Curtain wall unit

Abstract

To provide a curtain wall unit that eases reduction in the temperature of a vertical frame caused by a projection part projecting toward the outdoor side from a panel body of the curtain wall unit and prevents the occurrence of condensation on the indoor side surface of the vertical frame.SOLUTION: A curtain wall unit 2 comprises a panel body 2A disposed at an opening 3A formed by a vertical frame 6. The vertical frame 6 has a projection part 6A projecting toward the outdoor side from the panel body 2A. The curtain wall unit 2 comprises covers 30, 40 for covering an exposed part 6J exposed to the outside of the projection part 6A, and an insulating material 74 interposed between the projection part 6A and the covers 30, 40.SELECTED DRAWING: Figure 3

Description

Technical Field

[0001] The present invention relates to a curtain wall unit provided with a panel body disposed in an opening formed by vertical frames.

Background Art

[0002] An overhanging portion may be provided on the vertical frame of the curtain wall unit. The overhanging portion of the vertical frame projects to a position outside the panel body, for example, to ensure the strength of the vertical frame or as a decorative material. Conventionally, a curtain wall is known in which a seal receiving member is connected to the outside of a vertical frame called a mullion, and a guide rail for guiding a guide wheel of a gondola is integrally formed on the outer surface of the seal receiving member (see Patent Document 1).

[0003] In the conventional curtain wall described in Patent Document 1, the guide rail projects to a position outside the glass plate which is the panel body. However, in such a vertical frame having an overhanging portion, the portion in contact with the outside air increases, and in winter, it is cooled by the influence of the outside air and the temperature is likely to drop. Further, when the cooled vertical frame comes into contact with the warm air inside the room, the air may be cooled and fall below the dew point temperature, resulting in the possibility of condensation on the surface of the indoor side of the vertical frame. In particular, in cold regions with severe temperature conditions, measures against condensation on the surface of the indoor side of the vertical frame become important.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] The present invention has been made in view of the above-mentioned conventional problems, and its purpose is to mitigate the temperature drop of the vertical frame caused by the overhang portion that extends outward from the panel body of the curtain wall unit, thereby suppressing the occurrence of condensation on the indoor surface of the vertical frame. [Means for solving the problem]

[0006] The present invention is a curtain wall unit comprising a panel body arranged in an opening formed by a vertical frame, The vertical frame has an overhang that extends to a position further outward than the panel body. A cover that covers the exposed portion that is exposed to the outside of the protruding portion, An insulating material interposed between the protruding portion and the cover, Equipped with, The cover has guide rails that guide the gondola. This is a curtain wall unit. [Effects of the Invention]

[0007] According to the present invention, it is possible to mitigate the temperature drop of the vertical frame caused by the overhang portion that extends outward from the panel body of the curtain wall unit, thereby suppressing the occurrence of condensation on the indoor surface of the vertical frame. [Brief explanation of the drawing]

[0008] [Figure 1] This is a front view showing the curtain wall of the first embodiment. [Figure 2] This is a cross-sectional view showing a curtain wall of the first embodiment. [Figure 3] This is a cross-sectional view of the curtain wall of the first embodiment, showing an enlarged portion of Figure 2. [Figure 4] This is a cross-sectional view showing the vertical frame and cover of the curtain wall unit of the first embodiment, disassembled. [Figure 5] This is a cross-sectional view showing a curtain wall unit according to the second embodiment. [Figure 6] This is a cross-sectional view showing the vertical frame and cover of the curtain wall unit of the second embodiment, disassembled. [Figure 7] This is a cross-sectional view showing a curtain wall unit according to the third embodiment. [Figure 8] This is a cross-sectional view showing the vertical frame and cover of the curtain wall unit of the third embodiment, disassembled. [Figure 9] This is a cross-sectional view showing a curtain wall unit according to the fourth embodiment. [Figure 10] This is a cross-sectional view showing the vertical frame and cover of the curtain wall unit of the fourth embodiment, disassembled. [Modes for carrying out the invention]

[0009] One embodiment of the curtain wall unit of the present invention will be described with reference to the drawings. The curtain wall unit of this embodiment is used in the curtain wall of a building and is installed on the exterior wall of the building. Multiple curtain wall units are combined with each other to form a part of the curtain wall. The curtain wall unit and curtain wall are installed on the exterior wall of a building, between the interior (indoors) and exterior (outdoors) of the building, and form the exterior wall of the building.

[0010] (First Embodiment) Figure 1 is a front view showing the curtain wall 1 of the first embodiment, showing the curtain wall 1 and curtain wall unit 2 installed on the exterior wall 11 of the building 10 as seen from the outside. Figure 2 is a cross-sectional view showing the curtain wall 1 of the first embodiment. As shown in the figure, the curtain wall 1 comprises a plurality of curtain wall units 2 installed side by side on the exterior wall 11 of the building 10. The curtain wall units 2 are panel units that make up the curtain wall 1 and are pre-assembled as units before being installed on the exterior wall 11. The curtain wall 1 and the curtain wall units 2 are located on the exterior side of the building frame 10 and attached to the frame to form the wall surface (exterior wall surface) of the exterior wall 11 of the building 10. The plurality of curtain wall units 2 are installed side by side in the vertical and horizontal directions R, and each is combined with the adjacent curtain wall units 2.

[0011] In addition, when the curtain wall 1 and the curtain wall unit 2 installed in the building 10 are viewed from the front (see FIG. 1), the vertical direction is the up-and-down direction, and the left-right direction is the left-right direction R. In FIG. 1, the up-and-down direction is the vertical direction, and the left-right direction R is the horizontal direction. The indoor-outdoor direction S (see FIG. 2) is the indoor-outdoor direction (the indoor-outdoor direction) in the curtain wall 1 and the curtain wall unit 2 installed in the building 10. Further, the indoor-outdoor direction S is the front-back direction when the curtain wall 1 and the curtain wall unit 2 installed in the building 10 are viewed from the front, and in FIG. 1, it is the horizontal direction orthogonal to the left-right direction R. Thus, the directions related to the curtain wall 1 and the curtain wall unit 2 are specified in the state of being installed in the building 10. Also, the indoor side and the outdoor side with respect to the curtain wall 1 and the curtain wall unit 2 are the indoor side and the outdoor side in the state of being installed in the building 10.

[0012] The curtain wall unit 2 includes two panel bodies 2A and a frame body 3 surrounding the panel bodies 2A. The frame bodies 3 of the plurality of curtain wall units 2 are combined with the frame bodies 3 of the adjacent curtain wall units 2 respectively. The frame body 3 is a rectangular opening frame forming an opening 3A, and is attached to the building frame of the building 10. The panel body 2A is a rectangular glass panel body (for example, plate glass, laminated glass, or combined glass), and is disposed in the opening 3A of the frame body 3.

[0013] The frame body 3 has four frames 4 to 6 (upper frame 4, lower frame 5, a pair of vertical frames 6) combined with each other and a joint 7, and the rectangular opening 3A is formed by the frames 4 to 6. The frames 4 to 6 of the frame body 3 are the frame members constituting the frame body 3, and the frames 4 to 6 of the frame body 3 and the joint 7 are made of metal profiles (for example, made of aluminum alloy) formed by extrusion molding.

[0014] The upper frame 4 and the lower frame 5 are the upper and lower horizontal frames of the frame body 3, and extend along the left - right direction R (horizontal direction) at the upper and lower parts of the frame body 3. The pair of vertical frames 6 are side frames located on the left and right side parts of the frame body 3, and extend along the up - down direction (vertical direction) at the side parts of the frame body 3. The ends of the upper frame 4, the lower frame 5, and the pair of vertical frames 6 are connected to each other, and the frames 4 - 6 are framed. The blind 7 extends along the left - right direction R between the upper frame 4 and the lower frame 5 and is connected to the pair of vertical frames 6, partitioning the opening 3A of the frame body 3 vertically. The panel body 2A is fitted into the frame body 3 and held by the frame body 3.

[0015] FIG. 3 is a cross - sectional view of the curtain wall 1 of the first embodiment showing a magnified part of FIG. 2, and shows the part on the vertical frame 6 side of two curtain wall units 2 adjacent to each other in the left - right direction R. Also, in FIG. 3, a part of the gondola 20 is schematically shown by a two - dot chain line. As shown in the figure, a plurality of curtain wall units 2 and the frame body 3 are installed side by side in the left - right direction R on the outer wall 11 of the building 10. In two curtain wall units 2 adjacent to each other in the left - right direction R, the vertical frame 6 of one curtain wall unit 2 and the vertical frame 6 of the other curtain wall unit 2 face each other in the left - right direction R and are arranged adjacent to each other on the left and right.

[0016] The vertical frames 6 of the curtain wall units 2 adjacent to each other in the left - right direction R are arranged at intervals in the left - right direction R. The vertical frame 6 is separated from other vertical frames 6 adjacent to it in the left - right direction R (the vertical frames 6 of other curtain wall units 2 installed side by side in the left - right direction R). In each of the curtain wall units 2, the panel body 2A is arranged in the opening 3A formed by the vertical frame 6 of the frame body 3 and is exposed to the outside. The panel body 2A is located on the opening 3A side of the vertical frame 6 and is held by the vertical frame 6.

[0017] Each vertical frame 6 has an overhanging portion 6A that extends outward, and the curtain wall unit 2 is equipped with two covers 30, 40 (first cover 30, second cover 40) that cover the overhanging portion 6A of the vertical frame 6. The overhanging portion 6A is formed in a hollow shape and is positioned on the outside of the panel body 2A. The overhanging portions 6A of vertical frames 6 of adjacent curtain wall units 2 in the left-right direction R are positioned on the outside of the panel body 2A, spaced apart in the left-right direction R, and are positioned adjacent to each other on the left-right direction R. The overhanging portion 6A of a vertical frame 6 is spaced apart in the left-right direction R from the overhanging portion 6A of other adjacent vertical frames 6, and is positioned opposite to the overhanging portion 6A of other vertical frames 6 in the left-right direction R.

[0018] The overhang portion 6A of a vertical frame 6 forms a gap 8 between it and the overhang portion 6A of another vertical frame 6 adjacent to it in the left-right direction R. The gap 8 is the space between the overhang portions 6A of adjacent vertical frames 6 in the left-right direction R, and extends along the overhang portion 6A of the vertical frame 6 in the longitudinal direction (up and down direction). The gaps 8 between the vertically aligned curtain wall units 2 are aligned vertically, with their positions in the indoor-outdoor direction S and left-right direction R being matched. In each of the vertical frames 6, the overhang portion 6A is provided on the outdoor side, including the outdoor end of the vertical frame 6, and extends along the indoor-outdoor direction S.

[0019] Figure 4 is a cross-sectional view showing the vertical frame 6 and covers 30 and 40 of the curtain wall unit 2 of the first embodiment in disassembled form, and shows the left vertical frame 6 and cover 30 and 40 of the left and right vertical frame 6 and covers 30 and 40 shown in Figure 3. As shown in Figures 3 and 4, the vertical frame 6 comprises a vertical frame body 50 located on the indoor side, an overhanging member 60 located on the outdoor side, and a watertight material 70 and an airtight material 71 attached to the vertical frame body 50. The vertical frame body 50 is connected to the other frames of the frame 3 (upper frame 4, lower frame 5) to form the opening 3A of the frame 3 and holds the panel body 2A. The overhanging member 60 is an attached member attached to the vertical frame body 50 and is located on the outdoor side of the vertical frame body 50. The overhanging member 60 is attached to the vertical frame body 50 and extends outwards from the vertical frame body 50.

[0020] The watertight material 70 and the airtight material 71 are elastically deformable sealing materials that extend in the longitudinal direction (up and down direction) of the vertical frame 6 and the vertical frame body 50. The watertight material 70 is a rain barrier and is an outdoor sealing material (first sealing material) located on the outdoor side of the airtight material 71, and is located on the indoor side of the protruding portion 6A of the vertical frame 6. The airtight material 71 is a wind barrier and is an indoor sealing material (second sealing material) located on the indoor side of the watertight material 70, and is positioned at a distance from the watertight material 70 on the indoor side.

[0021] The watertight material 70 and the airtight material 71 are arranged in parallel, separated in the indoor-outdoor direction S, with a gap between them to form an isobaric space 72. The isobaric space 72 is a space that is at the same pressure as the outside air (outdoor air pressure) and is in communication with the outside. The outside is the space located on the outside of the curtain wall unit 2, and the outside air is the air outside.

[0022] In the vertical frames 6 of adjacent curtain wall units 2 in the left-right direction R, the watertight material 70 of the vertical frame bodies 50 of the left and right vertical frames 6 are positioned opposite each other and in contact with each other. Also, the airtight material 71 of the vertical frame bodies 50 of the left and right vertical frames 6 are positioned opposite each other and in contact with each other. The watertight material 70 and airtight material 71 in contact with each other seal the space between the vertical frame bodies 50 of the left and right vertical frames 6, and an equal-pressure space 72 is formed between the vertical frame bodies 50 of the left and right vertical frames 6. The equal-pressure space 72 is formed by the watertight material 70, the airtight material 71, and the vertical frame bodies 50, and extends in the longitudinal direction of the vertical frames 6 and vertical frame bodies 50.

[0023] In this manner, the vertical frame body 50 of vertical frame 6 is sealed off by a watertight material 70 and an airtight material 71 at the point where it is adjacent to another vertical frame body 50 of vertical frame 6 in the left-right direction R. In this state, the vertical frame body 50 of vertical frame 6 forms an equal pressure space 72 between itself and another vertical frame body 50 of vertical frame 6 adjacent to it in the left-right direction R, and is positioned opposite the other vertical frame body 50 of vertical frame 6 with the equal pressure space 72 in between. The equal pressure space 72 is located on the indoor side of the overhang portion 6A of the vertical frame 6 adjacent to it in the left-right direction R and the gap 8 between the left and right overhang portions 6A. The overhang portion 6A of vertical frame 6 and the gap 8 are located on the outdoor side of the equal pressure space 72.

[0024] The vertical frame body 50 has a holding portion 51 for holding the panel body 2A, an indoor portion 52 located on the indoor side of the holding portion 51, two rows of groove-shaped mounting portions 53 and 54 (first mounting portion 53, second mounting portion 54), and a protruding portion 55 located on the outdoor side of the holding portion 51. The holding portion 51 of the vertical frame body 50 is located between the indoor portion 52 and the protruding portion 55, is formed in a groove shape, and accommodates the vertical edge portion 2B of the panel body 2A. The vertical edge portion 2B of the panel body 2A is located on the left and right sides of the panel body 2A, extends in the vertical direction, and is held by the groove-shaped holding portion 51.

[0025] The indoor portion 52 of the vertical frame body 50 is a hollow portion (indoor hollow portion) that includes the indoor end of the vertical frame body 50, and protrudes to a position further indoor than the panel body 2A and the retaining portion 51. The indoor portion 52 is connected to the retaining portion 51 on the indoor side of the panel body 2A, protrudes from the retaining portion 51 to the indoor side, and is positioned on the indoor side of the panel body 2A.

[0026] The first mounting portion 53 and the second mounting portion 54 of the vertical frame body 50 are spaced apart in the indoor-outdoor direction S and extend in the longitudinal direction of the vertical frame 6 and the vertical frame body 50. The first mounting portion 53 is an outdoor mounting portion located on the outdoor side of the second mounting portion 54 and is located on the indoor side of the overhang portion 6A of the vertical frame 6. The second mounting portion 54 is an indoor mounting portion located on the indoor side of the first mounting portion 53 and is spaced apart from the first mounting portion 53 on the indoor side. The watertight material 70 is attached to the first mounting portion 53 and the airtight material 71 is attached to the second mounting portion 54.

[0027] The protruding portion 55 of the vertical frame body 50 is a hollow portion (outdoor hollow portion) including the outdoor end of the vertical frame body 50, and protrudes to a position further outdoors than the panel body 2A and the retaining portion 51. The protruding portion 55 is on the outdoor side of the retaining portion 51, connects to the retaining portion 51, protrudes from the retaining portion 51 to the outdoor side, and is arranged along the indoor-outdoor direction S. The protruding portion 55 also has an engaged portion 55A into which the overhanging member 60 engages, and a fixed portion 55B into which the overhanging member 60 is fixed. The engaged portion 55A and the fixed portion 55B are provided at the outdoor end (tip) of the protruding portion 55. In the left-right direction R, the fixed portion 55B is located on the opening 3A side (opposite side of the gap 8) of the frame body 3 relative to the engaged portion 55A, and protrudes toward the opening 3A side.

[0028] The overhanging member 60 is a decorative element of the curtain wall unit 2 and extends outward from the vertical frame body 50. Here, the overhanging member 60 is a vertical fin and is located on the outdoor side of the projection 55 of the vertical frame body 50, extending outward from the projection 55. The overhanging member 60 is attached to the projection 55 on the outdoor side of the projection 55, extends outward from the projection 55, and is arranged along the indoor-outdoor direction S.

[0029] The overhanging member 60 has an engaging portion 61 that engages with the projection 55, a fixing portion 62 that is fixed to the projection 55 by a fixing device 80, and a concave groove portion 63. The engaging portion 61 and the fixing portion 62 are provided at the interior end of the overhanging member 60. In the left-right direction R, the fixing portion 62 is located on the opening 3A side of the frame 3 relative to the engaging portion 61 and protrudes toward the opening 3A. The groove portion 63 is formed on the exterior portion of the overhanging member 60, including the exterior end of the overhanging member 60, and is open toward the opposite side of the opening 3A (the side opposite the opening) in the left-right direction R. The opposite side of the opening 3A is the gap 8 side.

[0030] The engaging portion 61 of the overhanging member 60 engages with the engaged portion 55A of the projection 55. In this state, the fixing portion 62 of the overhanging member 60 abuts against the fixed portion 55B of the projection 55 from the outside and is positioned overlapping the fixed portion 55B. The fastener 80 consists of a bolt and a nut, which fixes the fixing portion 62 of the overhanging member 60 to the fixed portion 55B of the projection 55. As a result, the overhanging member 60 (in this case, the indoor end) is attached to the outdoor end of the projection 55 and extends outwards from the outdoor end of the projection 55.

[0031] The overhang portion 6A of the vertical frame 6, the protruding portion 55 of the vertical frame body 50, the overhanging member 60, and the gap 8 are located on the outdoor side of the panel body 2A and the holding portion 51 of the vertical frame body 50. The overhang portion 6A consists of the protruding portion 55 and the overhanging member 60, and extends outward from the panel body 2A and the holding portion 51. The overhang portion 6A is connected to the holding portion 51 on the outdoor side of the holding portion 51, extends outward from the holding portion 51, and is arranged along the indoor-outdoor direction S.

[0032] The protruding portion 6A of the vertical frame 6 is positioned opposite to the protruding portion 6A of another vertical frame 6 adjacent to it in the left-right direction R, with a gap 8 in between. The projection 55 of the protruding portion 6A forms a gap 8 between it and the projection 55 of the protruding portion 6A of another vertical frame 6, and is positioned opposite to the projection 55 of the protruding portion 6A of another vertical frame 6, with a gap 8 in between. The protruding member 60 of the protruding portion 6A forms a gap 8 between it and the protruding member 60 of the protruding portion 6A of another vertical frame 6, and is positioned opposite to the protruding member 60 of the protruding portion 6A of another vertical frame 6, with a gap 8 in between.

[0033] The protruding portion 6A of the vertical frame 6 has an outdoor end face portion 6B, left and right side portions 6C and 6D (first side portion 6C, second side portion 6D), and five receiving portions 6E to 6I (first receiving portion 6E, second receiving portion 6F, third receiving portion 6G, fourth receiving portion 6H, fifth receiving portion 6I) that receive the covers 30 and 40. The end face portion 6B of the protruding portion 6A is the outdoor end face (tip face) of the protruding material 60 and the protruding portion 6A, and is positioned facing outwards. The end face portion 6B is also the outdoor wall portion of the groove portion 63, and the outdoor visible portion (end face) of the protruding material 60 and the protruding portion 6A, and is positioned along the visible direction (left-right direction R) of the vertical frame 6.

[0034] The left and right side portions 6C and 6D of the overhang portion 6A are the parts that form the protruding portion 55, the overhanging member 60, and the left and right side portions of the overhang portion 6A when viewed from the outside of the overhang portion 6A, and are located on one side and the other side of the overhang portion 6A in the left-right direction R, and are arranged toward the left and right sides of the overhang portion 6A. The side portions 6C and 6D are the left and right projection portions (first projection portion and second projection portion) of the overhang portion 6A and are arranged along the projection direction (indoor-outdoor direction S) of the vertical frame 6. The side portions 6C and 6D consist of the side portions 6C and 6D of the protruding portion 55 and the side portions 6C and 6D of the overhanging member 60, respectively, which are continuous in the indoor-outdoor direction S, and are located between the end face portion 6B of the overhang portion 6A and the holding portion 51 of the vertical frame body 50.

[0035] The first side portion 6C is located on the side of the opening 3A of the frame 3 in the left-right direction R of the protruding portion 6A, and the second side portion 6D is located on the opposite side of the opening 3A (the gap 8 side) in the left-right direction R of the protruding portion 6A. The fixed portion 55B of the projection 55 and the fixed portion 62 of the protruding member 60 are provided on the first side portion 6C and are located in the middle of the first side portion 6C in the indoor-outdoor direction S. The groove portion 63 of the protruding member 60 is provided on the second side portion 6D and is formed on the indoor side of the end face portion 6B and on the outdoor side portion of the second side portion 6D, including the outdoor end of the second side portion 6D. The gap 8 is formed between the second side portions 6D of the protruding portions 6A of adjacent vertical frames 6 in the left-right direction R.

[0036] The receiving portions 6E to 6I of the protruding portion 6A are the mounting portions to which the covers 30 and 40 are attached. The first receiving portion 6E, the second receiving portion 6F, and the third receiving portion 6G are provided on the first side portion 6C. The fourth receiving portion 6H is provided on the end portion 6B and the second side portion 6D, and the fifth receiving portion 6I is provided on the second side portion 6D.

[0037] The first support portion 6E is located at the indoor end of the protruding portion 55, the overhanging portion 6A, and the first side portion 6C. The second support portion 6F is located at the outdoor end of the protruding portion 55 and is also located midway between the overhanging portion 6A and the first side portion 6C in the indoor-outdoor direction S. The third support portion 6G is located at the outdoor end of the overhanging member 60, the overhanging portion 6A, and the first side portion 6C. The fourth support portion 6H is located at the outdoor end of the overhanging member 60, the overhanging portion 6A, and the second side portion 6D and is also located at the end of the end face portion 6B on the gap 8 side. The fifth support portion 6I is located midway between the overhanging member 60, the overhanging portion 6A, and the second side portion 6D in the indoor-outdoor direction S. The fourth support portion 6H and the fifth support portion 6I are located on one side and the other side of the groove portion 63 in the indoor-outdoor direction R.

[0038] The vertical frame 6 has a watertight material 73 attached to the second side portion 6D of the protruding portion 6A of the vertical frame 6. The watertight material 73 is attached to the groove portion 63 of the protruding member 60 of the second side portion 6D and to the portion adjacent to the interior side of the fifth receiving portion 6I, and extends in the longitudinal direction (up and down direction) of the vertical frame 6 and the protruding portion 6A. The watertight material 73 is also spaced apart from the end face portion 6B towards the interior side, and protrudes from the second side portion 6D toward the gap 8 at a position adjacent to the interior side of the groove portion 63. In the gap 8, the watertight material 73 of the vertical frame 6 is arranged to overlap with the watertight material 73 of other vertical frame 6 adjacent in the left-right direction R in the interior-outterior direction S. The overlapping watertight materials 73 seal the area between the protruding portions 6A (second side portion 6D) of vertical frames 6A adjacent in the left-right direction R.

[0039] The gap 8 is partitioned in the indoor-outdoor direction S by watertight material 73 on adjacent vertical frames 6 in the left-right direction R. The gap 8 is partitioned by the watertight material 73 into an indoor space 8A and an outdoor space 8B. The indoor space 8A is the space located on the indoor side of the watertight material 73 in the gap 8, and is formed by the portion of the second side surface 6D that is on the indoor side of the watertight material 73. The outdoor space 8B is the space located on the outdoor side of the watertight material 73 in the gap 8, and is formed to the side of the groove 63, which is the portion of the second side surface 6D that is on the outdoor side of the watertight material 73. The watertight material 73 is located between the indoor space 8A and the outdoor space 8B of the gap 8. When the protruding portion 6A of adjacent vertical frames 6 in the left-right direction R is viewed from the outside, the watertight material 73 shields the indoor space 8A of the gap 8, the portion of the second side portion 6D that is on the indoor side of the watertight material 73, and the portion of the protruding portion 6A that faces the indoor space 8A. The outdoor space 8B of the gap 8 is open toward the outside of the vertical frame 6.

[0040] Covers 30 and 40 cover the exposed portion 6J of the protruding portion 6A of the vertical frame 6 on the outdoor side of the panel body 2A, thereby shielding the exposed portion 6J. The exposed portion 6J is the part of the protruding portion 6A that is exposed to the outside of the protruding portion 6A. Also, when the protruding portions 6A of the vertical frames 6 of the left and right curtain wall units 2 are adjacent in the left-right direction R, the outside of the protruding portion 6A is the part that is outside the adjacent left and right protruding portions 6A, and the exposed portion 6J is the part that is exposed to the outside of the adjacent left and right protruding portions 6A. Without covers 30 and 40, the exposed portion 6J is exposed on the outdoor side of the curtain wall unit 2 and is exposed to the outside air.

[0041] The curtain wall unit 2 is equipped with five insulating materials 74 interposed between the overhang portion 6A of the vertical frame 6 (in this case, the exposed portion 6J of the overhang portion 6A) and the covers 30 and 40. The covers 30 and 40 are mounted on the overhang portion 6A at a position on the outdoor side of the panel body 2A, with the insulating materials 74 interposed between them and the overhang portion 6A. The insulating materials 74 are provided between the overhang portion 6A and the covers 30 and 40 and are in contact with the overhang portion 6A and the covers 30 and 40.

[0042] The insulating material 74 is an elastically deformable insulating material (in this case, an elastic insulating rubber) that has a heat insulating function, and the entire covers 30 and 40 are positioned away from the protruding portion 6A and exposed portion 6J of the vertical frame 6. The insulating material 74 is a solid insulating material (solid heat insulating material) and is provided over the entire length (up and down direction) of the protruding portion 6A, or at multiple locations in the length of the protruding portion 6A. Here, the insulating material 74 is provided over the entire length of the protruding portion 6A and is sandwiched between the protruding portion 6A and the covers 30 and 40. In addition, the insulating material 74 is provided at multiple locations between the protruding portion 6A and the covers 30 and 40. Covers 30 and 40 are positioned with a gap between them and the protruding portion 6A and exposed portion 6J, without contacting them throughout their entirety, due to the insulating material 74.

[0043] Covers 30 and 40 are located on the outdoor side of the panel body 2A and cover the entire exposed portion 6J of the protruding portion 6A of the vertical frame 6 outside the protruding portion 6A. Here, the exposed portion 6J is the groove portion 63, which is the outdoor side of the watertight material 73 of the end face portion 6B, the first side portion 6C, and the second side portion 6D, and the receiving portions 6E to 6I, and the receiving portions 6E to 6I are provided on the exposed portion 6J. The end face portion 6B, the first side portion 6C, and the first to fourth receiving portions 6E to 6H, which are the exposed portion 6J, are covered by the first cover 30. The first cover 30 is positioned on the opening 3A side and the outdoor side of the frame body 3 relative to the protruding portion 6A, covering the exposed portion 6J from the opening 3A side and the outdoor side. In addition, the end face portion 6B, the groove portion 63, and the fourth and fifth receiving portions 6H and 6I, which are the exposed portion 6J, are covered by the second cover 40. The second cover 40 is positioned on the gap 8 side relative to the protruding portion 6A, and covers the exposed portion 6J from the gap 8 side.

[0044] The first cover 30 has two plate-shaped covering parts 31 and 32 (first covering part 31, second covering part 32), a gap-filling material 33 attached to the first covering part 31, and four mounting parts 34 to 37 (first mounting part 34, second mounting part 35, third mounting part 36, fourth mounting part 37) that are attached to the protruding part 6A of the vertical frame 6. The first covering part 31 is located on the opening 3A side of the frame body 3 with respect to the first side part 6C, which is the exposed part 6J, and is arranged along the indoor-outdoor direction S, covering the first side part 6C from the opening 3A side while being separated from the first side part 6C. In addition, the first covering part 31 is separated from the holding part 51 of the vertical frame body 50 toward the outdoor side, and is arranged with a gap between it and the holding part 51 of the vertical frame body 50. The gap-filling material 33 protrudes from the first cover portion 31 toward the interior side and is positioned in the gap between the first cover portion 31 and the holding portion 51 of the vertical frame body 50, and abuts against the holding portion 51 of the vertical frame body 50, thereby sealing the gap between the first cover portion 31 and the holding portion 51 of the vertical frame body 50. In this state, the gap-filling material 33, together with the first cover portion 31, covers the first side portion 6C from the opening 3A side while being separated from the first side portion 6C.

[0045] The second covering portion 32 is connected to the outdoor end of the first covering portion 31 and protrudes from the outdoor end of the first covering portion 31 toward the gap 8 (outdoor space 8B). The second covering portion 32 is located on the outdoor side of the exposed end face portion 6B, which is the end face portion 6B, and is arranged along the left-right direction R, covering the end face portion 6B from the outdoor side while being separated from the end face portion 6B.

[0046] The first mounting portion 34 is located at the indoor end of the first covering portion 31 and the first cover 30. The second mounting portion 35 is located at the midpoint of the first covering portion 31 and the first cover 30 in the indoor-outdoor direction S. The third mounting portion 36 and the fourth mounting portion 37 are located at the outdoor end of the first cover 30. Furthermore, the third mounting portion 36 is located at the midpoint of the second covering portion 32 in the left-right direction R, and the fourth mounting portion 37 is located at the tip of the second covering portion 32 on the gap 8 side.

[0047] The insulating material 74 is provided between the first mounting portion 34 and the first receiving portion 6E, between the second mounting portion 35 and the second receiving portion 6F, between the third mounting portion 36 and the third receiving portion 6G, and between the fourth mounting portion 37 and the fourth receiving portion 6H. The mounting portions 34-37 and the first cover 30 are supported by the receiving portions 6E-6H with the insulating material 74 interposed between them and the receiving portions 6E-6H of the protruding portion 6A, and are mounted on the receiving portions 6E-6H and the exposed portion 6J (end face portion 6B, first side portion 6C) of the protruding portion 6A. In this state, the first cover 30 is fixed to the exposed portion 6J (first side portion 6C of the protruding portion 55) of the protruding portion 6A by fasteners 81 which are screws. The fasteners 81 fix the first mounting portion 34 of the first cover 30 to the exposed portion 6J.

[0048] The second cover 40 has a covering portion 41 and two mounting portions 42 and 43 (outdoor mounting portion 42, indoor mounting portion 43) that are attached to the protruding portion 6A of the vertical frame 6. The covering portion 41 is a groove formed in the groove portion of the second cover 40, and is located on the gap 8 (outdoor space 8B) side of the groove portion 63 of the second side portion 6D, which is the exposed portion 6J, and is positioned within the groove portion 63. The covering portion 41 also covers the groove portion 63 from the gap 8 side while being separated from the groove portion 63. The covering portion 41 is located on the indoor side of the end face portion 6B, which is the exposed portion 6J, and covers the end face portion 6B from the indoor side while being separated from the end face portion 6B.

[0049] The outdoor mounting portion 42 is located at the outdoor end of the cover portion 41, and the indoor mounting portion 43 is located at the indoor end of the cover portion 41. The insulating material 74 is provided between the outdoor mounting portion 42 and the fourth receiving portion 6H, and between the indoor mounting portion 43 and the fifth receiving portion 6I. The mounting portions 42, 43 and the second cover 40 are received by the receiving portions 6H, 6I of the protruding portion 6A with the insulating material 74 interposed between them, and are mounted on the receiving portions 6H, 6I and the exposed portion 6J of the protruding portion 6A (end face portion 6B, groove portion 63 of the second side portion 6D). In this state, the second cover 40 is fixed to the exposed portion 6J (groove portion 63) of the protruding portion 6A by fasteners 82 which are screws. The fasteners 82 fix the cover portion 41 of the second cover 40 to the exposed portion 6J.

[0050] Covers 30 and 40 have groove-shaped guide rails 90 that guide the gondola 20. The guide rails 90 are formed on covers 30 and 40 located on one side in the left-right direction R of the overhang portion 6A of the vertical frame 6, and constitute a part of covers 30 and 40. Here, one side in the left-right direction R is the gap 8 side, and the guide rails 90 are integrally formed with the second cover 40. The second cover 40 is located on the gap 8 side of the overhang portion 6A and covers the exposed portion 6J on the gap 8 side of the overhang portion 6A. The guide rails 90 are groove-shaped covering portions 41 of the second cover 40 and are open toward the gap 8 side in the left-right direction R. The second cover 40 and the guide rails 90 are located on the exterior side of the panel body 2A and extend in the longitudinal direction of the overhang portion 6A. The guide rails 90 of the curtain wall units 2 arranged vertically are aligned vertically with their positions in the interior-exterior direction S and left-right direction R aligned with each other.

[0051] The gondola 20 has a gondola body (not shown) on which a person rides, a plurality (two in Figure 3) of guide rollers 21 guided by the guide rail 90 of the second cover 40, and a rod-shaped connecting member 22 that connects the guide rollers 21 to the gondola body. The gondola body moves vertically on the outdoor side of the curtain wall 1 and the curtain wall unit 2. The connecting member 22 extends from the gondola body toward the overhang 6A of the vertical frame 6. The guide rollers 21 are rotatably provided at the tip of the connecting member 22, positioned inside the guide rail 90, and guided by the guide rail 90. The guide rollers 21 and the gondola 20 are guided by the guide rail 90 in the longitudinal direction of the guide rail 90 and the vertical frame 6, and move in the longitudinal direction of the vertical frame 6.

[0052] The second cover 40 and guide rail 90 are located on the gap 8 (outdoor space 8B) side of the outdoor portion of the protruding portion 6A, and cover the exposed portion 6J (groove portion 63, end face portion 6B) on the gap 8 side of the outdoor portion of the protruding portion 6A. The second covers 40 and guide rails 90 of adjacent curtain wall units 2 in the left-right direction R are each provided on the gap 8 side of the protruding portion 6A of the vertical frame 6, and are adjacent in the left-right direction R with the outdoor space 8B of the gap 8 in between. The adjacent second covers 40 and guide rails 90 in the left-right direction R form the outdoor space 8B of the gap 8 between them, and are arranged adjacent to each other on the left-right direction R, separated in the left-right direction R. The connecting member 22 extends from the gondola body to the outdoor space 8B of the gap 8, and the connecting member 22 and guide roller 21 are arranged in the outdoor space 8B of the gap 8. The guide rollers 21 are positioned inside each of the adjacent guide rails 90 in the left-right direction R within the outdoor space 8B of the gap 8, and are guided by the guide rails 90.

[0053] In the curtain wall unit 2 described above, the covers 30 and 40 prevent the exposed portion 6J of the overhang portion 6A of the vertical frame 6 from being exposed to the outside air, thereby suppressing the cooling of the overhang portion 6A and the vertical frame 6 by the outside air. Furthermore, when the temperature of the covers 30 and 40 decreases due to the outside air, the insulating material 74 inhibits heat transfer between the overhang portion 6A and the covers 30 and 40, thereby preventing the cooling of the overhang portion 6A and the vertical frame 6 by heat transfer to the covers 30 and 40. The watertight material 73 of the vertical frame 6 adjacent to each other in the left-right direction R also prevents the overhang portion 6A and the vertical frame 6 from being cooled by the outside air. As a result, the temperature drop of the vertical frame 6 due to the overhang portion 6A can be mitigated, and condensation can be suppressed on the indoor surface of the vertical frame 6 that is positioned facing the room.

[0054] By covering the entire exposed portion 6J of the protruding portion 6A with covers 30 and 40, it is possible to prevent outside air from directly contacting the protruding portion 6A, thereby mitigating the temperature drop of the protruding portion 6A and the vertical frame 6. Furthermore, the covers 30 and 40 prevent the exposed portion 6J of the protruding portion 6A, which consists of the protruding portion 55 of the vertical frame body 50 and the protruding material 60 attached to the protruding portion 55, from being exposed to the outside air, thereby suppressing the temperature drop of the protruding portion 6A and the vertical frame 6.

[0055] The guide rail 90 needs to be installed on the outdoor side of the curtain wall unit 2, exposed to the outside air, in order to guide the gondola 20, and is therefore exposed to the outside air. In contrast, by installing the guide rail 90 on the second cover 40, the overhang 6A is prevented from being exposed to the outside air, and the cooling of the overhang 6A and the vertical frame 6 by the outside air can be mitigated. However, the guide rail 90 may also be formed on the first cover 30 located on the side of the opening 3A of the frame body 3 in the left-right direction R of the overhang 6A. In this case, the guide rail 90 can be formed at any position in the indoor-outdoor direction R of the first cover 30 (for example, on the outdoor side, on the indoor side, or in the middle of the indoor-outdoor direction R). In this way, regardless of which side of the left-right direction R of the overhang 6A the guide rail 90 is installed on, it is possible to suppress the occurrence of condensation on the indoor surface of the vertical frame 6.

[0056] Depending on the configuration of the exposed portion 6J of the protruding portion 6A, the exposed portion 6J may be covered with only one cover, or it may be covered with multiple covers. Furthermore, the protruding material 60 is not limited to decorative material, but may be other protruding material that extends outwards. Guide rails 90 do not need to be formed on covers 30 and 40, for example, when it is not necessary to guide the gondola.

[0057] The vertical frame 6 may be covered with a cover (indoor cover) on the indoor side of the panel body 2A. In this case, an insulating material is interposed between the vertical frame 6 and the indoor cover, and the indoor cover is attached to the vertical frame 6. Furthermore, the present invention is not limited to a curtain wall unit 2 equipped with a fixed panel body 2A, but can be applied to various curtain wall units (for example, a curtain wall unit equipped with an openable or movable panel body).

[0058] Next, we will describe curtain wall unit 2 in other embodiments. In the following embodiments, we will omit explanations of matters that are the same as in the first embodiment and mainly explain matters that differ from the first embodiment. In addition, in the following embodiments, the same names as in the first embodiment will be used for configurations that correspond to the configuration of the first embodiment.

[0059] (Second Embodiment) Figure 5 is a cross-sectional view showing the curtain wall unit 2 of the second embodiment, and, similar to Figure 3, shows the portion of the vertical frame 6 side of two adjacent curtain wall units 2 in the left-right direction R. Figure 6 is a cross-sectional view showing the vertical frame 6 and covers 30 and 40 of the curtain wall unit 2 of the second embodiment disassembled, and, similar to Figure 4, shows the left vertical frame 6 and cover 30 and 40 of the left and right vertical frame 6 and covers 30 and 40 shown in Figure 5.

[0060] As shown in the figure, in the curtain wall unit 2 of the second embodiment, the vertical frame 6 has a vertical frame body 50 that forms an opening 3A, and the vertical frame body 50 has a projection 55 that protrudes to a position on the exterior side of the panel body 2A. However, the vertical frame 6 does not have an overhanging member 60, and the overhanging portion 6A of the vertical frame 6 is the projection 55 of the vertical frame body 50. Thus, the overhanging portion 6A does not include an overhanging member 60 and consists only of the projection 55 of the vertical frame body 50.

[0061] The protruding portion 55 of the vertical frame body 50 does not have an engaged portion 55A and a fixed portion 55B, but has a concave groove portion 56. The groove portion 56 of the protruding portion 55 is configured in the same way as the groove portion 63 of the overhanging member 60 of the first embodiment, and is formed on the outdoor portion of the protruding portion 55, including the outdoor end of the protruding portion 55, and is open toward the gap 8 in the left-right direction R.

[0062] The end face portion 6B of the protruding portion 6A is the outer end face (tip face) of the projection 55, and is the outer visible portion (end face) of the projection 55. The left and right side portions 6C and 6D of the protruding portion 6A are the side portions 6C and 6D of the projection 55, respectively. The groove portion 56 of the projection 55 is provided on the second side portion 6D and is formed on the outer portion of the second side portion 6D, including the inner end face portion 6B and the outer end of the second side portion 6D.

[0063] The protruding portion 6A of the vertical frame 6 has four receiving portions 6E to 6H (first receiving portion 6E, second receiving portion 6F, third receiving portion 6G, and fourth receiving portion 6H). The first receiving portion 6E and the second receiving portion 6F are provided on the first side portion 6C. The first receiving portion 6E is located at the indoor end of the protruding portion 55, the protruding portion 6A, and the first side portion 6C, while the second receiving portion 6F is located at the outdoor end of the protruding portion 55, the protruding portion 6A, and the first side portion 6C. The third receiving portion 6G is provided on the end face portion 6B and the second side portion 6D, and is located at the outdoor end of the protruding portion 55, the protruding portion 6A, and the second side portion 6D, as well as at the end of the end face portion 6B on the gap 8 side. The fourth receiving portion 6H is provided on the second side portion 6D and is located midway between the protruding portion 55, the overhanging portion 6A, and the second side portion 6D in the indoor-outdoor direction S. The third receiving portion 6G and the fourth receiving portion 6H are located on one side and the other side of the groove portion 56 in the indoor-outdoor direction R.

[0064] The watertight material 73 is attached to the groove 56 of the projection 55 of the second side portion 6D and to the portion adjacent to the interior side of the fourth receiving portion 6H, and extends in the longitudinal direction (up and down direction) of the vertical frame 6 and the projection 55. The watertight material 73 also protrudes from the second side portion 6D toward the gap 8 at a position adjacent to the interior side of the groove 56. The exterior space 8B of the gap 8 is formed to the side of the groove 56, which is the portion of the second side portion 6D that is on the exterior side of the watertight material 73.

[0065] The curtain wall unit 2 is equipped with four insulating materials 74. The exposed portion 6J of the overhang 6A is the groove 56, which is the portion on the outdoor side of the watertight material 73 of the end face 6B, the first side 6C, and the second side 6D, and the receiving portions 6E to 6H. The exposed portion 6J, which is the end face 6B, the first side 6C, and the first to third receiving portions 6E to 6G, is covered by the first cover 30. The exposed portion 6J, which is the end face 6B, the groove 56, and the third and fourth receiving portions 6G and 6H, is covered by the second cover 40.

[0066] The first cover 30 has three mounting parts 34-36 (first mounting part 34, second mounting part 35, and third mounting part 36). The first mounting part 34 is located at the indoor end of the first covering part 31 and the first cover 30. The second mounting part 35 and the third mounting part 36 are located at the outdoor end of the first cover 30. The second mounting part 35 is located in the middle of the left-right direction R of the second covering part 32, and the third mounting part 36 is located at the tip of the second covering part 32 on the gap 8 side.

[0067] The insulating material 74 is provided between the first mounting portion 34 and the first receiving portion 6E, between the second mounting portion 35 and the second receiving portion 6F, and between the third mounting portion 36 and the third receiving portion 6G. The mounting portions 34-36 and the first cover 30 are supported by the receiving portions 6E-6G with the insulating material 74 interposed between them and the receiving portions 6E-6G of the protruding portion 6A, and are mounted on the receiving portions 6E-6G and the exposed portion 6J (end face portion 6B, first side portion 6C) of the protruding portion 6A.

[0068] The covering portion 41 of the second cover 40 is positioned on the gap 8 (outdoor space 8B) side with respect to the groove portion 56 of the second side portion 6D, which is the exposed portion 6J, and is placed inside the groove portion 56, covering the groove portion 56 from the gap 8 side while being separated from the groove portion 56. The insulating material 74 is provided between the outdoor mounting portion 42 and the third receiving portion 6G of the second cover 40, and between the indoor mounting portion 43 and the fourth receiving portion 6H of the second cover 40. The mounting portions 42, 43 and the second cover 40 are supported by the receiving portions 6G, 6H with the insulating material 74 interposed between them and the receiving portions 6G, 6H of the protruding portion 6A, and are mounted on the receiving portions 6G, 6H and the exposed portion 6J of the protruding portion 6A (end face portion 6B, groove portion 56 of the second side portion 6D). In this state, the second cover 40 is fixed to the exposed portion 6J (groove portion 56) of the protruding portion 6A by the fastener 82. The second cover 40 and the guide rail 90 cover the groove portion 56.

[0069] In the curtain wall unit 2 of the second embodiment, the exposed portion 6J of the overhang portion 6A, which is the protruding portion 55 of the vertical frame body 50, is prevented from being exposed to the outside air, thereby suppressing a decrease in the temperature of the overhang portion 6A and the vertical frame 6.

[0070] (Third embodiment) Figure 7 is a cross-sectional view showing the curtain wall unit 2 of the third embodiment, and, similar to Figure 5, shows the portion of the vertical frame 6 side of two adjacent curtain wall units 2 in the left-right direction R. Figure 8 is a cross-sectional view showing the vertical frame 6 and covers 30 and 40 of the curtain wall unit 2 of the third embodiment in an exploded view, and, similar to Figure 6, shows the left vertical frame 6 and cover 30 and 40 of the left and right vertical frame 6 and covers 30 and 40 shown in Figure 7.

[0071] As shown in the figure, in the curtain wall unit 2 of the third embodiment, the vertical frame 6 has a vertical frame body 50 that forms an opening 3A, and the vertical frame body 50 has a protruding portion 55 that extends to a position on the exterior side of the panel body 2A. However, the vertical frame 6 does not have an overhanging member 60, and the overhanging portion 6A of the vertical frame 6 is the protruding portion 55 of the vertical frame body 50. Thus, the overhanging portion 6A does not include an overhanging member 60 and consists only of the protruding portion 55 of the vertical frame body 50.

[0072] The projection 55 of the vertical frame body 50 does not have an engaged portion 55A and a fixed portion 55B, but has a projection 57. The projection 57 is provided at the outdoor end of the projection 55 and protrudes toward the opening 3A of the frame body 3 in the left-right direction R. The end face portion 6B of the overhang 6A is the outdoor end face (tip face) of the projection 55, and is the outdoor visible portion (end face) of the projection 55 including the projection 57. The left and right side portions 6C and 6D of the overhang 6A are the side portions 6C and 6D of the projection 55, respectively. The projection 57 is located at the outdoor end of the first side portion 6C.

[0073] The protruding portion 6A of the vertical frame 6 has three receiving portions 6E to 6G (first receiving portion 6E, second receiving portion 6F, and third receiving portion 6G). The first receiving portion 6E and the second receiving portion 6F are provided on the first side portion 6C and are located on the protruding portion 55, the protruding portion 6A, and the indoor end of the first side portion 6C. The third receiving portion 6G is a projection 57 and is provided on the end face portion 6B and is located on the outdoor end of the protruding portion 55, the protruding portion 6A, and the first side portion 6C, as well as on the opening 3A side of the end face portion 6B.

[0074] The curtain wall unit 2 is equipped with four insulating materials 74. The exposed portion 6J of the overhang 6A is the end face portion 6B, the first side portion 6C, and the receiving portions 6E to 6G. The exposed portion 6J, consisting of the end face portion 6B, the first side portion 6C, and the receiving portions 6E to 6G, is covered by the first cover 30. The first cover 30 is positioned on the opening 3A side of the frame 3 relative to the overhang 6A, covering the exposed portion 6J from the opening 3A side. The exposed portion 6J, consisting of the end face portion 6B and the third receiving portion 6G, is covered by the second cover 40. The second cover 40 is positioned on the outdoor side of the overhang 6A, covering the exposed portion 6J from the outdoor side.

[0075] The first cover 30 does not have a second covering portion 32 and has a concave groove portion 38 formed in the first covering portion 31. The groove portion 38 is formed on the outdoor side portion of the first cover 30 and the first covering portion 31 and is open toward the opening 3A side of the frame 3 in the left-right direction R. The first covering portion 31 covers the first side portion 6C and is located on the indoor side relative to the end surface portion 6B (projection 57), which is the exposed portion 6J, and covers the end surface portion 6B from the indoor side, separated from the end surface portion 6B by the outdoor side wall portion of the groove portion 38. The first cover 30 has three mounting portions 34-36 (first mounting portion 34, second mounting portion 35, and third mounting portion 36). The first mounting portion 34 and the second mounting portion 35 are located at the indoor end portions of the first covering portion 31 and the first cover 30. The third mounting portion 36 is located at the outdoor end portion of the first cover 30.

[0076] The insulating material 74 is provided between the first mounting portion 34 and the first receiving portion 6E, between the second mounting portion 35 and the second receiving portion 6F, and between the third mounting portion 36 and the third receiving portion 6G. The insulating material 74 between the first mounting portion 34 and the first receiving portion 6E is fixed to the exposed portion 6J of the protruding portion 6A (the first side portion 6C of the protruding portion 55) by a fastener 83 which is a screw. The mounting portions 34-36 and the first cover 30 are received by the receiving portions 6E-6G with the insulating material 74 interposed between them and the receiving portions 6E-6G of the protruding portion 6A, and are mounted to the receiving portions 6E-6G and the exposed portion 6J of the protruding portion 6A (end face portion 6B, first side portion 6C). In this state, the second mounting portion 35 of the first cover 30 is fixed to the exposed portion 6J (the first side portion 6C of the protruding portion 55) by a fastener 81.

[0077] The covering portion 41 of the second cover 40 is formed in a hollow shape. The covering portion 41 is located on the outdoor side of the end face portion 6B, which is the exposed portion 6J, and covers the end face portion 6B from the outdoor side while being separated from the end face portion 6B. The second cover 40 does not have an outdoor mounting portion 42 and an indoor mounting portion 43, but has a mounting portion 44 (opposing mounting portion) that faces the end face portion 6B. The insulating material 74 is provided between the mounting portion 44 of the second cover 40 and the third receiving portion 6G. The mounting portion 44 and the second cover 40 are received by the third receiving portion 6G with the insulating material 74 interposed between them and the third receiving portion 6G of the protruding portion 6A, and are mounted on the third receiving portion 6G and the exposed portion 6J (end face portion 6B) of the protruding portion 6A. In that state, the second cover 40 is fixed to the exposed portion 6J (the projection 57 which is the end face portion 6B) of the protruding portion 6A by the fastener 82.

[0078] The watertight material 73 is installed sandwiched between the end face portion 6B and the second cover 40 at the location on the gap 8 side between the protruding portion 6A and the second cover 40, and extends in the longitudinal direction of the vertical frame 6 and the protruding portion 55. In addition, the watertight material 73 protrudes from the second cover 40 toward the gap 8 side at the outdoor side position of the end face portion 6B, and is positioned on the outdoor side of the gap 8. The overlapping watertight materials 73 seal the area between adjacent second covers 40 in the left-right direction R. When the protruding portions 6A of adjacent vertical frames 6 in the left-right direction R are viewed from the outdoor side, the watertight material 73 of the adjacent vertical frames 6 in the left-right direction R shields the gap 8, the second side portion 6D, and the portion of the protruding portion 6A facing the gap 8.

[0079] The guide rail 90 is formed on the first cover 30 located on one side of the protruding portion 6A of the vertical frame 6 in the left-right direction R (here, the side of the opening 3A of the frame 3), and constitutes a part of the first cover 30. The first cover 30 is located on the side of the opening 3A of the protruding portion 6A and covers the exposed portion 6J of the protruding portion 6A on the side of the opening 3A. The guide rail 90 is a groove 38 of the first cover 30 and is open toward the opening 3A in the left-right direction R. The groove 38 of the first cover 30 and the guide rail 90 are located on the side of the opening 3A of the outdoor portion of the protruding portion 6A and cover the exposed portion 6J (end face portion 6B, first side portion 6C) of the outdoor portion of the protruding portion 6A on the side of the opening 3A. The connecting member 22 extends from the gondola body to the first cover 30. The guide roller 21 is located at the opening 3A relative to the guide rail 90 and is positioned inside the guide rail 90.

[0080] In the curtain wall unit 2 of the third embodiment, the exposed portion 6J of the overhang portion 6A, which is the protruding portion 55 of the vertical frame body 50, is prevented from being exposed to the outside air, thereby suppressing a decrease in the temperature of the overhang portion 6A and the vertical frame 6.

[0081] (Fourth Embodiment) Figure 9 is a cross-sectional view showing the curtain wall unit 2 of the fourth embodiment, and, similar to Figure 7, shows the portion of the vertical frame 6 side of two adjacent curtain wall units 2 in the left-right direction R. Figure 10 is a cross-sectional view showing the vertical frame 6 and covers 30 and 40 of the curtain wall unit 2 of the fourth embodiment in an exploded view, and, similar to Figure 8, shows the left vertical frame 6 and cover 30 and 40 of the left and right vertical frame 6 and covers 30 and 40 shown in Figure 9.

[0082] As shown in the figure, in the curtain wall unit 2 of the fourth embodiment, the vertical frame 6 has a vertical frame body 50 that forms an opening 3A and an overhanging member 60 that is attached to the vertical frame body 50 and extends outward from the vertical frame body 50. However, the vertical frame body 50 does not have a protruding portion 55, and the overhanging portion 6A of the vertical frame 6 is the overhanging member 60. Thus, the overhanging portion 6A does not include the protruding portion 55 of the vertical frame body 50 and consists only of the overhanging member 60.

[0083] The holding portion 51 of the vertical frame body 50 has a removable trim strip 51A, which holds the vertical edge portion 2B of the panel body 2A from the outside. The vertical frame body 50 also has a visible portion 58 on the outside and an engaged portion 58A into which the overhanging member 60 engages. The overhanging member 60 is located on the outside of the visible portion 58 and extends beyond the visible portion 58 to a position further outside. The visible portion 58 is located on the side of the gap 8 of the holding portion 51, and the engaged portion 58A is provided on the outside of the visible portion 58. The engaging portion 61 of the overhanging member 60 engages with the engaged portion 58A of the visible portion 58. In this state, the fixing device 80 fixes the overhanging member 60 to the visible portion 58. As a result, the overhanging member 60 (in this case, the end on the interior side) is attached to the exterior side of the visible portion 58, which is the exterior end of the vertical frame body 50, and extends outward from the visible portion 58.

[0084] The overhanging member 60 does not have a fixing portion 62 or a groove portion 63, but has a projection 64. The projection 64 is provided at the outdoor end of the overhanging member 60 and protrudes toward the opening 3A of the frame 3 in the left-right direction R. The end face portion 6B of the overhanging portion 6A is the outdoor end face portion of the overhanging member 60, including the projection 64. The left and right side portions 6C and 6D of the overhanging portion 6A are the side portions 6C and 6D of the overhanging member 60, respectively. The projection 64 is provided on the end face portion 6B and is located at the outdoor end of the first side portion 6C.

[0085] The overhang portion 6A of the vertical frame 6 has three receiving portions 6E to 6G (first receiving portion 6E, second receiving portion 6F, and third receiving portion 6G). The first receiving portion 6E and the second receiving portion 6F are provided on the first side portion 6C. The first receiving portion 6E is located at the indoor end of the overhang member 60, the overhang portion 6A, and the first side portion 6C, while the second receiving portion 6F is located in the middle of the overhang member 60, the overhang portion 6A, and the first side portion 6C in the indoor-outdoor direction S. The third receiving portion 6G is a projection 64, provided on the end face portion 6B, located at the outdoor end of the overhang member 60, the overhang portion 6A, and the first side portion 6C, and also located on the opening 3A side of the end face portion 6B.

[0086] The curtain wall unit 2 is equipped with four insulating materials 74. The exposed portion 6J of the overhang 6A is the end face portion 6B, the first side portion 6C, and the receiving portions 6E to 6G. The exposed portion 6J, consisting of the end face portion 6B, the first side portion 6C, and the receiving portions 6E to 6G, is covered by the first cover 30. The first cover 30 is positioned on the opening 3A side of the frame 3 relative to the overhang 6A, covering the exposed portion 6J from the opening 3A side. The exposed portion 6J, consisting of the end face portion 6B and the third receiving portion 6G, is covered by the second cover 40. The second cover 40 is positioned on the outdoor side of the overhang 6A, covering the exposed portion 6J from the outdoor side.

[0087] The first cover 30 does not have a second covering portion 32 and has a concave groove portion 38 formed in the first covering portion 31. The groove portion 38 is formed on the indoor side of the first cover 30 and the first covering portion 31 and is open toward the opening 3A side of the frame 3 in the left-right direction R. The first covering portion 31 covers the first side portion 6C and is located on the indoor side of the end surface portion 6B (projection 64), which is the exposed portion 6J, and covers the end surface portion 6B from the indoor side while being separated from the end surface portion 6B. The first cover 30 has three mounting portions 34-36 (first mounting portion 34, second mounting portion 35, and third mounting portion 36). The first mounting portion 34 is located at the indoor end of the first covering portion 31 and the first cover 30. The second mounting portion 35 is connected to the groove portion 38 and is located on the outdoor side of the groove portion 38, as well as in the middle of the indoor-outdoor direction R of the first covering portion 31 and the first cover 30. The third mounting portion 36 is located at the outdoor end of the first cover 30.

[0088] The insulating material 74 is provided between the first mounting portion 34 and the first receiving portion 6E, between the second mounting portion 35 and the second receiving portion 6F, and between the third mounting portion 36 and the third receiving portion 6G. The insulating material 74 between the first mounting portion 34 and the first receiving portion 6E is fixed to the exposed portion 6J of the protruding portion 6A (the first side portion 6C of the protruding material 60) by fasteners 83, which are screws. The mounting portions 34-36 and the first cover 30 are supported by the receiving portions 6E-6G with the insulating material 74 interposed between them and the receiving portions 6E-6G of the protruding portion 6A, and are attached to the receiving portions 6E-6G and the exposed portion 6J of the protruding portion 6A (end face portion 6B, first side portion 6C). In this state, the first cover 30 is fixed to the exposed portion 6J of the protruding portion 6A (the first side portion 6C of the protruding material 60) by fasteners 81. The fixing device 81 secures the second mounting portion 35 of the first cover 30 to the exposed portion 6J.

[0089] The covering portion 41 of the second cover 40 is formed in a hollow shape. The covering portion 41 is located on the outdoor side of the end face portion 6B, which is the exposed portion 6J, and covers the end face portion 6B from the outdoor side while being separated from the end face portion 6B. The second cover 40 does not have an outdoor mounting portion 42 and an indoor mounting portion 43, but has a mounting portion 44 (opposing mounting portion) that faces the end face portion 6B. The insulating material 74 is provided between the mounting portion 44 of the second cover 40 and the third receiving portion 6G. The mounting portion 44 and the second cover 40 are received by the third receiving portion 6G with the insulating material 74 interposed between them and the third receiving portion 6G of the protruding portion 6A, and are mounted on the third receiving portion 6G and the exposed portion 6J (end face portion 6B) of the protruding portion 6A. In that state, the second cover 40 is fixed to the exposed portion 6J (the projection 64 which is the end face portion 6B) of the protruding portion 6A by the fastener 82.

[0090] The watertight material 73 is installed sandwiched between the end face portion 6B and the second cover 40 at the location on the gap 8 side between the protruding portion 6A and the second cover 40, and extends in the longitudinal direction of the vertical frame 6 and the protruding portion 55. In addition, the watertight material 73 protrudes from the second cover 40 toward the gap 8 side at the outdoor side position of the end face portion 6B, and is positioned on the outdoor side of the gap 8. The overlapping watertight materials 73 seal the area between adjacent second covers 40 in the left-right direction R. When the protruding portions 6A of adjacent vertical frames 6 in the left-right direction R are viewed from the outdoor side, the watertight material 73 of the adjacent vertical frames 6 in the left-right direction R shields the gap 8, the second side portion 6D, and the portion of the protruding portion 6A facing the gap 8.

[0091] The guide rail 90 is formed on the first cover 30 located on one side of the protruding portion 6A of the vertical frame 6 in the left-right direction R (here, the side of the opening 3A of the frame 3), and constitutes a part of the first cover 30. The first cover 30 is located on the side of the opening 3A of the protruding portion 6A and covers the exposed portion 6J of the protruding portion 6A on the side of the opening 3A. The guide rail 90 is a groove 38 of the first cover 30 and is open toward the opening 3A in the left-right direction R. The groove 38 of the first cover 30 and the guide rail 90 are located on the side of the opening 3A of the interior portion of the protruding portion 6A and cover the exposed portion 6J (first side portion 6C) of the interior portion of the protruding portion 6A on the side of the opening 3A. The connecting member 22 extends from the gondola body to the first cover 30. The guide roller 21 is located on the inside of the guide rail 90 and is positioned at the opening 3A relative to the guide rail 90.

[0092] In the curtain wall unit 2 of the fourth embodiment, the exposed portion 6J of the overhang portion 6A, which is an overhanging member 60 attached to the vertical frame body 50, is prevented from being exposed to the outside air, thereby suppressing a decrease in the temperature of the overhang portion 6A and the vertical frame 6.

[0093] As described above, the curtain wall unit is A curtain wall unit comprising panel bodies arranged in an opening formed by vertical frames, The vertical frame has an overhang that extends to a position further outward than the panel body. A cover that covers the exposed portion that is exposed to the outside of the protruding portion, An insulating material interposed between the protruding portion and the cover, This is a curtain wall unit equipped with [a specific feature / feature]. Therefore, the temperature drop of the vertical frame caused by the overhang portion that extends outward from the panel body of the curtain wall unit can be mitigated, thereby suppressing the occurrence of condensation on the indoor surface of the vertical frame.

[0094] The cover has guide rails that guide the gondola. Therefore, it is possible to prevent the protruding portion from being exposed to the outside air and mitigate the cooling of the protruding portion and vertical frame by the outside air.

[0095] The guide rail is formed on the cover located on one side of the protruding portion in the left-right direction. Therefore, regardless of whether the guide rail is installed on the left or right side of the overhang, condensation can be prevented from occurring on the indoor surface of the vertical frame.

[0096] The vertical frame comprises a vertical frame body that forms the opening and an overhanging member attached to the vertical frame body. The vertical frame body has a protruding portion that extends to a position on the outdoor side of the panel body, The aforementioned overhanging member is attached to the aforementioned projection and extends outward from the aforementioned projection. The protruding portion consists of the protruding portion and the protruding member. Therefore, the cover prevents the protruding parts of the vertical frame body and the protruding members attached to the protruding parts from being exposed to the outside air, thereby suppressing a decrease in the temperature of the protruding parts and the vertical frame.

[0097] The aforementioned vertical frame has a vertical frame body that forms the opening, The vertical frame body has a protruding portion that extends to a position on the outdoor side of the panel body, The aforementioned protruding portion is the aforementioned projection. Therefore, by preventing the exposed portion of the overhang, which is the protruding part of the vertical frame body, from being exposed to the outside air, it is possible to suppress the temperature drop of the overhang and the vertical frame.

[0098] The vertical frame comprises a vertical frame body that forms the opening, and an overhanging member attached to the vertical frame body and extending outward from the vertical frame body. The aforementioned protruding portion is the aforementioned protruding member. Therefore, by preventing the exposed portion of the overhang, which is an overhang attached to the main body of the vertical frame, from being exposed to the outside air, it is possible to suppress the temperature drop of the overhang and the vertical frame. [Explanation of symbols]

[0099] 1...Curtain wall, 2...Curtain wall unit, 2A...Panel body, 2B...Vertical edge, 3...Frame body, 3A...Opening, 4...Upper frame, 5...Lower frame, 6...Vertical frame, 6A...Protruding part, 6B...End face, 6C...First side part, 6D...Second side part, 6E...First support part, 6F...Second support part, 6G...Third support part, 6H...Fourth support part, 6I...Fifth Receiving part, 6J... Exposed part, 7... Transom, 8... Gap, 8A... Indoor space, 8B... Outdoor space, 10... Building, 11... Exterior wall, 20... Gondola, 21... Guide roller, 22... Connecting member, 30... First cover, 31... First covering part, 32... Second covering part, 33... Gap sealing material, 34... First mounting part, 35... Second mounting part, 36... Third mounting part, 37... 4th mounting section, 38...groove section, 40...second cover, 41...covering section, 42...outdoor mounting section, 43...indoor mounting section, 44...mounting section, 50...vertical frame body, 51...holding section, 51A...pressing edge, 52...indoor section, 53...first mounting section, 54...second mounting section, 55...protrusion, 55A...engaging section, 55B...fixing section, 56...groove section, 57...projection 58...Visible part, 58A...Engaged part, 60...Protruding member, 61...Engaging part, 62...Fixing part, 63...Groove part, 64...Protruding piece, 70...Watertight material, 71...Airtight material, 72...Isobaric space, 73...Watertight material, 74...Insulating material, 80...Fixing device, 81...Fixing device, 82...Fixing device, 83...Fixing device, 90...Guide rail, R...Left-right direction, S...Indoor-outdoor direction.

Claims

1. A curtain wall unit comprising panel bodies arranged in an opening formed by vertical frames, The vertical frame has an overhang that extends to a position further outward than the panel body. A cover that covers the exposed portion that is exposed to the outside of the protruding portion, The system comprises an insulating material interposed between the protruding portion and the cover, The cover is a curtain wall unit having guide rails for guiding the gondola.

2. In the curtain wall unit described in claim 1, The guide rail is a curtain wall unit formed on the cover located on one side of the protruding portion in the left-right direction.

3. In the curtain wall unit described in claim 1 or 2, The vertical frame comprises a vertical frame body that forms the opening and an overhanging member attached to the vertical frame body. The vertical frame body has a protruding portion that extends to a position on the outdoor side of the panel body, The aforementioned overhanging member is attached to the aforementioned projection and extends outward from the aforementioned projection. The overhang portion is a curtain wall unit consisting of the protruding portion and the overhanging member.

4. In the curtain wall unit described in claim 1 or 2, The aforementioned vertical frame has a vertical frame body that forms the opening, The vertical frame body has a protruding portion that extends to a position on the outdoor side of the panel body, The aforementioned overhang is the curtain wall unit which is the protruding part.

5. In the curtain wall unit described in claim 1 or 2, The vertical frame comprises a vertical frame body that forms the opening, and an overhanging member attached to the vertical frame body and extending outward from the vertical frame body. The aforementioned overhang is a curtain wall unit which is the overhanging material.

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