Roof for building

Abstract

To provide eaves for buildings that can control unintended leaks and contamination caused by puddling, even when rainwater flows back due to capillary action.SOLUTION: A base frame 20 attached to a building frame and an eaves board 11 supported by the base frame 20 are provided. The eaves board 11 is formed by joining a plurality of eaves materials 12 in a width direction W, and at least a part of the eaves material 12 has a notch 35 at a joint portion with an adjacent eaves material 12.SELECTED DRAWING: Figure 12

Description

Technical Field

[0001] This invention relates to a building eaves attached to the eaves of a building or the like.

Background Art

[0002] Patent Document 1 discloses a building eaves including an eaves main body formed by connecting a plurality of eaves constituent members in the width direction to each other, and a tip cut-off member attached to the front end of the eaves main body across the front ends of the plurality of eaves constituent members, the building eaves being arranged to be inclined so that it is lower toward the front side, and a confluence part is provided in front of the tip cut-off member or the tip cut-off member to confluence rainwater flowing down along the upper surface part of the eaves main body and rainwater flowing down through the gaps between the eaves constituent members, and the confluent rainwater is drained from the front edge or a location in front of the front edge of the tip cut-off member.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, in the above-described conventional building eaves, rainwater that has entered between the eaves constituent members (joint parts) flows backward due to capillary action, and the rainwater may penetrate to the wall side and flow along the wall, or may drip from the back surface of the eaves constituent members, resulting in rain leakage from unintended drainage paths, or water may accumulate in the groove and become dirty when the water dries. Therefore, an object of the present invention is to provide a building eaves that can suppress unintended rain leakage even when rainwater flows backward due to capillary action.

Means for Solving the Problems

[0005] In order to solve the above-described problems, the present invention includes a base frame attached to a building body and an eaves board supported by the base frame. The eaves board is formed by joining a plurality of eaves members in the width direction, and at least a part of the eaves members is provided with a notch at the joint with the adjacent eaves members.

Effect of the Invention

[0006] As described above, at least a part of the eaves members is provided with a notch at the joint with the adjacent eaves members. According to such a configuration, even when rainwater that has entered between the eaves members (joints) flows back due to capillary action, the water can be cut off at the notch, and it is possible to prevent the rainwater from flowing back further than the notch. Thereby, it is possible to suppress stains caused by unintended rain leakage or water accumulation.

Brief Description of the Drawings

[0007]

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

Figure 19

Embodiments for Carrying Out the Invention

[0008] Embodiments of the present invention will be described with reference to the drawings. In the following description, the horizontal direction in which the eaves board 11 protrudes is the front, and the side of the building body (the opposite direction of the front) as viewed from the eaves board 11 is the rear. Also, this front-rear direction is defined as the depth direction D of the building eaves 10, the horizontal direction orthogonal to the depth direction D is the width direction W, and the vertical direction is the height direction H (up-down direction).

[0009] The eave 10 for a building according to this embodiment is attached to the eaves of a building or the like to block direct sunlight, rainwater, etc. As shown in FIGS. 1 and 2, it includes an eave plate 11, a base frame 20, a base angle 21, a base cover 23, a base footer 25, a tip frame 28, a tip cover 29, a tip footer 30, and a lower base cover 31.

[0010] The eave plate 11 is formed by joining a plurality of eave members 12 in the width direction W, and the upper and lower surfaces are flush. In this embodiment, the left eave member 14 used at the left end of the eave plate 11, the right eave member 15 used at the right end of the eave plate 11, and the intermediate eave member 13 disposed between the left eave member 14 and the right eave member 15 are combined to form the eave plate 11. The lateral width of the eave plate 11 is adjustable by increasing or decreasing the number of intermediate eave members 13. These three types of eave members 12 are hollow long members as shown in FIG. 3, for example, extruded profiles made of aluminum. These eave members 12 are all formed in the same size, and the vertical height dimensions (thicknesses) are also set to be substantially the same. This eave plate 11 is supported by the base frame 20 described later so that the tip side inclines downward.

[0011] The base frame 20 is a member for supporting the eave plate 11 and other members, and as shown in FIG. 2, it is attached to the wall surface 70 of the building body. This base frame 20 is a long member having a width substantially the same as the width of the eave plate 11. The base frame 20 according to this embodiment is fixed to the wall surface 70 of the building by mounting bolts 20a and mounting nuts 20b that are attached to the wall surface 70 in advance as shown in FIG. 2. The eave plate 11 is attached to the front surface of this base frame 20.

[0012] The base angle 21 is a member that cooperates with the base frame 20 to support the eaves member 12. Specifically, as shown in FIG. 2, the eaves member 12 supported by the base frame 20 on its lower surface is pressed in from above by the base angle 21, and the eaves member 12 is sandwiched and supported from both the upper and lower sides by the base frame 20 and the base angle 21. As shown in FIG. 7, this base angle 21 is shorter than the base frame 20 in the width direction W, and a plurality of base angles 21 are used with a predetermined interval therebetween. Since the base angle 21 according to the present embodiment is arranged so as to straddle the joint portion of the eaves plate 11, all the eaves plates 11 can be held with a smaller number of sheets (for example, one sheet for every two sheets of the eaves plate 11) than the eaves plate 11. Note that the same number of base angles 21 as the eaves plates 11 may be used.

[0013] The base cover 23 is a cover member attached so as to cover the upper surfaces of the base frame 20 and the base angle 21. This base cover 23 covers the joint portion between the base frame 20 and the eaves plate 11 (all portions where the two are in contact and joined) so as not to expose it. In the present embodiment, the base angle 21 is completely covered by the base cover 23. By this base cover 23, rainwater does not directly pour onto the base frame 20 and the base angle 21. This base cover 23 is inclined so as to flow rainwater toward the front eaves member 12. At the front end of this base cover 23, a front locking portion 23a formed by folding back in a hook shape is provided. As shown in FIG. 14, this front locking portion 23a is hooked between the tip of the base angle 21 and the upper surface of the eaves plate 11. Further, the rear end of this base cover 23 is fixed to the base frame 20 by base cover screws 24 as shown in FIG. 2.

[0014] The base footer 25 is a cover member attached to the side end portion (the edge) of the base frame 20. This base footer 25 is fixed to both end portions of the base frame 20 by screws or the like.

[0015] The tip frame 28 is a member for attaching the tip cover 29, which will be described later, to the eaves board 11. The tip frame 28 according to the present embodiment is a long member having a substantially L-shaped cross section. This tip frame 28 is attached to the tip of the eaves board 11 by screws 28a for the tip frame.

[0016] The tip cover 29 is a long cover material that covers the tip of the eaves board 11. This tip cover 29 is attached to the tip frame 28 by screws 29a for the tip cover.

[0017] The tip lid 30 is a cover member attached to the side end (the narrow end) of the tip cover 29. This tip lid 30 is fixed to both ends of the tip cover 29 by screws or the like.

[0018] The lower base cover 31 is a cover member attached so as to cover the lower surface of the base frame 20. The front and rear ends of this lower base cover 31 are respectively hooked on the base frame 20, so that it can be attached to the base frame 20 without using other members such as fasteners.

[0019] Next, the specific shape of the above-described eaves material 12 will be described in detail. As shown in FIG. 3, the eaves material 12 according to the present embodiment includes an upper plate portion 40 and a lower plate portion 41 that are parallel to each other, and a hollow portion 17 is provided between the upper plate portion 40 and the lower plate portion 41. A plurality of vertical walls extending in the vertical direction are provided between the upper plate portion 40 and the lower plate portion 41. In the present embodiment, side wall portions 42 are provided on both the left and right sides as these vertical walls, and an intermediate wall portion 43 is provided between the side wall portions 42. The hollow portion 17 is partitioned by these vertical walls.

[0020] In addition, these eaves materials 12 are provided with a first joint portion 50 or a second joint portion 60 on the side portions. In the present embodiment, the intermediate eaves material 13 is provided with the first joint portion 50 on the right side portion and the second joint portion 60 on the left side portion. The left eaves material 14 is provided with the first joint portion 50 on the right side portion. The right eaves material 15 is provided with the second joint portion 60 on the left side portion. Adjacent eaves materials 12 are joined to each other by the engagement of the first joint portion 50 provided on one eaves material 12 and the second joint portion 60 provided on the other eaves material 12.

[0021] As shown in FIG. 3, the first joint portion 50 is a deformed substantially U-shaped portion that opens laterally. This first joint portion 50 includes a first side wall portion 52 that is a side wall portion 42 partitioning the first joint portion 50, a first upper protruding portion 51 that protrudes laterally from the first side wall portion 52 by extending the upper plate portion 40, and a first lower protruding portion 53 that protrudes laterally from the first side wall portion 52 by extending the lower plate portion 41. These protruding portions are formed so as to engage with adjacent eaves materials 12. A rotation shaft portion 51a is formed at the tip of the first upper protruding portion 51. The rotation shaft portion 51a is formed such that at least the lower surface is a curved surface (preferably a semi-cylindrical curved surface).

[0022] In addition, an arc portion 52a is provided at the upper end of the first side wall portion 52 so as to be continuous with the lower surface of the upper plate portion 40. The arc portion 52a is formed in an arc shape along the circumferential surface of the rotation shaft portion 51a. With such a configuration, an arc-shaped guide groove 52b is formed between the rotation shaft portion 51a and the arc portion 52a, and the rotation shaft portion 51a is disposed above the guide groove 52b.

[0023] In addition, a straight portion 52d that extends substantially vertically downward is connected to the lower side of the first side wall portion 52 where the above-described guide groove 52b (arc portion 52a) is located. An inclined portion 52c is connected to the lower side of this straight portion 52d. This inclined portion 52c is inclined inward (opposite to the opening direction of the first joint portion 50) as it goes downward.

[0024] The first lower protruding portion 53 includes a flat plate portion 53a continuous with the lower plate portion 41, a rising portion 53b extending upward from the end of the flat plate portion 53a, and an arcuate curved piece 53c extending obliquely upward from the upper end of the rising portion 53b. The curved piece 53c is formed in an arc shape centered on the rotation shaft portion 51a below the rotation shaft portion 51a. Note that the curved piece 53c does not have to be a complete arc centered on the rotation shaft portion 51a, and any shape along the outer periphery of the rotation shaft portion 51a is acceptable.

[0025] Note that the space surrounded by the first side wall portion 52 and the first lower protruding portion 53 described above is in a groove shape opening upward, forming an intermediate gutter portion 54 for receiving water that infiltrates from the joined joint. Water can flow in the longitudinal direction of the eaves material 12 through this intermediate gutter portion 54. In the present embodiment, since a part of the first side wall portion 52 is formed obliquely (including the inclined portion 52c), a large volume of the intermediate gutter portion 54 (the maximum volume of water that can be received by the gutter) is ensured. Further, since the curved piece 53c protrudes while drawing an arc laterally, a larger volume of the intermediate gutter portion 54 is ensured.

[0026] Next, the second joint portion 60 joined to the first joint portion 50 will be described. As shown in FIG. 3, the second joint portion 60 is also a deformed substantially U-shaped portion opening laterally. The second joint portion 60 includes a second side wall portion 62 which is a side wall portion partitioning the second joint portion 60, a second upper protruding portion 61 protruding laterally from the second side wall portion 62 (that is, laterally from the hollow portion 17) by extending the upper plate portion 40, and a second lower protruding portion 63 protruding laterally from the second side wall portion 62 (that is, laterally from the hollow portion 17) by extending the lower plate portion 41. These protruding portions are formed so as to engage with adjacent eaves materials 12.

[0027] At the tip of the second upper protruding portion 61, a rotation receiving portion 61a is formed. The rotation receiving portion 61a has an arcuate inner peripheral surface that opens upward. This rotation receiving portion 61a can support the rotation shaft portion 51a of the first joint portion 50 from below. This rotation receiving portion 61a can rotatably support the placed rotation shaft portion 51a. Also, this rotation receiving portion 61a can be inserted into the guide groove 52b of the first joint portion 50. Since the guide groove 52b is arcuate like the rotation receiving portion 61a, the inserted rotation receiving portion 61a can be rotatably supported. With such a configuration, the first joint portion 50 and the second joint portion 60 can be rotated relative to each other to easily join the eaves material 12. This joining method will be described in detail later.

[0028] Further, the second side wall portion 62 is provided with a support groove 62a into which the tip of the curved piece 53c of the first joint portion 50 is inserted. When the first joint portion 50 and the second joint portion 60 are joined, the curved piece 53c is inserted into the support groove 62a, so that the load in the vertical, horizontal, and lateral directions can be received, thereby enhancing the strength of the joint portion. In other words, since it is supported at two points, namely the rotation receiving portion 61a inserted into the guide groove 52b and the curved piece 53c inserted into the support groove 62a, it can be reinforced against the load in the vertical, horizontal, and lateral directions. Also, as shown in FIGS. 4(d) and 5(d), since a labyrinth shape is formed at the tip of the intermediate gutter portion 54, water is less likely to leak to the lower surface of the eaves material 12. Note that this support groove 62a is formed to be slightly wider than the thickness of the curved piece 53c, and the curved piece 53c is loosely fitted into the support groove 62a. In other words, the curved piece 53c is inserted into the support groove 62a so that a gap is created around it. It is desirable that the support groove 62a and the curved piece 53c are formed so as not to contact each other when the first joint portion 50 and the second joint portion 60 are rotated and joined. By loosely fitting the curved piece 53c and the support groove 62a in this way, no force is required when joining or removing the eaves material 12, and the work can be easily performed.

[0029] Further, at the tip of the second downward protruding portion 63, a standing portion 63a that is bent upward is formed. When the first joint portion 50 and the second joint portion 60 are joined, this standing portion 63a abuts against the rising portion 53b. By this standing portion 63a abutting against the rising portion 53b, adjacent eaves materials 12 are supported in a flat state with respect to each other. Further, by forming this standing portion 63a, the space surrounded by the second side wall portion 62 and the second downward protruding portion 63 has a groove shape, forming a secondary gutter portion 64. As shown in FIGS. 4(d) and 5(d), this secondary gutter portion 64 is arranged so as to overlap below the intermediate gutter portion 54 and can receive water that has leaked outside the intermediate gutter portion 54. By providing this secondary gutter portion 64, even if water infiltrates to the back side of the curved piece 53c, this water can be received.

[0030] As shown in FIG. 4, the above-described first joint portion 50 and second joint portion 60 can be joined by rotating the first joint portion 50. Also, as shown in FIG. 5, the second joint portion 60 can be rotated and joined.

[0031] When joining by rotating the first joint portion 50, first, as shown in FIG. 4(b), the first joint portion 50 is tilted obliquely and inserted into the second joint portion 60 from above. Then, as shown in FIG. 4(c), the rotation shaft portion 51a is placed on the rotation receiving portion 61a. Thereafter, as shown in FIG. 4(d), the first joint portion 50 is rotated about the rotation shaft portion 51a, and the rising portion 53b is brought into contact with the standing portion 63a. Through such operations, two adjacent eaves materials 12 are joined flatly with respect to each other. At this time, the curved piece 53c is automatically inserted into the inside of the support groove 62a.

[0032] Also, when rotating and joining the second joint portion 60, first, as shown in Fig. 5(a), the second joint portion 60 is tilted diagonally and inserted into the first joint portion 50 from above. Then, as shown in Fig. 5(b), the rotation receiving portion 61a is slid upward along the inclined portion 52c. Then, as shown in Fig. 5(c), the rotation receiving portion 61a fits into and catches in the guide groove 52b. After that, as shown in Fig. 5(d), the second joint portion 60 is rotated by inserting the rotation receiving portion 61a along the guide groove 52b, and the standing portion 63a is brought into contact with the rising portion 53b. Through such operations, two adjacent eaves members 12 are joined flat to each other. At this time, the curved piece 53c is automatically inserted into the inside of the support groove 62a.

[0033] The above-described first joint portion 50 and second joint portion 60 are formed over the entire length of the eaves member 12 in the longitudinal direction. For this reason, as shown in Fig. 6, after joining the first joint portion 50 and the second joint portion 60, the eaves member 12 can be slid in the depth direction D of the building eaves 10. Therefore, after joining the eaves members 12, they can be slid to the mounting position (direction of the base frame 20) and fixed to the base frame 20, and the workability is good.

[0034] Note that, as shown in Fig. 6, an irregular wood grain pattern 12a is formed on the lower surface of these eaves members 12. This wood grain pattern 12a is formed along the longitudinal direction of the eaves member 12, and by making the intervals and heights irregular, a natural wood grain can be expressed. By forming the wood grain, the design property of the wood grain can be utilized, and also, since the joint portions between the eaves members 12 are less conspicuous, the design is good. Also, since the wood grain can be formed during extrusion molding, the manufacturing is easy. In the present embodiment, the wood grain is formed along the extrusion molding direction, but it is not limited to this, and the wood grain may be formed in a direction orthogonal to the extrusion molding direction.

[0035] Next, the specific shapes of the base angle 21 and the base frame 20 will be described in detail. The base angle 21 is a member attached to the base frame 20 to support the upper surface of the eaves board 11, and is formed in a plate shape that is refracted stepwise as shown in FIG. 8. This base angle 21 includes an upper hook portion 21a, an arm portion 21b extending obliquely downward and forward from the hook portion 21a, and a mounting portion 21c protruding forward from the tip of the arm portion 21b. The hook portion 21a is a portion that is hooked inside a locking piece 26a (described later) of the base frame 20. This hook portion 21a is inserted downward into the locking piece 26a of the base frame 20 and is held down from above by the locking piece 26a. The mounting portion 21c is a portion that abuts against the upper surface of the eaves material 12 and presses down on the upper surface of the eaves material 12 from above. This mounting portion 21c is fixed to the eaves material 12 by an eaves fixing tool 22 described later. Further, a cover engaging portion 21d for engaging the front locking portion 23a of the base cover 23 is formed at the tip of the mounting portion 21c. This cover engaging portion 21d is provided with a step (recess) by forming a shape in which the lower surface of the tip of the mounting portion 21c is notched. Note that the arm portion 21b is formed so that the rear is higher and the front is lower, and is configured to guide rainwater or the like received on the upper surface forward.

[0036] As shown in FIGS. 8 and 9(a), the base frame 20 is a substantially L-shaped member, and includes a substantially vertical vertical piece 26 and a horizontal piece 27 protruding forward from near the lower end of the vertical piece 26.

[0037] The vertical piece 26 is a plate-shaped portion that is fixed in a state of abutting against the surface of the building body (wall surface 70). The vertical piece 26 is pre-drilled with holes for mounting through which mounting bolts 20a are passed, and the mounting bolts 20a are inserted into these holes and the mounting nuts 20b are fastened from the front to fix it to the wall surface 70. At this time, the rear surface of the vertical piece 26 is fixed in a state of being closely attached to the surface of the building body. Since there is no gap between the vertical piece 26 and the surface of the building body, it is possible to prevent rainwater or the like from entering the gap. On the front surface of this vertical piece 26, a cover mounting piece 26d, a locking piece 26a, and a support piece 26b are formed to protrude forward.

[0038] The cover attachment piece 26d is for attaching the upper end of the base cover 23 and is provided near the upper end of the vertical piece 26. The upper surface of this cover attachment piece 26d slopes downward as it goes forward.

[0039] The locking piece 26a is a part that protrudes forward to lock the hooking part 21a of the base angle 21 described above. This locking piece 26a is formed to protrude in a substantially J shape in the horizontal direction and opens downward. The hooking part 21a can be hooked on this locking piece 26a. Specifically, with the base angle 21 tilted, the hooking part 21a can be inserted into the inside of the locking piece 26a from below, and the hooking part 21a can be hooked on the inside of the locking piece 26a. Then, when the base angle 21 is rotated about the hooked tip, the locking piece 26a can hold and retain the hooking part 21a. Note that since this locking piece 26a only hooks and holds the hooking part 21a, the engagement can be easily disengaged by tilting the base angle 21. The upper surface of this locking piece 26a slopes downward as it goes forward, guiding rainwater and the like forward.

[0040] The support piece 26b is a part that protrudes so as to be able to abut against the rear end 11a of the eaves board 11. A positioning protrusion 26c that can abut against the rear end 11a of the eaves board 11 is formed at the tip of this support piece 26b. When attaching the eaves material 12 to the base frame 20, the position of the eaves material 12 can be aligned by abutting the rear end 11a of the eaves board 11 against the positioning protrusion 26c. The upper surface of this support piece 26b slopes downward as it goes forward, guiding rainwater and the like forward.

[0041] The horizontal piece 27 is a part that protrudes forward from the vertical piece 26 and supports the lower surface of the eaves board 11. The horizontal piece 27 according to the present embodiment includes a support surface 27a that supports the lower surface of the eaves board 11 so as to incline downward as it goes forward. This support surface 27a is a flat surface that forms an obtuse angle with the rear surface of the vertical piece 26 (the surface that contacts the wall surface 70). When the eaves board 11 is placed on this support surface 27a, the eaves slopes downward and forward. In such a building eaves 10 that slopes downward and forward, the rainwater received by the building eaves 10 will flow forward.

[0042] A lower base cover 31 is attached to the lower surface of this horizontal piece 27. At the front end of the horizontal piece 27, a lower cover engaging portion 20c for hooking the front end of the lower base cover 31 is provided, and near the rear end of the horizontal piece 27, a support protrusion 20d for attaching the rear end of the lower base cover 31 is provided. The support protrusion 20d is a substantially L-shaped part that protrudes downward from the lower surface of the horizontal piece 27, and the tip extends forward. An engaged claw 20e protrudes obliquely downward from the rear surface of this support protrusion 20d.

[0043] The lower base cover 31 is a plate-like member as shown in FIG. 9(b). A front locking portion 31a is provided at the front end of this lower base cover 31. The front locking portion 31a has a shape that is folded back in a hook shape and is configured to be hooked from the front to the lower cover engaging portion 20c of the base frame 20. Further, near the rear end of the lower base cover 31, a rib 31b that protrudes obliquely upward and rearward is provided. A locking claw 31c is formed on the front surface near the tip of this rib 31b.

[0044] When attaching the lower base cover 31 to the base frame 20, first, as shown in Fig. 10(a), hook the front locking portion 31a onto the lower cover engaging portion 20c of the base frame 20 from the front. Then, as shown in Fig. 10(b), rotate the lower base cover 31 upward and engage the locking claw 31c with the engaged claw 20e of the base frame 20. At this time, the locking claw 31c is pressed against the engaged claw 20e, but by press-fitting, the rib 31b elastically deforms and the locking claw 31c fits into the engaged claw 20e. Thereby, as shown in Fig. 2, the lower base cover 31 can be fixed to the base frame 20.

[0045] Note that the lower base cover 31 needs to have approximately the same width as the base frame 20, but it does not necessarily have to be a single member. A plurality of lower base covers 31 may be connected by a joint member 32 as shown in Fig. 11. When connecting the lower base covers 31 with the joint member 32, first, as shown in Fig. 11(a), with one lower base cover 31 attached to the base frame 20, place the plate-shaped joint member 32 inside this lower base cover 31. Then, as shown in Fig. 11(b), attach the other lower base cover 31 to the base frame 20 and butt the ends of the two lower base covers 31 together. And fasteners such as screws 33 may be used to fix the lower base cover 31 and the base frame 20 to prevent the lower base cover 31 from falling off.

[0046] The above-mentioned eaves 10 for a building can be attached to the wall surface 70, for example, by the following procedure. Although not specifically described in the following procedure, appropriate sealing is carried out as necessary to ensure watertightness.

[0047] (1) Attach the mounting bolt 20a to the wall surface 70. For example, attach a base material to the back side of the wall surface 70 and fix the mounting bolt 20a inserted from the back side to the base material. Thereby, the mounting bolt 20a protrudes from the wall surface 70. Note that the mounting bolt 20a does not have to be attached in advance, and the base frame 20 may be inserted through the wall surface 70 with the base frame 20 sandwiched from the side where the base frame 20 is attached, and fixed by a mounting nut 20b on the indoor side of the wall surface 70.

[0048] (2) Attach the base frame 20. Specifically, insert the mounting bolt 20a into a hole formed in advance in the base frame 20 and fasten the mounting nut 20b from the front.

[0049] (3) Attach the gable material 12 at the end (either the left gable material 14 or the right gable material 15). Specifically, place the gable material 12 on the horizontal piece 27 of the base frame 20, sandwich it from above with the base angle 21, and integrally fix the base angle 21, the gable material 12, and the base frame 20 with the gable fixing tool 22. The gable fixing tool 22 according to the present embodiment is, as shown in FIG. 8, a bolt and a nut that penetrate all of the mounting portion 21c of the base angle 21, the gable material 12, and the horizontal piece 27 of the base frame 20, and these three members can be integrally fixed with this gable fixing tool 22.

[0050] (4) Attach the remaining gable materials 12 in order. That is, join the adjacent gable materials 12 according to the procedure described in FIG. 4 or FIG. 5. Then, as shown in FIG. 6, slide the joined gable materials 12 to the back of the base frame 20. Then, sandwich it from above with the base angle 21 and fix it with the gable fixing tool 22.

[0051] (5) When the attachment of all the gable materials 12 is completed, screw the tip frame 28 to the tip of the gable board 11, and further screw the tip cover 29 to the tip frame 28.

[0052] (6) Attach the base cover 23 to the upper part of the base frame 20. Specifically, first, hook the front end (front locking portion 23a) of the base cover 23 onto the cover engaging portion 21d provided at the front end of the base angle 21. Then, overlap the rear end of the base cover 23 onto the cover attachment piece 26d of the base frame 20 and fix it with the base cover screw 24. (7) Attach the lower base cover 31 to the lower part of the base frame 20. The attachment method is as described in FIG. 10. (8) Screw the base feet 25 to both side portions of the base frame 20. Also, screw the tip feet 30 to both side portions of the tip cover 29. The installation is completed above.

[0053] By the way, at least a part of the eaves material 12 according to this embodiment is provided with a notch portion 35 as shown in FIG. 12. This notch portion 35 is provided at the joint portion with the adjacent eaves material 12. In this embodiment, the notch portion 35 is formed at the second joint portion 60, and the notch portion 35 is not formed at the first joint portion 50. For this reason, as shown in FIG. 13, the intermediate eaves material 13 and the right eaves material 15 having the second joint portion 60 are provided with the notch portion 35.

[0054] As shown in FIG. 13, this notch 35 is formed so as to notch only the protruding portion (second upper protruding portion 61) without notching the hollow portion 17. Thereby, as shown in FIG. 7, a hole is formed between the first joint portion 50 and the second joint portion 60, and rainwater that has traveled between the first joint portion 50 and the second joint portion 60 by capillary action is cut off. Note that the notch 35 is formed in the second joint portion 60 instead of the first joint portion 50 in order to form a hole as large as possible between the first joint portion 50 and the second joint portion 60 and enhance the water drainage effect. By forming the notch 35 in the protruding portion with the larger protruding amount between the first joint portion 50 and the second joint portion 60, a large hole can be formed without notching the hollow portion 17. Further, by notching the rotation receiving portion 61a of the second joint portion 60, it is possible to interrupt water droplets that are about to rise backward of the shielding material 12 by capillary action on the inner peripheral surface of the arc that opens upward. Note that the notch 35 may be formed not only in the second joint portion 60 but also in the first joint portion 50.

[0055] The shape of this notch 35 is not limited to that disclosed in the present embodiment, but the notch 35 should be formed so as to overlap at least the joint portion of the shielding material 12. That is, if there were no such notch 35, the notch 35 should be formed at the location where the shielding materials 12 are in contact with each other. Thereby, the contact portion of the shielding material 12 that is continuous in the longitudinal direction can be interrupted by the notch 35.

[0056] Note that the notch 35 according to the present embodiment is square as shown in FIG. 12, but the shape can be freely set as long as water droplets can be blocked. For example, the notch 35 may be rectangular, round, triangular, or polygonal.

[0057] Note that, as shown in FIGS. 7 and 14, the notch 35 according to the present embodiment is formed on the upper surface side of the eaves board 11 and is formed at a position facing the cover engaging portion 21d. The cover engaging portion 21d is a step (recess) for engaging the front locking portion 23a of the base cover 23. A space is formed between the inner side (lower side) of the cover engaging portion 21d and the upper surface of the eaves board 11. This space is formed over the entire length of the base angle 21 and cannot be filled even when the front locking portion 23a is engaged with the cover engaging portion 21d, and a gap 21e is formed between the cover engaging portion 21d and the upper surface of the eaves board 11. Since the notch 35 is arranged so as to face this gap 21e, the edge of water can be cut by the gap 21e. In other words, without this gap 21e, there is a risk that rainwater may penetrate toward the wall surface 70 along the base angle 21, but such movement of water droplets can be prevented by the gap 21e.

[0058] As described above, since the gap 21e is formed above the notch 35, the edge of water can be cut by the gap 21e. Note that the gap 21e does not have to be at the tip of the base angle 21, and the gap 21e may be formed in the middle of the base angle 21. That is, a gap 21e is formed over the entire width direction between the upper surface of the eaves board 11 and the lower surface of the base angle 21, and it is sufficient that part or all of the notch 35 faces this gap 21e.

[0059] Further, as shown in FIG. 14, the notch 35 is covered by the base cover 23. For this reason, the notch 35 cannot be visually recognized from the outside, and the design property is good.

[0060] As described above, according to the building eaves 10 according to the present embodiment, at least a part of the eaves material 12 is provided with a notch 35 at the joint with the adjacent eaves material 12. According to such a configuration, even when rainwater that has entered between the eaves materials 12 (joint portion) flows backward due to capillary action, the water can be cut by the notch 35, and it is possible to prevent the rainwater from flowing backward prior to the notch 35. Thereby, it is possible to suppress stains caused by rain leakage and water accumulation from unintended locations.

[0061] Further, the eaves board 11 is supported by the base frame 20 such that the tip side inclines downward. By using the notch 35 according to the present embodiment, in such a downward-sloping building eaves 10, it is possible to prevent rainwater from flowing toward the wall surface 70 side (the direction opposite to the drainage direction).

[0062] Further, the eaves member 12 includes a hollow portion 17 and a protruding portion (second upper protruding portion 61) that protrudes laterally from the hollow portion 17. The protruding portion is formed to engage with an adjacent eaves member 12, and the notch 35 is formed to notch only the protruding portion without notching the hollow portion 17. According to such a configuration, since water does not flow into the hollow portion 17, it is possible to prevent dirt caused by water accumulation in the hollow portion 17. Further, since the protruding portion is notched, processing by a mold can be performed, and workability is good.

[0063] Further, the notch 35 is formed on the upper surface side of the eaves board 11 and includes a base cover 23 that covers the joint portion between the base frame 20 and the eaves board 11, and the notch 35 is covered by the base cover 23. According to such a configuration, since the notch 35 is not exposed, the design property is good. Further, since rainwater does not pour down behind (on the wall surface 70 side) the notch 35, it is possible to prevent the rainwater adhering behind the notch 35 from flowing back. Further, an air gap 21e is formed above the notch 35. According to such a configuration, it is possible to cut the edge of water by using the air gap 21e.

[0064] Further, a base angle 21 attached to the base frame 20 and supporting the upper surface of the eaves board 11 is provided. The base angle 21 includes an attachment portion 21c that abuts against the upper surface of the eaves board 11. At the tip of the attachment portion 21c, a cover engagement portion 21d for engaging the base cover 23 is formed, and the notch 35 is formed at a position facing the cover engagement portion 21d. According to such a configuration, it is possible to cut the edge of water by using the air gap 21e of the cover engagement portion 21d.

[0065] (Modification 1) In the above-described embodiment, the notch 35 is formed on the upper surface side of the eaves board 11. However, the present invention is not limited to this. As shown in FIGS. 15 and 16, the notch 36 may be formed on the lower surface side of the eaves board 11.

[0066] As shown in FIG. 15, the notch 36 according to the first modification is formed by notching the second lower protruding portion 63 at the front end of the eaves board 11. As shown in FIG. 16, this notch 36 is formed at a position covered by the tip cover 29.

[0067] A gutter groove 29d is formed inside the tip cover 29. The notch 36 is formed above the gutter groove 29d inside the tip cover 29. Therefore, the rainwater whose edge is cut by the notch 36 falls into the gutter groove 29d and is drained from the gutter groove 29d through a predetermined path.

[0068] According to such a first modification, it is possible to block the droplets adhering to the back surface of the eaves board 11 from rising on the eaves board 11 by capillary action due to the momentum when the rainwater flowing down into the gutter groove 29d drips, by the notch 36. Further, since the notch 36 is inside the tip cover 29, it cannot be visually recognized from the outside, and the design property is good.

[0069] (Second Modification) In the second modification, a notch 37 is formed on the lower surface side of the eaves board 11 in the same manner as in the first modification described above.

[0070] As shown in FIG. 17, the notch 37 according to the second modification is formed by notching the second lower protruding portion 63 near the front end (behind the front end) of the eaves board 11. As shown in FIG. 18, this notch 37 is formed at a position covered by the tip cover 29.

[0071] Inside the tip cover 29, a gutter portion is formed that can receive rainwater flowing to the tip of the eaves board 11. This gutter portion is partitioned into a front gutter portion 29b on the tip side and a rear gutter portion 29c on the building body side. The notch portion 37 is formed above the rear gutter portion 29c inside the tip cover 29. Therefore, the rainwater whose edge is cut by the notch portion 37 falls onto the rear gutter portion 29c and is drained from the rear gutter portion 29c through a predetermined path.

[0072] According to such a modification 2, the notch portion 37 can block the droplets adhering to the back surface of the eaves board 11 from rising on the eaves board 11 by capillary action due to the momentum when the rainwater flowing down into the gutter portion drips. Further, since the notch portion 37 is inside the tip cover 29, it cannot be visually recognized from the outside, and the design property is good.

[0073] In this modification, the notch portion 37 is formed near the front end (behind the front end) of the eaves board 11. However, the present invention is not limited to this, and the notch portion 37 may be formed at the front end of the eaves board 11 in the same manner as in the modification 1.

[0074] (Modification 3) Modification 3 is a construction example in which the base angle 21 is not used. As shown in FIG. 19(a), it is also possible to perform construction without using the base angle 21. Since there is also a gap 21e above the notch portion 35 in this configuration, the same effects as described above are achieved.

[0075] (Modification 4) Modification 4 is an example in which the vertical width of the vertical piece 26 of the base frame 20 is increased. As shown in FIG. 19(b), if the vertical width of the vertical piece 26 of the base frame 20 is increased, the supporting force of the eaves board 11 can be increased, so that the longitudinal direction (D direction) of the eaves board 11 can be lengthened.

Explanation of Signs

[0076] 10 Eaves for building 11 Eaves board 11a Rear end 12 Eaves material 12a Wood grain pattern 13 Intermediate Sheathing Material 14 Left Sheathing Material 15 Right Sheathing Material 17 Hollow Portion 20 Base Frame 20a Mounting Bolt 20b Mounting Nut 20c Lower Cover Engagement Portion 20d Support Projection 20e Engaged Claw 21 Base Angle 21a Hanging Portion 21b Arm Portion 21c Mounting Portion 21d Cover Engagement Portion 21e Gap 22 Sheathing Fixing Tool 23 Base Cover 23a Front Locking Portion 24 Base Cover Screw 25 Base Cap 26 Vertical Piece 26a Locking Piece 26b Support Piece 26c Positioning Projection 26d Cover Mounting Piece 27 Horizontal Piece 27a Support Surface 28 Tip Frame 28a Tip Frame Screw 29 Tip Cover 29a Tip Cover Screw 29b Front Gutter Portion 29c Rear Gutter Portion 29d Gutter Groove 30 Tip Cap 31 Lower Base Cover 31a Front Locking Portion 31b Rib 31c Locking Claw 32 Joint Member 33 Screw 35 - 37 Notch Portion 40 Upper Plate Portion 41 Lower Plate Portion 42 Side Wall Portion 43 Intermediate Wall Portion 50 First Joint Portion 51 First upper protruding part 51a Rotation shaft part 52 First side wall part 52a Arc part 52b Guide groove 52c Inclined part 52d Straight part 53 First lower protruding part 53a Flat plate part 53b Upright part 53c Curved piece 54 Intermediate trough part 60 Second joint part 61 Second upper protruding part 61a Rotation receiving part 62 Second side wall part 62a Support groove 63 Second lower protruding part 63a Standing part 64 Secondary trough part 70 Wall surface W Width direction D Depth direction H Height direction

Claims

1. A base frame attached to a building body, and an eaves board supported by the base frame, comprising: The eaves board is formed by joining a plurality of eaves members in the width direction, The eaves member includes a hollow portion and a protruding portion that protrudes laterally from the hollow portion, The protruding portion includes a flat portion that constitutes the exposed surface of the eaves board and an engaging portion provided at the tip of the flat portion and engaging with an adjacent eaves member (the engaging portion does not constitute the exposed surface of the eaves board), At least a part of the eaves member has a notch in the protruding portion including the flat portion at the joint with an adjacent eaves member, An eaves for a building.

2. The notch is formed across the flat portion and the engaging portion, The eaves for a building according to Claim 1.

3. The eaves board is supported by the base frame such that the tip side is inclined downward, The eaves for a building according to Claim 1.

4. The notch is formed on the upper surface side of the eaves board, A base cover is provided to cover the joint between the base frame and the eaves board, The notch is covered by the base cover, The eaves for a building according to any one of Claims 1 to 3.

5. A gap is formed above the notch, The eaves for a building according to Claim 4.

6. A base angle is attached to the base frame to support the upper surface of the eaves board, The base angle includes a mounting portion that abuts against the upper surface of the eaves board, A cover engaging portion for engaging the base cover is formed at the tip of the mounting portion, The notch is formed at a position facing the cover engaging portion, The eaves for a building according to Claim 4.

7. The notch is formed on the lower surface side of the eaves board, A tip cover attached to the tip of the eaves board is provided, The notch is covered by the tip cover, The eaves for a building according to any one of Claims 1 to 3.

8. Inside the tip cover, a gutter portion capable of receiving rainwater flowing to the tip of the eaves board is formed, The gutter portion is partitioned into a front gutter portion on the tip side and a rear gutter portion on the building body side, The notch is formed above the rear gutter portion, The eaves for a building according to Claim 7.

Images