JP2563710B2 - Extended roof structure - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an extended roof structure capable of forming a large eaves at a low cost by providing an extended roof support frame on a roof beam arranged along the outer wall of a house. .

[0002]

2. Description of the Related Art In recent years, houses such as multi-storey apartment houses having a stair room a open to the front as shown in FIG. 1 have become popular. In such a house, especially a house constructed in a heavy snow area, in order to prevent snow, rain, etc. from entering the staircase a, the eaves of the eaves b protruding above the staircase a Larger output is required. Therefore, the eaves point b
The near the tip, conventional pillars c is erected as illustrated in Figure 5, the load is increased by increasing the output of the eaves
It was carried by this pillar c . Alternatively, the strength of the eaves frame structure has been increased by enlarging the cross section of the rafter tree d that receives the ground plate, and thus the eaves have been secured.

[0003]

However, in such a conventional one, the cost is increased due to the construction of the pillar c, and if anything, the appearance is unnatural and the appearance is deteriorated. was there. Further, even if the cross section of the rafter tree d is large, there are problems to be solved, such as an increase in member cost, poor economy, and a great deal of labor for attaching a heavy rafter tree.

According to the present invention, a roof beam supporting a rafter is provided with an extended roof support frame composed of a cantilever beam and a front beam, and a pillar is built under the eaves or the cross section of the rafter is enlarged. It is an object of the present invention to provide an extended roof structure capable of solving the above-mentioned problems by enlarging the eaves while achieving cost reduction without problems.

[0005]

In order to achieve the above-mentioned object, an extended roof structure of the present invention is a roof which is arranged along an outer wall of a house and which supports a tree extending diagonally downward beyond the outer wall. From a cantilever beam that extends to the beam at right angles to the roof beam and parallel to the outside, and a front beam that connects the tip ends of the cantilever beam and has an upper surface lower than the upper surface of the roof beam. The extended roof support frame will be installed on the front beam.
The front surface of the front beam and extending above the cantilever.
A lunge is provided on the upper surface of the flange of the front beam ,
Mounted on the flange of the flange, bolt on the cantilever
A fixing piece to be fastened, and characterized in that the fly piece mounting bracket having a vertical Tatsuhen being arranged in the longitudinal direction of the rising and the cantilever from the fixed piece, securing said rafters
are doing.

[0006]

[Function] An extension roof support frame consisting of a cantilever beam extending outward in parallel and a front beam connecting the ends of the cantilever beam is provided on the roof beam arranged along the outer wall of the house. ,
The roof beam and the front beam support a tree that extends obliquely downward beyond the outer wall. Since the upper surface of the front beam is lower than the upper surface of the roof beam, a structurally stable triangular eaves frame structure can be configured by a rafter, a roof beam, and a cantilever, and the load applied to the roof eaves It is possible to form the eaves with a large eaves while supporting the eaves, and prevent ingress of snow, rain, etc. into, for example, a staircase. Further, in order to form such an eaves tip, it is not necessary to build pillars under the eaves or to make the section of the rafter extremely large, so that it is possible to reduce the member cost and economically secure the eaves exit. It is possible to reduce the labor required for installing pillars and rafters.

The mounting bracket for fixing the rafters is a fixing piece.
Is placed on the upper surface of the flange of the front beam,
Since it is bolted to the cantilever, the cantilever and front beam are
It can also be joined by fixing the mounting bracket with the bolts described above, and
Reliable and stable support of rafters as a result
It

[0008]

EXAMPLE An extended roof structure of the present invention is shown in FIG.
A case of forming an eaves tip B above a staircase A of a house H which is a multi-story apartment house will be described as an example with reference to the drawings.

In the figure, an extended roof structure is provided with a roof beam 3 which is arranged along an outer wall W of a house H and which supports a sag tree 2 extending obliquely below the outer wall W to the roof. A cantilever 4 that extends at right angles to the beam 3 and parallel to the outside, and a front beam 5 that connects the ends of the cantilever 4 and that has an upper surface lower than the upper surface of the roof beam 3. In addition to providing the extended roof support frame 6 consisting of and on the standing piece 9 of the mounting bracket 10 fixed to the upper surface of the front beam 5 and having a vertical standing piece 9,
The rafter 2 is fixed.

In the present embodiment, the outer wall W is a wall formed by attaching an exterior plate 21 and an interior plate 22 to the front and back of a frame in which frame members 20 having a substantially rectangular cross section are joined in a rectangular shape, as schematically shown in FIG. It is formed by the panel P. The lower end of the wall panel P is supported by fixing the lower frame member to a beam member (both not shown) by using an appropriate fitting, and the upper end is supported by the roof beam 3.

In this example, the roof beam 3 is made of channel steel, and is a lattice beam in which a strip plate 29, and a lattice 30 are bridged between an upper chord member 26 and a lower chord member 27, which are arranged vertically with the groove portions facing each other. And is horizontally installed between the pillars 31 of the house as shown in FIG. Further, rectangular lowering pieces 32 are separated from each other on the lower surface of the lower chord member 27 by welding or the like, and one piece is screwed to the upper surface of the frame member 20A above the wall panel P with the lowering pieces 32. Standing piece 24 of L-shaped mounting bracket 23
The upper end of the wall panel P is supported by the roof beam 3 by bolting to form the outer wall W. Thus, the roof beam 3 is arranged above the outer wall W and along the outer wall W. Furthermore, the roof beam 3 supports the sag tree 2 that extends obliquely downward beyond the outer wall W to the outside.

The rafter 2 is made of a long wood material having a rectangular cross section, and the upper end thereof is fixed to, for example, a purlin (not shown) and has a roof slope and extends outward and to the tip of the eaves, and above the outer wall W. It is supported by the roof beam 3 via a mounting member 34.

In this embodiment, as shown in FIGS. 2 and 3, the mounting member 34 is a support piece that is inclined at a roof slope to the inner and outer edges of a rectangular fixing piece 34A that is bolted to the upper surface of the upper chord member 26 of the roof beam 3. Metal fittings 34B and 34C are provided, and the support piece 3
4B and 34C are brought into contact with the lower surface of the rafter 2 and fixed with screws, so that the roof beam 3 is attached to the rafter 2 through the mounting bracket 34.
I support. Further, the rafter 2 is fixed to the extended roof support frame 6 provided on the roof beam 3 by using a mounting member 10 at a portion protruding from the outer wall W.

The extended roof support frame 6 comprises a plurality of cantilever beams 4 ... And a front beam 5. In this example, the cantilever 4 is made of H-shaped steel in which horizontal flanges 4a and 4b are provided above and below a vertical web, and is welded to its rear end, that is, indoors and extends above the upper flange 4a. the prolongation unit 36A roof beams 3 of longitudinal rectangular fixing plate 36 having an extended length portion 36A
By bolting to the strip plate 29 of the cantilever 4
Is fixed to the roof beam 3 by projecting outward at right angles to the roof beam 3. Note the tip of the cantilever 4, i.e. with a rectangular fixing plate 37 for the front beam 5 attached to the outdoor side is welded between the flange 4a of the upper and prolongation portion 36A of the fixing plate 36 The triangular reinforcing plate 39 is fixed.

As shown in FIG. 4, four cantilever beams 4 are arranged in parallel with each other in parallel with each other in height as shown in FIG. The cantilevers 4A and 4A located at both ends of the eaves tip B
Is fixed to the outer surface of the pillar 31 of the house H ,
A horizontal brace 40 is bridged between the cantilever beams 4 ... 4A to enhance the strength.

[0016] The front beam 5 is made vertical webs of H-shaped steel having a horizontal flange vertically, bolting fixing plate 37 fixed to the tip of the cantilever 4,4A to the web The upper flange above the cantilever 4, 4A.
The front beam 5 is extended horizontally and is horizontally bridged between the ends of the cantilever beams 4 and 4A. Further, the upper surface of the front beam 5 is lower than the upper surface of the roof beam 3 as shown in FIG. 2, and it is possible to support the rafter 2 that is inclined at the roof slope. The rafter 2 is supported by the front beam 5 by using a mounting member 10 fixed to the upper surface of the front beam 5.

The mounting member 10 is the upper surface of the front beam 5.
Of the rectangular fixing piece 42 placed on the upper surface of the upper flange forming the L-shaped rectangular standing piece 9 arranged vertically in the longitudinal direction of the cantilever 4. As a metal fitting, the sagging tree 2 is fixed to the standing piece 9 by abutting the standing piece 9 on the side surface of the sagging tree 2 and fixing with screws. Mounting bracket 1
The fixing piece 42 of 0, the flange on said cantilever 4,4A top while fitting the spacer 12 between the flange lower surface of the top of the front beam 5 cantilever 4,4A, and front beams 5 Bolted to.

In this way, the eaves tip B can extend the eaves by the roof beams 3, the cantilever beams 4, 4A, and the rafters 2 which are structurally stable triangles, and the cross section of the rafters is supported for load support. It is not necessary to increase the size or to provide a pillar under the eaves, and the member cost can be reduced. The roof beam 3, the cantilever beams 4 and 4A, and the front beam 5 may be formed by using T-shaped steel, grooved steel or the like instead of lattice beams, H-shaped steel, and cantilever beams 4A on both sides. 4A may be fixed to the roof beam 3 according to the design plan of the house.

On the upper surface of the rafter 2 which is separated in parallel,
As shown in FIG. 2, a base plate 45 for forming a sloping roof is attached, and at the tip of the eaves, a wide dance 46 that abuts the outer edge of the base plate 45, and a nose cover that attaches to the outer end surface of the rafter 2. 47 are provided. Further, a ceiling plate 50 is installed between the lower end of the nose cover 47 and a curtain plate 49 of a small height attached to the outer end of the upper surface of the frame member 20A above the wall panel P to form an eave ceiling.
The inner end of the ceiling plate 50 is nailed to the outer surface of the curtain plate 49 with a rectangular parallelepiped beam 52 ... A gap 55 for ventilation of the attic is provided between the inner end of the and the wall panel P.

[0020]

Extended roof structure of the present invention as shown on the ordination, according to the present invention, the tilt
By providing the extended roof support frame to the roof beams for supporting the rafter which obliquely comprising a cantilever beam and a front beam, it is possible to increase the output of the eaves eaves, for example snow on the stairway, penetration of rain Can be prevented. In addition, the eaves frame structure that is structurally stable and has high strength can be formed by the rafters, roof beams, and cantilever beams, and columns are arranged under the eaves to carry the load that increases due to the large eaves. There is no need to increase the cross section of the rafter tree, and the cost can be reduced, and since the pillars can be eliminated, the eaves can be enlarged without impairing the appearance.

Further, since the standing piece of the mounting member fixed to the upper surface of the front beam is oriented in the length direction of the cantilever beam, the inclination angle of the rafter tree fixed to the standing piece is changed. Even at this time, the sagging tree can be fixed along the side surface of the sagging tree without changing the mounting fitting, and the number of kinds of members can be prevented from increasing and the cost can be reduced.

In addition, the fixing piece of the mounting bracket is a front beam.
Flange, rafters, bolted to the cantilever
The joint strength between the front beam and the cantilever beam is further increased in the support part of
To stabilize construction quality and improve durability.
It can be planned.

[Brief description of drawings]

FIG. 1 is a perspective view showing a house in which the present invention can be adopted.

FIG. 2 is a sectional view showing an embodiment of the present invention.

FIG. 3 is an exploded perspective view showing a main part thereof.

FIG. 4 is a plan view illustrating a roof beam and an extended roof support frame.

FIG. 5 is a cross-sectional view illustrating a conventional technique.

[Explanation of symbols]

2 rafter 3 roof beam 4 cantilever beam 5 front beam 6 extended roof support frame 9 standing piece 10 mounting bracket 42 fixed piece H house W outer wall

Claims (1)

(57) [Claims] 1. A roof beam, which is arranged along an outer wall of a house and supports a sag tree that extends diagonally downward beyond the outer wall,
An extended roof consisting of a cantilever beam extending at right angles to the roof beam and parallel to the outside, and a front beam connecting the ends of the cantilever beam and having the upper surface lower than the upper surface of the roof beam. A support frame is provided, and the front beam is provided with the upper surface of the front beam and a cantilever beam.
A flange that extends above the front beam and is mounted on this flange on the upper surface of the flange of the front beam.
Placed on the flange and fixed to the cantilever with bolts
An extension roof structure in which the rafter is fixed to the standing piece of a mounting bracket having a piece and a vertical standing piece that rises from the fixed piece and is arranged in the longitudinal direction of the cantilever.