Roof structure and building

Abstract

To provide a roof frame structure in which a space can be created directly below a roof corner, and a building.SOLUTION: A roof frame structure 10 is a framework of a roof corner 4. The roof corner 4 has a first roof section and a second roof section intersecting the first roof section. The roof frame structure 10 comprises: a first transverse member 21 extending along a lower edge or an upper edge of the first roof section; a second transverse member 22 extending along a lower edge or an upper edge of the second roof section; a first slope member 27 inclined toward the first transverse member 21 and perpendicular to the first transverse member 21 in plan view; a second slope member 28 inclined toward the second transverse member 22 and perpendicular to the second transverse member 22 in plan view; a first connecting member 31 connecting the first transverse member 21 and the first slope member 27; and a second connecting member 32 connecting the second transverse member 22 and the second slope member 28.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present disclosure relates to a roof structure and a building.

Background Art

[0002] A framed structure is known as a roof structure of a building. The framed structure includes a beam, a roof purlin (also called a main roof beam) that supports the roof, and a bundle that stands perpendicular to the beam and supports the roof purlin.

[0003] Regarding the roof structure of a building, for various purposes, several structures have been proposed to replace the conventional framed structure. For example, in the technique described in Patent Document 1, the roof structure is composed of a plurality of frame bodies. Each frame body includes a plurality of main roof beams arranged parallel to each other, a main roof beam receiving beam that receives the plurality of main roof beams, and a bundle that supports the main roof beam receiving beam.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] By the way, in the case of the conventional framed structure or the structure described in Patent Document 1, since bundles are arranged in the space under the roof, it is difficult to provide a through space that extends to the roof. In particular, at the roof corner, it is difficult to provide a space in the space directly below at the roof corner. Therefore, a roof structure that can provide a space directly below at the roof corner is proposed.

Means for Solving the Problems

[0006] (1) The roof frame structure for solving the above problems is a roof frame structure that is the framework at the roof corner. The roof corner has a first roof part and a second roof part that intersects the first roof part. A first horizontal member along the lower end or upper end of the first roof part, a second horizontal member along the lower end or upper end of the second roof part, a first gradient member that inclines toward the first horizontal member and is orthogonal to the first horizontal member in plan view, a second gradient member that inclines toward the second horizontal member and is orthogonal to the second horizontal member in plan view, a first connecting member that connects the first horizontal member and the first gradient member, and a second connecting member that connects the second horizontal member and the second gradient member.

[0007] Here, "orthogonal" includes that two members are arranged such that the axial centers of the two members are orthogonal to each other. The state where "two members are orthogonal" includes the state where one member abuts the other member at a right angle in plan view and the state where two members are connected at a right angle via a column.

[0008] According to this configuration, a truss structure is formed by the first horizontal member, the first gradient member, and the first connecting member. A truss structure is formed by the second horizontal member, the second gradient member, and the second connecting member. With this structure, the roof corner can be supported without assembling a small-framed structure. Therefore, a space with few framed members can be provided directly below the roof corner.

[0009] (2) In the roof frame structure described in (1) above, further provided are a first column that supports the first gradient member, a second column that supports the second gradient member, and a third column that is arranged at the end of the intersection line where the first roof part and the second roof part intersect. The first gradient member is connected to the first column and the third column, and the second gradient member is connected to the second column and the third column.

[0010] According to this configuration, the first gradient member is supported by the first column and the third column. The second gradient member is supported by the second column and the third column. Therefore, a space can be formed under the first gradient member between the first column and the third column. Also, a space can be formed under the second gradient member between the second column and the third column. As a result, the connection portion between the space directly under the first roof portion of the roof corner and the space directly under the roof portion adjacent to the first roof portion can be widened. Also, the connection portion between the space directly under the second roof portion of the roof corner and the space directly under the roof portion adjacent to the second roof portion can be widened.

[0011] (3) In the roof frame structure described in (2) above, a fourth column disposed near a portion where the first horizontal member and the second horizontal member are orthogonal in plan view, a third horizontal member disposed parallel to the first horizontal member, and a fourth horizontal member disposed parallel to the second horizontal member are further provided. The third horizontal member is disposed between the first column and the fourth column and is connected to the first column and the fourth column. The fourth horizontal member is disposed between the second column and the fourth column and is connected to the second column and the fourth column. The second horizontal member is disposed between the second gradient member and the third horizontal member and is connected to the second gradient member and the third horizontal member, or the first horizontal member is disposed between the first gradient member and the fourth horizontal member and is connected to the first gradient member and the fourth horizontal member.

[0012] According to this configuration, the roof corner is configured in a rectangle in plan view. And in plan view, columns are disposed at each vertex of the protruding roof corner. Thus, since the protruding corner is supported by four columns, the protruding corner is stabilized.

[0013] (4) In the roof frame structure described in (2) above, a fourth column disposed at a portion where the first horizontal member and the second horizontal member are orthogonal is further provided. The first horizontal member is disposed between the first column and the fourth column and is connected to the first column and the fourth column. The second horizontal member is disposed between the second column and the fourth column and is connected to the second column and the fourth column.

[0014] According to this configuration, the roof corner is configured in a rectangle in plan view. And in plan view, columns are arranged at each vertex of the protruding roof corner. In this way, since the protruding corner is supported by four columns, the protruding corner is stabilized.

[0015] (5) In the roof frame structure according to any one of (1) to (4) above, further comprising a third connecting member that connects the first horizontal member and the second horizontal member, and a fourth connecting member that connects the first inclined member and the second inclined member.

[0016] According to this configuration, the frame structure composed of the first horizontal member, the second horizontal member, the first inclined member, and the second inclined member can be reinforced by the third connecting member and the fourth connecting member.

[0017] (6) In the roof frame structure according to (5) above, further comprising a third inclined member along an intersection line where the plane along the first roof part and the plane along the second roof part intersect. According to this configuration, a corner beam as a roof base can be placed on the third inclined member. Therefore, the corner beam is stabilized.

[0018] (7) In the roof frame structure according to (6) above, the third inclined member is connected to the third connecting member and the fourth connecting member.

[0019] Since the third inclined member is along the intersection line where the plane along the first roof part and the plane along the second roof part intersect, if there are no third connecting member and fourth connecting member, it is necessary to connect to the intersection part of the first horizontal member and the second horizontal member, and the intersection part of the first inclined member and the second inclined member. However, it is difficult to directly connect the end of the third inclined member to such an intersection part. In this regard, according to the above configuration, one end of the third inclined member can be easily connected to the intersection part of the first horizontal member and the second horizontal member via the third connecting member. Also, the other end of the third inclined member can be easily connected to the intersection part of the first inclined member and the second inclined member via the fourth connecting member.

[0020] (8) In the roof frame structure described in (7) above, the third gradient member is disposed between the first surface of the third connecting member and the second surface of the fourth connecting member that faces the first surface in the fourth connecting member. The first surface of the third connecting member is inclined so as to face upward, and the second surface of the fourth connecting member is inclined so as to face upward.

[0021] According to this configuration, the third gradient member can be easily disposed between the third connecting member and the fourth connecting member, and when the third gradient member is disposed between the third connecting member and the fourth connecting member, it is possible to suppress the third gradient member from falling. Therefore, the construction of the roof frame structure can be efficiently performed.

[0022] (9) In the roof frame structure described in (1) above, the first connecting member has a first end portion and a second end portion on the side opposite to the first end portion. The second connecting member has a third end portion and a fourth end portion on the side opposite to the third end portion. The first end portion of the first connecting member is connected to the first gradient member via a first fitting. The second end portion of the first connecting member is connected to the first horizontal member via a second fitting. The third end portion of the second connecting member is connected to the second gradient member via a third fitting. The fourth end portion of the second connecting member is connected to the second horizontal member via a fourth fitting.

[0023] The first connecting member is disposed obliquely with respect to the first gradient member and the first horizontal member. Therefore, it is difficult to directly connect the first end portion of the first connecting member to the first gradient member. It is difficult to directly connect the second end portion of the first connecting member to the first horizontal member. Further, the second connecting member is disposed obliquely with respect to the second gradient member and the second horizontal member. It is difficult to directly connect the third end portion of the second connecting member to the second gradient member. It is difficult to directly connect the fourth end portion of the second connecting member to the second horizontal member.

[0024] In this regard, according to the above configuration, since fittings are used in these connections, the connection between the first end portion of the first connecting member and the first gradient member, the connection between the second end portion of the first connecting member and the first horizontal member, the connection between the third end portion of the second connecting member and the second gradient member, and the connection between the fourth end portion of the second connecting member and the second horizontal member can be efficiently performed.

[0025] (10) In the roof frame structure according to (9) above, the first connecting member is disposed between the first fitting surface of the first fitting and the second fitting surface of the second fitting that faces the first fitting surface, the first fitting surface of the first fitting is inclined so as to face upward, and the second fitting surface of the second fitting is inclined so as to face upward.

[0026] According to this configuration, the first connecting member can be easily disposed between the first fitting and the second fitting, and when the first connecting member is disposed between the first fitting and the second fitting, it is possible to suppress the first connecting member from falling. Therefore, the construction of the roof frame structure can be efficiently performed.

[0027] (11) In the roof frame structure according to (10) above, the second connecting member is disposed between the third fitting surface of the third fitting and the fourth fitting surface of the fourth fitting that faces the third fitting surface, the third fitting surface of the third fitting is inclined so as to face upward, and the fourth fitting surface of the fourth fitting is inclined so as to face upward.

[0028] According to this configuration, the second connecting member can be easily disposed between the third fitting and the fourth fitting, and when the second connecting member is disposed between the third fitting and the fourth fitting, it is possible to suppress the second connecting member from falling. Therefore, the construction of the roof frame structure can be efficiently performed.

[0029] (12) A building that solves the above problems includes any one of the roof frame structures of (1) to (11) above. According to this configuration, since the building includes the above roof frame structure, it is possible to provide a space with fewer framework members directly below the roof corner.

Effect of the Invention

[0030] According to the roof structure and building of the present disclosure, a space can be provided directly below the roof corner.

Brief Description of the Drawings

[0031]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Figure 12

Figure 13

Figure 14

Figure 15

Figure 16

Figure 17

Figure 18

BEST MODE FOR CARRYING OUT THE INVENTION

[0032] <First Embodiment> With reference to FIGS. 1 to 14, the roof structure 10 of the present embodiment and the building 1 including the roof structure 10 will be described. The present technology will be described by taking a two-story building 1 as an example.

[0033] [Building] As shown in FIG. 1, the building 1 includes roofs 2 and 3. In the building 1 of the present embodiment, the roof 2 of the first floor part (also called the lower roof) and the roof 3 of the second floor part are provided. The roof 2 of the first floor part has a roof corner part 4. The roof corner part 4 includes a protruding roof corner part 5 and a recessed roof corner part 6 (see FIG. 18). The protruding roof corner part 5 is a roof part that covers the protruding corner of the building 1. The protruding roof corner part 5 has two roof parts 7 that intersect each other. The two roof parts 7 at the protruding roof corner part 5 intersect in a gable shape. The recessed roof corner part 6 is a roof part that covers the recessed corner of the building 1. The recessed roof corner part 6 includes two roof parts 7. The two roof parts 7 at the recessed roof corner part 6 intersect in a valley shape.

[0034] Hereinafter, the roof 2 of the first floor part will be described. In addition, when there is a roof corner part 4 in the roof 3 of the second floor part, the present technology can also be applied to the roof corner part of the second floor part.

[0035] The roof 2 of the first floor part has a protruding roof corner part 5. The roof 2 of the first floor part (hereinafter simply referred to as "roof 2") further has a plurality of roof parts 7 adjacent to the protruding roof corner part 5.

[0036] In this embodiment, the roof protruding corner portion 5 has a first roof portion 7A and a second roof portion 7B that intersects the first roof portion 7A. The first roof portion 7A is continuous with the third roof portion 7C. The inclination angle of the first roof portion 7A is equal to the inclination angle of the third roof portion 7C. The second roof portion 7B is continuous with the fourth roof portion 7D. The inclination angle of the second roof portion 7B is equal to the inclination angle of the fourth roof portion 7D.

[0037] The building 1 includes a roof frame structure 10. The roof frame structure 10 is the framework of the roof corner portion 4. The framework is composed of axial members. The axial members include columns, horizontal members, and gradient members. The horizontal members include beams and girders. In this embodiment, the roof frame structure 10 includes first to fourth horizontal members 21 to 24 as horizontal members. The roof frame structure 10 includes first to third gradient members 27 to 29 as gradient members. The roof frame structure 10 includes first to fourth columns 41 to 44 as columns.

[0038] The roof protruding corner portion 5 includes the roof frame structure 10, a roof base portion provided on the roof frame structure 10, and roofing materials. The roof base portion includes purlins and corner timbers. The roofing materials include roof siding and tiles.

[0039] As shown in FIGS. 2 and 3, the roof frame structure 10 includes a first horizontal member 21, a second horizontal member 22, a first gradient member 27, a second gradient member 28, a first connecting member 31, and a second connecting member 32. The roof frame structure 10 includes one each of the first horizontal member 21, the second horizontal member 22, the first gradient member 27, and the second gradient member 28. The roof frame structure 10 includes one or more first connecting members 31. The roof frame structure 10 includes one or more second connecting members 32. In this embodiment, the roof frame structure 10 includes two first connecting members 31 and two second connecting members 32.

[0040] In this embodiment, the roof frame structure 10 further includes a third connecting member 33 and a fourth connecting member 34. The roof frame structure 10 further includes a third horizontal member 23 and a fourth horizontal member 24. The roof frame structure 10 further includes a third gradient member 29.

[0041] [First horizontal cross member] The first horizontal cross member 21 is composed of glued laminated timber or solid wood. The height dimension of the first horizontal cross member 21 is larger than the height dimension of the third horizontal cross member 23.

[0042] The first horizontal cross member 21 is arranged along the lower end 7X or the upper end of the first roof portion 7A. In this embodiment, the first horizontal cross member 21 is arranged along the lower end 7X of the first roof portion 7A. The first horizontal cross member 21 is arranged obliquely upward from the lower end 7X of the first roof portion 7A. The first horizontal cross member 21 is arranged more inward than the first outer wall 8A at the corner of the building 1 in plan view. The first outer wall 8A is an outer wall that intersects the first roof portion 7A.

[0043] The first horizontal cross member 21 is arranged such that the axis of the first horizontal cross member 21 is located higher than the axis of the third horizontal cross member 23. The third horizontal cross member 23 is arranged above the first outer wall 8A. In this way, the first horizontal cross member 21, which has a larger height dimension than the third horizontal cross member 23, is arranged more inward and above the first outer wall 8A. Thereby, it is possible to form a larger opening in the first outer wall 8A compared to the case where the first horizontal cross member 21 is arranged above the first outer wall 8A.

[0044] [Second horizontal cross member] The second horizontal cross member 22 is composed of glued laminated timber or solid wood. The height dimension of the second horizontal cross member 22 is larger than the height dimension of the fourth horizontal cross member 24.

[0045] The second horizontal cross member 22 is arranged along the lower end 7Y or the upper end of the second roof portion 7B. In this embodiment, the second horizontal cross member 22 is arranged along the lower end 7Y of the second roof portion 7B. The second horizontal cross member 22 is arranged obliquely upward from the lower end 7Y of the second roof portion 7B. The second horizontal cross member 22 is arranged more inward than the second outer wall 8B at the corner of the building 1 in plan view. The second outer wall 8B is an outer wall that intersects the second roof portion 7B.

[0046] The second horizontal member 22 is arranged such that the axis of the second horizontal member 22 is positioned higher than the axis of the fourth horizontal member 24. The fourth horizontal member 24 is arranged at the upper part of the second outer wall 8B. In this way, the second horizontal member 22 having a larger height dimension than the fourth horizontal member 24 is arranged inward and above the second outer wall 8B. Thereby, it is possible to form a larger opening in the second outer wall 8B as compared with the case where the second horizontal member 22 is arranged at the upper part of the second outer wall 8B.

[0047] The first horizontal member 21 is orthogonal to the second horizontal member 22 in plan view. In the present embodiment, the first horizontal member 21 abuts against the second horizontal member 22. This is also referred to as "assembly with the second horizontal member winning". The second horizontal member 22 is arranged between the second gradient member 28 and the third horizontal member 23 and is connected to the second gradient member 28 and the third horizontal member 23. The first horizontal member 21 is arranged between the first gradient member 27 and the second horizontal member 22 and is connected to the first gradient member 27 and the second horizontal member 22.

[0048] In another example, the second horizontal member 22 may abut against the first horizontal member 21. This is also referred to as "assembly with the first horizontal member winning". The first horizontal member 21 is arranged between the first gradient member 27 and the fourth horizontal member 24 and is connected to the first gradient member 27 and the fourth horizontal member 24. The second horizontal member 22 is arranged between the second gradient member 28 and the first horizontal member 21 and is connected to the second gradient member 28 and the first horizontal member 21.

[0049] [First gradient member] The first gradient member 27 is composed of a glued laminated timber or a solid wood material. The height dimension of the first gradient member 27 is larger than the height dimension of the third horizontal member 23. The first gradient member 27 is arranged to be orthogonal to the lower end 7X of the first roof part 7A in plan view. The first gradient member 27 is arranged at the boundary between the first roof part 7A and the third roof part 7C.

[0050] The first gradient member 27 inclines toward the first horizontal member 21. The first gradient member 27 inclines downward toward the first horizontal member 21. The first gradient member 27 extends toward the first horizontal member 21 and extends downward beyond the first horizontal member 21. Also, the first gradient member 27 is orthogonal to the first horizontal member 21 in plan view. In the present embodiment, the first horizontal member 21 is connected so as to abut perpendicularly to the first gradient member 27 in plan view.

[0051] The first gradient member 27 has a first end portion 27A and a second end portion 27B on the side opposite to the first end portion 27A. The second end portion 27B is located at a lower position than the first end portion 27A in a state where the first gradient member 27 is attached to the third column 43.

[0052] The first gradient member 27 is disposed between the first column 41 and the third column 43. The first gradient member 27 is connected to the first column 41 and the third column 43. The first end portion 27A of the first gradient member 27 is connected to the third column 43 via a mounting bracket. The second end portion 27B of the first gradient member 27 is connected to the first column 41 via a mounting bracket.

[0053] The mounting bracket is commercially available. An example of the mounting bracket includes a fixing plate fixed to the side surface of one member connected to each other and two insertion plates that enter slits provided in the end surface of the other member. The insertion plate is orthogonal to the fixing plate. The insertion plate is fixed to the other member by a drift pin that intersects the other member and the insertion plate. The illustration of the mounting bracket is omitted in FIGS. 2 to 6.

[0054] The first gradient member 27 is orthogonal to the second gradient member 28 in plan view. In the present embodiment, the first gradient member 27 is connected to a first side surface 43A, which is one of two side surfaces intersecting at a right angle on the third column 43 (see FIG. 11). The second gradient member 28 is connected to a second side surface 43B, which is the other of the two side surfaces intersecting at a right angle on the third column 43. The extension line of the axis of the first gradient member 27 is orthogonal to the extension line of the axis of the second gradient member 28.

[0055] [Second Gradient Member] The second gradient member 28 is composed of glued laminated timber or solid wood. The height dimension of the second gradient member 28 is larger than the height dimension of the fourth horizontal member 24. The second gradient member 28 is arranged so as to be orthogonal to the lower end 7Y of the second roof part 7B in plan view. The second gradient member 28 is arranged at the boundary between the second roof part 7B and the fourth roof part 7D.

[0056] The second gradient member 28 inclines toward the second horizontal member 22. The second gradient member 28 inclines downward toward the second horizontal member 22. The second gradient member 28 extends toward the second horizontal member 22 and extends downward beyond the second horizontal member 22. Also, the second gradient member 28 is orthogonal to the second horizontal member 22 in plan view. In the present embodiment, the second horizontal member 22 is connected so as to abut at a right angle to the second gradient member 28 in plan view.

[0057] The second gradient member 28 has a third end portion 28A and a fourth end portion 28B on the side opposite to the third end portion 28A. The fourth end portion 28B is located at a position lower than the third end portion 28A in a state where the second gradient member 28 is attached to the third column 43.

[0058] The second gradient member 28 is arranged between the second column 42 and the third column 43. The second gradient member 28 is connected to the second column 42 and the third column 43. The third end portion 28A of the second gradient member 28 is connected to the third column 43 via a mounting fitting. The fourth end portion 28B of the second gradient member 28 is connected to the second column 42 via a mounting fitting.

[0059] [Third Horizontal Member] The third horizontal member 23 is arranged parallel to the first horizontal member 21. The third horizontal member 23 is connected to the first horizontal member 21 by a plurality of first connection members 23A. The third horizontal member 23 is arranged between the first column 41 and the fourth column 44 and is connected to the first column 41 and the fourth column 44. The third horizontal member 23 is further supported by the first intermediate column 45. The first intermediate column 45 is arranged between the first column 41 and the fourth column 44. The first intermediate column 45 is also called a pipe column.

[0060] [Fourth Horizontal Member] The fourth horizontal cross-member 24 is arranged parallel to the second horizontal cross-member 22. The fourth horizontal cross-member 24 is connected to the second horizontal cross-member 22 by a plurality of second connecting members 24A. The fourth horizontal cross-member 24 is arranged between the second column 42 and the fourth column 44 and is connected to the second column 42 and the fourth column 44. The fourth horizontal cross-member 24 is further supported by a second intermediate column 46. The second intermediate column 46 is arranged between the second column 42 and the fourth column 44. The second intermediate column 46 is also called a pipe column.

[0061] [Third gradient member] The third gradient member 29 is composed of laminated wood or solid wood. The height dimension of the third gradient member 29 is larger than the height dimension of the third horizontal cross-member 23.

[0062] As shown in FIG. 3, the third gradient member 29 is arranged along an intersection line 7R where a plane along the first roof portion 7A and a plane along the second roof portion 7B intersect.

[0063] The third gradient member 29 is arranged between a third connecting member 33 and a fourth connecting member 34 described later. And the third gradient member 29 is connected to the third connecting member 33 and the fourth connecting member 34.

[0064] The third gradient member 29 has a first end portion 29A and a second end portion 29B on the side opposite to the first end portion 29A. The first end portion 29A of the third gradient member 29 is connected to the third connecting member 33 via a mounting fitting. The second end portion 29B of the third gradient member 29 is connected to the fourth connecting member 34 via a mounting fitting.

[0065] Here, the mounting state of the third gradient member 29 is defined. The mounting state of the third gradient member 29 indicates a state where the first end portion 29A of the third gradient member 29 is connected to the third connecting member 33 via a mounting metal fitting, and the second end portion 29B of the third gradient member 29 is connected to the fourth connecting member 34 via a metal fitting.

[0066] As shown in FIG. 4, the third gradient member 29 is disposed between the first surface 33C of the third connecting member 33 and the second surface 34C of the fourth connecting member 34. The second surface 34C of the fourth connecting member 34 is a surface facing the first surface 33C of the third connecting member 33.

[0067] As shown in FIG. 4, the third gradient member 29 has a first end face 29C which is an end face on the first end portion 29A side, and a second end face 29D which is on the side opposite to the first end face 29C in the longitudinal direction. The first end face 29C of the third gradient member 29 is formed to be parallel to the first surface 33C of the third connecting member 33 in the mounted state of the third gradient member 29. The second end face 29D of the third gradient member 29 is formed to be parallel to the second surface 34C of the fourth connecting member 34 in the mounted state of the third gradient member 29. Therefore, the third gradient member 29 is configured in a trapezoid shape in a side view.

[0068] [First Connecting Member] The first connecting member 31 is composed of a glued laminated timber or a solid wood. The height dimension of the one of the two first connecting members 31 that is closer to the third gradient member 29 is equal to the height dimension of the third gradient member 29, or slightly smaller than the height dimension of the third gradient member 29. The height dimension of the one of the two first connecting members 31 that is farther from the third gradient member 29 is smaller than the height dimension of the third gradient member 29.

[0069] In a plan view, the first connecting member 31 intersects the first gradient member 27 at a first angle. The first angle is defined as the angle between the first connecting member 31 and the lower portion in the inclination direction than the portion where the first connecting member 31 is connected in the first gradient member 27. The first angle is, for example, 45 degrees.

[0070] As shown in FIG. 3, the first connecting member 31 connects the first cross member 21 and the first gradient member 27. The first connecting member 31 has a first end portion 31A and a second end portion 31B opposite to the first end portion 31A. The first end portion 31A of the first connecting member 31 is connected to the first gradient member 27 via the first fitting 51. The second end portion 31B of the first connecting member 31 is connected to the first cross member 21 via the second fitting 52.

[0071] As shown in FIG. 5, the first connecting member 31 is disposed between the first fitting surface 51A of the first fitting 51 and the second fitting surface 52A of the second fitting 52 facing the first fitting surface 51A. The first fitting surface 51A of the first fitting 51 is inclined so as to face upward. The second fitting surface 52A of the second fitting 52 is inclined so as to face upward.

[0072] [Second Connecting Member] The second connecting member 32 is made of laminated wood or solid wood. The height dimension of the one of the two second connecting members 32 closer to the third gradient member 29 is equal to or slightly smaller than the height dimension of the third gradient member 29. The height dimension of the one of the two second connecting members 32 farther from the third gradient member 29 is smaller than the height dimension of the third gradient member 29.

[0073] In plan view, the second connecting member 32 intersects the second gradient member 28 at a second angle. The second angle is defined as the angle between the second connecting member 32 and the lower portion in the inclination direction than the portion where the second connecting member 32 is connected in the second gradient member 28. The second angle is, for example, 45 degrees.

[0074] As shown in FIG. 3, the second connecting member 32 connects the second cross member 22 and the second gradient member 28. The second connecting member 32 has a third end portion 32A and a fourth end portion 32B opposite to the third end portion 32A. The third end portion 32A of the second connecting member 32 is connected to the second gradient member 28 via the third fitting 53. The fourth end portion 32B of the second connecting member 32 is connected to the second cross member 22 via the fourth fitting 54.

[0075] The second connecting member 32 is disposed between the third fitting surface 53A of the third fitting 53 and the fourth fitting surface 54A of the fourth fitting 54 facing the third fitting surface 53A. The third fitting surface 53A of the third fitting 53 is inclined so as to face upward. The fourth fitting surface 54A of the fourth fitting 54 is inclined so as to face upward.

[0076] [Third Connecting Member] The third connecting member 33 is made of glued laminated timber or solid wood. The third connecting member 33 is arranged horizontally. The height dimension of the third connecting member 33 is equal to or slightly larger than the height dimension of the third gradient member 29.

[0077] In plan view, the third connecting member 33 intersects the first transverse member 21 at a third angle. The third angle is defined as the angle between the third connecting member 33 and the portion on the outermost corner tip side rather than the portion where the third connecting member 33 is connected in the first transverse member 21. The third angle is, for example, 45 degrees.

[0078] As shown in FIG. 3, the third connecting member 33 connects the first transverse member 21 and the second transverse member 22. The third connecting member 33 has a first end 33A and a second end 33B opposite to the first end 33A. The first end 33A of the third connecting member 33 is connected to the first transverse member 21 via the seventh fitting 57. The second end 33B of the third connecting member 33 is connected to the second transverse member 22 via the eighth fitting 58. Hereinafter, the state in which the third connecting member 33 is connected to the first transverse member 21 and the second transverse member 22 via fittings is referred to as the mounting state of the third connecting member 33.

[0079] The third connecting member 33 has a first surface 33C, a first end surface 33D provided at the first end 33A, and a second end surface 33E provided at the second end 33B. The first end surface 33D contacts the seventh fitting 57. The second end surface 33E contacts the eighth fitting 58.

[0080] The first surface 33C of the third connecting member 33 is a surface that intersects the first end surface 33D and the second end surface 33E, and connects the first end surface 33D and the second end surface 33E between the first end surface 33D and the second end surface 33E.

[0081] As shown in FIG. 4, the first surface 33C of the third connecting member 33 is inclined upward. Specifically, the first surface 33C of the third connecting member 33 faces the second surface 34C of the fourth connecting member 34 and is inclined with respect to the vertical direction so as to face upward in the mounting state of the third connecting member 33.

[0082] [Fourth connecting member] The fourth connecting member 34 is composed of glued laminated timber or solid wood. The fourth connecting member 34 is arranged horizontally. The height dimension of the fourth connecting member 34 is equal to, or slightly larger than, the height dimension of the third gradient member 29.

[0083] In plan view, the fourth connecting member 34 intersects the first gradient member 27 at a fourth angle. The fourth angle is defined as the angle between the fourth connecting member 34 and the portion on the side of the third column 43 rather than the portion where the fourth connecting member 34 is connected in the first gradient member 27. The fourth angle is, for example, 45 degrees.

[0084] As shown in FIG. 3, the fourth connecting member 34 connects the first gradient member 27 and the second gradient member 28. The fourth connecting member 34 has a third end portion 34A and a fourth end portion 34B on the side opposite to the third end portion 34A. The third end portion 34A of the fourth connecting member 34 is connected to the first gradient member 27 via a fifth fitting 55. The fourth end portion 34B of the fourth connecting member 34 is connected to the second gradient member 28 via a sixth fitting 56. Hereinafter, the state in which the fourth connecting member 34 is connected to the first gradient member 27 and the second gradient member 28 via fittings is referred to as the mounting state of the fourth connecting member 34.

[0085] The fourth connecting member 34 has a second surface 34C, a third end surface 34D provided at the third end portion 34A, and a fourth end surface 34E provided at the fourth end portion 34B. The third end surface 34D contacts the fifth fitting 55. The fourth end surface 34E contacts the sixth fitting 56.

[0086] The second surface 34C of the fourth connecting member 34 is a surface that intersects the third end surface 34D and the fourth end surface 34E, and connects the third end surface 34D and the fourth end surface 34E between the third end surface 34D and the fourth end surface 34E.

[0087] As shown in FIG. 4, the second surface 34C of the fourth connecting member 34 is inclined so as to face upward. Specifically, in the mounted state of the fourth connecting member 34, the second surface 34C of the fourth connecting member 34 faces the first surface 33C of the third connecting member 33 and is inclined with respect to the vertical direction so as to face upward.

[0088] [Column] The first column 41 supports the first gradient member 27. Specifically, the first column 41 supports the second end portion 27B of the first gradient member 27. The second end portion 27B of the first gradient member 27 is connected to the first column 41 via a mounting bracket.

[0089] The second column 42 supports the second gradient member 28. Specifically, the second column 42 supports the fourth end portion 28B of the second gradient member 28. The fourth end portion 28B of the second gradient member 28 is connected to the second column 42 via a mounting bracket.

[0090] The third column 43 is disposed at the end of the intersection line 7R where the first roof portion 7A and the second roof portion 7B intersect. In plan view, the third column 43 is disposed at the intersection of the first gradient member 27 and the second gradient member 28. The third column 43 supports the first end portion 27A of the first gradient member 27 and the third end portion 28A of the second gradient member 28. The third column 43 is rectangular in plan view. The first end portion 27A of the first gradient member 27 is connected to the first side surface 43A of the third column 43 via a mounting bracket. The third end portion 28A of the second gradient member 28 is connected to the second side surface 43B of the third column 43, which is orthogonal to the first side surface 43A, via a mounting bracket.

[0091] The fourth column 44 is disposed in the vicinity of the portion where the first cross member 21 and the second cross member 22 are orthogonal in plan view. Specifically, in plan view, the fourth column 44 is disposed on the diagonal line passing through the third column 43 in the following rectangular frame. The rectangular frame indicates a rectangular frame formed by the first cross member 21, the second cross member 22, the first gradient member 27, and the second gradient member 28.

[0092] The fourth column 44 supports the end of the third cross-member 23 near the fourth cross-member 24. The fourth column 44 supports the end of the fourth cross-member 24 near the third cross-member 23. The end of the third cross-member 23 is connected to the first side surface 44A of the fourth column 44 via a mounting fitting. The end of the fourth cross-member 24 is connected to the second side surface 44B of the fourth column 44, which is orthogonal to the first side surface 44A, via a mounting fitting.

[0093] [Relationship between the column and other members] The first gradient member 27 is obliquely spanned from the third column 43 to the first column 41. The second gradient member 28 is obliquely spanned from the third column 43 to the second column 42. The second gradient member 28 is orthogonal to the first gradient member 27 in plan view.

[0094] The third cross-member 23 is horizontally spanned from the fourth column 44 to the first column 41. The third cross-member 23 is arranged parallel to the second gradient member 28 in plan view. The fourth cross-member 24 is horizontally spanned from the fourth column 44 to the second column 42. The fourth cross-member 24 is arranged parallel to the first gradient member 27 in plan view.

[0095] The first cross-member 21 is horizontally spanned from the vicinity of the second end 27B of the first gradient member 27 to the vicinity of the fourth column 44 of the second cross-member 22. The first cross-member 21 is orthogonal to the first gradient member 27 and the second cross-member 22 in plan view. The first cross-member 21 is arranged between the second gradient member 28 and the third cross-member 23 in plan view. The first cross-member 21 is arranged parallel to the second gradient member 28 and the third cross-member 23 in plan view.

[0096] The second cross-member 22 is horizontally spanned from the vicinity of the fourth end 28B of the second gradient member 28 to the vicinity of the fourth column 44 of the third cross-member 23. The second cross-member 22 is orthogonal to the second gradient member 28 and the third cross-member 23 in plan view. The second cross-member 22 is arranged between the first gradient member 27 and the fourth cross-member 24 in plan view. The second cross-member 22 is arranged parallel to the first gradient member 27 and the fourth cross-member 24 in plan view.

[0097] The first connecting member 31 connects the first gradient member 27 and the first transverse member 21. The first connecting member 31 is arranged at 45 degrees with respect to the first gradient member 27 in plan view. The second connecting member 32 connects the second gradient member 28 and the third transverse member 23. The second connecting member 32 is arranged at 45 degrees with respect to the second gradient member 28 in plan view.

[0098] The third connecting member 33 connects the first transverse member 21 and the second transverse member 22. The third connecting member 33 is arranged at 45 degrees with respect to the first transverse member 21 in plan view. The fourth connecting member 34 connects the first gradient member 27 and the second gradient member 28. The fourth connecting member 34 is arranged at 45 degrees with respect to the first gradient member 27 in plan view.

[0099] The third gradient member 29 connects the third connecting member 33 and the fourth connecting member 34. The third gradient member 29 is orthogonal to the third connecting member 33 and the fourth connecting member 34 in plan view. The third gradient member 29 is arranged parallel to the first connecting member 31 and parallel to the second connecting member 32 in plan view.

[0100] A first connecting member 23A that connects the first transverse member 21 and the third transverse member 23 is provided between the first transverse member 21 and the third transverse member 23. A second connecting member 24A that connects the second transverse member 22 and the fourth transverse member 24 is provided between the second transverse member 22 and the fourth transverse member 24.

[0101] [First fitting] The first fitting 51 will be described with reference to FIGS. 3 and 6 to 10. As shown in FIGS. 3 and 6, the first fitting 51 connects the first gradient member 27 and the first connecting member 31. Here, for the purpose of explaining the relationship between the first fitting 51 and other members, the mounting state of the first fitting 51 is defined. The state in which the first fitting 51 is attached to the first gradient member 27 and the first connecting member 31 is connected to the first fitting 51 will hereinafter be referred to as the mounting state of the first fitting 51.

[0102] As shown in FIGS. 6 and 8, the first fitting 51 includes a first fixing plate 61 fixed to the first side surface 27C of the first gradient member 27, a second fixing plate 62 fixed to the first connecting member 31, and a first connecting plate 63 connecting the first fixing plate 61 and the second fixing plate 62. The first fixing plate 61 and the second fixing plate 62 are provided with a plurality of first bolt holes 64 through which bolts are inserted.

[0103] As shown in FIG. 9, the first fitting 51 is provided with a first rib 65 connecting the first fixing plate 61 and the second fixing plate 62. The first rib 65 extends so as to be orthogonal to the first fixing plate 61 and the first connecting plate 63.

[0104] As shown in FIG. 7, in the mounted state of the first fitting 51, in a plan view, the extension lines L1 and L2 of the upper end 62A and the lower end 62B of the second fixing plate 62 respectively intersect the first gradient member 27 at a fifth angle. The fifth angle is, for example, 45 degrees. Also, in the mounted state of the first fitting 51, in a plan view, the second fixing plate 62 is configured to be inclined at an angle such that the lower end 62B of the second fixing plate 62 can be visually recognized without overlapping the upper end 62A when viewed from above.

[0105] FIG. 10 is a view of the first fitting 51 seen from the same direction as the direction along the line 5-5 of FIG. 3. As shown in FIG. 10, the second fixing plate 62 is inclined downward in the direction toward the first connecting member 31.

[0106] [Second fitting] As shown in FIG. 3, the second fitting 52 connects the first cross member 21 and the first connecting member 31. The second fitting 52 has a structure similar to that of the first fitting 51. The second fitting 52 has a structure that is changed to a shape corresponding to the connection between the first cross member 21 and the first connecting member 31 from a structure that is plane-symmetric with the first fitting 51 with respect to the plane orthogonal to the first connecting member 31.

[0107] [Third fitting] As shown in FIG. 3, the third fitting 53 connects the second gradient member 28 and the second connecting member 32. The third fitting 53 has a structure similar to that of the first fitting 51. The third fitting 53 has a structure that is mirror-symmetrical to the first fitting 51 with respect to the plane P passing through the axes of the third column 43 and the fourth column 44.

[0108] [Fourth fitting] As shown in FIG. 3, the fourth fitting 54 connects the second cross member 22 and the second connecting member 32. The fourth fitting 54 has a structure similar to that of the second fitting 52. The fourth fitting 54 has a structure that is mirror-symmetrical to the second fitting 52 with respect to the plane P passing through the axes of the third column 43 and the fourth column 44.

[0109] [Fifth fitting] The fifth fitting 55 will be described with reference to FIGS. 3 and 11 to 14. As shown in FIGS. 3 and 11, the fifth fitting 55 connects the first gradient member 27 and the fourth connecting member 34. Here, for the purpose of explaining the relationship between the fifth fitting 55 and other members, the mounting state of the fifth fitting 55 is defined. The state in which the fifth fitting 55 is attached to the first gradient member 27 and the fourth connecting member 34 is connected to the fifth fitting 55 will be hereinafter referred to as the mounting state of the fifth fitting 55.

[0110] As shown in FIGS. 11 and 12, the fifth fitting 55 includes a third fixing plate 71 fixed to the first side surface 27C of the first gradient member 27, a fourth fixing plate 72 fixed to the fourth connecting member 34, and a second connecting plate 73 connecting the third fixing plate 71 and the fourth fixing plate 72. A plurality of second bolt holes 74 for inserting bolts are provided in the third fixing plate 71 and the fourth fixing plate 72.

[0111] As shown in FIG. 13, the fifth fitting 55 is provided with a second rib 75 connecting the third fixing plate 71 and the fourth fixing plate 72. The second rib 75 extends so as to be orthogonal to the third fixing plate 71 and the second connecting plate 73.

[0112] As shown in FIG. 11, the fifth fitting 55 is configured such that, in the mounted state of the fifth fitting 55, in a plan view, the extension lines L3 and L4 of the upper end 72A and the lower end 72B of the fourth fixing plate 72 respectively intersect the first gradient member 27 at a sixth angle. The sixth angle is, for example, 45 degrees. Further, the fifth fitting 55 is configured such that, in the mounted state of the fifth fitting 55, in a plan view, the fourth fixing plate 72 extends in the vertical direction such that the lower end 72B of the fourth fixing plate 72 overlaps the upper end 72A when viewed from above.

[0113] FIG. 14 is a view of the fifth fitting 55 as viewed from the same direction as the direction along the line 5-5 of FIG. 3. As shown in FIG. 14, a plurality of second bolt holes 74 provided in the fourth fixing plate 72 are arranged along a line X. The line X is defined as a line along a line where the second surface 34C of the fourth connecting member 34 intersects a plane P passing through the axis of the third column 43 and the axis of the fourth column 44.

[0114] [Sixth fitting] As shown in FIG. 3, the sixth fitting 56 connects the second gradient member 28 and the fourth connecting member 34. The sixth fitting 56 has a structure similar to that of the fifth fitting 55. The sixth fitting 56 has a structure that is plane-symmetric with the fifth fitting 55 with respect to a plane P passing through the axis of the third column 43 and the axis of the fourth column 44.

[0115] [Seventh fitting] As shown in FIG. 3, the seventh fitting 57 connects the first cross member 21 and the third connecting member 33. The seventh fitting 57 has a structure similar to that of the fifth fitting 55. The seventh fitting 57 has a structure that is changed from a structure that is plane-symmetric with the fifth fitting 55 with respect to a plane P passing through the axis of the second column 42 and the axis of the fourth column 44 to a shape corresponding to the connection between the first cross member 21 and the third connecting member 33.

[0116] [Eighth fitting] As shown in FIG. 3, the eighth fitting 58 connects the second cross member 22 and the third connecting member 33. The eighth fitting 58 has a structure similar to that of the seventh fitting 57. The eighth fitting 58 has a structure that is plane-symmetric with the seventh fitting 57 with respect to a plane P passing through the axis of the third column 43 and the axis of the fourth column 44.

[0117] [Function of this Embodiment] When the roof 2 is configured by a truss structure, it is conceivable to connect the first horizontal member 21 and the third gradient member 29 with a connecting member, and to connect the second horizontal member 22 and the third gradient member 29 with a connecting member. Hereinafter, an example of such a structure is referred to as a reference example. However, in the case of this reference example, since the third gradient member 29 supports two connecting members, the load applied to the third gradient member 29 increases. As a result, the load on the fourth column 44 increases. Thus, there is a possibility that the roof load is unevenly applied to the third gradient member 29 and the fourth column 44.

[0118] In this regard, in this embodiment, the roof frame structure 10 includes a first connecting member 31 that connects the first horizontal member 21 and the first gradient member 27, and a second connecting member 32 that connects the second horizontal member 22 and the second gradient member 28. According to this configuration, a truss structure is constituted by the first horizontal member 21, the first gradient member 27, and the first connecting member 31. A truss structure is constituted by the second horizontal member 22, the second gradient member 28, and the second connecting member 32. Therefore, the roof corner 4 can be supported without assembling the small house frame. And according to this structure, since the first connecting member 31 and the second connecting member 32 are not connected to the third gradient member 29, the roof load can be dispersed to the columns at the four corners of the roof corner 4 as compared with the reference example. Thereby, the roof corner 4 is stabilized.

[0119] [Effect of this Embodiment] The effect of this embodiment will be described. (1) The roof frame structure 10 includes a first connecting member 31 that connects the first horizontal member 21 and the first gradient member 27, and a second connecting member 32 that connects the second horizontal member 22 and the second gradient member 28. According to this configuration, a truss structure is constituted by the first horizontal member 21, the first gradient member 27, and the first connecting member 31. A truss structure is constituted by the second horizontal member 22, the second gradient member 28, and the second connecting member 32. With this structure, the roof corner 4 can be supported without assembling the small house frame. Therefore, a space with few framework members can be provided directly below the roof corner 4.

[0120] (2) In the roof frame structure 10, the first gradient member 27 is connected to the first column 41 and the third column 43. The second gradient member 28 is connected to the second column 42 and the third column 43. According to this configuration, a space can be formed under the first gradient member 27 between the first column 41 and the third column 43. Also, a space can be formed under the second gradient member 28 between the second column 42 and the third column 43. As a result, the connection portion between the space directly below the first roof portion 7A of the roof corner 4 and the space directly below the roof portion adjacent to the first roof portion 7A can be widened. Also, the connection portion between the space directly below the second roof portion 7B of the roof corner 4 and the space directly below the roof portion adjacent to the second roof portion 7B can be widened.

[0121] (3) In the roof frame structure 10, the third horizontal member 23 is disposed between the first column 41 and the fourth column 44 and is connected to the first column 41 and the fourth column 44. The fourth horizontal member 24 is disposed between the second column 42 and the fourth column 44 and is connected to the second column 42 and the fourth column 44. The second horizontal member 22 is assembled with a second horizontal member win over the first horizontal member 21 at the intersection portion with the first horizontal member 21. Specifically, the second horizontal member 22 is disposed between the second gradient member 28 and the third horizontal member 23 and is connected to the second gradient member 28 and the third horizontal member 23.

[0122] On the other hand, the first horizontal member 21 may be assembled with a first horizontal member win over the second horizontal member 22 at the intersection portion with the second horizontal member 22. Specifically, the first horizontal member 21 is disposed between the first gradient member 27 and the fourth horizontal member 24 and is connected to the first gradient member 27 and the fourth horizontal member 24.

[0123] According to this configuration, the roof corner 4 is configured in a rectangle in plan view. And in plan view, columns are arranged at each vertex of the roof projecting corner 5. Thus, since the projecting corner is supported by four columns, the projecting corner is stabilized.

[0124] (4) The roof frame structure 10 further includes a third connecting member 33 that connects the first horizontal member 21 and the second horizontal member 22, and a fourth connecting member 34 that connects the first gradient member 27 and the second gradient member 28.

[0125] According to this configuration, the frame structure formed by the first horizontal member 21, the second horizontal member 22, the first gradient member 27, and the second gradient member 28 can be reinforced by the third connecting member 33 and the fourth connecting member 34.

[0126] (5) The roof frame structure 10 further includes a third gradient member 29. The third gradient member 29 is arranged along an intersection line 7R where a plane along the first roof portion 7A and a plane along the second roof portion 7B intersect. According to this configuration, a purlin as a roof base can be placed on the third gradient member 29. Therefore, the purlin is stabilized.

[0127] (6) In the present embodiment, the third gradient member 29 is connected to the third connecting member 33 and the fourth connecting member 34.

[0128] In this case, the third gradient member 29 is along the intersection line 7R where the plane along the first roof portion 7A and the plane along the second roof portion 7B intersect. Therefore, if the third connecting member 33 and the fourth connecting member 34 are not provided, it is necessary to connect the third gradient member 29 to the intersection portion of the first horizontal member 21 and the second horizontal member 22, and the intersection portion of the first gradient member 27 and the second gradient member 28. However, it is difficult to directly connect the end of the third gradient member 29 to such an intersection portion.

[0129] In this regard, according to the above configuration, the first end portion 29A of the third gradient member 29 can be easily connected to the intersection portion of the first horizontal member 21 and the second horizontal member 22 via the third connecting member 33. Also, the second end portion 29B of the third gradient member 29 can be easily connected to the intersection portion of the first gradient member 27 and the second gradient member 28 via the fourth connecting member 34.

[0130] (7) The third gradient member 29 is arranged between the first surface 33C of the third connecting member 33 and the second surface 34C of the fourth connecting member 34 that faces the first surface 33C. The first surface 33C of the third connecting member 33 is inclined upward. The second surface 34C of the fourth connecting member 34 is inclined upward.

[0131] According to this configuration, the third gradient member 29 can be easily arranged between the third connecting member 33 and the fourth connecting member 34, and when the third gradient member 29 is arranged between the third connecting member 33 and the fourth connecting member 34, it is possible to suppress the third gradient member 29 from falling. Therefore, the construction of the roof frame structure 10 can be efficiently performed.

[0132] (8) The first end portion 31A of the first connecting member 31 is connected to the first gradient member 27 via the first fitting 51. The second end portion 31B of the first connecting member 31 is connected to the first horizontal member 21 via the second fitting 52. The third end portion 32A of the second connecting member 32 is connected to the second gradient member 28 via the third fitting 53. The fourth end portion 32B of the second connecting member 32 is connected to the second horizontal member 22 via the fourth fitting 54.

[0133] The first connecting member 31 is arranged obliquely with respect to the first gradient member 27 and the first horizontal member 21. For this reason, it is difficult to directly connect the first end portion 31A of the first connecting member 31 to the first gradient member 27. It is difficult to directly connect the second end portion 31B of the first connecting member 31 to the first horizontal member 21. Further, the second connecting member 32 is arranged obliquely with respect to the second gradient member 28 and the second horizontal member 22. For this reason, it is difficult to directly connect the third end portion 32A of the second connecting member 32 to the second gradient member 28. It is difficult to directly connect the fourth end portion 32B of the second connecting member 32 to the second horizontal member 22.

[0134] In this regard, according to the above configuration, since fittings are used in these connections, the connection between the first end portion 31A of the first connecting member 31 and the first gradient member 27, the connection between the second end portion 31B of the first connecting member 31 and the first horizontal member 21, the connection between the third end portion 32A of the second connecting member 32 and the second gradient member 28, and the connection between the fourth end portion 32B of the second connecting member 32 and the second horizontal member 22 can be efficiently performed.

[0135] (9) The first connecting member 31 is disposed between the first fitting surface 51A of the first fitting 51 and the second fitting surface 52A of the second fitting 52 that faces the first fitting surface 51A. The first fitting surface 51A of the first fitting 51 is inclined upward. The second fitting surface 52A of the second fitting 52 is inclined upward.

[0136] According to this configuration, the first connecting member 31 can be easily disposed between the first fitting 51 and the second fitting 52, and when the first connecting member 31 is disposed between the first fitting 51 and the second fitting 52, it is possible to suppress the first connecting member 31 from falling. Therefore, the construction of the roof frame structure 10 can be efficiently performed.

[0137] (10) The second connecting member 32 is disposed between the third fitting surface 53A of the third fitting 53 and the fourth fitting surface 54A of the fourth fitting 54 that faces the third fitting surface 53A. The third fitting surface 53A of the third fitting 53 is inclined upward. The fourth fitting surface 54A of the fourth fitting 54 is inclined upward.

[0138] According to this configuration, the second connecting member 32 can be easily disposed between the third fitting 53 and the fourth fitting 54, and when the second connecting member 32 is disposed between the third fitting 53 and the fourth fitting 54, it is possible to suppress the second connecting member 32 from falling. Therefore, the construction of the roof frame structure 10 can be efficiently performed.

[0139] (11) The building 1 includes the above-described roof frame structure 10. According to this configuration, since the building 1 includes the above-described roof frame structure 10, it is possible to provide a space with fewer framework members directly below the roof corner 4.

[0140] <Second Embodiment> Referring to FIGS. 15 and 16, the roof frame structure 10 according to the second embodiment will be described. In the present embodiment, components common to the first embodiment are denoted by the same reference numerals as those in the first embodiment, and the description of overlapping components is omitted.

[0141] In the first embodiment, the roof frame structure 10 is applied to the framework of one roof protruding corner 5. In the second embodiment, the roof frame structure 10 is applied to the framework of the roof 2 where two roof protruding corners 5 are connected. That is, the roof frame structure 10 is applied to the hip roof.

[0142] Fig. 15 shows a building 1 with a hip roof to which the roof frame structure 10 is applied. The roof frame structure 10 is applied to each of the four roof protruding corners 5 in the hip roof of the building 1.

[0143] Specifically, as shown in Fig. 16, the roof frame structure 10 is applied to the framework of each of the two roof protruding corners 5. In this example, the first gradient member 27 of one roof frame structure 10 is made common with the second gradient member 28 of the other roof frame structure 10.

[0144] <The Third Embodiment> Referring to Fig. 17, the roof frame structure 10 according to the third embodiment will be described. In this embodiment, for the components common to the first embodiment, the same reference numerals as those in the first embodiment are given, and the description of the overlapping components is omitted.

[0145] In the first embodiment, the fourth column 44 is arranged at a position away from the intersection of the first horizontal member 21 and the second horizontal member 22. In this embodiment, the fourth column 44 is arranged at the intersection of the first horizontal member 21 and the second horizontal member 22. Specifically, the fourth column 44 is arranged at the portion where the first horizontal member 21 and the second horizontal member 22 are orthogonal to each other.

[0146] The first horizontal member 21 is arranged between the first column 41 and the fourth column 44 and is connected to the first column 41 and the fourth column 44. The second horizontal member 22 is arranged between the second column 42 and the fourth column 44 and is connected to the second column 42 and the fourth column 44. In this embodiment, the roof frame structure 10 does not have the third horizontal member 23 and the fourth horizontal member 24.

[0147] According to the roof frame structure 10 of the present embodiment, the roof corner 4 is configured in a rectangle in plan view. And in plan view, columns are arranged at each vertex of the protruding roof corner 5. In this way, since the protruding corner is supported by four columns, the protruding corner is stabilized.

[0148] <Fourth Embodiment> Referring to FIG. 18, the roof frame structure 10 according to the third embodiment will be described. In the present embodiment, for the configurations common to the first embodiment, the same reference numerals as those in the configuration of the first embodiment are given, and the description of the overlapping configurations is omitted.

[0149] In the first embodiment, the roof frame structure 10 is applied to the framework of the protruding roof corner 5. On the other hand, in the present embodiment, the roof frame structure 10 is applied to the framework of the recessed roof corner 6. The differences from the first embodiment are as follows.

[0150] As shown in FIG. 14, the first horizontal member 21 is along the upper end of the first roof part 7A. The second horizontal member 22 is along the upper end of the second roof part 7B. In the first embodiment, in order to enlarge the opening of the outer wall, the third horizontal member 23 and the fourth horizontal member 24 having a smaller height dimension than the first horizontal member 21 and the second horizontal member 22 are provided. On the other hand, in the present embodiment, the third horizontal member 23 and the fourth horizontal member 24 are provided in order to enlarge the indoor opening.

[0151] <Modification Example> The above embodiments are examples of the forms that the roof frame structure 10 and the building 1 can take, and are not intended to limit the form. The roof frame structure 10 and the building 1 can take forms different from those exemplified in the above embodiments. Examples thereof are forms in which a part of the configuration of the embodiment is replaced, changed, or omitted, or forms in which a new configuration is added to the embodiment. Modification examples of the embodiment are shown below.

[0152] · The roof frame structure 10 can also be applied to the entrance roof (also called a canopy) having a protruding or recessed structure. · The roof frame structure 10 can also be applied to the roof of the second floor or the roof of a floor above the second floor.

[0153] ·In the roof frame structure 10, the first end 29A of the third gradient member 29 may be connected to the first gradient member 27 or the second gradient member 28 via a fitting. The second end 29B of the third gradient member 29 may be connected to the first cross member 21 or the second cross member 22 via a fitting.

[0154] This specification discloses the following technology. [Appendix 1] Appendix 1 is the roof frame structure of a building. The roof frame structure of the building is a roof frame structure that is the framework of the roof corner. The roof corner has a first roof part and a second roof part that intersects the first roof part. The roof frame structure of the building includes a first cross member along the lower end or upper end of the first roof part, a second cross member along the lower end or upper end of the second roof part, a first gradient member that inclines toward the first cross member and is orthogonal to the first cross member in plan view, a second gradient member that inclines toward the second cross member and is orthogonal to the second cross member in plan view, a first connecting member that connects the first cross member and the first gradient member, and a second connecting member that connects the second cross member and the second gradient member.

[0155] [Appendix 2] In the roof frame structure described in Appendix 1, the roof frame structure further includes a first column that supports the first gradient member, a second column that supports the second gradient member, and a third column that is disposed at the end of the intersection line where the first roof part and the second roof part intersect. The first gradient member is connected to the first column and the third column. The second gradient member is connected to the second column and the third column.

[0156] [Appendix 3] In the roof frame structure described in Supplementary Note 2, the roof frame structure further includes a fourth column disposed near a portion where the first horizontal frame member and the second horizontal frame member are orthogonal in plan view, a third horizontal frame member disposed parallel to the first horizontal frame member, and a fourth horizontal frame member disposed parallel to the second horizontal frame member. The third horizontal frame member is disposed between the first column and the fourth column and is connected to the first column and the fourth column. The fourth horizontal frame member is disposed between the second column and the fourth column and is connected to the second column and the fourth column. The second horizontal frame member is disposed between the second gradient member and the third horizontal frame member and is connected to the second gradient member and the third horizontal frame member. Alternatively, the first horizontal frame member may be disposed between the first gradient member and the fourth horizontal frame member and be connected to the first gradient member and the fourth horizontal frame member.

[0157] [Supplementary Note 4] In the roof frame structure described in Supplementary Note 2, the roof frame structure further includes a fourth column disposed at a portion where the first horizontal frame member and the second horizontal frame member are orthogonal. The first horizontal frame member is disposed between the first column and the fourth column and is connected to the first column and the fourth column. The second horizontal frame member is disposed between the second column and the fourth column and is connected to the second column and the fourth column.

[0158] [Supplementary Note 5] In the roof frame structure described in Supplementary Note 1, the roof frame structure further includes a third connecting member that connects the first horizontal frame member and the second horizontal frame member, and a fourth connecting member that connects the first gradient member and the second gradient member.

[0159] [Supplementary Note 6] In the roof frame structure described in Supplementary Note 5, the roof frame structure further includes a third gradient member along an intersection line where a plane along the first roof portion and a plane along the second roof portion intersect.

[0160] [Supplementary Note 7] In the roof frame structure described in Supplementary Note 6, the third gradient member is connected to the third connecting member and the fourth connecting member.

[0161] [Appendix 8] In the roof frame structure described in Appendix 7, the third gradient member is disposed between the first surface of the third connecting member and the second surface of the fourth connecting member facing the first surface. The first surface of the third connecting member is inclined upward. The second surface of the fourth connecting member is inclined upward.

[0162] [Appendix 9] In the roof frame structure described in Appendix 1, the first connecting member has a first end portion and a second end portion opposite to the first end portion. The second connecting member has a third end portion and a fourth end portion opposite to the third end portion. The first end portion of the first connecting member is connected to the first gradient member via a first fitting. The second end portion of the first connecting member is connected to the first horizontal member via a second fitting. The third end portion of the second connecting member is connected to the second gradient member via a third fitting. The fourth end portion of the second connecting member is connected to the second horizontal member via a fourth fitting.

[0163] [Appendix 10] In the roof frame structure described in Appendix 9, the first connecting member is disposed between the first fitting surface of the first fitting and the second fitting surface of the second fitting facing the first fitting surface. The first fitting surface of the first fitting is inclined upward. The second fitting surface of the second fitting is inclined upward.

[0164] [Appendix 11] In the roof frame structure described in Appendix 10, the second connecting member is disposed between the third fitting surface of the third fitting and the fourth fitting surface of the fourth fitting facing the third fitting surface. The third fitting surface of the third fitting is inclined upward. The fourth fitting surface of the fourth fitting is inclined upward.

[0165] [Appendix 12] Appendix 12 is a technology related to a building. The building of Appendix 12 includes the roof frame structure described in any one of Appendices 1 to 11.

Explanation of Signs

[0166] 1… Building, 4… Roof corner, 7A… First roof part, 7B… Second roof part, 7X… Lower end, 7Y… Lower end, 10… Roof structure, 21… First horizontal member, 22… Second horizontal member, 23… Third horizontal member, 24… Fourth horizontal member, 27… First gradient member, 27A… First end, 27B… Second end, 28… Second gradient member, 28A… Third end, 28B… Fourth end, 29… Third gradient member, 29A… First end, 29B… Second end, 31… First connecting member, 31A… First end, 31B… Second end, 32… Second connecting member, 32A… Third end, 32B… Fourth end, 33… Third connecting member, 33A… First end, 33B… Second end, 33C… First surface, 34… Fourth connecting member, 34A… Third end, 34B… Fourth end, 34C… Second surface, 41… First column, 42… Second column, 43… Third column, 44… Fourth column, 51… First fitting, 51A… First fitting surface, 52… Second fitting, 52A… Second fitting surface, 53… Third fitting, 53A… Third fitting surface, 54… Fourth fitting, 54A… Fourth fitting surface, 62A… Upper end, 62B… Lower end, 72A… Upper end, 72B… Lower end.

Claims

1. A roof frame structure which is a framework at a roof corner, wherein the roof corner has a first roof portion and a second roof portion intersecting the first roof portion, a first horizontal member along the lower end or upper end of the first roof portion, a second horizontal member along the lower end or upper end of the second roof portion, a first gradient member inclined toward the first horizontal member and orthogonal to the first horizontal member in plan view, a second gradient member inclined toward the second horizontal member and orthogonal to the second horizontal member in plan view, a first connecting member connecting the first horizontal member and the first gradient member, a second connecting member connecting the second horizontal member and the second gradient member, and the first connecting member and the second connecting member extend parallel to and are arranged to be inclined with respect to an intersection line where a plane along the first roof portion and a plane along the second roof portion intersect in plan view, the roof frame structure.

2. a first column supporting the first gradient member, a second column supporting the second gradient member, and a third column arranged at an end of an intersection line where the first roof portion and the second roof portion intersect, and the first gradient member is connected to the first column and the third column, the second gradient member is connected to the second column and the third column, the roof frame structure according to Claim 1.

3. further comprising a fourth column arranged at a portion where the first horizontal member and the second horizontal member are orthogonal, the first horizontal member is arranged between the first column and the fourth column and is connected to the first column and the fourth column, the second horizontal member is arranged between the second column and the fourth column and is connected to the second column and the fourth column, the roof frame structure according to Claim 2.

4. further comprising a third connecting member connecting the first horizontal member and the second horizontal member, and a fourth connecting member connecting the first gradient member and the second gradient member, the roof frame structure according to Claim 1.

5. further comprising a third gradient member along an intersection line where a plane along the first roof portion and a plane along the second roof portion intersect, the roof frame structure according to Claim 4.

6. the third gradient member is connected to the third connecting member and the fourth connecting member, the roof frame structure according to Claim 5.

7. the first connecting member has a first end portion and a second end portion opposite to the first end portion, the second connecting member has a third end portion and a fourth end portion opposite to the third end portion, The first end of the first connecting member is connected to the first gradient member via a first fitting, the second end of the first connecting member is connected to the first horizontal member via a second fitting, the third end of the second connecting member is connected to the second gradient member via a third fitting, the fourth end of the second connecting member is connected to the second horizontal member via a fourth fitting, The roof frame structure according to claim 1.

8. A roof frame structure that is the framework of a roof corner, wherein the roof corner has a first roof portion and a second roof portion that intersects the first roof portion, a first horizontal member along the lower or upper end of the first roof portion, a second horizontal member along the lower or upper end of the second roof portion, a first gradient member that inclines toward the first horizontal member and is orthogonal to the first horizontal member in plan view, a second gradient member that inclines toward the second horizontal member and is orthogonal to the second horizontal member in plan view, a first connecting member that connects the first horizontal member and the first gradient member, a second connecting member that connects the second horizontal member and the second gradient member, a first column that supports the first gradient member, a second column that supports the second gradient member, a third column disposed at an end of an intersection line where the first roof portion and the second roof portion intersect, a fourth column disposed near a portion where the first horizontal member and the second horizontal member are orthogonal to each other in plan view, a third horizontal member disposed parallel to the first horizontal member and a fourth horizontal member disposed parallel to the second horizontal member, the first gradient member is connected to the first column and the third column, the second gradient member is connected to the second column and the third column, the third horizontal member is disposed between the first column and the fourth column and is connected to the first column and the fourth column, the fourth horizontal member is disposed between the second column and the fourth column and is connected to the second column and the fourth column, the second horizontal member is disposed between the second gradient member and the third horizontal member and is connected to the second gradient member and the third horizontal member, or the first horizontal member is disposed between the first gradient member and the fourth horizontal member and is connected to the first gradient member and the fourth horizontal member, Roof frame structure.

9. A roof frame structure that is the framework of a roof corner, wherein the roof corner has a first roof portion and a second roof portion that intersects the first roof portion, a first horizontal member along the lower or upper end of the first roof portion, a second horizontal member along the lower or upper end of the second roof portion, A first gradient member that inclines toward the first horizontal member and is orthogonal to the first horizontal member in plan view; A second gradient member that inclines toward the second horizontal member and is orthogonal to the second horizontal member in plan view; A first connecting member that connects the first horizontal member and the first gradient member; A second connecting member that connects the second horizontal member and the second gradient member; A third connecting member that connects the first horizontal member and the second horizontal member; A fourth connecting member that connects the first gradient member and the second gradient member; A third gradient member along an intersection line where a surface along the first roof part and a surface along the second roof part intersect; and The third gradient member is connected to the third connecting member and the fourth connecting member; The third gradient member is disposed between a first surface of the third connecting member and a second surface of the fourth connecting member that faces the first surface; The first surface of the third connecting member inclines upward; The second surface of the fourth connecting member inclines upward; Roof frame structure.

10. A roof frame structure that is a framework of a roof corner, The roof corner has a first roof part and a second roof part that intersects the first roof part, A first horizontal member along the lower end or upper end of the first roof part; A second horizontal member along the lower end or upper end of the second roof part; A first gradient member that inclines toward the first horizontal member and is orthogonal to the first horizontal member in plan view; A second gradient member that inclines toward the second horizontal member and is orthogonal to the second horizontal member in plan view; A first connecting member that connects the first horizontal member and the first gradient member; A second connecting member that connects the second horizontal member and the second gradient member; The first connecting member has a first end and a second end opposite to the first end; The second connecting member has a third end and a fourth end opposite to the third end; The first end of the first connecting member is connected to the first gradient member via a first fitting; The second end of the first connecting member is connected to the first horizontal member via a second fitting; The third end of the second connecting member is connected to the second gradient member via a third fitting; The fourth end of the second connecting member is connected to the second horizontal member via a fourth fitting; The first connecting member is disposed between a first fitting surface of the first fitting and a second fitting surface of the second fitting that faces the first fitting surface; The first fitting surface of the first fitting inclines upward; The second fitting surface of the second fitting inclines upward. Roof structure.

11. The second connecting member is disposed between the third fitting surface of the third fitting and the fourth fitting surface facing the third fitting surface in the fourth fitting. The third fitting surface of the third fitting inclines upward. The fourth fitting surface of the fourth fitting inclines upward. The roof structure according to claim 10.

12. A building comprising the roof structure according to any one of claims 1 to 11.

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