backup member 41 in a position to receive the sealant 42. By fixing the fixing portion 32 of the end member 30 to the vertical rib 8, the end member 30 can be stably attached to the end 8G of the second side portion 8E, making it easy to position the end member 30 between the end 8G and the sill 6.

[0045] In this embodiment, the portion of the vertical rib 8 facing the outdoors is the second side portion 8E. However, the portion of the vertical rib 8 facing the outdoors is not limited to the second side portion 8E and may be another portion of the vertical rib 8. Therefore, the end 8G to which the end member 30 is attached is not limited to the end 8G of the second side portion 8E, but may be another end 8G of the vertical rib 8. The present invention can be applied to various portions of the vertical rib 8 facing the outdoors. The horizontal frames to which the ends of the vertical rib 8 are connected are not limited to the upper frame 5 and the lower frame 6, but may be other horizontal frames (e.g., lattice 9). Furthermore, the present invention is not limited to the curtain wall unit 2 having fixed panels 2C, but can also be applied to various curtain wall units (e.g., curtain wall units having openable or movable panels). The connection structure between the vertical rib and the horizontal frame of the present invention is not limited to curtain wall units, but can also be applied to the connection structure between the vertical rib and the horizontal frame of various structures having vertical ribs and horizontal frames connected to each other.

[0046] As described above, this embodiment discloses the connection structure between the vertical ribs and the horizontal frames described in the following (1) to (5), and the curtain wall unit described in (6).

[0047] (1) A connection structure between a vertical rib and a horizontal frame, the connection structure comprising a vertical rib and a horizontal frame to which an end of the vertical rib is attached with a gap formed between the vertical rib and the end of the vertical rib, An end material attached to the end of the vertical rib facing the outdoors to form a gap between the horizontal frame and the end material; a sealing material that fills the gap between the end material and the horizontal frame; a covering material positioned on the outdoor side of the sealing material and covering the sealing material; A connection structure between the vertical center rib and the horizontal frame. In the connection structure between the vertical ribs and the horizontal frame described in (1), deterioration of the sealing material can be suppressed at the point where the end of the vertical rib connects to the horizontal frame, and water-stopping performance can be stably demonstrated.

[0048] (2) In the connection structure between the vertical center rib and the horizontal frame described in (1), The edge member has a holding portion that holds the covering member, The covering material is a connection structure between the vertical ribs and the horizontal frames, and has an attachment portion that is attached to and held by the holding portion, a first covering portion that contacts the horizontal frame and covers the sealing material on the outdoor side, and a second covering portion that contacts the vertical ribs and covers the area between the end material and the end on the outdoor side. In the connection structure between the vertical ribs and the horizontal frame described in (2), a covering material can be easily attached to the connection structure between the vertical ribs and the horizontal frame, and the covering material can stably block sunlight and water from reaching the sealing material.

[0049] (3) In the connection structure of the vertical ribs and horizontal frames described in (1) or (2), The end material has a contact portion that forms a gap between the end material and the horizontal frame that is filled with the sealing material, allowing the sealing material to adhere to the end material, and a storage groove portion that is located inside the vertical middle frame relative to the contact portion and accommodates a sealing seal that the sealing material adheres to.This is a connection structure between the vertical middle frame and the horizontal frame. The connection structure between the vertical ribs and the horizontal frame described in (3) allows for easy application of a seal where the end of the vertical rib connects to the horizontal frame. Furthermore, the sealant can be applied to the end of the edge material and the seal, ensuring watertightness.

[0050] (4) In the connection structure between the vertical rib and the horizontal frame described in any of (1) to (3), a backup material positioned between the end member and the horizontal frame to receive the sealing material; The end member has a receiving portion that receives the backup material and positions the backup material between the end member and the horizontal frame, forming a connection structure between the vertical rib and the horizontal frame. In the connection structure between the vertical ribs and the horizontal frame described in (4), the support part of the end material makes it easy to place the backup material in the position to receive the sealing material.

[0051] (5) In the connection structure of the vertical rib and the horizontal frame described in any of (1) to (4), The end piece has a connecting structure between the vertical rib and the horizontal frame, and has a fixing portion that is fixed to the vertical rib. In the connection structure between the vertical center rib and the horizontal frame described in (5), the fixing part of the end material is fixed to the vertical center rib, so that the end material can be stably attached to the end, and the end material can be easily positioned between the end and the horizontal frame.

[0052] (6) A curtain wall unit having a connection structure between vertical ribs and horizontal frames described in any of (1) to (5). In the curtain wall unit described in (6), deterioration of the sealant can be suppressed at the point where the end of the vertical rib of the curtain wall unit connects to the horizontal frame, thereby enabling stable water-stopping performance. [Explanation of symbols]

[0053] 1···Curtain wall, 2···Curtain wall unit, 2A···Partition section, 2B···Protrusion section, 2C···Panel, 3A to 3C···Curtain wall unit, 4···Frame body, 4A···Opening, 5···Top frame, 5A···Expansion section, 6···Bottom frame, 6A···Expansion section, 7···Vertical frame, 8···Vertical rib, 8A···End, 8B···End, 8C···Facing section, 8D···First side section, 8E···Second side section, 8F···Screw hole section, 8G···Edge, 8H···Gasket, 9·· ·Gable, 10···Building, 11···Exterior wall, 12···Corner, 20···Bracket, 30···Edge material, 31···Accommodation groove portion, 32···Fixing portion, 33···Receiving portion, 34···Adhesion portion, 35···Retaining portion, 40···Adhesion seal, 41···Backup material, 42···Sealing material, 43···Screw, 50···Covering material, 51···Mounting portion, 52···First covering portion, 53···Second covering portion, F···Face direction, G···Face direction, R···Up and down direction, S···Left and right direction, T···Thickness direction.

Claims

1. A connection structure between a vertical rib and a horizontal frame, the connection structure comprising a vertical rib and a horizontal frame to which an end of the vertical rib is attached with a gap formed between the vertical rib and the small end of the vertical rib, An end material attached to the end of the vertical rib facing the outdoors to form a gap between the horizontal frame and the end material; a sealing material that fills the gap between the end material and the horizontal frame; a covering material positioned on the outdoor side of the sealing material and covering the sealing material; A connection structure between the vertical center rib and the horizontal frame.

2. In the connection structure of the vertical ribs and the horizontal frames according to claim 1, The edge member has a holding portion that holds the covering member, The covering material has a connection structure between the vertical ribs and the horizontal frames, and includes an attachment portion that is attached to and held by the holding portion, a first covering portion that contacts the horizontal frame and covers the sealing material on the outdoor side, and a second covering portion that contacts the vertical ribs and covers the area between the end material and the end on the outdoor side.

3. In the connection structure between the vertical ribs and the horizontal frames according to claim 1 or 2, The end material has a contact portion that forms a gap between the end material and the horizontal frame that is filled with the sealing material, allowing the sealing material to adhere to the end material, and a storage groove portion that is located inside the vertical middle frame relative to the contact portion and accommodates a sealing seal that the sealing material adheres to.This is a connection structure between the vertical middle frame and the horizontal frame.

4. In the connection structure between the vertical ribs and the horizontal frames according to claim 1 or 2, a backup material positioned between the end member and the horizontal frame to receive the sealing material; The end member has a receiving portion that receives the backup material and positions the backup material between the end member and the horizontal frame, forming a connection structure between the vertical center rib and the horizontal frame.

5. In the connection structure between the vertical ribs and the horizontal frames according to claim 1 or 2, The end piece has a connecting structure between the vertical rib and the horizontal frame, and has a fixing portion that is fixed to the vertical rib.

6. A curtain wall unit having the connection structure of vertical ribs and horizontal frames according to claim 1 or 2.

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