JP2022076538A - Entrance porch - Google Patents

Abstract

To mainly simplify the constitution of a porch roof part in an entrance porch.SOLUTION: An entrance porch 3 has a porch roof part 4 provided on an upper part of the entrance part of a building 1, and a porch column 5 supporting the porch roof part 4 from below. The porch roof part 4 is provided with a roof panel 14 having an eaves base beam 11 positioned on an eaves base side, an eaves edge beam 12 positioned on an eaves edge side, and a rafter 13 extending from the eaves base side to the eaves edge side. The rafter 13 is at least partially divided into an eaves base rafter 15 positioned on the eaves base side, and an eaves edge rafter 16 positioned on the eaves edge side. The porch column 5 is designed to be attached to a division part 17 between the eaves base rafter 15 and the eaves edge rafter 16.SELECTED DRAWING: Figure 3

Description

The present invention relates to a front porch.

In buildings such as houses, an entrance porch is installed at the entrance. Some entrance porch has a porch roof portion provided on the upper part of the entrance portion and a porch pillar that supports the porch roof portion from below (see, for example, Patent Document 1).

Japanese Unexamined Patent Publication No. 10-252201

The existing entrance porch has a porch roof structure, for example, because the porch roof has a three-dimensional roof structure having an eave truss, an eave beam, and a pair of wife small walls. Was large and complicated.

Therefore, the main object of the present invention is to contribute to the improvement of the above-mentioned problems.

In response to the above problems, the present invention
An entrance porch having a porch roof provided at the upper part of the entrance of a building and a porch pillar that supports the porch roof from below.
The porch roof is
It has a roof panel with an eaves beam located on the eaves side, an eaves beam located on the eaves side, and rafters extending from the eaves side to the eaves side.
The rafters are at least partially divided into eaves rafters located on the eaves side and eaves rafters located on the eaves side.
The porch pillar is characterized in that it is attached to a divided portion between the eaves rafters and the eaves tip rafters.

According to the present invention, the configuration of the porch roof portion in the entrance porch can be simplified by the above configuration.

It is a perspective view of the entrance porch which concerns on this embodiment. It is a perspective view of the entrance porch which concerns on the modification of FIG. It is a vertical sectional view of the entrance porch of FIG. 1 as seen from the side. It is an enlarged view of the upper part of FIG. (A), (b) and (c) are diagrams showing in order an example of a manufacturing process of a roof panel constituting a porch roof portion. It is a perspective view which shows the state which the roof panel is lifted. (A), (b), and (c) are vertical cross-sectional views showing an example of a portion where the porch pillar is attached to the porch roof portion. It is a cross-sectional view of a porch pillar. It is a bottom view of the roof panel which shows the mounting state of the eaves ceiling material in a factory with respect to the roof panel. It is a perspective view which shows the state of the installation work of the entrance porch to a building. It is a side view which shows the state of the installation work of the porch roof part to a building. Of these, (a) is before mounting and (b) is after mounting. It is a side view (cross-sectional view) which shows the state of the installation work of the eaves parting material to the installation work space. It is a side view (cross-sectional view) of the holding member part attached to a building. (A) is a perspective view showing the inside corner of the building. (B) is an enlarged vertical sectional view showing a mounting portion of the porch roof portion with respect to the side surface of the inside corner portion. (A) is a perspective view of the entrance porch according to the comparative example. (B) is a cross-sectional view of a porch pillar on the entrance porch of the comparative example. It is a vertical sectional view of the entrance porch of FIG. 13A seen from the side. It is an enlarged view of the upper part of FIG. (A) and (b) are diagrams showing in order an example of a manufacturing process of a roof structure constituting a porch roof portion of a comparative example. It is a perspective view which shows the state which the porch roof part of the comparative example is lifted. It is a vertical cross-sectional view which shows the example of the attachment part of the porch pillar to the porch roof part of the comparative example. It is a figure which shows the attachment state of the eaves ceiling material in a factory to the porch roof part of the comparative example. Of these, (a) is a bottom view of the porch roof, (b) is a side view of one side of the porch roof, and (c) is a side view of the other side of the porch roof. It is a perspective view which shows the state of the attachment work of the entrance porch of the comparative example to a building. It is a side view which shows the state of the installation work of the porch roof part to a building.

Hereinafter, the present embodiment will be described in detail with reference to the drawings.
1 to 21 are for explaining this embodiment.

<Structure> Hereinafter, the configuration of this embodiment will be described.

As shown in FIG. 1, an entrance porch 3 is provided at a portion (entrance portion) of the entrance 2 of a building 1 such as a house.

The entrance porch 3 is assumed to have at least a porch roof portion 4 provided at the upper part of the entrance portion and a porch pillar 5 that supports the porch roof portion 4 from below.

Here, the building 1 may have any structure. In this embodiment, the building 1 is a unit building. The unit building is a building 1 that can be constructed in a short period of time by transporting a building unit 6 manufactured in advance at a factory to a construction site and assembling the unit building at the construction site. In the figure, it is assumed that the building 1 has the building unit 6b on the upper floor installed on the building unit 6a on the lower floor. The building unit 6a on the lower floor and the building unit 6b on the upper floor may be installed in a single unit or a plurality of units according to the plan of the building 1.

The entrance portion is the entrance 2 of the building 1 and the surrounding portion thereof. The door of the entrance 2 is provided in the building unit 6a on the lower floor.

The entrance porch 3 is an ancillary structure of the building 1 that forms a space for entering and exiting the entrance 2. There are a wide variety of entrance porch 3, but in the entrance porch 3 of this embodiment, the porch roof portion 4 and the porch pillar 5 are provided separately from the building 1 with respect to the building 1. It is supposed to be installed later. The entrance porch 3 can be attached to the building 1 at the time of new construction or remodeling.

On the ground outside the entrance 2 of the building 1, a porch floor 7 is formed in advance in a portion where the entrance porch 3 is installed. The pouch floor 7 is made of reinforced concrete, for example, and is placed on the ground together with the foundation of the building 1.

The upper part of the entrance portion is around the boundary portion between the building unit 6b on the upper floor and the building unit 6a on the lower floor, which is above the entrance 2 (door) in the building 1. Specifically, the lower part of the building unit 6b on the upper floor (FIG. 1) and the upper part of the building unit 6a on the lower floor (FIG. 1A) are the upper part of the entrance portion.

The porch roof portion 4 is a roof installed so as to protrude like an eave from a position above the entrance 2. At least a portion of the porch roof portion 4 on the eaves side is attached to the building 1. The porch roof portion 4 is manufactured in advance at the factory.

The porch roof portion 4 of this embodiment is mainly a gable type that inclines downward toward the eaves side. However, as shown in FIG. 1A, the porch roof portion 4 may be a flat type having the same height on the eaves side and the eaves side.

The porch pillar 5 is a pillar that supports the porch roof portion 4 (the portion near the eaves) from below. The porch pillar 5 is erected upward from the porch floor portion 7. The number of porch pillars 5 required is one or more.

In contrast to the above basic configuration, in this embodiment, the following configuration can be provided.

(1) As shown in FIG. 2 (FIG. 3), the pouch roof portion 4 is
It is provided with a roof panel 14 having an eaves beam 11 located on the eaves side, an eaves beam 12 located on the eaves side, and a rafter 13 extending from the eaves side to the eaves side.
At least a part of the rafters 13 is divided into an eaves rafter 15 located on the eaves side and an eaves rafter 16 located on the eaves side.
The porch pillar 5 is attached to the divided portion 17 of the eaves rafters 15 and the eaves rafters 16.

Here, the eaves side is the building 1 side of the porch roof portion 4. The portion of the porch roof portion 4 on the eaves side is directly attached to the building 1.

The eaves beam 11 is a beam-shaped member located on the most eaves side of the porch roof portion 4. The eaves beam 11 extends horizontally along the building 1. The eaves beam 11 is fixed to the building 1 in a state of being in contact with the building 1. The eaves beam 11 is installed with the plate surface (the surface extending in the longitudinal direction and the plate width direction) vertically oriented (the plate width direction is substantially vertically oriented).

The eaves side is the side of the porch roof 4 opposite to the building 1. The position of the eaves side supported by the porch pillar 5 may be any position on the eaves side of the eaves beam 11, but the eaves side is more than almost half of the distance from the eaves beam 11 to the tip of the eaves side. Is preferable.

The eaves beam 12 is a beam-shaped member of the porch roof portion 4 located on the eaves side of the eaves beam 11. The eaves beam 12 is extended substantially parallel to the eaves beam 11. The eaves beam 12 is installed with the plate surface facing vertically. The eaves beam 12 may be provided in a single number or a plurality of eaves beams 12 depending on the required strength.

The rafter 13 is a member extending in a direction orthogonal to the eaves beam 11 and the eaves beam 12 when viewed in a plane. The rafter 13 is extended from the eaves beam 11 toward the eaves side so as to exceed the eaves beam 12. A plurality of rafters 13 are provided along the longitudinal direction of the eaves beam 11 and the eaves beam 12 with a required interval.

The roof panel 14 is a panel constituting the porch roof portion 4. For example, the roof panel 14 is assembled by the procedure shown in FIGS. 4A to 4C, and the hanging tool 25 is attached as shown in FIG. It is easy to handle so that it can be attached and lifted vertically with a wire 26. For assembling the roof panel 14, fixing members 27 such as screws, nails, bolts and nuts, fixing metal fittings, reinforcing materials and the like are appropriately used.

The roof panel 14 has a roof surface material 18 (FIG. 3) such as a roof base material and a roof finishing material attached to the upper surface of a panel frame 14a composed of at least the eaves beam 11, the eaves beam 12, and the rafters 13. It is a face plate-like structure. The roof panel 14 is integrally attached to the building 1 by directly fixing the eaves beam 11 to the building 1 in a state of being in direct contact with the building 1.

As the rafters 13, those that are not divided into the eaves root rafters 15 and the eaves tip rafters 16 (for example, the end rafters 21 and the middle rafters 22 in FIG. 4C) can also be used. A fascia material 23 parallel to the eaves beam 11 and the eaves beam 12 is attached to the eaves side ends of the eaves rafters 16 and 13 (end rafters 21, middle rafters 22) in the panel frame 14a. The fascia material 23 is installed with the plate surface facing vertically.

The eaves rafters 15 are divided pieces of the rafters 13 located on the eaves side. The eaves rafters 15 are installed with the board surface facing vertically.

The eaves rafters 16 are divided pieces of the rafters 13 located on the eaves side. The eaves rafters 16 are installed with the board surface facing vertically. The eaves rafters 16 are shorter than the eaves rafters 15.

In the roof panel 14, the eaves beam 11, the eaves beam 12, the rafters 13 (the eaves rafters 16, the eaves rafters 15, the end rafters 21, and the middle rafters 22) and the fascia material 23 have almost the same board width, respectively. It is installed with the board facing vertically.

As shown in FIGS. 6A to 6C, the divided portion 17 is a boundary portion between the eaves rafters 15 and the eaves rafters 16. A mounting bolt 24 for mounting the upper end portion of the pouch pillar 5 is installed in the divided portion 17. The mounting bolt 24 is attached to the portion of the eaves beam 12 and is projected downward from the lower surface of the roof panel 14.

As shown in FIG. 7, the porch column 5 is a pair of column covers 5d, 5e made of aluminum and having a semi-cylindrical shape of a metal column 5c having a C-shaped cross section having a web portion 5a and a pair of flange portions 5b. It is a columnar one that is covered with a screw 5f and fixed to the metal pillar 5c with a screw 5f.

The pair of semi-cylindrical pillar covers 5d and 5e have a substantially uniform wall thickness as a whole, and can be formed of an extruded material or the like. The pillar covers 5d and 5e may be post-processed to form an uneven pattern or the like on the surface.

Inside the middle portion in the circumferential direction of one of the pillar covers 5d, the two corner portions between the web portion 5a and the flange portion 5b of the metal pillar material 5c can be locked and held from the outside in a substantially Y-shape in a plan view. The locking holding portion 5g is integrally formed at two locations.

Further, on both ends of one of the pillar covers 5d, mounting pieces 5h extending inward of the pouch pillar 5 are integrally provided at positions facing the flange portion 5b of the metal pillar material 5c. The mounting piece 5h has a vertical portion 5i that is substantially perpendicular to the flange portion 5b and extends to a length that reaches the flange portion 5b. Further, the mounting piece 5h has a parallel portion 5j extending in parallel with the flange portion 5b from the tip end portion of the vertical portion 5i toward the tip end portion of the flange portion 5b. The parallel portion 5j has a length that reaches or does not reach the tip portion of the flange portion 5b. Then, in a state where the parallel portion 5j of the mounting piece 5h is in contact with the web portion 5a from the outside, the parallel portion 5j of the mounting piece 5h and the web portion 5a are fixed in a straight line from the outside with a screw 5f.

The mating portions of the pair of pillar covers 5d and 5e are provided with fitting portions 5k and 5l that can be fitted to each other in a concavo-convex manner. One fitting portion 5k is a detachable hinge-shaped portion. The other fitting portion 5l is a detachable claw locking portion. The other fitting portion 5l is fixed by a screw (such as a countersunk screw) that is smaller than the screw 5f and is inconspicuous from the outside. The screw 5f is hidden inside the pouch pillar 5 by attaching the other pillar cover 5e to one pillar cover 5d via the fitting portions 5k and 5l.

With such a structure, the porch pillar 5 can reduce the number of parts and man-hours by simplifying the structure, so that the cost can be reduced and the pillar cover 5b can be easily attached and the appearance can be improved.

(2) As shown in FIGS. 6A to 6C, the eaves beam 12 is sandwiched between the eaves rafters 16 and the eaves rafters 15 with respect to the divided portion 17, and the eaves rafters 16 and the eaves rafters 15 are formed. It may be installed in a state where it does not come out from the top and bottom.

Here, being sandwiched between the eaves rafters 16 and the eaves rafters 15 means that the eaves beam 12 is interposed between the end of the eaves rafters 16 on the eaves side and the end of the eaves rafters 15 on the eaves side. Is to be done. The eaves-side end of the eaves rafter 16 is abutted and fixed to the eaves-side surface of the eaves beam 12, and the eaves-side end of the eaves rafter 15 is abutment-fixed to the eaves-side surface of the eaves beam 12. The abutment is fixed.

The state in which the eaves rafters 16 and the eaves rafters 15 do not protrude vertically means that the upper edge of the eaves beam 12 is at the same height as or lower than the upper edges of the eaves rafters 16 and the eaves rafters 15, and the eaves eaves. The lower edge of the beam 12 is at the same height as or higher than the lower edge of the eaves rafters 16 and the eaves rafters 15.

(3) As shown in FIG. 8, on the lower surface of the roof panel 14, the eaves ceiling material 33 covers the lower surface of the roof panel 14 except for the portion that becomes the mounting work space 31 of the roof panel 14 with respect to the building 1. It may be attached directly (shaded area).
The portion to be the mounting work space 31 may be at least a strip-shaped portion along the outer wall 32 (FIG. 3) of the building 1.

Here, the lower surface of the roof panel 14 is the lower surface of the roof panel 14, as shown in FIG.

The mounting work space 31 is an open portion (a factory non-installed portion of the eaves ceiling material 33) provided under the roof panel 14, and the mounting work space 31 is necessary for mounting the roof panel 14 on the building 1. It is formed to the minimum size. The mounting work space 31 is between the eaves beam 11 and the horizontal member 34 mounted substantially parallel to the eaves beam 11 at a position on the eaves side slightly away from the eaves beam 11 of the roof panel 14. It is formed.

The outer wall 32 is an outdoor wall constituting the side surface of the building 1. The outer wall 32 is mainly a portion above the entrance 2 on the side surface of the building 1 where the entrance 2 is provided.

The strip-shaped portion along the outer wall 32 of the building 1 is a space on the lower surface of the roof panel 14 that is close to the outer wall 32 and parallel to the outer wall 32. In this embodiment, the strip-shaped portion along the outer wall 32 of the building 1 in which the mounting work space 31 is provided is laid horizontally from the eaves beam 11 along the eaves beam 11 mainly on the lower surface of the roof panel 14. It covers the entire area of the uniform width that is almost equal to the distance to the member 34.

The eaves ceiling material 33 is a decorative material that forms the design of the lower side of the porch roof portion 4. The eaves ceiling material 33 is pre-mounted at the factory on almost the entire lower surface of the roof panel 14 other than the mounting work space 31. The eaves ceiling material 33 is installed between the horizontal member 34 and the fascia material 23 so as to form a continuous surface.

(4) As shown in FIG. 9, the eaves beam 11 may be fastened and fixed by using bolts 41 projecting from the outer wall 32 of the building 1.

Here, as shown in FIGS. 10A and 10B, the bolt 41 is provided on the indoor side or the outdoor side of the vertical base material 42 (for example, a stud) for attaching the outer wall 32 to the building 1. The reinforcing material 43, the horizontal member 44, and the like are attached to the reinforcing material 43, and the reinforcing material 43, the base material 42, the horizontal member 44, and the outer wall 32 are installed horizontally so as to penetrate substantially vertically. The bolt 41 is installed so that the bolt head at the base end is fixed to the reinforcing material 43 with a fixing member 41a such as a screw screw, and the tip portion protrudes from the outer wall 32 to the outdoor side.

In the eaves beam 11, the eaves beam 11 is substantially perpendicular to the position where the bolt insertion hole 45 through which the bolt 41 is passed with the plate surface in surface contact with the outer wall 32 matches the bolt 41 of the outer wall 32. It is provided in advance so as to penetrate the.

The eaves beam 11 has legs attached to the tip of the bolt 41 that has passed through the eaves beam 11 and protruded to the inside of the porch roof 4 after passing the tip of the bolt 41 through the bolt insertion hole 45. It is fixed by tightening the nut 47 through the washer 46.

It is preferable that the fastening and fixing work of the eaves beam 11 with the bolt 41 is performed in a state where the eaves beam 11 is stably held with respect to the outer wall 32. Therefore, as shown in FIG. 9, a holding member 48 for holding the eaves beam 11 in a state of being in contact with the outer wall 32 may be attached to the outer wall 32. The holding member 48 is preferably provided in the vicinity of the bolt 41, laterally separated from the bolt 41. In this embodiment, a pair of left and right holding members 48 are provided along the outer wall 32 at intervals in the horizontal direction, and a pair of bolts 41 are provided on both sides (outside) of the pair of left and right holding members 48. ..

The holding member 48 is preferably a locking member that supports the lower part of the eaves beam 11 from below. An L-shaped angle metal fitting can be used for the locking member. The L-shaped angle metal fitting is assumed to have, for example, a contact surface 48a that abuts on the outer wall 32 and a locking surface 48b that supports the lower portion of the eaves beam 11 from below. The contact surface 48a is a vertical surface parallel to the outer wall 32, and is fixed to the outer wall 32 in a lateral contact state from the outside by a fixing member 49 (FIG. 11A) such as a screw screw or a nail. The locking surface 48b is parallel to the lower end surface of the eaves beam 11, and is a horizontal surface having a length substantially equal to or longer than the thickness of the lower end surface of the eaves beam 11, and is below the contact surface 48a. It protrudes almost horizontally from the edge toward the eaves. The angle metal fitting to be the holding member 48 can be formed by bending a single metal plate.

In this way, by attaching the holding member 48 (locking member) to the outer wall 32 of the building 1 side by side with the bolt 41, the eaves beam 11 can be locked and held by the holding member 48, so that the eaves beam 11 can be locked and held to the outer wall 32 of the eaves beam 11. Can be easily fastened and fixed in a stable state.

(5) As shown in FIG. 11 (FIG. 11A), the eaves parting material 51 extending laterally may be attached to the attachment work space 31 on the lower surface of the roof panel 14 from below.

Here, the eaves parting material 51 is a metal decorative member attached to a boundary portion (parting part) between the outer wall 32 of the building 1 and the porch roof portion 4.
The eaves parting member 51 is a long member having a width dimension and a length dimension that cover the mounting work space 31. The eaves parting material 51 has at least a uniform width dimension substantially equal to the distance from the eaves beam 11 to the horizontal member 34 and a length dimension substantially the same as the eaves beam 11, and the eaves ceiling material 33. It is mainly composed of surfaces that are installed almost parallel to. The eaves parting material 51 is installed in the mounting work space 31 from below, and the both side edges are attached to the eaves beam 11 and the horizontal member 34 from the bottom to the top by fixing members 52 such as screws and nails. Be done. The fixing member 52 on the eaves beam 11 side may be attached to the locking surface 48b of the holding member 48 at the position where the holding member 48 is located.

As another embodiment, for example, as shown in FIG. 12A, the entrance porch 3 can be installed on the inside corner portion 55 (retracted corner portion) of the building 1, but in this case, the entrance porch 3 can be installed. Regarding the side of the side wall portion 56 of the building 1 forming the inside corner portion 55, the porch pillar 5 may be eliminated and the portion of the porch roof portion 4 on the side wall portion 56 side may be directly attached to the side wall portion 56. good. At this time, as shown in FIG. 12B, the portion of the porch roof portion 4 on the side wall portion 56 side side surface near the eaves is directly attached to the side wall portion 56 by a fixing member 57 such as a screw screw or a nail. Can be done.

At this time, it is necessary to appropriately provide another mounting work space on the lower surface side of the mounting portion 58 (circled portion in FIG. 9) of the porch roof portion 4 with respect to the side wall portion 56 forming the inside corner portion 55. preferable. Another mounting work space may be provided over the entire side surface of the pouch roof portion 4 along the side wall portion 56, or may be provided locally only around the mounting portion 58. For another installation work space, the same parting material as the eaves parting material 51 may be installed, but the eaves ceiling material 33 of the same size as the other installation work space may be installed later at the construction site to install the eaves ceiling. It is preferable that the material 33 closes another mounting work space.

Further, another holding member 59 (angle metal fitting) similar to the holding member 48 is attached to the side wall portion 56 forming the inside corner portion 55 of the building 1, and the pouch roof portion 4 is provided with another holding member 59. The side surface (end rafter 21) on the side of the inside corner 55 may be attached and fixed while the portion on the eaves side is directly held.

After the porch roof 4 is installed in the building 1, a metal gable plate, a steel plate at the tip of the nose, an eaves gutter, or the like is attached to the periphery of the porch roof 4.

<Action> The action of this example will be described below.

Up to now, the entrance porch 101 as shown in the comparative examples of FIGS. 13 to 21 has been attached to the entrance portion of the building 1.

Hereinafter, the entrance porch 101 of the comparative example will be described.

The porch roof 102 of the existing entrance porch 101 as shown in FIGS. 13 to 15 has, for example, an eaves truss 103, an eaves beam 104, and a pair of wife small walls 105, as shown in FIG. It had a three-dimensional roof structure. Therefore, the configuration of the porch roof portion 102 is complicated.

As shown in FIG. 17, since the porch roof 102 has a three-dimensional roof structure, the porch roof 102 must be lifted carefully while keeping it horizontal, and the porch. Since it was not easy to invert the roof 102, for example, the partial attachment of the eaves ceiling material 107 to the porch roof 102 in the factory is performed from below without inverting the porch roof 102. The work had to be done upwards, and the workability was poor.

As shown in FIG. 18, the eaves beam 104 was located below the eaves side portion of the rafter 13 and the wife small wall 105, and was installed so as to be visible from the outside. A beam cover 106 was needed to cover it.

Further, as shown in FIG. 15, since the main portion of the eaves ceiling material 107 is horizontally installed below the main body of the porch roof portion 102 in a state separated from the main body, the eaves ceiling material 107 is provided. The eaves truss 103 will be used to horizontally install the porch roof under the main body of the porch roof 102 away from the main body, and between the side surfaces of the main body of the porch roof 102 and the eaves ceiling material 107. The wife's small wall 105 was used to close the gap.

Since the main part of the eaves ceiling material 107 was attached at the construction site, as shown in FIG. 19, the amount or area of the eaves ceiling material 107 that can be attached in advance to the main body of the pouch roof portion 102 at the factory. Was few (shaded area).

As shown in FIG. 20, when the pouch roof portion 102 is attached to the building 1, as shown in FIG. 21, nailing fixing for vertical load bearing to the upper part of the eaves truss 103 (nailing fixing portion 103a). ) And bolt fixing for horizontal load bearing to the lower part of the eaves truss 103 (bolt fixing portion 103b) were performed separately at two positions above and below the building 1. Therefore, the installation of the porch roof portion 102 involves installation work with a height difference, which is troublesome to install.

As shown in FIG. 13B, the pouch pillar 108 had a rectangular cross section. That is, the porch pillar 108 having a rectangular cross section covers the four sides of the metal pillar 108a having a rectangular cross section with a half-split rectangular pillar cover 108b made of an inorganic material, and each side is covered with a screw 109 from the outside. I was trying to fix it to. Therefore, the porch pillar 108 is costly, and it takes time and effort to attach the pillar cover 108b.

Therefore, the entrance porch 101 has a lot of room for improvement.

Therefore, in this embodiment, the porch roof portion 4 used for the entrance porch 3 has a panel structure using the roof panel 14. Since the roof panel 14 has a simpler structure and is easier to handle than the roof structure, it can be expected to improve the mounting workability for the building 1.

Hereinafter, an example of a specific manufacturing process of the roof panel 14 will be described.

First, as shown in FIG. 4A, the end of the eaves side of the plurality of eaves rafters 16 toward the eaves side on the surface of the eaves side of the single or a plurality of stacked eaves beams 12 is attached to the eaves beam 12. Install with the required spacing in the longitudinal direction of the. A fascia material 23 is attached to the end of the eaves rafter 16 on the eaves side in parallel with the eaves beam 12. Then, a rafter 22 is attached between one end of the eaves beam 12 and the vicinity of one end of the fascia material 23 to form a panel portion on the eaves side. In this figure, the fascia material 23 has a longer end on one side than the eaves beam 12.

Next, as shown in FIG. 4B, the end rafters 21 are attached to one end of the fascia material 23 in parallel with the middle rafters 22. The eaves beam 11 is attached to the ends of the middle rafters 22 and the end rafters 21 on the eaves side in parallel with the eaves beam 12. Then, the eaves beam 11 and the opposite ends of the eaves beam 12 are connected by the eaves rafters 15, and the outer shape of one large panel frame 14a including the panel portion on the eaves side and the panel portion on the eaves side is included. To form. In this figure, the eaves beam 11 has almost the same length as the fascia material 23.

Then, a plurality of eaves rafters 15 are attached to the inside of the panel portion on the eaves side so as to be located on the same straight line as each eaves rafters 16 to finish the panel frame 14a. The eaves rafter 15 has an end on the eaves side attached to the surface of the eaves beam 12 on the eaves side, and an end on the eaves side attached to the surface of the eaves beam 11 on the eaves side.

The configuration and manufacturing process of the panel frame 14a are not limited to the above. For example, the panel portion on the eaves side and the panel portion on the eaves side are formed separately, and the panel portion on the eaves side and the panel portion on the eaves side are formed separately. The panel portion may be integrally connected later by the end rafters 21 and the middle rafters 22 to form one panel frame 14a. Further, for example, in the panel frame 14a, after the eaves rafters 16 and the eaves rafters 15 are attached to both sides of the eaves beam 12 to form an inner portion, the middle rafters 22, the end rafters 21, the eaves beam 11, and the nose are formed around the inner rafters. It may be manufactured by attaching the hiding material 23.

Then, as shown in FIG. 5, the panel frame 14a is attached by attaching the hanging tool 25 to the edge of either the eaves side or the eaves side of the panel frame 14a at about two places and attaching the wire 26 to the hanging tool 25. The roof panel 14 is manufactured by allowing it to be lifted or inverted in the vertical direction and appropriately attaching a face material (roof surface material 18, eaves ceiling material 33, etc.) to the upper surface or the lower surface of the panel frame 14a.

By manufacturing the porch roof part 4 composed of such roof panels 14 to a state close to completion at the factory, transporting it to the construction site, and attaching it to the building 1 at the construction site, the entrance porch can be installed with less on-site work. 3 can be formed.

To attach the porch roof portion 4 to the building 1, a bolt 41 and a holding member 48 are attached to the outer wall 32 of the building 1, and the holding member 48 locks and holds the eaves beam 11 of the roof panel 14 to stabilize it. In this state, the eaves beam 11 is fastened and fixed by using bolts 41 projecting from the outer wall 32 of the building 1. As a result, the porch roof portion 4 can be easily attached to the building 1 on the eaves side in a stable state. The eaves side of the porch roof portion 4 is supported by the porch floor portion 7 by the porch pillar 5.

<Effect> According to this embodiment, the following effects can be obtained.

(Effect 1) In the entrance porch 3, the porch roof portion 4 may have a panel structure. By forming the porch roof portion 4 into a panel structure using the roof panel 14, the structure of the porch roof portion 4 is simplified and easy to handle. Further, by forming the porch roof portion 4 with the roof panel 14, the porch roof portion 4 can reduce the man-hours for assembling. By configuring the porch roof portion 4 with the roof panel 14, the porch roof portion 4 can be easily lifted during assembly, transportation, and the like. Further, by forming the porch roof portion 4 into a panel structure using the roof panel 14, for example, it is possible to facilitate the transportation of the porch roof portion 4 to the construction site and the installation at the construction site.

Therefore, the porch roof portion 4 is provided with a three-dimensional roof structure having an eaves truss 103, an eaves beam 104, and a wife small wall 105, such as the porch roof portion 102 of the comparative example. In comparison, the configuration can be simplified.

Then, the porch roof portion 4 may divide the rafters 13 into eaves rafters 15 and eaves rafters 16. As a result, the porch roof portion 4 can increase the structural freedom of the roof panel 14.

For example, a panel portion on the eaves side in which the roof panel 14 is connected between the eaves beam 11 and the eaves beam 12 by an eaves rafter 15, and a panel portion on the eaves side in which the eaves rafter 16 is attached to the eaves beam 12. As a configuration divided into the above, it is possible to connect the panel portion on the eaves side and the panel portion on the eaves side to form an integrated structure. As a result, the roof panel 14 can be made to have higher strength, is easy to make, and is easy to handle.

Further, by attaching the porch pillar 5 to the divided portion 17 between the eaves rafter 16 and the eaves rafter 15 of the roof panel 14, the roof panel 14 sets the divided portion 17 at a position suitable for attaching the porch pillar 5. Therefore, the high-strength portion of the roof panel 14 can be reliably supported by the porch pillar 5. Then, a mounting bolt 24 and a mounting seat for mounting the pouch pillar 5 can be easily provided on the divided portion 17. The porch pillar 5 can be easily attached to the divided portion 17 by using the mounting bolt 24 and the mounting seat.

Further, by making the porch roof portion 4 a panel structure using the roof panel 14, for example, the roof panel 14 can be easily inverted. Therefore, the eaves ceiling material 33 can be attached to the roof panel 14 by inversion. Workability can be improved because it can be easily performed by downward work from above in the state of being.

(Effect 2) By forming the eaves beam 12 between the eaves rafters 16 and the eaves rafters 15, the porch roof portion 4 appropriately increases the number of eaves beams 12 installed according to the specifications of the entrance porch 3. It is possible to freely set and adjust the strength of the roof panel 14 itself and the strength of the support portion by the porch pillar 5 depending on the number of installed eaves beams 12. The number of the eaves beam 12 may be, for example, two as shown in FIG. 6 (a), three or more as shown in FIG. 6 (b), or the number of the eaves beam 12 may be three or more, or the number of the eaves beam 12 may be three or more. ), At least one thick one may be used among at least a plurality of sheets.

In the entrance porch 3, the porch roof portion 4 may be installed so that the eaves beam 12 does not protrude vertically from the eaves rafters 16 and the eaves rafters 15. As a result, the porch roof portion 4 is an existing one in which the installation position of the eaves beam 12 is not below the lower surface of the roof panel 14 or the position of the eaves ceiling material 33, but above the eaves ceiling material 33. Since the position is higher than that, the eaves beam 12 can be hidden in the panel frame 14a of the roof panel 14 and installed, and the appearance of the porch roof portion 4 can be improved.

Then, the porch roof portion 4 hides the eaves beam 12 in the panel frame 14a of the roof panel 14, so that the eaves beam 12 cannot be seen from the outside. Therefore, the beam cover 106 (FIG. 18) covering the eaves beam 12 is eliminated. Can be done. Therefore, the cost of the porch roof portion 4 can be reduced by eliminating the need for the beam cover 106.

In the porch roof portion 4, the installation position of the eaves beam 12 is higher than that of the existing one, so that the eaves beam 12 can be positioned at the same floor (upper floor) as the eaves beam 11. Therefore, for example, when the entrance porch 3 is attached to the entrance portion 55 of the building 1, the attachment positions of the eaves beam 12 and the eaves beam 11 with respect to the building 1 are at the same floor height, so that the porch roof portion 4 is It is also possible to reduce the height difference between the eaves beam 12 and the eaves beam 11 with respect to the building 1 to facilitate the work.

(Effect 3) In the entrance porch 3, the porch roof portion 4 may have a structure in which the eaves ceiling material 33 is directly attached to the lower surface of the roof panel 14 so as to cover the lower surface of the roof panel 14. This makes it possible and easy for the porch roof portion 4 to manufacture the roof panel 14 in a state where most (almost the entire surface) of the eaves ceiling material 33 is integrally attached to the roof panel 14 at the factory in advance. As a result, the porch roof portion 4 can be finished to a high degree of perfection at the factory, and the quality and accuracy can be improved. As a result, the porch roof portion 4 can reduce the man-hours for attaching the face material (for example, the eaves ceiling material 33 and the eaves parting material 51) to the lower surface side of the roof panel 14 on site.

The porch roof portion 4 may have the eaves ceiling material 33 attached to the lower surface of the roof panel 14 with at least the mounting work space 31 removed. As a result, the roof panel 14 can be attached to the building 1 without any trouble by using the attachment work space 31. By making the mounting work space 31 a strip-shaped portion along the outer wall 32 of the building 1, the mounting work space 31 is minimized, and the mounting work space 31 can be easily closed at the construction site.

Further, by directly attaching the eaves ceiling material 33 to the lower surface of the roof panel 14 at the factory, for example, in the case of a gable type in which the porch roof portion 4 inclines downward toward the eaves side, the porch roof portion 4 can be used. For example, as in the porch roof portion 102 of the comparative example of FIG. 13, it is not necessary to provide an eaves truss 103 below the main body of the porch roof portion 102 for horizontally installing the eaves ceiling material 107 away from the main body. Can be done.

At the same time, the porch roof portion 4 has a side surface of the main body of the porch roof portion 102 and the eaves ceiling material 107 horizontally installed below the main body, as in the case of the porch roof portion 102 of the comparative example. It is possible to eliminate the wife small wall 105 for closing the gap between them. Therefore, the cost of the porch roof portion 4 can be reduced by eliminating the need for the wife small wall 105 and the eaves truss 103.

(Effect 4) In the entrance porch 3, the porch roof portion 4 allows the eaves beam 11 of the roof panel 14 to be fastened and fixed to the outer wall 32 of the building 1 by a bolt 41 projecting from the outer wall 32 of the building 1. good. As a result, the porch roof portion 4 is supported by the outer wall 32 of the building 1 with a horizontal load via bolts 41. By fastening and fixing with bolts 41, the pouch roof portion 4 can be easily fixed to the outer wall 32 of the building 1 on the eaves side of the roof panel 14. Further, in the porch roof portion 4, since the attachment portion of the roof panel 14 to the building 1 on the eaves side is only the eaves beam 11, there is no difference in height in the work, and the work height when fixing the eaves beam 11 is eliminated. By the way, it is possible to reduce the work load by reducing the change in the work posture. Therefore, the porch roof portion 4 improves the workability of attaching the roof panel 14 to the building 1.

Further, by fastening and fixing with bolts 41, the pouch roof portion 4 can fix the eaves beam 11 only with a thin tool such as a ratchet wrench. Therefore, since the mounting work space 31 set on the lower surface of the roof panel 14 can be reduced in the porch roof portion 4, the mounting area of the eaves ceiling material 33 to be mounted in advance on the lower surface of the roof panel 14 can be increased accordingly. ..

(Effect 5) In the entrance porch 3, the porch roof portion 4 may have a laterally extending eaves parting material 51 attached to the attachment work space 31 on the lower surface of the roof panel 14 from below. As a result, the porch roof portion 4 can easily close the mounting work space 31 provided on the eaves side of the lower surface of the roof panel 14 by using the eaves parting material 51 prepared separately from the eaves ceiling material 33. can. Further, it is possible to eliminate the need to partially attach the eaves ceiling material 33 to the attachment work space 31 later. The roof panel 14 to which the eaves ceiling material 33 is pre-attached to most of the lower surface is a pouch roof portion 4 that looks good with less work at the construction site by blocking the attachment work space 31 with the eaves parting material 51. Can be finished to. Further, the parting portion between the porch roof portion 4 and the building 1 can be finished with a good appearance by the eaves parting material 51.

1 Building 2 Entrance 3 Entrance porch 4 Porch roof 5 Pouch pillar 11 Eaves beam 12 Eaves beam 13 Rafters 14 Roof panel 15 Eaves rafters 16 Eaves rafters 17 Divided part 31 Mounting work space 32 Outer wall 33 Eaves Ceiling material 32 Outer wall 41 Bolt 51 Eaves parting material

Claims (5)

An entrance porch having a porch roof provided at the upper part of the entrance of a building and a porch pillar that supports the porch roof from below.
The porch roof is
It has a roof panel with an eaves beam located on the eaves side, an eaves beam located on the eaves side, and rafters extending from the eaves side to the eaves side.
The rafters are at least partially divided into eaves rafters located on the eaves side and eaves rafters located on the eaves side.
The porch pillar is a front porch characterized in that it is attached to a divided portion between the eaves rafters and the eaves rafters. The entrance porch according to claim 1.
The eaves beam is characterized in that it is sandwiched between the eaves rafters and the eaves rafters with respect to the divided portion, and is installed in a state where the eaves rafters and the eaves rafters do not protrude vertically. Entrance porch. The entrance porch according to claim 1 or 2.
On the underside of the roof panel,
It is characterized in that the eaves ceiling material is directly attached so as to cover the lower surface of the roof panel except for the portion along the outer wall of the building, which is at least a work space for attaching the roof panel to the building. Entrance porch. The entrance porch according to any one of claims 1 to 3.
The entrance porch is characterized in that the eaves beam is fastened and fixed by using bolts projecting from the outer wall of the building. The entrance porch according to claim 3 or claim 4, which cites claim 3.
An entrance porch characterized in that a laterally extending eaves parting material is attached from below to the attachment work space on the lower surface of the roof panel.

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