JP7074332B2 - Eaves - Google Patents

Description

The present invention relates to an eave with a waterproof structure installed on the outer wall of a building so that the eaves project forward.

Conventionally, as a type of eaves, as shown in FIG. 9, there is a structure in which the rear end portion of the eaves plate 101 is held over the entire width by a holder 100 attached to the outer wall of the building (see, for example, Patent Document 1). ). The outer wall of the building is covered with an outer wall material such as an exterior panel. The holder 100 is attached and fixed to the surface u of the outer wall material. In the eaves plate 101, a plurality of plate materials are connected in the width direction so that the side end faces are butted against each other.

The holder 100 has a back plate portion 103 fixed to the outer wall of the building by a plurality of bolts 102, and a pair of upper and lower holding plate portions 104, 105 integrally formed on the front surface of the back plate portion 103. The rear end portion of the eaves plate 101 is inserted between the upper holding plate portion 104 and the lower holding plate portion 105. The rear end surface of the eaves plate 101 is in contact with the front surface of the back plate portion 103, and in this state, the rear end portion of the eaves plate 101 is sandwiched between the upper and lower holding plate portions 104 and 105 by the bolt 106 and the nut 107. It is tightened and fixed.

The holder 100 is covered with the upper cover 108 and the lower cover 111 from above and below. The front end portion of the upper cover 108 abuts on the upper surface of the eaves plate 101, and the rear end portion is screwed to the upper end portion of the back plate portion 103. The caulking materials 109 and 110 are filled between the front end portion of the upper cover 108 and the eaves plate 101 and between the rear end portion of the upper cover 108 and the surface u of the outer wall material, respectively.

To install the eaves on the outer wall of the building, after attaching the holder 100 to the outer wall of the building with a plurality of bolts 102, the rear end portion of the eaves plate 101 is placed between the upper and lower holding plate portions 104 and 105 of the holder 100. Insert and tighten with bolts 106 and nuts 107 to secure. After that, the upper cover 108 and the lower cover 111 are attached above and below the holder 100.
After the above assembly work is completed, the caulking materials 109 and 110 are placed between the front end portion of the upper cover 108 and the rear end portion of the eaves plate 101 and between the rear end portion of the upper cover 108 and the surface u of the outer wall material. Fill each.

Japanese Patent No. 4192199

Since the filling work of the caulking materials 109 and 110 is a work at a high place, the work efficiency is poor and a lot of time is spent on this work. Further, since the filled caulking materials 109 and 110 are directly exposed to rainwater, they deteriorate quickly and need to be repaired frequently, which requires labor for maintenance and management.

The present invention has been made by paying attention to the above-mentioned problems, and an object of the present invention is to improve the efficiency of eaves installation work and to provide eaves that do not require labor for maintenance and management after eaves installation.

The eaves according to the present invention have an eaves plate, a back plate portion fixed to the outer wall of the building, and a pair of holding plate portions that project from the front surface of the back plate portion and hold the rear end portion of the eaves plate by sandwiching it from above and below over the entire length. It includes a holder and a strip-shaped sealing material interposed between the holding plate portion on the upper side of the holder and the rear end portion of the eaves plate. Each holding plate portion has bolt through holes penetrating a plurality of facing positions, and the rear of the eaves plate is provided with bolts passed through each bolt through hole and the bolt through hole provided at the rear end portion of the eaves plate. By tightening between the end portion and the upper and lower holding plate portions, the groove between the upper and lower holding plate portions has flexibility that can be bent in the closing direction. The sealing material is located on the front side of the bolt through hole, and the upper holding plate portion bends so that the lower surface of the upper holding plate portion and the upper surface of the rear end portion of the eaves plate are in close contact with the upper holding plate portion. Stop water at the position on the front side of the bolt through hole between the eaves plate and the rear end.

After attaching the holder to the outer wall of the building, the rear end of the eaves is inserted between the upper and lower holding plates of the holder, and the eaves having the above configuration are tightened and fixed with bolts.
By this tightening, the strip-shaped sealing material is in close contact with each facing surface of the upper holding plate portion and the rear end portion of the eaves plate, so that the space between the upper holding plate portion and the rear end portion of the eaves plate is The sealing material stops the water over the entire width and prevents rainwater from entering the cage and flowing down. Since the upper holding plate portion of the sealing material covers the upper surface thereof, it is not directly exposed to rainwater and deterioration is suppressed.

It is desirable that the sealing material stop water between the upper holding plate and the rear end of the eaves plate at the position on the front side of the bolt through hole, and stop at both the front and rear positions of the bolt through hole. You may try to water it.

It is desirable that the sealing material is positioned in the concave groove provided on the lower surface of the upper holding plate portion in order to prevent misalignment, and further, it is desirable that the sealing material is adhered to the groove bottom of the concave groove.

In one embodiment of the present invention, in the bolt, the head of the bolt is supported on the upper surface of the upper holding plate portion, the shaft portion of the bolt protrudes downward from the bolt through hole of the lower holding plate portion, and the nut is formed. Screwed in.

Various types of holders can be considered, and one embodiment thereof is one in which a pair of holding plate portions are integrally formed on the front surface of the back plate portion.

The holder of another embodiment has a first back plate portion located above the eaves plate and a second back plate portion independent of the first back plate portion and located below the eaves plate. The first back plate portion integrally includes an upper holding plate portion that protrudes from the front surface. The second back plate portion integrally includes an upper holding plate portion that protrudes from the front surface and a lower holding plate portion that faces up and down.

In still another embodiment, the holder has a first back plate portion located above the eaves plate and a second back plate portion independent of the first back plate portion and located below the eaves plate. Have. The first back plate portion integrally includes an upper holding plate portion that protrudes from the front surface. The second back plate portion integrally includes an upper holding plate portion that protrudes from the front surface and a lower holding plate portion that faces up and down. At least one of the first back plate portion and the second back plate portion is integrally provided with a veneer portion protruding between the upper holding plate portion and the lower holding plate portion.

The eaves according to the present invention include, in addition to the eaves plate, the holder and the sealing material, an upper cover to be put on the holder.
The upper cover may have various modes, but one embodiment has a fixing portion at the front end portion, which is abutted against the upper surface of the rear end portion of the eaves plate and is screwed at a plurality of locations. Water is stopped by a strip-shaped second sealing material between the eaves plate and the upper surface of the rear end portion.

According to the present invention, the work of filling the caulking material at a high place is reduced, and the work of fixing the rear end of the eaves plate to the holder also installs the sealing material, so that the work of installing the eaves is streamlined. .. In addition, since the sealing material is not directly exposed to rainwater, it does not easily deteriorate and does not require labor for maintenance and management.

It is a perspective view which shows the appearance of the eaves of one Embodiment. It is sectional drawing which shows the structure of the eave of the embodiment of FIG. It is the end view which looked at the eaves plate from the front. It is a perspective view which shows the state which the eaves plate is attached to the holder. It is sectional drawing which shows the state which the eaves plate is attached to the holder. It is sectional drawing which shows the structure of the eaves of another embodiment. It is sectional drawing which shows the structure of the eaves of another embodiment. It is sectional drawing which shows the structure of the eaves of another embodiment. It is sectional drawing which shows the structure of the conventional eaves.

FIG. 1 shows the appearance of the eaves of one embodiment, and FIG. 2 shows the structure of the eaves.
The illustrated eaves 1 are installed so as to project from the outer wall of the building, and include the eaves plate 2, the holder 3 fixed to the outer wall of the building and holding the rear end portion of the eaves plate 2 over the entire width, and the eaves plate. It includes a leading edge plate 4 mounted on the front edge of 2 over the entire width, an upper cover 5 overlaid on the holder 3, and a lower cover 6 overlaid on the holder 3 from below. An extruded aluminum mold is used as the material constituting the eaves plate 2, the holder 3, the leading edge plate 4, the upper cover 5, and the lower cover 6. In FIG. 1, reference numeral 10 is an end plate that closes the open portions at both ends of the holder 3. In the following description, the direction in which the eaves plate 2 projects from the outer wall of the building is referred to as "front-back direction", and the direction orthogonal to the front-back direction and the up-down direction is referred to as "width direction".

In the eaves 1, the rear end portion of the eaves plate 2 is held by the holder 3 in a front-down state in which the eaves plate 2 is slightly tilted forward. For eaves with a large amount of overhang from the outer wall of the building and a large width, it is desirable to support at least one place of the eaves plate 2 with a support pole, if necessary. Further, the eaves plate 2 may hold the rear end portion in a state of being tilted low to the rear side and then lowered.

The surface of the outer wall of the building is covered with an outer wall material X such as an exterior panel. In the following description, the surface of the outer wall of the building covered by the outer wall material X is referred to as a "base surface w" to distinguish it from the surface u of the outer wall material X.

As shown in FIGS. 1 and 3, the eaves plate 2 has a plurality of intermediate plate members 21 whose side end faces are aligned with each other and connected in the width direction, and sides connected to the outer end faces of the intermediate plate members 21 at both side positions. It is composed of plate materials 22 and 22. Each intermediate plate member 21 is provided with first and second engaging pieces 23, 24 on both side end faces. Each side plate 22 has a second engaging piece 24 that engages with the first engaging piece 23 of the intermediate plate 21 on the inner end surface, or a first engaging piece 24 that engages with the second engaging piece 24 of the intermediate plate 21. It comprises any of the engaging pieces 23. The first and second engaging pieces 23 and 24 engage with each other by sliding one of the adjacent plates in the front-rear direction with respect to the other. In FIG. 4, the intermediate plate 21 is indicated by an arrow q. The state of assembling by sliding in the front-rear direction shown is shown.

A rib 26 for reinforcement is integrally formed inside each intermediate plate member 21, and a reinforcing plate 25 is further provided at a position of each rib 26. The eaves plate 2 has various embodiments, and is not limited to the configuration shown in FIG. 3 in which a plurality of hollow plate materials are connected, and may be, for example, a single eaves plate as a whole.

The holder 3 sandwiches the back plate portion 31 whose back surface is brought into close contact with the lower ground w of the building and is fixed by a plurality of anchor bolts 8 and the rear end portion of the eaves plate 2 which protrudes from the front surface of the back plate portion 31 from above and below. It has a pair of holding plate portions 32 and 33 to be held by. The upper holding plate portion 32 and the lower holding plate portion 33 are parallel to each other and face each other vertically. Between the upper holding plate portion 32 and the lower holding plate portion 33, a groove 34 into which the rear end portions of the intermediate plate members 21 and the side plate members 22 constituting the eaves plate 2 are inserted is formed. The upper and lower holding plate portions 32 and 33 are integrally formed on the front surface of the back plate portion 31, have slight flexibility in the vertical direction, and are tightened in the vertical direction by bolts 9 and nuts 92 described later. , The groove 34 bends slightly in the closing direction.

As shown in FIG. 4, the groove 34 has a groove width into which the rear ends of the plate members 21 and 22 constituting the eaves plate 2 can be inserted from the front, and the front surface is open over the entire length. As shown in FIG. 5, the upper holding plate portion 32 is slightly opened upward, and the lower holding plate portion 33 is slightly opened downward. The groove width d ₂ at the groove bottom of the groove 34 substantially matches the thickness of the rear end portion of each plate material 21 and 22, and the groove width d ₁ at the groove opening of the groove 34 is d ₁ > d ₂ . be.

The back plate portion 31 and the upper and lower holding plate portions 32, 33 have a length corresponding to the entire width of the eaves plate 2. The back plate portion 31 is provided with bolt insertion holes 35 into which anchor bolts 8 are inserted in a horizontal row at regular intervals at positions between the upper and lower holding plate portions 32 and 33. In FIG. 2, reference numeral 82 denotes a washer interposed between the head 80 of the anchor bolt 8 and the back plate portion 31.

As shown in FIGS. 2 and 4, bolt through holes 36 and 37 are provided at a plurality of facing positions of the upper and lower holding plate portions 32 and 33, respectively. Bolt through holes 27 are provided at positions corresponding to the bolt through holes 36 and 37 at the rear end of the eaves plate 2. The bolt through holes 36 and 37 and the bolt through holes 27 communicate with each other vertically, and the nut 92 is screwed into the shaft portion 91 of the bolt 9 which is passed through these holes in series, so that the rear end portion of the eaves plate 2 is formed. It is sandwiched and fixed between the upper and lower holding plate portions 32 and 33.

In the bolt 9, the shaft portion 91 is inserted into the bolt through hole 36 from above the upper holding plate portion 32, and the bolt through hole 27 of the intermediate plate material 21 or the side plate material 22 and the bolt through hole 37 of the lower holding plate portion 33 are inserted. Penetrate in a series. The head 90 of the bolt 9 is supported on the upper surface of the upper holding plate portion 32. The bolt shaft portion 91 projects downward from the bolt through hole 37 of the lower holding plate portion 33, and the nut 92 is screwed into the bolt shaft portion 91. In FIG. 2, 93 is a washer interposed between the head 90 of the bolt and the upper holding plate portion 32, and 94 is a washer interposed between the nut 92 and the lower holding plate portion 33.

As for the bolt 9, the shaft portion 91 may be inserted into the bolt through hole 37 from below the lower holding plate portion 33. In this case, the head 90 of the bolt 9 is supported on the lower surface of the lower holding plate portion 33, the shaft portion 91 projects upward from the bolt through hole 36 of the upper holding plate portion 32, and the nut 92 is screwed.

A strip-shaped sealing material 7 is provided between the upper holding plate portion 32 and the rear end portion of the eaves plate 2 over the entire width of the eaves plate 2. Since the upper holding plate portion 32 bends downward due to the tightening of the nut 92 with respect to the bolt 9, the sealing material 7 is in close contact with the lower surface of the upper holding plate portion 32 and the upper surface of the rear end portion of the eaves plate 2. As a result, the sealing material 7 stops water between the upper holding plate portion 32 and the rear end portion of the eaves plate 2 at the position on the front side of the bolt through hole 36.

The sealing material 7 has the same width and the same thickness over the entire length, and is localized in a state of being fitted in a concave groove 38 having a constant depth formed on the lower surface of the upper holding plate portion 32. The groove 38 covers the entire width of the eaves plate 2, and the front end face and both side end faces are open, but the groove 38 is not limited to such an open form. The sealing material 7 is attached to the bottom of the concave groove 38 with an adhesive, but adhesion is not always necessary. In order to bond the sealing material 7 to the groove bottom of the concave groove 38, it is preferable to use an adhesive tape having adhesive layers on both the front and back surfaces.

As the sealing material 7, elastic materials such as natural rubber and synthetic rubber such as silicon rubber are suitable, but the sealing material 7 is not limited to elastic materials as long as water can be stopped, and for example, plant fibers and leather. May be used. When the sealing material 7 has elasticity, the thickness of the sealing material 7 is set to be slightly larger than the groove depth of the concave groove 38, so that the sealing material 7 has a thickness corresponding to the groove depth by tightening the nut 92 to the bolt 9. Since it is compressed and deformed up to, watertightness is improved.

A first engaging projection 32a projecting diagonally upward is provided on the upper end of the back plate portion 31 of the holder 3, and a second engaging projection 32b projecting downward is provided on the lower surface of the lower holding plate portion 33. However, each is integrally formed over the entire width. A projecting piece 50 projecting downward from the lower surface of the upper cover 5 engages with the first engaging projection 32a. The trailing edge of the lower cover 6 engages with the second engaging protrusion 32b. The front end edge of the lower cover 6 engages with the front end edge of the lower holding plate portion 33.

The front end portion of the upper cover 5 is provided with a first fixing portion 51 that is abutted against the upper surface of the rear end portion of the eaves plate 2 over the entire width and is screwed at a plurality of locations. At the rear end of the upper cover 5, a second fixing portion 52 is provided which is abutted against the lower ground w of the outer wall of the building and is screwed at a plurality of locations.

The first fixing portion 51 has a strip-shaped leading edge portion 53 formed by bending at the front end portion of the upper cover 5, and a plurality of holes 53a are formed in the leading edge portion 53 at regular intervals in the width direction. It was formed. A screw 54 is passed through each hole 53a and screwed into the rear end portion of the eaves plate 2, so that the front end portion of the upper cover 5 is fixed to the upper surface of the rear end portion of the eaves plate 2. On the lower surface of the leading edge portion 53, a concave groove 55 having an open front end surface and both side end surfaces is formed over the entire width, and a strip-shaped second sealing material 56 is fitted into the concave groove 55 to stop water.

The second fixing portion 52 has a strip-shaped trailing edge portion 57 formed by bending at the rear end portion of the upper cover 5, and a plurality of holes 57a are spaced in the trailing edge portion 57 at regular intervals in the width direction. It is formed by. The trailing edge portion 57 is located on the lower ground w of the outer wall of the building and behind the outer wall material X. A dish-shaped screw 58 is passed through each hole 57a and screwed into the lower ground w of the outer wall to fix the rear end portion of the upper cover 5 to the lower ground w of the outer wall.

The upper cover 5 is an inclined portion 50a in which the space between the first fixing portion 51 and the second fixing portion 52 is inclined and curved toward the front side. There is a gap s between the gently inclined rear portion of the inclined portion 50a and the lower end portion of the outer wall material X. An elastic material 59a as a cushioning material is fitted in the gap s on the rear side, and a caulking material 59b is filled on the front side. The caulking material 59b is for filling the gap s to obtain waterproofness, and in addition to its function, it also functions as a cushioning material against the shaking of an earthquake or the like.

6 to 8 show the eaves of other embodiments, respectively. The holder 3 in each embodiment has a first back plate portion 31A located above the eaves plate 2 and a second back plate portion located below the eaves plate 2 independent of the first back plate portion 31A. It has 31B and. The first back plate portion 31A integrally includes an upper holding plate portion 32 projecting from the front surface. The second back plate portion 31B integrally includes a lower holding plate portion 33 that protrudes from the front surface and faces the upper holding plate portion 32.

In the embodiment shown in FIG. 6, the first back plate portion 31A and the second back plate portion 31B are completely separated and independent. The first and second back plate portions 31A and 31B are fixed to the lower ground w of the outer wall of the building by anchor bolts 8, respectively. The rear end surface of the eaves plate 2 abuts on the base surface w.

The embodiment shown in FIGS. 7 and 8 is an embodiment in which the first back plate portion 31A and the second back plate portion 31B are engaged with each other and connected to each other. The first and second back plate portions 31A and 31B are fixed to the lower ground w of the outer wall of the building by a plurality of anchor bolts 8, respectively. In the embodiment shown in FIG. 7, the second back plate portion 31B is integrally provided with a veneer portion 31C projecting toward the first back plate portion 31A. An engaging convex portion 39a and an engaging concave portion 39b that engage with each other are formed between the tip portion of the veneer portion 31C and the lower end portion of the first back plate portion 31A, respectively. The rear end surface of the eaves plate 2 abuts on the front surface of the veneer portion 31C.

In the embodiment shown in FIG. 8, the first and second back plate portions 31A and 31B have veneer portions 31C and 31D protruding between the lower holding plate portion 33 and the upper holding plate portion 32, respectively. It is a one-piece preparation. An engaging concave portion 39b and an engaging convex portion 39a that engage with each other are formed between the tip portions of the veneer portions 31C and 31D, respectively. The rear end surface of the eaves plate 2 abuts on the front surfaces of both veneer portions 31C and 31D.

Also in each of the embodiments of FIGS. 6 to 8, a strip-shaped sealing material 7 is provided between the upper holding plate portion 32 and the rear end portion of the eaves plate 2 over the entire width of the eaves plate 2. The sealing material 7 is brought into close contact with each of the facing surfaces of the upper holding plate portion 32 and the rear end portion of the eaves plate 2 by tightening the nut 92 with respect to the bolt 9. The structure for attaching the sealing material 7 to the upper holding plate portion 32 is the same as that shown in FIG. 2, and description thereof will be omitted here by assigning the same reference numerals to the corresponding configurations.

In each of the above embodiments, the front end portion of the upper cover 5 is only engaged with the front end portion of the upper holding plate portion 32, and the rear end portion is only engaged with the upper end portion of the first back plate portion 31A. Yes, it is not screwed as in the embodiment of FIG.

In order to install the eaves 1 having the above configuration on the outer wall of the building, first, the holder 3 is horizontally attached to the lower ground w of the outer wall of the building by a plurality of anchor bolts 8. Next, as shown in FIG. 4, the rear end portions of the side plate material 22 and the intermediate plate material 21 constituting the eaves plate 2 are sequentially inserted into the groove 34 between the upper and lower holding plate portions 32 and 33 of the holder 3. Insert the bolt 9 from the bolt through hole 36 of the upper holding plate portion 32, pass through the bolt through hole 27 of the eaves plate 2 and the bolt through hole 37 of the lower holding plate portion 33, and insert the nut 92 into the bolt 9. Tighten and fix.

By tightening the bolts 9 and nuts 92 for fixing the rear end of the eaves plate 2 to the holder 3, the strip-shaped sealing material 7 becomes the groove bottom of the concave groove 38 of the upper holding plate portion 32 and the eaves plate 2. It is in close contact with the upper surface of the rear end portion, and the space between the upper holding plate portion 32 and the rear end portion of the eaves plate 2 is stopped by the sealing material 7 over the entire width of the eaves plate 2 to the inside of the holder 3. The ingress of rainwater is blocked.

After that, the upper cover 5 is put on the holder 3, and the lower cover 6 is put on the holder 3 from below. The lower cover 6 is attached by engaging the front end portion and the rear end portion with the holder 3. In the upper cover 5, the leading edge portion 53 of the first fixing portion 51 is abutted against the upper surface of the rear end portion of the eaves plate 2 and screwed by the screw 54, and the trailing edge portion 57 of the second fixing portion 52 is built. It hits the lower ground w of the outer wall of the above and is screwed with the screw 58. After that, after covering the lower ground w of the outer wall of the building with the outer wall material X, the elastic material 59a is fitted in the gap s between the lower end of the outer wall material X and the rear end of the upper cover 5, and the caulking material 59b is used with a caulking gun or the like. Fill.

Since the upper surface of the sealing material 7 is covered with the upper holding plate portion 32 and the upper portion is further covered by the upper cover 5, the sealing material 7 is not directly exposed to rainwater and deterioration is suppressed.

1 eaves 2 eaves plate 3 holder 5 top cover 7 sealant 9 bolt 27 bolt through hole
31 Tergum 31A 1st Tergum 31B 2nd Tergum 31C, 31D Veneer 32,33 Holding Plate 36,37 Bolt Through Hole 38 Recessed Groove 51 First Fixing 52 Second Fixing 56 Second sealant 92 Nut

Claims (8)

A holder having an eaves plate, a back plate portion fixed to the outer wall of the building, and a pair of holding plate portions that project from the front surface of the back plate portion and hold the rear end portion of the eaves plate by sandwiching it from above and below over the entire length. A strip-shaped sealing material interposed between the upper holding plate portion of the holder and the rear end portion of the eaves plate is included.
Each holding plate portion has bolt through holes penetrating a plurality of facing positions, and the eaves plate is provided with bolts passed through each bolt through hole and a bolt through hole provided at the rear end portion of the eaves plate. The sealing material has flexibility so that the groove between the upper and lower holding plates can be bent in the closing direction by tightening between the rear end portion and the upper and lower holding plates. Located on the front side of the bolt through hole, the upper holding plate portion bends so that the lower surface of the upper holding plate portion and the upper surface of the rear end portion of the eaves plate are in close contact with the upper holding plate portion and the eaves plate. An eave that stops water at a position on the front side of the bolt through hole between the rear end and the rear end. The eave according to claim 1 , wherein the sealing material is located in a concave groove provided on the lower surface of the upper holding plate portion. The eave according to claim 2 , wherein the sealing material is adhered to the groove bottom of the concave groove. The bolt according to claim 1, wherein the head of the bolt is supported on the upper surface of the upper holding plate portion, the shaft portion of the bolt protrudes downward from the bolt through hole of the lower holding plate portion, and the nut is screwed. Eaves. The eave according to claim 1, wherein the holder is formed by integrally forming the pair of holding plates on the front surface of the back plate. The holder has a first back plate portion located above the eaves plate and a second back plate portion independent of the first back plate portion and located below the eaves plate. The first back plate portion integrally includes an upper holding plate portion that protrudes from the front surface, and the second back plate portion has a lower holding plate portion that protrudes from the front surface and faces the upper holding plate portion. The eaves according to claim 1 to be provided together. The holder has a first back plate portion located above the eaves plate and a second back plate portion independent of the first back plate portion and located below the eaves plate. The first back plate portion integrally includes an upper holding plate portion that protrudes from the front surface, and the second back plate portion has a lower holding plate portion that protrudes from the front surface and faces the upper holding plate portion. According to claim 1, at least one of the first back plate portion and the second back plate portion is integrally provided with a veneer portion protruding between the upper holding plate portion and the lower holding plate portion. The described eaves. The upper cover further includes an upper cover that is put on the holder, and the upper cover has a fixing portion that is abutted against the upper surface of the rear end portion of the eaves plate at the front end portion and is screwed at a plurality of points. The eave according to any one of claims 1 to 7 , wherein the space between the eaves and the upper surface of the rear end portion of the eaves is stopped by a strip-shaped second sealing material.

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