Roof units, and construction methods for buildings and roofs.

Abstract

This invention provides a roof unit that allows for easy positioning, as well as a construction method for buildings and roofs. [Solution] The roof unit 20 is a unit fixed to the roof structure. The roof unit 20 comprises a frame 21 having a plurality of rafters 26, a roof base material fixed to the frame 21, and a positioning connection part 24 provided on the frame 21 that connects the roof structure and the frame 21. The positioning connection part 24 has a connecting shaft part 25 that is inserted into an insertion hole 6 of the roof structure.

Description

Technical Field

[0001] The present disclosure relates to a roof unit, a building, and a method for constructing a roof.

Background Art

[0002] A construction method of attaching a pre-assembled roof unit (roof panel in the same document) to a roof structure is known (for example, Patent Document 1). The roof unit of Patent Document 1 has a fixing member for fixing the roof unit to the roof structure. The roof unit is fixed to the roof structure via the fixing member.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] Roof construction is performed in the following procedure. The roof unit is lifted above the roof structure, and from that state, the roof unit is lowered and positioned at a predetermined position of the roof structure. After that, the roof unit is fixed. In such a procedure, it takes time to position the roof unit at a predetermined position of the roof structure.

Means for Solving the Problems

[0005] (1) The roof unit for solving the above problems is a roof unit fixed to a roof structure, and includes a frame having a plurality of rafters, a roof base material fixed to the frame, and a positioning connection portion provided on the frame for connecting the roof structure and the frame. The positioning connection portion has a coupling shaft portion inserted into an insertion hole of the roof structure.

[0006] With this configuration, the connecting shaft portion of the roof unit is inserted into the insertion hole of the roof structure, allowing the roof unit to be easily positioned relative to the roof structure.

[0007] (2) In the roof unit described in (1) above, the positioning connection portion is provided with a first connection portion, the first connection portion comprising a first rafter fixing portion fixed to the upper end of the rafter, a second rafter fixing portion configured to allow the rafter of another roof unit to be fixed, a base portion connected to the first rafter fixing portion and the second rafter fixing portion and having a lower surface, and a first connecting shaft portion as the connecting shaft portion, which extends downward from the lower surface and is inserted into the insertion hole of the roof structure. With this configuration, the roof unit can be easily positioned relative to the roof structure near the upper end of the roof unit.

[0008] (3) In the roof unit described in (1) above, the positioning connection portion is provided with a second connection portion, the second connection portion having a rafter fixing portion fixed to the rafter at a position below the upper end, a base portion connected to the rafter fixing portion and having a lower surface, and a second connecting shaft portion as the connecting shaft portion, which extends downward from the lower surface and is inserted into the insertion hole of the roof structure. With this configuration, the roof unit can be easily positioned relative to the roof structure at a position below the upper end of the rafter.

[0009] (4) The roof unit described in (2) or (3) above further comprises a third connecting portion, the third connecting portion comprising a rafter fixing portion fixed to the rafter, a base portion connected to the rafter fixing portion and having a lower surface, and a connecting plate portion extending downward from the lower surface and positioned on the side surface of the structural shaft member of the roof structure. With this configuration, the third connecting portion can be fixed to the side surface of the structural shaft member.

[0010] (5) The roof unit described in (3) above further comprises a fourth connecting portion, the fourth connecting portion comprising: a first rafter fixing portion fixed to the upper end of the rafter; a second rafter fixing portion configured to allow the rafter of another roof unit to be fixed; a base portion connected to the first rafter fixing portion and the second rafter fixing portion and having a lower surface; a first connecting plate portion extending downward from the lower surface and positioned on one side of the structural shaft member of the roof structure; and a second connecting plate portion extending downward from the lower surface and positioned on the other side of the structural shaft member. With this configuration, since the first connecting plate portion is positioned on one side of the structural shaft member and the second connecting plate portion is positioned on one side of the structural shaft member, the roof unit can be engaged with the structural shaft member of the roof structure near the upper end of the roof unit.

[0011] (6) The roof unit described in (2) or (3) above further comprises a fifth connecting portion, the fifth connecting portion comprising a rafter fixing portion fixed to the rafter and an engaging portion extending from the rafter fixing portion and engaging with the ridge-side receiving surface of a projection provided on the sloped member of the roof structure. With this configuration, the fifth connecting portion can be easily engaged with the projection of the sloped member.

[0012] (7) The roof unit described in (2) or (3) above, further comprising a sixth connecting portion, the sixth connecting portion comprising: a rafter fixing portion fixed to the rafter; an engaging portion extending downward from the rafter fixing portion and engaging with the ridge-side receiving surface of a projection provided on the sloped member of the roof structure; a lower surface portion extending from the engaging portion and contacting the upper surface of the sloped member; and a connecting plate portion extending from the lower surface portion and positioned on the side surface of the sloped member. With this configuration, the sixth connecting portion can be fixed to the side surface of the sloped member with the engaging portion of the sixth connecting portion engaged with the projection.

[0013] (8) A building that solves the problem, comprising a roof structure and a roof unit as described in any one of (1) to (7) above, wherein the roof unit is fixed to the roof structure. With this configuration, the displacement of the roof unit relative to the roof structure can be suppressed during construction, so that the displacement of the roof unit relative to the roof structure is small.

[0014] (9) A method for constructing a building roof that solves the problem, comprising: a first step of raising a roof unit described in any one of (1) to (7) above above above a roof structure; a second step of positioning the roof unit in a predetermined position relative to the roof structure by inserting the connecting shaft portion of the roof unit into the insertion hole of the roof structure; and a third step of fixing the roof unit to the roof structure. With this configuration, the roof unit can be easily positioned relative to the roof structure. [Effects of the Invention]

[0015] According to the roof unit of this disclosure, the roof unit can be easily positioned relative to the roof structure. According to the building according to this disclosure, the misalignment of the roof unit relative to the roof structure can be reduced. According to the roof construction method of this disclosure, the roof unit can be easily positioned relative to the roof structure. [Brief explanation of the drawing]

[0016] [Figure 1] This is a schematic diagram of a building according to the first embodiment. [Figure 2] This is a perspective view of the roof of the building according to the first embodiment. [Figure 3] This is a perspective view of the first connection portion of the first embodiment. [Figure 4] This diagram shows the connection between the first connecting part and the ridge beam in the first embodiment. [Figure 5] This diagram shows the connection between the second connecting section and the intermediate horizontal member in the first embodiment. [Figure 6] This is a perspective view showing how the roof unit is attached to the roof structure in the first embodiment. [Figure 7] This figure shows the connection between the third connecting section and the intermediate horizontal member in the second embodiment. [Figure 8] This figure shows the connection between the third connecting section and the intermediate horizontal member in the second embodiment. [Figure 9]It is a diagram showing how the fourth connecting part and the ridge beam are joined in the third embodiment. [Figure 10] It is a diagram showing how the fourth connecting part and the ridge beam are joined in the third embodiment. [Figure 11] It is a diagram showing how the fifth connecting part and the gradient member are joined in the fourth embodiment. [Figure 12] It is a diagram showing how the fifth connecting part and the gradient member are joined in the fourth embodiment. [Figure 13] It is a diagram showing how the sixth connecting part and the gradient member are joined in the fifth embodiment. [Figure 14] It is a cross-sectional view taken along D14 - D14 of FIG. 13. [Figure 15] It is a diagram showing how the sixth connecting part and the gradient member are joined in the fifth embodiment. [Figure 16] It is a cross-sectional view taken along D16 - D16 of FIG. 15.

Modes for Carrying Out the Invention

[0017] <First Embodiment> Referring to FIGS. 1 to 6, the construction method of the building 1, and the roof unit 20 and the roof 2 will be described. In FIGS. 4 and 5, the illustration of the roof base material 22 is omitted.

[0018] As shown in FIGS. 1 and 2, the building 1 includes a building body 3 and a roof unit 20. The building body 3 includes a building body main body 4 and a roof structure 5 provided on the building body main body 4. The roof structure 5 is assembled integrally with the building body main body 4. The roof structure 5 is also called a small house assembly.

[0019] The roof 2 is provided on the roof structure 5. The roof 2 comprises a plurality of roof units 20. The roof units 20 are framework units of the roof 2 provided on the roof structure 5. The roof units 20 constitute a part of the entire roof 2. The roof units 20 are configured as a whole in a plate-like shape. In the case of a gable roof, the roof 2 is formed by arranging at least two roof units 20 so as to intersect each other at the top.

[0020] In this embodiment, the roof structure 5 is composed of structural axis members 10. The structural axis members 10 include a ridge beam 11, a central support 12 (see Figure 4), an intermediate support 13, an intermediate horizontal member 14, a roof edge horizontal member 15, and an eaves horizontal member 16.

[0021] The ridge beam 11 is positioned along the ridge of the roof 2. The ridge beam 11 is supported by the central post 12 (see Figure 4). The central post 12 extends vertically. The central post 12 is also called the main post. The intermediate horizontal member 14 extends parallel to the ridge beam 11. It is positioned lower than the ridge beam 11. The intermediate horizontal member 14 is supported by the intermediate post 13. The intermediate horizontal member 14 is also called the purlin. The intermediate post 13 extends vertically. The intermediate post 13 is shorter than the central post 12.

[0022] The eaves-side horizontal member 16 extends parallel to the intermediate horizontal member 14. It is positioned lower than the intermediate horizontal member 14 and close to the eaves of the roof 2. Viewed from the first direction DX along the ridge beam 11, the eaves-side horizontal member 16 is positioned on a straight line passing through the center point of the ridge beam 11 and the center point of the intermediate horizontal member 14. The central support 12 and the intermediate support 13 are erected on the roof edge-side horizontal member 15 (also called the roof beam).

[0023] [Roof Unit] The roof unit 20 is fixed to the roof structure 5. Specifically, the roof unit 20 is fixed to the ridge beam 11, the intermediate horizontal member 14, and the eave-side horizontal member 16.

[0024] The roof unit 20 comprises a frame 21, a roof underlayment 22 fixed to the frame 21, and a positioning connection part 24 as a connection part 23. The roof underlayment 22 supports the roofing material.

[0025] The roof unit 20 has a plurality of connection parts 23. The connection parts 23 connect the roof unit 20 to the roof structure 5. All of the plurality of connection parts 23 may be positioning connection parts 24. Some of the plurality of connection parts 23 may be positioning connection parts 24. In this case, the connection parts 23 other than the positioning connection parts 24 have a different structure from the positioning connection parts 24. In this embodiment, the roof unit 20 has three positioning connection parts 24.

[0026] The frame 21 has a plurality of rafters 26. The frame 21 comprises a plurality of rafters 26 arranged parallel to each other, and a lower connecting member 27 that connects the lower ends of the plurality of rafters 26. The plurality of rafters 26 are arranged in a first direction DX. The lower connecting member 27 is fixed to the lower end face of each of the plurality of rafters 26. The lower connecting member 27 constitutes the eaves. The lower connecting member 27 may be equipped with a drip edge. The frame 21 may also be equipped with an upper connecting member. The upper connecting member is fixed to the upper end face of each of the plurality of rafters 26.

[0027] [Positioning connection part] The positioning connection section 24 connects the roof structure 5 and the frame 21. Furthermore, the positioning connection section 24 positions the roof unit 20 relative to the roof structure 5.

[0028] The positioning connection portion 24 is provided on the frame 21. The positioning connection portion 24 is arranged to span multiple rafters 26. Specifically, the positioning connection portion 24 extends perpendicularly to the multiple rafters 26 when viewed from a direction perpendicular to the roof surface of the roof unit 20. The positioning connection portion 24 is fixed to the lower surface of the rafters 26. The positioning connection portion 24 is arranged parallel to the lower connecting member 27. In this embodiment, the positioning connection portion 24 is provided on the frame 21 near the upper end, near the lower end, and near the midpoint between the upper and lower ends.

[0029] One of the multiple positioning connection parts 24 is fixed to the multiple rafters 26 so that when the roof unit 20 is placed on the roof structure 5, it is positioned on the ridge beam 11. Another of the multiple positioning connection parts 24 is fixed to the multiple rafters 26 so that when the roof unit 20 is placed on the roof structure 5, it is positioned on the intermediate horizontal member 14. Another of the multiple positioning connection parts 24 is fixed to the multiple rafters 26 so that when the roof unit 20 is placed on the roof structure 5, it is positioned on the eave-side horizontal member 16. Hereafter, the intermediate horizontal member 14 and the eave-side horizontal member 16 will be collectively referred to simply as the roof horizontal member 17.

[0030] The positioning connection portion 24 has a coupling shaft portion 25. The coupling shaft portion 25 is configured to be inserted into the insertion hole 6 of the roof structure 5.

[0031] In this embodiment, the roof unit 20 includes a first connection portion 31 as a positioning connection portion 24. The roof unit 20 further includes two second connection portions 41 as positioning connection portions 24.

[0032] [First connection section] The first connecting section 31 will be described with reference to Figures 3 and 4. The first connecting section 31 connects the frame 21 and the ridge beam 11. The first connecting section 31 comprises a first rafter fixing section 32, a second rafter fixing section 33, a base section 34, and a first connecting shaft section 37.

[0033] In the first connecting portion 31, the portion having the first rafter fixing portion 32, the second rafter fixing portion 33, and the base portion 34 is integrally formed from steel plate. The first connecting shaft portion 37 is made of steel pipe. The first connecting shaft portion 37 is fixed to the base portion 34 by welding.

[0034] The first rafter fixing part 32 is fixed to the lower surface of the rafter 26 at the upper end of the rafter 26 of the roof unit 20. The first rafter fixing part 32 is inclined to follow the lower surface of the rafter 26. The second rafter fixing part 33 is configured to fix the upper end of the rafter 26 of the other roof unit 20. The other roof unit 20 is a unit located on the opposite side of the ridge beam 11 from the side where the roof unit 20 having the first rafter fixing part 32 is located. The upper end of the second rafter fixing part 33 is connected to the upper end of the first rafter fixing part 32. The second rafter fixing part 33 is inclined to follow the lower surface of the rafter 26 of the other roof unit 20. The inclination angle of the second rafter fixing part 33 with respect to a line along the vertical direction DZ is equal to the inclination angle of the first rafter fixing part 32 with respect to a line along the vertical direction DZ.

[0035] The base portion 34 is connected to the first rafter fixing portion 32 and the second rafter fixing portion 33. The base portion 34 also has a lower surface. The base portion 34 extends horizontally so as to rest on the upper surface of the ridge beam 11. One end of the base portion 34 in the width direction DY is connected to the lower end of the first rafter fixing portion 32 via the first rising portion 35. The other end of the base portion 34 in the width direction DY is connected to the lower end of the second rafter fixing portion 33 via the second rising portion 36. The first connecting shaft portion 37 extends downward from the lower surface of the base portion 34. In one example, the first connecting shaft portion 37 extends downward from approximately the middle of the width direction DY on the lower surface of the base portion 34. Multiple first connecting shaft portions 37 are provided on the base portion 34.

[0036] The first connecting shaft portion 37 is configured to be inserted into the insertion hole 6 of the roof structure 5. In this embodiment, the first connecting shaft portion 37 is inserted into the insertion hole 6 that extends vertically DZ from the upper surface of the ridge beam 11.

[0037] The first connecting shaft portion 37 is provided with an axial hole 25X through which a drift pin is inserted. The axial hole 25X penetrates the first connecting shaft portion 37 so as to be perpendicular to the axial direction of the first connecting shaft portion 37. When the first connecting shaft portion 37 is inserted through the insertion hole 6 of the ridge beam 11, the drift pin is inserted through the lateral hole 19 provided in the ridge beam 11 and the axial hole 25X of the first connecting shaft portion 37. In this way, the first connecting shaft portion 37 is connected to the ridge beam 11 by the drift pin.

[0038] [Second connection point] The second connection section 41 will be described with reference to Figure 5. As described above, the roof unit 20 has two second connection sections 41. One of the two second connection sections 41 connects the frame 21 to the intermediate horizontal member 14. The other of the two second connection sections 41 connects the frame 21 to the eaves horizontal member 16. Figure 5 shows how the second connection section 41 and the intermediate horizontal member 14 are connected.

[0039] The second connecting section 41 comprises a rafter fixing section 42, a base section 43, and a second connecting shaft section 44. In the second connecting section 41, the portion having the rafter fixing section 42 and the base section 43 is integrally formed from steel plate. The second connecting shaft section 44 is made of steel pipe. The second connecting shaft section 44 is fixed to the base section 43 by welding.

[0040] The rafter fixing portion 42 is fixed to the rafter 26 at a position below the upper end. The rafter fixing portion 42 is fixed to the lower surface of the rafter 26 at a predetermined position between the upper and lower ends of the rafter 26 of the roof unit 20. The rafter fixing portion 42 is inclined to follow the lower surface of the rafter 26.

[0041] The base portion 43 is connected to the rafter fixing portion 42. The base portion 43 also has a lower surface. The base portion 43 is configured to extend horizontally so as to rest on the upper surface of the eaves-side horizontal member 16 or the intermediate horizontal member 14. The base portion 43 is connected to the lower end of the rafter fixing portion 42 via the rising portion 45.

[0042] The second connecting shaft portion 44 extends downward from the lower surface of the base portion 43. In one example, the second connecting shaft portion 44 extends downward from near the center of the width direction DY on the lower surface of the base portion 43. The second connecting shaft portion 44 is configured to be inserted into the insertion hole 6 of the roof structure 5. The connection structure between the second connecting shaft portion 44 and the roof horizontal member 17 is the same as the connection structure between the first connecting shaft portion 37 and the ridge beam 11.

[0043] The construction method for roof 2 will be explained with reference to Figure 6. The construction method for roof 2 is carried out when the structural frame 3 of building 1 is assembled. The construction method for roof 2 includes steps 1 to 3.

[0044] In the first step, the roof unit 20 is raised above the roof structure 5. For example, the roof unit 20 is lifted onto the roof structure 5 by a crane. Four fittings 99 are attached to the top surface of the roof unit 20, to which wire ropes 100 are hooked. The wire ropes 100 are attached to the fittings 99 and the crane's suspension part 110. In this state, the roof unit 20 is lifted by the crane. The roof unit 20 is temporarily suspended from the crane and remains stationary at a predetermined position above the roof structure 5. Then, the roof unit 20 is slowly lowered onto the roof structure 5.

[0045] In the second step, the roof unit 20 is positioned in a predetermined location relative to the roof structure 5 by inserting the connecting shaft portion 25 of the roof unit 20 into the insertion hole 6 of the roof structure 5.

[0046] In the second step, the roof unit 20 is lowered at the same inclination as when it was placed on the roof structure 5. At this time, the first connecting shaft portion 37 and the second connecting shaft portion 44 are positioned along the vertical direction DZ. The first connecting shaft portion 37 of the first connection portion 31 of the roof unit 20 is positioned directly above the insertion hole 6 of the ridge beam 11. The second connecting shaft portion 44 of the second connection portion 41, located in the middle of the roof unit 20, is positioned directly above the insertion hole 6 of the intermediate horizontal member 14. The second connecting shaft portion 44 of the second connection portion 41 near the lower end of the roof unit 20 is positioned directly above the insertion hole 6 of the eaves horizontal member 16. Then, the roof unit 20 moves downward while maintaining the aforementioned inclination. When the tips of the first connecting shaft portion 37 of the first connecting portion 31 and the second connecting shaft portion 44 of the second connecting portion 41 engage with the insertion hole 6, this engagement suppresses the swaying of the roof structure 5 compared to the suspended state of the roof unit 20. The worker inserts the first connecting shaft portion 37 and the second connecting shaft portion 44 into the insertion hole 6 when the tips of the first connecting shaft portion 37 of the first connecting portion 31 and the second connecting shaft portion 44 of the second connecting portion 41 engage with the insertion hole 6.

[0047] In the third step, the roof unit 20 is fixed to the roof structure 5. When the first connecting shaft portion 37 of the first connecting portion 31 is inserted into the insertion hole 6, the shaft hole 25X of the first connecting shaft portion 37 of the first connecting portion 31 and the lateral hole 19 of the ridge beam 11 are aligned, so the drift pin is inserted into the shaft hole 25X and the lateral hole 19.

[0048] Similarly, when the second connecting shaft portion 44 of the second connecting portion 41 is inserted into the insertion hole 6, the shaft hole 25X of the second connecting shaft portion 44 of the second connecting portion 41 aligns with the lateral hole 19 of the roof horizontal member 17, allowing the drift pin to be inserted through the shaft hole 25X and the lateral hole 19. In this manner, the roof unit 20 is fixed to the roof structure 5.

[0049] [Operation of this embodiment] The roof unit 20 includes a positioning connection portion 24 that connects the roof structure 5 and the frame 21. The positioning connection portion 24 has a coupling shaft portion 25. The coupling shaft portion 25 is inserted into an insertion hole 6 of the roof structure 5. The insertion hole 6 extends in the vertical direction DZ from the upper surface of the structural shaft member 10. The insertion hole 6 is provided at a predetermined position in the structural shaft member 10 of the roof structure 5. By inserting the coupling shaft portion 25 into the insertion hole 6, the coupling shaft portion 25 is positioned at a predetermined position relative to the roof structure 5. Consequently, the roof unit 20 is positioned at a predetermined position relative to the roof structure 5. Therefore, a worker can position the roof unit 20 at a predetermined position relative to the roof structure 5 by a simple operation such as aligning the coupling shaft portion 25 of the roof unit 20 with the insertion hole 6.

[0050] Conventionally, it was necessary to manually mark the roof structure 5 to indicate the position where the roof unit 20 would be placed. In contrast, according to this embodiment, as described above, the roof unit 20 can be easily positioned relative to the roof structure 5 by aligning the connecting shaft portion 25 with the insertion hole 6. Furthermore, since the connecting shaft portion 25 is connected to the structural shaft member 10, the roof unit 20 can be fixed to the roof structure 5 without using other fittings.

[0051] [Effects of this embodiment] (1) The roof unit 20 comprises a frame 21, a roof underlayment 22 fixed to the frame 21, and a positioning connection portion 24 connecting the roof structure 5 and the frame 21. The positioning connection portion 24 has a connecting shaft portion 25 that is inserted into the insertion hole 6 of the roof structure 5. With this configuration, the connecting shaft portion 25 of the roof unit 20 is inserted into the insertion hole 6 of the roof structure 5, so the roof unit 20 can be easily positioned relative to the roof structure 5.

[0052] (2) The roof unit 20 is provided with a first connecting portion 31 as a positioning connecting portion 24. The first connecting portion 31 includes a first rafter fixing portion 32 fixed to the upper end of the rafter 26, a second rafter fixing portion 33, a base portion 34, and a first connecting shaft portion 37. The first connecting shaft portion 37 extends downward from the lower surface of the base portion 34 and is inserted into the insertion hole 6 of the roof structure 5. With this configuration, the roof unit 20 can be easily positioned relative to the roof structure 5 near the upper end of the roof unit 20.

[0053] (3) The roof unit 20 is provided with a second connecting portion 41 as a positioning connecting portion 24. The second connecting portion 41 has a rafter fixing portion 42 fixed to the rafter 26 at a position below the upper end, a base portion 43, and a second connecting shaft portion 44. The second connecting shaft portion 44 extends downward from the lower surface and is inserted into the insertion hole 6 of the roof structure 5. With this configuration, the roof unit 20 can be easily positioned relative to the roof structure 5 at a position below the upper end of the rafter 26.

[0054] (4) The building 1 comprises a roof structure 5 and a roof unit 20 having the configuration described above. The roof unit 20 is fixed to the roof structure 5. With this configuration, the displacement of the roof unit 20 relative to the roof structure 5 during construction can be suppressed, so the displacement of the roof unit 20 relative to the roof structure 5 is small.

[0055] (5) A method for constructing a roof 2, comprising the first to third steps. In the first step, the roof unit 20 is raised above the roof structure 5. In the second step, the roof unit 20 is positioned in a predetermined location relative to the roof structure 5 by inserting the connecting shaft portion 25 of the roof unit 20 into the insertion hole 6 of the roof structure 5. In the third step, the roof unit 20 is fixed to the roof structure 5. With this configuration, the roof unit 20 can be easily positioned relative to the roof structure 5.

[0056] <Second Embodiment> The roof unit 20 according to the second embodiment will be described with reference to Figures 7 and 8. Note that the roof underlayment material 22 is not shown in Figures 7 and 8. In this embodiment, components common to the first embodiment are denoted by the same reference numerals as in the first embodiment, and the description of redundant components is omitted.

[0057] The roof unit 20 includes a third connecting portion 51. The third connecting portion 51 is provided on the rafter 26 in place of the second connecting portion 41 in the roof unit 20 of the first embodiment. The connecting portion 23 provided at the upper end of the roof unit 20 is the first connecting portion 31, as in the first embodiment. The third connecting portion 51 will be described below.

[0058] As shown in Figure 7, the third connecting portion 51 comprises a rafter fixing portion 52, a base portion 53, and a connecting plate portion 54. The configuration of the rafter fixing portion 52 and the base portion 53 is substantially the same as that of the rafter fixing portion 42 and the base portion 43 of the second connecting portion 41 shown in the first embodiment. The connecting plate portion 54 will be described below.

[0059] The connecting plate portion 54 extends downward from the lower surface of the base portion 53. Specifically, the connecting plate portion 54 extends downward from the end of the lower surface of the base portion 53 opposite to the end where the rising portion 55 is provided. The connecting plate portion 54 is configured to be the same length as the base portion 53 in the first direction DX. The connecting plate portions 54 may be provided at intervals along the longitudinal direction of the base portion 53.

[0060] As shown in Figure 8, the connecting plate portion 54 is positioned on the side surface of the roof horizontal member 17, which serves as the structural axial member 10. The connecting plate portion 54 is fixed to the side surface of the roof horizontal member 17 with screws 91 or bolts.

[0061] [Effects of this embodiment] The roof unit 20 includes a third connecting portion 51. The third connecting portion 51 comprises a rafter fixing portion 52 fixed to the rafter 26, a base portion 53, and a connecting plate portion 54. The connecting plate portion 54 extends downward from the lower surface of the base portion 53 and is positioned on the side surface of the structural shaft member 10 of the roof structure 5. With this configuration, the third connecting portion 51 can be fixed to the side surface of the structural shaft member 10.

[0062] <Third Embodiment> The roof unit 20 according to the third embodiment will be described with reference to Figures 9 and 10. Note that the roof underlayment material 22 is not shown in Figures 9 and 10. In this embodiment, components common to the first embodiment are denoted by the same reference numerals as in the first embodiment, and the description of redundant components is omitted.

[0063] The roof unit 20 includes a fourth connecting portion 61. The fourth connecting portion 61 is provided on the rafter 26 in place of the first connecting portion 31 in the roof unit 20 of the first embodiment. The connecting portion 23 provided between the upper and lower ends of the roof unit 20 is the second connecting portion 41, as in the first embodiment. The fourth connecting portion 61 will be described below.

[0064] As shown in Figure 9, the fourth connecting portion 61 comprises a first rafter fixing portion 62, a second rafter fixing portion 63, a base portion 64, a first connecting plate portion 65, and a second connecting plate portion 66. One end of the base portion 64 in the width direction DY is connected to the lower end of the first rafter fixing portion 62 via the first rising portion 67. The other end of the base portion 64 in the width direction DY is connected to the lower end of the second rafter fixing portion 63 via the second rising portion 68.

[0065] The configurations of the first rafter fixing section 62, the second rafter fixing section 63, and the base section 64 are substantially the same as those of the first rafter fixing section 32, the second rafter fixing section 33, and the base section 34 of the first connecting section 31 shown in the first embodiment. The first connecting plate section 65 and the second connecting plate section 66 will be described below.

[0066] The first connecting plate portion 65 extends downward from one end in the width direction DY on the lower surface of the base portion 64. The first connecting plate portion 65 is configured to have the same length as the base portion 64 in the first direction DX. The first connecting plate portion 65 may be provided at intervals along the longitudinal direction of the base portion 64.

[0067] The second connecting plate portion 66 extends downward from the other end in the width direction DY on the lower surface of the base portion 64. The other end is the end on the lower surface of the base portion 64 opposite to the end where the first connecting plate portion 65 is provided. The second connecting plate portion 66 is configured to be the same length as the base portion 64 in the first direction DX. The second connecting plate portion 66 may be provided at intervals along the longitudinal direction of the base portion 64.

[0068] The first connecting plate portion 65 is positioned on one side of the ridge beam 11, which serves as a structural axial member 10. The second connecting plate portion 66 is positioned on the other side of the ridge beam 11, which serves as a structural axial member 10. The first connecting plate portion 65 and the second connecting plate portion 66 are positioned so as to sandwich the ridge beam 11.

[0069] As shown in Figure 10, the first connecting plate portion 65 and the second connecting plate portion 66 are fixed to the side surface of the ridge beam 11 with screws 91 or bolts, respectively.

[0070] [Effects of this embodiment] The roof unit 20 further comprises a fourth connecting portion 61. The fourth connecting portion 61 comprises a first rafter fixing portion 62, a second rafter fixing portion 63, a base portion 64, a first connecting plate portion 65, and a second connecting plate portion 66. The first connecting plate portion 65 extends downward from one end of the lower surface of the base portion 64 and is positioned on one side of the structural shaft member 10 of the roof structure 5. The second connecting plate portion 66 extends downward from the other end of the lower surface of the base portion 64 and is positioned on the other side of the structural shaft member 10.

[0071] With this configuration, the first connecting plate portion 65 is positioned on one side of the structural shaft member 10, and the second connecting plate portion 66 is also positioned on the other side of the structural shaft member 10, so that the roof unit 20 can be engaged with the structural shaft member 10 of the roof structure 5 near the upper end of the roof unit 20.

[0072] <Fourth Embodiment> The roof unit 20 according to the fourth embodiment will be described with reference to Figures 11 and 12. Note that the roof underlayment material 22 is not shown in Figures 11 and 12. In this embodiment, components common to the first embodiment are denoted by the same reference numerals as in the first embodiment, and the description of redundant components is omitted.

[0073] The roof unit 20 of this embodiment is configured to be applicable to a roof structure 5 having a sloping member 8. The sloping member 8 is also called a rising beam.

[0074] The roof unit 20 includes a fifth connecting portion 71. The fifth connecting portion 71 is provided on the rafter 26 in place of the second connecting portion 41 in the roof unit 20 of the first embodiment. The connecting portion 23 provided at the upper end of the roof unit 20 is the first connecting portion 31, as in the first embodiment. The fifth connecting portion 71 will be described below.

[0075] As shown in Figure 11, the fifth connection portion 71 includes a rafter fixing portion 72 fixed to the rafter 26 and an engaging portion 73. The configuration of the rafter fixing portion 72 is substantially the same as that of the rafter fixing portion 42 of the second connection portion 41 shown in the first embodiment. The engaging portion 73 will be described below.

[0076] The engaging portion 73 extends from the rafter fixing portion 72. Specifically, the engaging portion 73 extends from the lower end of the rafter fixing portion 72. The engaging portion 73 extends diagonally downward so as to be perpendicular to the rafter fixing portion 72, which extends along the lower surface of the rafter 26. The engaging portion 73 has an engaging surface 73X. The engaging surface 73X is oriented in the same direction as the first inclination direction DS1 from the upper end to the lower end of the rafter 26.

[0077] The engaging portion 73 engages with the ridge-side receiving surface 9X of the projection 9 provided on the sloped member 8 of the roof structure 5. The projection 9 provided on the sloped member 8 protrudes from the upper surface of the sloped member 8. The projection 9 is made of an L-shaped bracket. The ridge-side receiving surface 9X of the projection 9 receives the engaging portion 73. The ridge-side receiving surface 9X is configured to contact the engaging surface 73X of the engaging portion 73. The ridge-side receiving surface 9X is oriented in the same direction as the second inclination direction DS2 from the lower end to the upper end of the sloped member 8.

[0078] As shown in Figure 12, the engaging portion 73 of the fifth connecting portion 71 is fixed to the protruding portion 9 of the slope member 8 with screws or bolts 92, while overlapping the ridge-side receiving surface 9X of the protruding portion 9 of the slope member 8.

[0079] The fifth connecting portion 71 allows the engaging portion 73 to come into contact with the protruding portion 9 of the slope member 8 while the roof unit 20 is suspended. By bringing the engaging portion 73 into contact with the protruding portion 9 of the slope member 8, the roof unit 20 can be temporarily placed on the roof structure 5. This makes it easier to insert the first connecting shaft portion 37 of the first connecting portion 31 of the roof unit 20 into the insertion hole 6 of the ridge beam 11.

[0080] [Effects of this embodiment] The roof unit 20 includes a fifth connecting portion 71. The fifth connecting portion 71 includes a rafter fixing portion 72 fixed to the rafter 26 and an engaging portion 73. The engaging portion 73 engages with the ridge-side receiving surface 9X of the projection 9 of the roof structure 5. With this configuration, the fifth connecting portion 71 can be easily engaged with the projection 9 of the slope member 8.

[0081] <Fifth Embodiment> The roof unit 20 according to the fifth embodiment will be described with reference to Figures 13 to 16. Note that the roof underlayment material 22 is not shown in Figures 13 to 16. In this embodiment, components common to the first embodiment are denoted by the same reference numerals as in the first embodiment, and the description of redundant components is omitted.

[0082] The roof unit 20 of this embodiment is configured to be applicable to a roof structure 5 having a sloping member 8. The sloping member 8 is also called a rising beam.

[0083] The roof unit 20 includes a sixth connecting portion 81. The sixth connecting portion 81 is provided on the rafter 26 in place of the second connecting portion 41 in the roof unit 20 of the first embodiment. The connecting portion 23 provided at the upper end of the roof unit 20 is the first connecting portion 31, as in the first embodiment. The sixth connecting portion 81 will be described below.

[0084] As shown in Figures 13 and 14, the sixth connecting portion 81 comprises a rafter fixing portion 82 fixed to the rafter 26, an engaging portion 83, a lower surface portion 84, and a connecting plate portion 85. The configuration of the rafter fixing portion 82 is substantially the same as that of the rafter fixing portion 42 of the second connecting portion 41 shown in the first embodiment. The configurations other than the rafter fixing portion 82 will be described below.

[0085] The engaging portion 83 extends downward from the rafter fixing portion 82. Specifically, the engaging portion 83 extends from the side end of the rafter fixing portion 82 (see Figure 14). The engaging portion 83 extends diagonally downward so as to be perpendicular to the rafter fixing portion 82. The engaging portion 83 has an engaging end 83X. In one example, the engaging portion 83 is configured in a plate shape. The engaging end 83X is the end located on the lower side of the engaging portion 83.

[0086] The engaging portion 83 engages with the ridge-side receiving surface 9X of the projection 9 provided on the sloped member 8 of the roof structure 5. The projection 9 is made of an L-shaped bracket. The projection 9 provided on the sloped member 8 protrudes from the upper surface of the sloped member 8. The ridge-side receiving surface 9X of the projection 9 receives the engaging portion 83. The ridge-side receiving surface 9X is configured to contact the engaging end 83X of the engaging portion 83. The ridge-side receiving surface 9X is oriented in the same direction as the second inclination direction DS2 from the lower end to the upper end of the sloped member 8.

[0087] The lower portion 84 is configured to extend from the engaging portion 83 and contact the upper surface of the gradient member 8. The connecting plate portion 85 extends from the lower portion 84 and is positioned on the side surface of the gradient member 8. Specifically, the connecting plate portion 85 extends downward from the side end of the lower portion 84.

[0088] As shown in Figures 15 and 16, the connecting plate portion 85 is positioned on the side surface of the gradient member 8. The connecting plate portion 85 is then fixed to the side surface of the gradient member 8 with screws or bolts, with the connecting plate portion 85 in contact with the side surface of the gradient member 8.

[0089] The sixth connecting portion 81 allows the engaging portion 83 to come into contact with the protruding portion 9 of the slope member 8 while the roof unit 20 is suspended. By bringing the engaging portion 83 into contact with the protruding portion 9 of the slope member 8, the roof unit 20 can be temporarily placed on the roof structure 5. This makes it easier to insert the first connecting shaft portion 37 of the first connecting portion 31 of the roof unit 20 into the insertion hole 6 of the ridge beam 11.

[0090] [Effects of this embodiment] The roof unit 20 includes a sixth connecting portion 81. The sixth connecting portion 81 includes a rafter fixing portion 82 fixed to the rafter 26, an engaging portion 83, a lower surface portion 84, and a connecting plate portion 85. The engaging portion 83 engages with the ridge-side receiving surface 9X of a projection 9 provided on the sloped member 8 of the roof structure 5. The lower surface portion 84 extends from the engaging portion 83 and contacts the upper surface of the sloped member 8. The connecting plate portion 85 extends from the lower surface portion 84 and is positioned on the side surface of the sloped member 8. With this configuration, the sixth connecting portion 81 can be fixed to the side surface of the sloped member 8 with the engaging portion 83 of the sixth connecting portion 81 engaged with the projection 9.

[0091] <Variation> The above embodiment is an example of possible configurations for the roof unit 20 and the construction method for building 1 and roof 2, and is not intended to limit their configuration. The roof unit 20 and the construction method for building 1 and roof 2 may take configurations different from those exemplified in the above embodiment. Examples include configurations in which parts of the configuration of the embodiment are replaced, modified, or omitted, or configurations in which new configurations are added to the embodiment. Modifications of the embodiment are shown below.

[0092] In the first embodiment, the base portion 34 of the first connection portion 31 is connected to the first rafter fixing portion 32 via the first rising portion 35, and to the second rafter fixing portion 33 via the second rising portion 36. In contrast, the base portion 43 may be directly connected to the first rafter fixing portion 32 and the second rafter fixing portion 33.

[0093] In the first embodiment, the base portion 43 of the second connecting portion 41 is connected to the rafter fixing portion 42 via the rising portion 45, but the base portion 43 may also be connected directly to the rafter fixing portion 42.

[0094] In the second embodiment, the connecting plate portion 54 of the third connecting portion 51 extends downward from the end opposite to the end on the lower surface of the base portion 53 to which the rising portion 55 is provided. In contrast, the connecting plate portion 54 may extend downward from the same end on the lower surface of the base portion 53 to which the rising portion 55 is provided.

[0095] In the third embodiment, in the fourth connecting portion 61, the first connecting plate portion 65 extends downward from one end of the lower surface of the base portion 64. The second connecting plate portion 66 extends downward from the other end of the lower surface of the base portion 64. In contrast, the first connecting plate portion 65 may extend downward from near one end of the lower surface of the base portion 64. The second connecting plate portion 66 may extend downward from near the other end of the lower surface of the base portion 64.

[0096] This specification discloses the following technologies: [Note 1] Note 1 is a roof unit fixed to the roof structure. The roof unit comprises a frame having a plurality of rafters, a roof underlayment fixed to the frame, and a positioning connection part provided on the frame to connect the roof structure and the frame. The positioning connection part has a connecting shaft portion that is inserted into an insertion hole in the roof structure.

[0097] [Note 2] The roof unit described in Appendix 1 includes a first connection part as the positioning connection part. The first connecting portion comprises a first rafter fixing portion fixed to the upper end of the rafter, a second rafter fixing portion configured to allow the fixing of rafters of other roof units, a base portion connected to the first rafter fixing portion and the second rafter fixing portion and having a lower surface, and a first connecting shaft portion as the connecting shaft portion, which extends downward from the lower surface and is inserted into the insertion hole of the roof structure.

[0098] [Note 3] The roof unit described in Appendix 1 includes a second connection part as the positioning connection part. The second connecting portion includes a rafter fixing portion fixed to the rafter at a position below the upper end, a base portion connected to the rafter fixing portion and having a lower surface, and a second connecting shaft portion which extends downward from the lower surface and is inserted into the insertion hole of the roof structure.

[0099] [Note 4] The roof unit described in Appendix 2 further comprises a third connection section. The third connecting portion comprises a rafter fixing portion fixed to the rafter, a base portion connected to the rafter fixing portion and having a lower surface, and a connecting plate portion extending downward from the lower surface and positioned on the side surface of the structural axis member of the roof structure.

[0100] [Note 5] The roof unit described in Appendix 3 further comprises a fourth connection section. The fourth connecting portion comprises a first rafter fixing portion fixed to the upper end of the rafter, a second rafter fixing portion configured to allow the fixing of rafters of other roof units, a base portion connected to the first rafter fixing portion and the second rafter fixing portion and having a lower surface, a first connecting plate portion extending downward from the lower surface and positioned on one side of the structural shaft member of the roof structure, and a second connecting plate portion extending downward from the lower surface and positioned on the other side of the structural shaft member.

[0101] [Note 6] The roof unit described in Appendix 2 further comprises a fifth connection section. The fifth connecting portion comprises a rafter fixing portion fixed to the rafter and an engaging portion extending from the rafter fixing portion and engaging with the ridge-side receiving surface of a projection provided on the sloped member of the roof structure.

[0102] [Note 7] The roof unit described in Appendix 2 further comprises a sixth connection section. The sixth connecting portion comprises a rafter fixing portion fixed to the rafter, an engaging portion extending downward from the rafter fixing portion and engaging with the ridge-side receiving surface of a projection provided on the sloped member of the roof structure, a lower surface portion extending from the engaging portion and contacting the upper surface of the sloped member, and a connecting plate portion extending from the lower surface portion and positioned on the side surface of the sloped member.

[0103] [Note 8] Appendix 8 is a building. The building comprises a roof structure and a roof unit described in any one of Appendix 1 to 7. The roof unit is fixed to the roof structure.

[0104] [Note 9] Appendix 9 is a method for constructing the roof of a building. The method for constructing the roof includes a first step of raising a roof unit described in any one of Appendix 1 to 7 above the roof structure; a second step of positioning the roof unit in a predetermined position relative to the roof structure by inserting the connecting shaft portion of the roof unit into the insertion hole of the roof structure; and a third step of fixing the roof unit to the roof structure. [Explanation of Symbols]

[0105] 1...Building, 2...Roof, 5...Roof structure, 6...Through hole, 8...Sloping member, 9...Protruding part, 9X...Ridge side receiving surface, 10...Structural shaft member, 20...Roof unit, 21...Frame, 22...Roof underlayment material, 24...Positioning connection part, 25...Connecting shaft part, 26...Rafter, 31...First connection part, 32...First rafter fixing part, 33...Second rafter fixing part, 34...Base part, 37...First connecting shaft part, 41...Second connection part, 42...Rafter fixing part, 4 3...base section, 44...second connecting shaft section, 51...third connecting section, 52...rafter fixing section, 53...base section, 54...connecting plate section, 61...fourth connecting section, 62...first rafter fixing section, 63...second rafter fixing section, 64...base section, 65...first connecting plate section, 66...second connecting plate section, 71...fifth connecting section, 72...rafter fixing section, 73...engaging section, 81...sixth connecting section, 82...rafter fixing section, 83...engaging section, 84...bottom section, 85...connecting plate section.

Claims

1. A roof unit that is fixed to the roof structure, A frame having multiple rafters, Roofing base material fixed to the aforementioned frame, The frame is provided with a positioning connection part that connects the roof structure and the frame, The positioning connection portion has a connecting shaft portion that is inserted into the insertion hole of the roof structure. Roof unit.

2. The positioning connection portion includes a first connection portion, The first connecting portion comprises a first rafter fixing portion fixed to the upper end of the rafter, a second rafter fixing portion configured to allow the fixing of rafters of other roof units, a base portion connected to the first rafter fixing portion and the second rafter fixing portion and having a lower surface, and a first connecting shaft portion as the connecting shaft portion, which extends downward from the lower surface and is inserted into the insertion hole of the roof structure. The roof unit according to claim 1.

3. The positioning connection portion includes a second connection portion, The second connecting portion includes a rafter fixing portion fixed to the rafter at a position below the upper end, a base portion connected to the rafter fixing portion and having a lower surface, and a second connecting shaft portion which extends downward from the lower surface and is inserted into the insertion hole of the roof structure, The roof unit according to claim 1.

4. Further equipped with a third connection section, The third connecting portion comprises a rafter fixing portion fixed to the rafter, a base portion connected to the rafter fixing portion and having a lower surface, and a connecting plate portion extending downward from the lower surface and positioned on the side surface of the structural axis member of the roof structure. The roof unit according to claim 2.

5. Further comprising a fourth connection section, The fourth connecting portion comprises a first rafter fixing portion fixed to the upper end of the rafter, a second rafter fixing portion configured to allow the fixing of rafters of other roof units, a base portion connected to the first and second rafter fixing portions and having a lower surface, a first connecting plate portion extending downward from the lower surface and positioned on one side of the structural axis member of the roof structure, and a second connecting plate portion extending downward from the lower surface and positioned on the other side of the structural axis member. The roof unit according to claim 3.

6. Further equipped with a fifth connection section, The fifth connecting portion comprises a rafter fixing portion fixed to the rafter and an engaging portion extending from the rafter fixing portion and engaging with the ridge-side receiving surface of a projection provided on the sloped member of the roof structure. The roof unit according to claim 2.

7. Further equipped with a sixth connection section, The sixth connecting portion comprises a rafter fixing portion fixed to the rafter, an engaging portion extending downward from the rafter fixing portion and engaging with the ridge-side receiving surface of a projection provided on the sloped member of the roof structure, a lower surface portion extending from the engaging portion and contacting the upper surface of the sloped member, and a connecting plate portion extending from the lower surface portion and positioned on the side surface of the sloped member. The roof unit according to claim 2.

8. The roof structure comprises a roof unit according to any one of claims 1 to 7, The roof unit is fixed to the roof structure. architecture.

9. A method for constructing the roof of a building, A first step of raising the roof unit according to any one of claims 1 to 7 above the roof structure, A second step involves inserting the connecting shaft portion of the roof unit into the insertion hole of the roof structure to position the roof unit in a predetermined position relative to the roof structure, The third step includes fixing the roof unit to the roof structure, Roof construction methods.

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