Mounting structure

Abstract

To provide a beam structure that allows for easy attachment of a beam cover to the underside of the beam. [Solution] The beam structure 30 comprises a beam 3 having a beam body 31 extending in a predetermined direction and a lower protruding plate 34 protruding outward in the width direction W of the beam body 31 at the lower part of the beam body 31, and a beam cover 35 attached to the lower part of the beam 3, the beam cover 35 having a mating fixing part 352 fixed to the beam body 31 by mating and a screw fixing part 353 fixed to the lower protruding plate 34 with screws, the mating fixing part 352a having a positioning part 352a that restricts the movement of the beam cover 35 toward the lower protruding plate 34 while allowing the beam cover 35 to move toward and away from the beam body 31 to position it, and a mating part 352b that mates with the beam body 31.

Description

Technical Field

[0001] The present disclosure relates to a beam structure, a roof structure including the beam structure, and a construction method of the beam structure.

Background Art

[0002] Conventionally, a beam structure including a beam and having a roof body attached to the lower surface of the beam is known (see Patent Document 1). In the beam structure described in Patent Document 1, in order to attach a member such as a roof body to the lower surface of the beam, fins (lower protruding plates) protruding outward in the width direction of the beam body are provided at the lower part of the beam body. When the roof body is attached to the lower surface of the beam, it is fixed to the fin of the beam.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the conventional beam structure, in the longitudinal direction of the lower surface of the beam, a member such as a roof body may be attached to a part, and a member such as a roof body may not be attached to other parts. In this case, in the part where a member such as a roof body is not attached on the lower surface of the beam, the lower surface of the beam together with the fin is exposed downward. In such a case, from the viewpoint of design, it is preferable to attach a beam cover to the lower surface of the beam to hide the fin from the lower side of the beam. When attaching the beam cover to the lower surface of the beam, it is desired that the beam cover can be easily attached to the lower surface of the beam.

[0005] An object of the present disclosure is to provide a beam structure that can easily attach a beam cover to the lower surface of the beam.

Means for Solving the Problems

[0006] This disclosure relates to a beam structure comprising: a beam body extending in a predetermined direction; a lower projection plate protruding outward in the width direction of the beam body at the lower part of the beam body; and a beam cover attached to the lower part of the beam, wherein the beam cover has a mating fixing portion fixed to the beam body by mating, and a screw fixing portion fixed to the lower projection plate with screws, and the mating fixing portion has a positioning portion that restricts the movement of the beam cover toward the lower projection plate while allowing the beam cover to move toward and away from the beam body, and a mating portion that mats with the beam body. [Brief explanation of the drawing]

[0007] [Figure 1] This is a perspective view of a carport according to one embodiment, seen from an oblique upward angle. [Figure 2] This is a perspective view of a carport according to one embodiment, seen from a diagonally downward angle. [Figure 3] This is a plan view of a carport according to one embodiment. [Figure 4] This is a cross-sectional view along line AA in Figure 3. [Figure 5] This is a perspective view from diagonally above, showing a beam with a beam cover attached. [Figure 6] This is a perspective view from a diagonal downward angle, showing the beam with the beam cover attached. [Figure 7] Figure 5 is a cross-sectional view along line BB. [Figure 8A] This diagram shows the procedure for attaching a beam cover to a beam, specifically the state in which the screw fixing part of the beam cover is hooked onto the lower protruding plate of the beam. [Figure 8B] This diagram shows the procedure for attaching a beam cover to a beam, and illustrates the state in which the positioning part restricts the movement of the beam cover toward the lower protruding plate side to position it. [Figure 8C] This diagram shows the procedure for attaching a beam cover to a beam, specifically the state in which the mating portion of the beam cover is mated to the beam-side mating portion of the beam body. [Figure 8D]This diagram shows the procedure for attaching a beam cover to a beam, and illustrates the state in which the screw fixing part is positioned on the upper surface of the lower protruding plate of the beam while rotating the beam cover 35 around the mating part of the beam body and the beam-side mating part of the beam body. [Modes for carrying out the invention]

[0008] Hereinafter, an embodiment of the roof structure including the beam structure of this disclosure will be described with reference to the drawings. In this embodiment, an example in which the roof structure is applied to a carport 1 will be described. The carport 1 has a parking space for one or more cars below the roof body 4. In this embodiment, an example in which the roof structure is applied to a carport 1 will be described, but it is not limited to this. Furthermore, the roof structure may also be applied to structures other than carports, such as bicycle parking areas, shelters, rest areas, terraces, bus stops, and so on.

[0009] In this description of the embodiment, the direction in which the beam 3 of the carport 1 extends, and which is perpendicular to the direction in which the elongated profile (elongated material) 41 extends, is also referred to as the left-right direction X (the direction intersecting the longitudinal direction of the elongated profile 41). Furthermore, in the left-right direction X in which the beam 3 extends, one side (the front left in Figure 1) is also referred to as the X1 side, and the other side (the rear right in Figure 1) is also referred to as the X2 side. The direction in which the multiple elongated profiles (elongated materials) 41 constituting the roof body 4 of the carport 1 extend is also referred to as the front-back direction Y (the longitudinal direction of the elongated profile 41). Furthermore, in the front-back direction Y in Figure 1, the front right side of the carport 1 is also referred to as the front side, and the rear left side of the carport 1 is also referred to as the rear side.

[0010] First, the overall structure of the carport 1 of this embodiment will be described. As shown in Figures 1 to 3, the carport 1 of this embodiment is a so-called cantilevered carport in which the roof body 4 is supported by a pair of support columns 2 on each side in the left-right direction X. Furthermore, the carport 1 of this embodiment is composed of a suspension structure in which the roof body 4 is suspended and connected to the lower part (below) of the beam 3 connected to the support columns 2. The carport 1 of this embodiment is a so-called beam-extended carport in which the length of the beam 3 is extended from the part in which the roof body 4 is located. In the longitudinal direction of the beam 3, the lower part of the portion that extends from the part in which the roof body 4 is located does not have a roof body 4, and a beam cover 35 is attached thereto.

[0011] As shown in Figures 1 to 3, the carport 1 of this embodiment comprises two pairs of support columns 2 (column members) erected on the ground 11, two beams 3 extending from the upper ends of the support columns 2 in a direction intersecting the support columns 2, and a roof body 4 connected to the lower part of the two beams 3. The multiple elongated profiles 41 constituting the support columns 2, beams 3, and roof body 4 are formed from extruded profiles of aluminum material and have a hollow structure with a hollow cross-section.

[0012] As shown in Figure 1, the two pairs of support columns 2 (column members) are arranged side by side in the front-to-back direction Y. As shown in Figure 3, the pairs of support columns 2 are positioned opposite each other on both sides (X1 side and X2 side) of the carport 1 in the left-to-right direction X, with the roof body 4 in between, and are connected to both ends of the beam 3 in the left-to-right direction X.

[0013] As shown in Figure 1, two pairs of support columns 2 are spaced apart in the front-to-back direction Y of the carport 1. The support columns 2 are formed to extend in the vertical direction. As shown in Figure 4, the support columns 2 have a hollow support column side hollow portion 21 with a rectangular tubular cross-section, and a pair of cover mounting walls 22 (see Figure 1) that protrude from the side of the support column side hollow portion 21 on the roof body 4 side and extend in the vertical direction. Support column cover members 23 are attached to the pair of cover mounting walls 22. A support column cap 24 is positioned at the upper end of the support column 2 so as to cover the opening at the upper end of the support column 2.

[0014] As shown in FIG. 4, water discharged from a roof body side gutter component 40 (described later) of the roof body 4 flows between the support column 2 disposed on the X2 side and the support column cover member 23. Since water discharged from the roof body side gutter component 40 (described later) of the roof body 4 flows in and water flows between the support column 2 disposed on the X2 side and the support column cover member 23, the support column 2 and the support column cover member 23 are configured as a support column side gutter component 20 (column material side gutter structure). In the present embodiment, a hose for a rain gutter or the like is not disposed between the support column 2 disposed on the X2 side and the support column cover member 23, and only the support column 2 and the support column cover member 23 constitute a vertical gutter. Since the side surface of the support column side hollow portion 21 on the roof body 4 side of the support column side gutter component 20 is covered with the support column cover member 23, it is not visible from the outside of the carport 1. Therefore, it is not visible from the outside that the support column 2 has the function of a gutter, and the design property can be improved.

[0015] As shown in FIG. 1, the two beams 3 are arranged spaced apart in the front-rear direction Y of the carport 1. The two beams 3 respectively connect the upper end portions of the pair of support columns 2 to extend in the left-right direction X of the roof body 4. As shown in FIG. 4, both of the two beams 3 are formed with a downward slope in which the support column 2 side on the X2 side is lower in the left-right direction X. Both end portions (the end portion on the X1 side and the end portion on the X2 side) of the two beams 3 in the left-right direction X are connected to the upper end portion of the support column 2 via an L-shaped connecting member 25 as shown in FIG. 4. The roof body 4 is connected to the lower portion of the pair of beams 3.

[0016] As shown in FIGS. 1, 3, and 5, each of the two beams 3 has a beam main body 31 having a hollow portion with a square tube-shaped cross section and a lower protruding plate 34.

[0017] As shown in FIGS. 3 and 4, the lower protruding plate 34 protrudes from the lower end of the beam-side hollow portion 32 toward one side (one side in the width direction of the beam 3) on the central side in the front-rear direction Y of the roof body 4 (on the side of the other beam 3 among the pair of beams 3), and is formed in a plate shape extending in the left-right direction X. The lower protruding plate 34 is fixed to the roof body 4 at the lower protruding plate 34 by a plurality of screw members 101 arranged side by side in the front-rear direction Y. In the present embodiment, the lower protruding plate 34 is configured to protrude only on one side (one side only) in the width direction of the beam 3 at the lower end of the beam 3, but is not limited thereto. The lower protruding plate 34 may be configured to protrude on both sides in the width direction of the beam 3 at the lower end of the beam 3.

[0018] As shown in FIG. 1, the roof body 4 has a hanging structure in which the roof body 4 is hung and arranged below two beams 3, and is attached (connected) to the lower parts of the two beams 3. The roof body 4 is arranged in most of the X2 side in the left-right direction X in which the two beams 3 extend, and is not arranged in the remaining X1 side portion. In the present embodiment, the two beams 3 extend to the X1 side in the left-right direction X with respect to the roof body 4. A beam cover 35 is attached to the lower part of the beam 3 on the X2 side where the roof body 4 is not arranged at the lower part of the beam 3. Details of the beam structure 30 to which the beam cover 35 is attached to the lower part of the beam 3 will be described later.

[0019] As shown in FIG. 4, the roof body 4 is configured by connecting a plurality of long members (long members) 41 in series side by side in the direction in which the beam 3 extends and fitting and connecting them to each other. The plurality of long members 41 each extend in the front-rear direction Y of the carport 1 (the direction orthogonal to the direction in which the beam 3 extends) and have a predetermined thickness. The plurality of long members 41 are each formed of an extruded profile of an aluminum material and have a hollow structure having a hollow portion formed in a hollow shape in cross section. The roof body 4 has an upper surface 4a and a lower surface 4b formed flat (planar).

[0020] The roof structure 4 is positioned on a downward slope, with the support column 2 on the X1 side descending. The upper surface 4a and lower surface 4b are formed on a downward slope, with the support column 2 on the X2 side descending in the left-right direction X (the direction in which the beam 3 extends) of the carport 1. The roof structure 4 is constructed by connecting multiple long profiles 41 made of extruded aluminum material. This allows multiple long profiles 41 to be used as surface materials for the roof structure 4, while also ensuring the strength of the roof structure 4. Furthermore, by constructing the multiple long profiles 41 constituting the roof structure 4 from profiles with hollow sections, the roof structure 4 itself can be used as a structural member, eliminating the need for separate members to provide strength to the roof structure 4. Therefore, the number of parts constituting the roof structure 4 can be reduced.

[0021] As shown in Figure 4, the multiple elongated profiles 41 that make up the roof body 4 are composed of an X1-side end profile 42 positioned furthest towards X1 in the left-right direction X, a gutter-forming profile 44 positioned furthest towards X2, and a plurality of intermediate profiles 43 positioned between the X1-side end profile 42 and the gutter-forming profile 44.

[0022] Multiple long profiles 41 are attached to adjacent long profiles 41 by interlocking, and each of the multiple long profiles 41 is directly fixed and connected to the beam 3 by screw members 101. Specifically, the lower protruding plate 34 of the beam 3 and the upper surface of the long profiles 41 (X1 side end profile 42, intermediate profile 43) are fixed by screw members 101 moved from above.

[0023] As shown in Figure 4, the gutter structural members 44 are arranged in parallel at the X2 side end of the left-right direction X where multiple elongated structural members 41 are lined up in the roof body 4, and are formed from elongated structural members whose upper side opens upward. In this embodiment, the gutter structural members 44 are formed from a solid material that does not have a hollow section and are formed in a U-shaped cross-section with an opening at the upper side.

[0024] The gutter component 44 forms a roof-side gutter component 40 at the X2 side end of the roof body 4 in the left-right direction X, receiving and circulating water that flows from the X1 side to the X2 side on the upper surface 4a of the roof body 4 and reaches the X1 side end. The roof-side gutter component 40 is formed extending in the longitudinal direction of the long component 41. As shown in Figure 4, the roof-side gutter component 40 is connected to the column-side gutter component 20 (column-side gutter structure) between the column 2 and the column cover member 23 on the X2 side via a guide member 26 midway along the longitudinal direction of the long component 41. The guide member 26 guides the water that flows into the roof-side gutter component 40 and remains there to the column-side gutter component 20.

[0025] Since the upper side of the roof-side gutter component 40 is open, when the roof-side gutter component 40 is viewed from below the roof 4, only the flat (planar) underside of the long profile 41 is visible, and the gutter can be constructed without making it apparent that a gutter exists on the upper surface 4a of the roof 4, thereby improving the aesthetic appearance.

[0026] Next, the details of the beam structure 30, in which a beam cover 35 is attached to the lower part of the beam 3, will be described. In this embodiment, in describing the beam structure 30, as shown in Figures 5 to 7, the width direction perpendicular to the longitudinal direction of the beam 3 is called the width direction W. One side in the width direction W is called one side W1 (left side in Figure 7), and the other side in the width direction W is called the other side W2 (right side in Figure 7). As shown in Figures 5 and 6, the beam structure 30 comprises a beam 3 and a beam cover 35. The beam cover 35 is attached to the lower part of the beam 3 in the longitudinal direction where the roof body 4 is not located.

[0027] As shown in Figures 5 to 7, the beam 3 has a long beam body 31 extending in a predetermined direction, and a lower projection plate 34 that protrudes outward from the other side W2 in the width direction W of the beam body 31 at the lower part of the beam body 31.

[0028] As shown in Figure 7, the beam body 31 has a beam-side hollow portion 32 (beam component) with a rectangular tubular cross-section, a beam attachment portion 33 (attachment portion) fixed to the lower surface of the beam-side hollow portion 32, and two end caps 37 (see Figures 5 and 6) positioned at both ends in the longitudinal direction of the beam-side hollow portion 32. The beam-side hollow portion 32 has a hollow frame 321 with a hollow section and a positioning projection 322 (beam-side positioning portion). The positioning projection 322 protrudes downward from the end portion of one side W1 in the width direction W of the hollow frame 321.

[0029] The beam attachment portion 33 extends in the longitudinal direction of the beam-side hollow portion 32. The beam attachment portion 33 may be composed of a single member extending in the longitudinal direction of the beam-side hollow portion 32, or it may be composed of multiple piece-shaped attachment members formed to have a predetermined length in the longitudinal direction of the beam-side hollow portion 32.

[0030] As shown in Figure 7, the beam attachment portion 33 includes a fixing plate 331 formed in the width direction W and fixed to the lower surface of the beam-side hollow portion 32 by screws 331a, a downward extension plate 332 extending downward from one end W1 in the width direction W of the fixing plate 331, a beam-side mating portion 333 (matting portion) provided at the tip (lower end) of the downward extension plate 332, and an L-shaped projection 334 that protrudes from the upper part of the downward extension plate 332 in the vertical direction toward one side W1 in the width direction W and opens downward. The beam-side mating portion 333 is mated to the mating portion 352b (described later) of the mating fixing portion 352 of the beam cover 35. The surface W1 on one side in the width direction W of the protruding piece that projects downward from the tip of the L-shaped projection 334 abuts against the surface W2 on the other side in the width direction W of the positioning projection 322 of the beam body 31.

[0031] As shown in Figures 5 and 6, the beam cover 35 is formed to be elongated along the longitudinal direction of the beam 3. The beam cover 35 is made of an extruded aluminum profile. The beam cover 35 is formed with an open top and a flat bottom surface 35a. Wiring for lighting fixtures and the like installed on the roof 4 can also be passed through the inside of the beam cover 35.

[0032] The lower surface 35a of the beam cover 35 and the lower surface 4b of the roof body 4 are positioned on the same plane or approximately on the same plane. This improves the appearance of the roof body 4 when viewed from below, thereby enhancing its design. Note that "approximately on the same plane" does not mean that they are not perfectly on the same plane; they may be slightly offset as long as the planes appear continuous and the design is enhanced.

[0033] As shown in Figure 7, the beam cover 35 has a U-shaped cover body 351 with an open top, a mating fixing portion 352 formed on one side W1 in the width direction W of the cover body 36, a screw fixing portion 353 formed on the other side W2 in the width direction W of the cover body 36, and a partition projection piece 354 and a mating projection piece 355 that project upward from the bottom surface of the cover body 351.

[0034] The cover body 351 includes a bottom plate portion 351a, a one-sided wall portion 351b extending upward from one end W1 in the width direction W of the bottom plate portion 351a, and a other-sided wall portion 351c extending upward from the other end W2 in the width direction W of the bottom plate portion 351a.

[0035] The partition projection piece 354 protrudes upward from the part of the bottom plate portion 351a of the cover body 351 that is on the other side W2 in the middle of the width direction W. The interlocking projection piece 355 protrudes upward from the part of the bottom plate portion 351a of the cover body 351 that is on the one side W1 in the middle of the width direction W. The interlocking portion 352b of the interlocking fixing portion 352, which will be described later, is formed at the upper end of the interlocking projection piece 355.

[0036] By providing the partition projection 354, even if water enters the beam cover 35 from above on the other side W2 in the width direction W of the beam cover 35, it is possible to prevent water from entering the space S between the partition projection 354 and the interlocking projection 355 on the bottom plate portion 351a of the cover body 351. The space S between the partition projection 354 and the interlocking projection 355 on the upper side of the bottom plate portion 351a of the cover body 351 is, for example, provided in this embodiment for arranging a lighting unit (not shown). When providing a space S for arranging a lighting unit, etc., the partition projection 354 can suppress water from entering the space S.

[0037] The interlocking fixing portion 352 is formed on one side W1 in the width direction W of the cover body 36 and is fixed to the beam body 31 by interlocking. The interlocking fixing portion 352 has a positioning portion 352a and an interlocking portion 352b.

[0038] The positioning portion 352a is composed of a straight portion extending vertically at the tip end of one side wall portion 351b of the cover body 351. The positioning portion 352a is positioned along the outer surface of one side W1 in the width direction W of the positioning projection 322 of the cover body 36. The positioning portion 352a positions the beam cover 35 by restricting its movement toward the lower protruding plate 34 side (screw fixing portion 353 side) while allowing the beam cover 35 to move toward and away from the beam body 31.

[0039] The mating portion 352b is formed at the upper end of a mating projection 355 that protrudes upward from one side W1 of the bottom plate portion 351a of the cover body 351 in the width direction W. The mating portion 352b is mated to the beam-side mating portion 333 of the beam body 31. The vertical position in which the mating portion 352b and the beam-side mating portion 333 of the beam body 31 are mated is set such that when the beam cover 35 is attached to the beam body 31, the screw fixing portion 353 is positioned on the upper surface of the lower projection plate 34.

[0040] The screw fixing portion 353 is formed as a plate that protrudes from a position slightly below the tip of the other side wall portion 351c of the cover body 351 to one side W1 in the width direction W. The screw fixing portion 353 is positioned on the upper surface of the lower protruding plate 34 and is screw-fixed to the lower protruding plate 34 from above by screws 353a.

[0041] Next, the procedure for attaching the beam cover 35 to the underside of the beam 3 will be described. First, as shown in Figure 8A, the worker tilts the beam cover 35 so that one side W1 in the width direction W is facing downwards, and hooks the screw fixing part 353 of the beam cover 35 onto the upper side of the lower protruding plate 34 of the beam 3 at the end side (one end) of the other side W2 in the width direction W (hooking step). Since the worker can perform the next steps with the screw fixing part 353 of the beam cover 35 hooked onto the upper side of the lower protruding plate 34 of the beam 3, the work of attaching the beam cover 35 to the underside of the beam 3 can be easily performed.

[0042] Next, the worker rotates the beam cover 35 around the hooked portion on the other side W2 in the width direction W, moving the end portion of the beam cover 35 on one side W1 in the width direction W upward, so that the positioning portion 352a is positioned along the outer surface of the positioning projection 322 of the beam body 31 on one side W1 in the width direction W, as shown in Figure 8B. This positions the beam cover 35 on the end side (other end side) of the beam 3 on one side W1 in the width direction W, while allowing the beam cover 35 to move towards and away from the beam body 31 by the positioning portion 352a of the beam cover 35, thereby restricting the movement of the beam cover 35 toward the lower protruding plate 34 side (screw fixing portion 353 side) (positioning process).

[0043] Then, as shown in Figure 8B, the worker moves one side W1 in the width direction W of the beam cover 35 upward, thereby moving the positioning portion 352a upward along the outer surface of one side W1 in the width direction W of the positioning projection 322 of the cover body 36, and as shown in Figure 8C, the fitting portion 352b of the beam cover 35 fits into the beam side fitting portion 333 of the beam body 31 (fitting process). In this state, the positioning portion 352a of the beam cover 35 is positioned with its movement toward the lower protruding plate 34 side (screw fixing portion 353 side) restricted. However, the positioning portion 352a of the beam cover 35 is allowed to move vertically.

[0044] Next, as shown in Figure 8C, with vertical movement permitted at the positioning portion 352a of the beam cover 35, the worker rotates the beam cover 35 around the mating portion 352b of the beam cover 35 and the beam-side mating portion 333 of the beam body 31, and positions the screw fixing portion 353 on the upper surface of the lower protruding plate 34 of the beam 3, as shown in Figure 8D. Then, the worker moves the screw 353a from the upper side to the lower side of the screw fixing portion 353, and screws the screw fixing portion 353 to the lower protruding plate 34 of the beam 3 with the screw 353a (fixing process). The screw fixing portion 353 is fixed on the upper surface of the lower protruding plate 34 of the beam 3 by the screw 353a that was moved from above. Since the screw 353a is located on the upper side of the beam cover 35, it is not visible from below the carport 1. Therefore, the aesthetic appearance can be improved.

[0045] The beam structure 30 of this embodiment described above provides the following effects. The beam structure 30 of this embodiment comprises a beam 3 having a beam body 31 and a lower protruding plate 34 that protrudes outward in the width direction W of the beam body 31 at the lower part of the beam body 31, and a beam cover 35 attached to the lower part of the beam 3. The beam cover 35 has a mating fixing part 352 that is fixed to the beam body 31 by mating, and a screw fixing part 353 that is screw fixed to the lower protruding plate 34. The mating fixing part 352 has a positioning part 352a that restricts the movement of the beam cover 35 toward the lower protruding plate 34 while allowing the beam cover 35 to move toward and away from the beam body 31, and a mating part 352b that is mated to the beam body 31.

[0046] Therefore, the beam cover 35 is positioned by the positioning portion 352a of the interlocking fixing portion 352, allowing it to move toward and away from the beam body 31. The beam cover 35 is then interlocked with the beam body 31, and the screw fixing portion 353 can be screwed to the lower protruding plate 34. This allows the beam cover 35 to be easily fixed in the correct position on the beam 3. Thus, the beam cover 35 can be easily attached to the lower surface of the beam 3 while improving the aesthetic appearance.

[0047] Furthermore, the positioning portion 352a of the mating fixing portion 352 positions the beam cover 35 while allowing it to move toward and away from the beam body 31, enabling the beam cover 35 to be mated to the beam body 31. Therefore, compared to conventional structures in which the beam cover is attached by pushing it from below by a predetermined pushing length into a mating portion provided on the underside of the beam, the pushing length into the beam cover 35 when attaching the beam cover 35 to the beam 3 can be shortened.

[0048] Conventionally, even when attempting to adopt a beam structure in which, for example, the screw fixing part of the beam cover is positioned by hooking it onto the upper surface of the lower protruding plate of the beam, and then the beam cover is attached to the beam by pushing it from below into the mating part provided on the lower surface of the beam by a predetermined pushing length, in conventional beam structures, if there is an upward pushing length, the screw fixing part will float upward and separate by the amount of the upward pushing length. As a result, the screw fixing part floats upward and separates from the lower protruding plate of the beam, and the screw fixing part cannot be positioned on the upper surface of the lower protruding plate 34 and therefore cannot be fixed.

[0049] In contrast, the present disclosure allows the beam cover 35 to be positioned by the positioning portion 352a of the mating fixing portion 352 in a state where movement toward and toward the beam body 31 is permitted, and the beam cover 35 can be mated to the beam body 31. Compared to the conventional structure in which the beam cover is attached by pushing it from below by a predetermined pushing length into a mating portion provided on the lower surface of the beam, the pushing length into the beam cover 35 when attaching the beam cover 35 to the beam 3 can be shortened. As a result, the screw fixing portion 353 can be positioned and fixed in a position that does not move away from the upper surface of the lower protruding plate 34.

[0050] Furthermore, in this embodiment, the beam body 31 has a beam-side hollow portion 32 and a beam attachment portion 33 fixed to the beam-side hollow portion 32, and the beam attachment portion 33 is provided with a beam-side mating portion 333 that mates into the mating portion 352b of the beam cover 35. This makes it possible to easily attach the beam cover 35 to the lower surface of the beam 3 via the beam attachment portion 33 by fixing the beam attachment portion 33 to the beam body 31 afterwards. Also, for example, when the beam body 31 is manufactured by extrusion molding of aluminum material, it may be difficult for manufacturing reasons to provide a shape on a single beam body 31 that allows the beam cover 35 to mate into and be fixed to the beam body 31. Even in such cases, the beam body 31 can be easily manufactured by composing it with two members: the beam-side hollow portion 32 and the beam attachment portion 33.

[0051] Furthermore, the carport 1 (roof structure) of this embodiment comprises the beam structure 30 and a roof body 4 suspended from the beam 3 below the beam 3. In this configuration, where the roof body 4 is suspended from the beam 3 below the beam 3, the aesthetic appearance can be improved by attaching a beam cover 35 to the portion of the lower surface of the beam 3 where the roof body 4 is not located.

[0052] Furthermore, in this embodiment, the lower surface 4b of the roof body 4 and the lower surface 35a of the beam cover 35 are arranged on the same plane or substantially on the same plane. This improves the appearance of the roof body 4 when viewed from below, thereby enhancing its aesthetic appeal.

[0053] Although a preferred embodiment of the carport (roof structure) of this disclosure has been described above, this disclosure is not limited to the embodiment described above and can be modified as appropriate.

[0054] In the above embodiment, the carport is a so-called double-supported carport in which the roof body 4 is supported by a pair of support columns 2 on each side in the left-right direction X. However, it is not limited to this, and the carport may also be a so-called cantilevered carport in which the roof body 4 is supported by a support column at one end in the left-right direction X.

[0055] In the above embodiment, the beam structure was constructed by connecting the roof body 4 to the beam 3, but it is not limited to this. For example, the beam structure may be constructed with columns and beams without a roof body. In this case, a beam cover may be attached to the entire longitudinal area of ​​the lower surface of the beam, or other mounting members other than the roof body may be attached to a part of the longitudinal area of ​​the lower surface of the beam, and the beam cover may be attached to the part where other mounting members are not attached.

[0056] In the above embodiment, the beam body 31 was composed of two members, a beam component 32 and an attachment component 33, but it is not limited to this. The beam body 31 may also be composed of a single component in which the beam component 32 and the attachment component 33 are integrated.

[0057] In the above embodiment, the vertical depth of one side wall portion 351b and the other side wall portion 351c of the U-shaped cover body 351 in cross-section was set to a depth that allows the illumination unit to be placed, but the embodiment is not limited to this. The vertical depth of one side wall portion 351b and the other side wall portion 351c of the U-shaped cover body 351 in cross-section may be formed to a shorter depth than in the above embodiment. [Explanation of Symbols]

[0058] 1 Carport (roof structure), 3 Beam, 4 Roof body, 30 Beam structure, 31 Beam body, 32 Beam side hollow part (beam component), 33 Beam attachment part (attachment part), 34 Lower protruding plate, 35 Beam cover, 333 Beam side mating part (matting part), 352 Mating fixing part, 352a Positioning part, 352b Mating part, 353 Screw fixing part

Claims

1. A beam having a beam body extending in a predetermined direction, and a lower projection plate that protrudes outward in the width direction of the beam body at the lower part of the beam body, The beam includes a beam cover attached to the lower part of the beam, The beam cover has a mating fixing portion that is fixed to the beam body by mating, and a screw fixing portion that is fixed to the lower protruding plate with screws. The fitting and fixing portion comprises a positioning portion that restricts the movement of the beam cover toward the lower protruding plate while allowing the beam cover to move toward and away from the beam body, and a fitting portion that fits into the beam body, thus forming a beam structure.

2. The beam body comprises a beam component and an attachment component fixed to the beam component. The beam structure according to claim 1, wherein the attachment portion is provided with a mating portion that is mated with the mating portion of the beam cover.

3. A beam structure according to claim 1 or 2, A roof structure comprising a roof body positioned below the beam and suspended from the beam.

4. The roof structure according to claim 3, wherein the lower surface of the roof body and the lower surface of the beam cover are arranged on the same plane or substantially on the same plane.

5. A construction method for a beam structure in which a beam cover is attached to the beam, The beam comprises a beam body extending in a predetermined direction and a lower projection plate at the lower part of the beam body that protrudes outward in the width direction of the beam body. The beam cover is attached to the lower part of the beam and has a mating fixing part that is fixed to the beam body by mating and has a positioning part and a mating part, and a screw fixing part that is screw fixed to the lower protruding plate. At one end of the beam in the width direction, the hooking step involves hooking the screw fixing portion of the beam cover onto the lower protruding plate, Following the hooking step, a positioning step is performed in which, at the other end of the beam in the width direction, the beam cover is positioned by restricting its movement toward the lower protruding plate side while allowing it to move toward and away from the beam body by the positioning portion of the beam cover, After the positioning step, there is a fitting step in which the fitting portion of the beam cover is fitted onto the beam body, A method for constructing a beam structure, comprising a fixing step of screw fixing the screw fixing portion to the lower protruding plate after the fitting step.

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