Auxiliary Unit

Abstract

To provide an ancillary unit comprising an ancillary member having a wider change range of an angle in an attached state.SOLUTION: An ancillary unit includes: an ancillary member which has a front face portion and a rear face portion that is connected to both ends in a width direction of the front face portion perpendicular to a predetermined direction to form a hollow portion together with the front face portion and that has contours of an inner face and an outer face with circular arc-shape around a shaft along the predetermined direction, and whose cross section in a perpendicular direction perpendicular to both the predetermined direction and the width direction has a line symmetry shape with a line connecting the center in the width direction and the center of the arc as a shaft; an intervening member which has a first circular arc portion along the circular arc of the outer face of the rear face portion and interposed between the outer face and a member on a building side in a state where the first circular arc portion is in contact with the outer face; and an inside member which has a second circular arc portion along the arc of the inner face and disposed within the hollow portion. The ancillary member is held between the intervening member and the inside member to be fixed to a member on the building side.SELECTED DRAWING: Figure 5

Description

[Technical Field]

[0001] The present invention relates to an accessory unit that is attached to a building. [Background technology]

[0002] Conventionally, decorative elements that can be aligned vertically on the exterior wall of a building and attached at successively different mounting angles are known as accessory units to be attached to buildings (see, for example, Patent Document 1). This decorative element has an arc-shaped mounting piece integrally attached to the indoor end of a long horizontal board, which abuts against an arc-shaped outdoor board attached to the exterior wall via a cushioning material and is attached to the outdoor board with screws. The angle of the horizontal board can be changed by varying the opposing positions of the mounting piece and the outdoor board. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 11-310980 Summary of the Invention [Problem to be solved by the invention]

[0004] The conventional decorative material has an arc-shaped mounting piece integrally attached to the indoor end of the horizontal board, and the horizontal board extends away from the end of the mounting piece, so even if the opposing position of the mounting piece and the outdoor board is changed to change the angle of the horizontal board, the horizontal board comes into contact with the exterior wall. As a result, the range in which the angle of the horizontal board can be changed is narrow, and it is not possible to set the desired angle from the elevation angle to the depression angle.

[0005] The present invention has been made in consideration of such problems, and its object is to provide an accessory unit equipped with accessory members whose angle when attached can be changed over a wider range. [Means for solving the problem]

[0006] In order to achieve this object, the accessory unit of the present invention is an accessory unit to be attached to a building, and has a front portion extending in a predetermined direction, and a back portion that is connected to both ends of the front portion in a width direction perpendicular to the predetermined direction to form a hollow portion together with the front portion, and the contours of the inner and outer surfaces are in the shape of an arc centered on an axis along the predetermined direction, and an accessory member whose cross section in an orthogonal direction perpendicular to both the predetermined direction and the width direction is shaped as an axis that connects the center in the width direction to the center of the arc, an intervening member having a first arc portion along the arc on the outer surface of the back portion, the first arc portion abutting the outer surface and being interposed between the component on the building side, and an inner member having a second arc portion along the arc on the inner surface and being arranged in the hollow portion, and the accessory member is sandwiched between the intervening member and the inner member and fixed to the component on the building side. Other features of the present invention will become apparent from the description of this specification and the accompanying drawings. [Effects of the Invention]

[0007] According to the present invention, it is possible to provide an accessory unit having an accessory member with a wider range of changeable mounting angles. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is a cross-sectional view showing a building equipped with an accessory unit according to this embodiment. [Figure 2] 1 is a vertical cross-sectional view showing a building equipped with an accessory unit according to this embodiment. [Figure 3] FIG. 2 is an enlarged view of part A in FIG. [Figure 4] FIG. 2 is an exploded perspective view showing the attachment structure of the accessory unit. [Figure 5] FIG. 10 is a side view showing the accessory unit attached to the vertical frame. [Figure 6] FIG. 2 is a diagram showing the configuration of an accessory unit. [Figure 7] FIG. 7(a) is a diagram showing a state in which the front portion of the blade faces upward, and FIG. 7(b) is a diagram showing a state in which the front portion of the blade faces downward. DETAILED DESCRIPTION OF THE INVENTION

[0009] Hereinafter, a frame according to one embodiment of the present invention will be described with reference to the drawings.

[0010] In this embodiment, as an accessory unit to be attached to a building, an accessory unit to be attached to a building having an exterior wall made of a curtain wall will be described using an example of a louver that is composed of a number of accessory units each having an accessory member, each of which is arranged in approximately parallel rows.

[0011] As shown in Figure 1, the curtain wall 3 that forms the exterior wall of the building 2 to which the accessory unit 1 is attached is installed side by side and combined to form a continuous window. The curtain wall 3 includes a panel body 3a and a frame body 30 that surrounds the panel body 3a.

[0012] In the following explanation, when the building to which the accessory unit 1 is attached is viewed from the outside, the up-down direction is referred to as the up-down direction, the left-right direction is referred to as the left-right direction, and the depth direction, which is the indoor-outdoor direction, is referred to as the prospective direction. Even for each part of the accessory unit 1, or for each component that makes up the accessory unit 1, even when it is in a standalone state, the directions will be specified and explained as the up-down direction, left-right direction, and prospective direction when the accessory unit 1 is attached to the building. Furthermore, for each curtain wall 3, the inside surrounded by the frame 30 will be explained as the inner periphery side, and the outside as the outer periphery side.

[0013] 1 and 2, the frame body 30 is a rectangular framework made up of horizontal frames 31 arranged above and below and vertical frames 32 arranged on the left and right. The horizontal frames 31 and vertical frames 32 are manufactured by extrusion molding, and the left and right vertical frames 32 are made of the same material and are arranged in a mirror image of each other.

[0014] 3, the vertical frame 32 has a projection wall portion 32a extending along the projection direction, and two ridge engagement portions 32b that protrude toward the inner periphery of the frame body 30 on the outdoor side of the projection wall portion 32a and engage with the ridges 33. The peripheral edge of the panel body 3a is positioned between the ridges 33 that are respectively engaged with the two ridge engagement portions 32b, and the panel body 3a is held in place by a gasket 34 and a sealant 35. The projection wall portion 32a has extension pieces 32c that each extend toward the outer periphery at the locations where the two ridge engagement portions 32b protrude toward the inner periphery.

[0015] On the indoor side of the two ledge engagement portions 32b, a watertight material mounting portion 32d to which a watertight material 36 is attached and an airtight material mounting portion 32e to which an airtight material 37 is attached are provided, protruding toward the vertical frame 32 of the adjacent curtain wall 3. The watertight material mounting portion 32d is provided on the indoor side of the indoor-side extension piece 32c with a gap therebetween, and the airtight material mounting portion 32e is provided on the indoor side of the watertight material mounting portion 32d with a gap therebetween.

[0016] The indoor extension piece 32c and the watertight material mounting portion 32d have protruding pieces 32f that protrude on opposite sides, and an attachment member 4 for fixing the accessory unit 1 to the frame body 30 is attached in a state where it clamps the protruding piece 32f together with a clamping plate 5.

[0017] As shown in Figures 3 and 4, the mounting member 4 has a plate-shaped main body 4a arranged along the projection direction, a frame-side fixing portion 4b provided at the indoor-side end of the main body 4a, and a unit-side fixing portion 4c to which the accessory unit 1 is fixed. The plate-shaped main body 4a is arranged to form a vertical plane, and is attached so that its front and back surfaces face the vertical frames 32 of each of the adjacent curtain walls 3. The surface of the main body 4a facing the vertical frames 32 to which it is attached abuts against the tips of two extension pieces 32c of the vertical frames 32 and is arranged along the projection direction. When the mounting member 4 is fixed to the vertical frames 32, the unit-side fixing portion 4c protrudes outdoors beyond the curtain wall 3.

[0018] The frame-side fixing portion 4b is formed to be thicker than the main body portion 4a and protrudes toward the vertical frame 32 to which it is attached. The portion of the frame-side fixing portion 4b that protrudes toward the vertical frame 32 is inserted between the two extension pieces 32c. The frame-side fixing portion 4b is also provided with through-holes 4d into which screws 6 that advance from the outer periphery of the frame body 30 toward the inner periphery can be inserted.

[0019] The screw 6 inserted into the through hole 4d is screwed into the clamping plate 5, which is disposed on the inner periphery of the two extending pieces 32c so as to span the two extending pieces 32c, thereby clamping the outdoor-side extending piece 32c between the clamping plate 5 and the main body 4a and fixing the mounting member 4 to the vertical frame 32. At this time, the mounting member 4 is attached by clamping the extending piece 32c of the vertical frame 32, which is manufactured by extrusion molding with the vertical direction as the extrusion direction, between the clamping plate 5 and the main body 4a, so that the mounting position of the mounting member 4 in the vertical direction can be freely set.

[0020] The unit-side fixing portion 4c is a plate-shaped portion that protrudes from the outdoor end of the main body 4a toward the inner periphery of the frame 30, and has a facing surface that faces the indoor and outdoor sides. The unit-side fixing portion 4c also has a through-hole 4d (FIG. 6) through which a bolt 7 for fixing the accessory unit 1 passes.

[0021] 4 to 6, the accessory unit 1 has a blade 10 having a hollow portion 10a penetrating in the left-right direction, an interposition member 11 interposed between the blade 10 and the mounting member 4, and an inner member 12 disposed within the hollow portion 10a. In FIG. 6, for the sake of convenience, the inner member 12 is disposed outside the blade 10 in order to clarify the configuration and shape of the inner member 12.

[0022] The slats 10 are long components having a length approximately equal to the width of the curtain wall 3, and are manufactured by extrusion molding. The hollow portion 10a penetrates in the longitudinal direction and is closed by end caps 101 provided at the ends. Both longitudinal ends of the slats 10 are attached by bridging them between mounting members 4 attached to the left and right vertical frames 32.

[0023] The slat 10 has a front portion 10b that forms a plane extending in the longitudinal direction (a predetermined direction) and faces the outdoors, and a back portion 10c that protrudes indoors and has an arc-like shape centered on an axis along the longitudinal direction. The front portion 10b and the back portion 10c are connected at both ends in the width direction of the slat 10, which is perpendicular to the longitudinal direction, and a hollow portion 10a is provided between the front portion 10b and the back portion 10c. That is, in a cross section of the slat 10 taken along a plane along the projection direction, which is perpendicular to both the longitudinal and width directions, the contours of the inner surface 10d and the outer surface 10e of the back portion 10c form an arc-like shape that protrudes indoors and is centered on a point on a horizontal line L that passes through the center of the width direction of the front portion 10b in Figure 5. Therefore, when the blade 10 is positioned so that the front portion 10b forms a vertical plane, the cross-sectional external shape of the blade 10 is symmetrical with respect to a horizontal line L passing through the center of the width of the front portion 10b.

[0024] The rear surface 10c is provided with serrated peaks 10f, which are alternating peaks and valleys that protrude outward and are recessed in a circular arc along the outer surface 10e, over almost the entire outer surface 10e. Furthermore, ribs 10g are provided within the hollow portion 10a to connect the front surface 10b and the rear surface 10c. The arrangement of the ribs 10g will be described later.

[0025] The intervening member 11 is a block-shaped aluminum member manufactured by extrusion. The vertical width of the intervening member 11 is formed slightly larger than the vertical width of the unit-side fixing portion 4c of the mounting member 4, which abuts on the indoor side. The indoor side of the intervening member 11 has a mounting member abutting portion 11a that forms a vertical surface with which the outdoor surface of the unit-side fixing portion 4c abuts, and protrusions 11b that protrude indoors are provided above and below the mounting member abutting portion 11a. The spacing between the upper and lower protrusions 11b is formed slightly wider than the vertical width of the unit-side fixing portion 4c, and the protrusions 11b serve as positioning portions when mounting the intervening member 11 to the mounting member 4.

[0026] The outdoor surface 11c of the spacer 11 facing the outdoors forms a first arc portion recessed toward the indoor side, and is the same as the arc formed by the outer surface 10e of the back surface 10c of the slat 10, i.e., forms an arc shape that follows the outer surface 10e of the back surface 10c. The contour of the outdoor surface 11c forms an arc shape with its center on a horizontal line L that passes through the center of the mounting member abutting portion 11a in the vertical direction.

[0027] The outdoor surface 11c is provided with serrated ridges 11d as peak-valley portions, in which outwardly protruding peaks and recessed valleys alternate in a direction along the arc, similar to the back surface 10c. The interposing member 11 is molded with its extrusion direction being along the serrated ridges 11d, i.e., the left-right direction, similar to the extrusion direction of the blades 10.

[0028] When the back surface 10c of the blade 10 is brought into contact with the outdoor surface 11c of the interposition member 11, the blade 10 is positioned relative to the interposition member 11 at a position where the serrated edges 10f, 11d provided on each blade engage with each other.

[0029] Furthermore, by changing the positions at which the serrated edges 10f and 11d provided on each of the members interlock with each other, the angle at which the front surface 10b faces can be changed. The interposing member 11 is also provided with a bolt through-hole 11e through which the bolt 7 passes.

[0030] The inner member 12 has a blade abutment member 13 having an inner surface abutment portion 13a that abuts against the inner surface 10d of the back surface portion 10c of the blade 10, and a bolt screwing member 14 having a bolt screwing hole 14a into which the bolt 7 is screwed. Here, the blade abutment member 13 corresponds to a washer member.

[0031] The blade contact member 13 is a block-shaped member made of aluminum by extrusion molding. In the blade contact member 13, the inner surface contact portion 13a forming the second arc portion protruding toward the indoor side is the same as the arc formed by the inner surface 10d of the back surface 10c of the blade 10, i.e., has an arc shape that follows the inner surface 10d of the back surface 10c.

[0032] The contour of the inner surface abutting portion 13a is an arc centered at a point on a horizontal line L passing through the center in the up-down direction of the blade abutting member 13. The blade abutting member 13 is formed with the extrusion direction being along the longitudinal direction of the blade 10, similar to the extrusion direction of the blade 10. The blade abutting member 13 is also provided with a bolt through-hole 13b through which the bolt 7 passes.

[0033] The bolt screwing member 14 is a plate-shaped steel member, and when placed on top of the outdoor side of the blade abutment member 13, a bolt screwing hole 14a is provided at a position that overlaps with the bolt through hole 13b of the blade abutment member 13.

[0034] To attach the accessory unit 1, for example, the intervening member 11 is placed on the outdoor side of the unit-side fixing portion 4c of the attachment member 4 that is attached in advance to each of the left and right vertical frames 32. At this time, the intervening member 11 is placed so that the protrusions 11b of the intervening member 11 are positioned above and below the unit-side fixing portion 4c, and the attachment member abutting portion 11a of the intervening member 11 abuts against the outdoor surface of the unit-side fixing portion 4c.

[0035] Next, the back surface 10c of the slat 10 is positioned facing the outdoor surface 11c of the interposition member 11. At this time, the serrations 10f of the back surface 10c are aligned with the serrations 11d of the outdoor surface 11c, with the front surface 10b of the slat 10 positioned at a desired angle. Bolt through holes 10h ( FIG. 6 ) are formed in the slat 10 in advance, through which bolts 7 pass that are inserted into the bolt through holes 4e of the mounting member 4 and the bolt through holes 11e of the interposition member 11. It is desirable that the bolt through holes 10h of the slat 10 be elongated in the longitudinal direction of the slat 10, taking into account expansion and contraction of the slat 10 due to heat.

[0036] Next, the blade abutment member 13 and the bolt screwing member 14 are inserted into the hollow portion 10a, the inner surface abutment portion 13a of the blade abutment member 13 is abutted against the inner surface 10d of the back portion 10c of the blade 10, and the bolt screwing member 14 is placed on top of the outdoor side of the blade abutment member 13. Then, the bolt 7 inserted through the mounting member 4, the interposing member 11, and the back portion 10c of the blade 10 is inserted into the bolt through hole 13b of the blade abutment member 13 and screwed into the bolt screwing hole 14a of the bolt screwing member 14 to clamp and fix the blade 10. As shown in FIG. 2, a plurality of such accessory units 1 are provided at appropriate intervals in the longitudinal direction of the vertical frame 32, that is, in the vertical direction, to form a louver.

[0037] In this accessory unit 1, ribs 10g are arranged inside the hollow portion 10a of the slat 10 so as to change the position at which the serrated ridges 10f of the back portion 10c and the serrated ridges 11d of the outdoor surface 11c mesh, thereby allowing for a greater change in the angle at which the front portion 10b faces. Specifically, as shown in Fig. 5, when the front portion 10b of the slat 10 forms a vertical plane and a bolt 7 entering along a line L passing through the center of the front portion 10b and the back portion 10c in the up-down direction is screwed into the bolt screwing member 14 to fix the slat 10, the rib 10g is arranged at a position that does not contact the slat abutment member 13, the bolt screwing member 14, or the bolt 7. In other words, the outer shape of the blade 10 is symmetrical about a line L passing through the center of the front portion 10b and the back portion 10c in the vertical direction, but the rib 10g is not symmetrical about a line L passing through the center of the front portion 10b and the back portion 10c in the vertical direction.

[0038] By providing the rib 10g at an asymmetrical position, the arc-shaped back surface portion 10c is divided into a long side and a short side by the rib 10g. The angle of the blade 10 can be continuously changed from a state in which the long side of the back surface portion 10c is located at the top and the front surface portion 10b of the blade 10 forms a vertical plane, i.e., a state in which the bolt 7 is located at the center of the arc formed by the back surface portion 10c as shown in FIG. 5, to a state in which the blade contact member 13 and the bolt screw member 14 are located at one end of the long side of the arc, here the upper end, as shown in FIG. 7(a). That is, the blade 10 can be changed from a position in which the front surface portion 10b forms a vertical plane to an elevation angle in which the front surface portion 10b faces upward. However, in this state, the rib 10g prevents the blade 10b from being changed to a depression angle in which the front surface portion 10b faces downward.

[0039] Therefore, by placing the blade 10 upside down and placing the longer side of the back surface 10c on the bottom, the front surface 10b of the blade 10 can be changed from a vertical position to a downward depression angle, as shown in Figure 7(b). In this way, by providing the ribs 10g asymmetrically, the angle at which the front surface 10b of the blade 10 faces can be continuously changed from an elevation angle to a depression angle.

[0040] According to the accessory unit 1 of this embodiment, the slat 10 is clamped between the outdoor surface 11c of the interposing member 11 and the inner abutment portion 13a of the slat abutment member 13 and fixed to the mounting member 4 on the building side. Therefore, even if the back portion 10c is arc-shaped, the back portion 10c can be positioned on the building side and the front portion 10b can be facing the outdoor side, so that the slat 10 can be installed on the building in a stable state.

[0041] Furthermore, the outdoor surface 11c of the interposing member 11 follows the arc of the outer surface 10e of the back portion 10c, and the inner surface abutment portion 13a of the blade abutment member 13 follows the arc of the inner surface 10d of the back portion 10c, so that the blade 10 can be held between the outdoor surface 11c and the inner surface abutment portion 13a regardless of the position of the back portion 10c.

[0042] In this case, the angle of the front portion 10b changes by changing the position of the blade 10 relative to the mounting member 4 provided on the building side in the direction along the arc, so that the angle of the front portion 10b can be easily changed simply by changing the fixed position of the blade 10 relative to the blade abutment member 13.

[0043] Furthermore, since the cross section of the slat 10 has a shape that is symmetrical about a line L that connects the center of the width direction of the front portion 10b and the center of the arc, if the front portion 10b is set to face forward in a vertical plane when the center of the arc is sandwiched between the outdoor surface 11c and the inner surface abutment portion 13a, it is possible to orient the front portion 10b at either an elevation or depression angle simply by changing the attachment position of the slat 10. This makes it possible to provide an accessory unit 1 that includes the slat 10 with a wider range of changes in the angle when the slat 10 is attached.

[0044] Furthermore, a louver can be constructed by arranging multiple such accessory units 1 approximately parallel to each other with a gap between them. Furthermore, a louver in which the accessory units 1 are arranged can easily have the same or different angles on the front surface 10b of each slat 10. Even when the angles are different, the same components can be used, which allows for cost reduction.

[0045] Furthermore, the front portion 10b and the back portion 10c of the blade 10 form a hollow portion 10a. The front portion 10b and the back portion 10c are connected by a rib 10g, which allows for high rigidity. The rib 10g is located so that it does not come into contact with the inner member 12 when the inner member 12 is positioned in the range from the center of the arc to one end in the width direction. Therefore, the inner member 12 can be positioned in the range from the center of the arc to one end in the width direction, and the blade 10 can be attached to change the angle at which the front portion 10b faces. Furthermore, because the cross-sectional shape of the blade 10 is line-symmetrical, the blade 10 can be inverted so that the rib 10g is positioned on the opposite side of the inner member 12. The inner member 12 can then be positioned in the range from the center of the arc to the other end in the width direction, and the blade 10 can be attached to change the angle at which the front portion 10b faces. This allows the blade 10 to be oriented over a wider angular range while still increasing its rigidity.

[0046] In addition, the serrated edges 10f, 11d on the outer surface 10e of the back surface 10c and the outdoor surface 11c can be interlocked to adjust the angle to a desired value. In addition, because the serrated edges 10f, 11d are interlocked with each other, it is possible to prevent the blades 10 from shifting.

[0047] Furthermore, since the blade contact member 13 having the inner surface contact portion 13a and the bolt screwing member 14 onto which the bolt 7 is screwed are separate members, the bolt screwing member 14 can be manufactured from a material that can withstand the screwing of the bolt, such as steel, and the blade contact member 13 can be manufactured from a material that allows the inner surface contact portion 13a, which has a protruding curved surface, to be easily machined, such as aluminum. This makes it possible to provide an accessory unit 1 that has high precision in the inner surface contact portion 13a and is easy to manufacture, and that can more firmly attach the blade 10.

[0048] In the above embodiment, an example has been described in which the outer surface 10e of the back portion 10c of the slat 10 is arc-shaped and protrudes indoors, the outdoor surface 11a of the interposing member 11 is arc-shaped and recessed indoors, and the inner surface abutting portion 13a of the slat abutting member 13 is arc-shaped and protrudes indoors, but the present invention is not limited to this. For example, it is also acceptable that the outer surface 10e of the back portion 10c of the slat 10 is arc-shaped and protrudes outdoor, the outdoor surface 11a of the interposing member 11 is arc-shaped and protrudes outdoor, and the inner surface abutting portion 13a of the slat abutting member 13 is arc-shaped and recessed outdoor.

[0049] In the above embodiment, an example has been described in which the serrated peaks 10f, 11d are provided on the outer surface 10e of the back portion 10c of the blade 10 and on the outdoor surface 11c of the interposition member 11, but the serrated peaks may also be provided on the inner surface 10d of the back portion 10c of the blade 10 and on the inner surface abutting portion 13a of the blade abutting member 13. Furthermore, the serrated peaks 10f, 11d do not have to be acute-angled mountain shapes, and may be in a form in which peaks and valleys are provided continuously so as to interlock with each other.

[0050] In the above embodiment, an example was described in which the inner member 12 is composed of a blade abutment member 13 and a bolt screw-on member 14, but the blade abutment member 13 and the bolt screw-on member 14 may also be integrated into a single member. In the above embodiment, an example has been described in which the front surface 10b of the blade 10 is flat, but the present invention is not limited to this.

[0051] In the above embodiment, an example has been described in which both longitudinal ends of the slat 10 are hung across and attached to the mounting members 4 attached to the left and right vertical frames 32, but the present invention is not limited to this. For example, both longitudinal ends of the slat 10 may be supported and attached by the mounting members 4 attached to the upper and lower horizontal frames.

[0052] Furthermore, the above-described embodiments are provided to facilitate understanding of the present invention and are not intended to limit the present invention. The present invention may be modified or improved without departing from the spirit thereof, and the present invention naturally includes equivalents thereof.

[0053] The present embodiment includes at least the following inventions. an accessory unit to be attached to a building, the accessory unit having a front portion extending in a predetermined direction, and a back portion that is connected to both ends of the front portion in a width direction perpendicular to the predetermined direction to form a hollow portion together with the front portion, the contours of the inner and outer surfaces of which form an arc shape centered on an axis along the predetermined direction, and an accessory member whose cross section in an orthogonal direction perpendicular to both the predetermined direction and the width direction forms an axisymmetric shape with the line connecting the center in the width direction to the center of the arc as the axis; an intervening member having a first arc portion that follows the arc on the outer surface of the back portion, the first arc portion abutting the outer surface and being interposed between the component on the building side; and an inner member that has a second arc portion that follows the arc on the inner surface and is placed in the hollow portion, the accessory unit being characterized in that the accessory member is sandwiched between the intervening member and the inner member and fixed to the component on the building side.

[0054] With this type of accessory unit, the accessory component is sandwiched between the first arc portion of the interposed member and the second arc portion of the inner member and fixed to the building-side component. Therefore, even if the rear surface is arc-shaped, the accessory component can be stably attached to the building with the rear surface facing the building and the front surface facing outward. Furthermore, since the first arc portion of the interposed member follows the arc of the outer surface of the rear surface and the second arc portion of the inner member follows the arc of the inner surface of the rear surface, the accessory component can be held between the first and second arc portions regardless of the position of the rear surface. In this case, the angle of the front surface changes when the position of the accessory component relative to the building-side component is changed along the arc. Therefore, the angle of the front surface can be easily changed simply by changing the attachment position of the accessory component.

[0055] Furthermore, since the cross section of the accessory member has a shape that is symmetrical about a line connecting the center of the width direction of the front portion and the center of the arc, if the front portion is set to face forward when the center of the arc is sandwiched between the first arc portion and the second arc portion, it is possible to orient the front portion at either an elevation or depression angle simply by changing the attachment position of the accessory member. This makes it possible to provide an accessory unit with a wider range of changes to the angle of the front portion when attached.

[0056] Furthermore, a louver can be constructed by arranging multiple accessory units in parallel with a gap between them. The angle of the front of each accessory unit can be easily adjusted to match or differ when forming a louver. Even when the angles are different, the same components can be used, reducing costs.

[0057] Such an accessory unit is characterized in that the accessory member has a rib connecting the front portion and the back portion, and the rib is positioned so as not to come into contact with the inner member when the inner member is positioned in the range from the center of the arc to one end in the width direction.

[0058] According to this accessory unit, the front and rear portions of the accessory member, which form a hollow section, are connected by ribs, thereby providing high rigidity. Furthermore, the ribs are positioned so that they do not come into contact with the inner member when the inner member is positioned in the range from the center of the arc to one end in the width direction. Therefore, the angle at which the front portion faces can be changed by positioning the inner member in the range from the center of the arc to one end in the width direction and attaching the accessory member. Furthermore, because the cross-sectional shape of the accessory member is line-symmetrical, the accessory member can be inverted so that the ribs are positioned on the opposite side of the inner member, and the inner member can be positioned in the range from the center of the arc to the other end in the width direction and attaching the accessory member. This allows the front portion to face a wider range of angles while increasing the rigidity of the accessory member.

[0059] Such an accessory unit is characterized in that the outer surface and the first arc portion of the back portion, or the inner surface and the second arc portion of the back portion, each have a peak-valley portion in which protruding peaks and recessed valleys alternate in a direction along the arc, and each peak-valley portion interlocks with each other.

[0060] With this accessory unit, it is possible to adjust the angle to a predetermined value by engaging the peaks and valleys on the outer surface of the back surface and the first arc portion, or the inner surface of the back surface and the second arc portion. In addition, because the peaks and valleys are engaged with each other, it is possible to prevent the accessory from shifting.

[0061] Such an accessory unit is characterized in that the inner member has a washer member having the second arc portion, and a bolt screwing member into which a bolt is screwed that clamps the accessory member between the intervening member and the inner member and fixes it to a member on the building side.

[0062] With this accessory unit, the washer member having the second arc portion and the bolt screwing member into which the bolt is screwed are separate members, so the bolt screwing member can be manufactured from a member that can withstand screwing of the bolt, and the washer member can be manufactured from a member that is easy to process the second arc portion. This makes it possible to provide an accessory unit that has high precision in the second arc portion and is easy to manufacture, allowing for more secure attachment of accessory members. [Explanation of symbols]

[0063] 1 accessory unit, 2 buildings, 7 bolts, 10 boards (accessories), 10a hollow portion, 10b front portion, 10c rear portion, 10d inner surface of the rear portion, 10e outer surface of rear portion, 10f jagged edge, 10g rib, 11 interposing member, 11c outdoor surface, 11d Giza mountain, 12 inner member, 13 blade contact member, 13a inner surface abutment portion, 14 bolt screw member

Claims

1. An accessory unit to be attached to a building, a front portion extending in a predetermined direction; and a back surface portion that is connected to both ends of the front surface portion in a width direction perpendicular to the predetermined direction to form a hollow portion together with the front surface portion, and whose inner and outer surface contours form an arc shape centered on an axis along the predetermined direction, an accessory member whose cross section in a direction perpendicular to both the predetermined direction and the width direction has a shape that is line-symmetrical with respect to a line connecting the center in the width direction and the center of the arc; an interposition member having a first arc portion along the arc of the outer surface of the back surface portion, the first arc portion abutting the outer surface and being interposed between the back surface and the building-side member; an inner member disposed within the hollow portion, the inner member having a second arc portion along the arc of the inner surface; and The accessory unit is characterized in that the accessory member is sandwiched between the interposing member and the inner member and fixed to the building-side member.

2. The accessory unit according to claim 1, the accessory member has a rib connecting the front portion and the rear portion, An accessory unit characterized in that the rib is located in a position that does not contact the inner member when the inner member is positioned in a range from the center of the arc to one end in the width direction.

3. The accessory unit according to claim 1 or 2, An accessory unit characterized in that the outer surface and the first arc portion of the rear portion, or the inner surface and the second arc portion of the rear portion, each have a peak-valley portion in which protruding peaks and recessed valleys alternate in a direction along the arc, and each peak-valley portion interlocks with each other.

4. The accessory unit according to any one of claims 1 to 3, the inner member includes a washer member having the second arc portion; An accessory unit characterized by having a bolt screwing member into which a bolt is screwed that clamps the accessory member between the interposing member and the inner member and fixes it to a component on the building side.

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