JPS6237849Y2 - - Google Patents

Description

[Detailed description of the invention] [Technical field] This invention relates to the structure of the ceiling underlayment in an attached roof, and more specifically, to the combined structure of beams and rafters in roof panels used to construct small roofs attached to the exterior walls of buildings, such as entrance roofs and eaves.

[Background technology]

Generally, in this type of roof panel, a channel-shaped member with a C-shaped cross section is used as a beam, and a frame of the roof panel is created by intersecting a field edge on the underside of the beam. As shown in a, b, c, and d, the roof edge 2 is overlapped on the bottom surface of the beam 1, or the beam 1 is
The field edge 2 is placed in the notch 3 formed on the lower surface of the
Alternatively, the beam 1 and the field edge 2 are combined by fitting the lower part of the beam 1 into a notch 4 formed on the upper surface of the field edge 2. However, in the structure shown in Figure a, the thickness of the roof panel (not shown) that houses the frame made of the beam 1 and the roof edge 2 requires the total thickness (a + b) of both beams 1 and 2, and the thickness is increased. Therefore, there is a problem that the cross section of the beam 1 and the roof edge 2 cannot be made large for a roof panel with a uniform thickness, and there remains a problem in terms of strength. Although the edge 2 can be accommodated within the thickness c of the beam 1, there is a problem in that the notch 3 provided in the beam 1 causes a decrease in the strength of the beam 1 in this area. In the structure shown in d, although the thickness of the roof panel can be suppressed by fitting the roof edge 2 within the thickness c of the beam 1, the cutout 4 provided in the roof edge 2 In addition to weakening the strength of the notch 4, when nailing a ceiling board (not shown) to the lower surface of the field edge 2, when the nail driving point comes to the intersection of the beam 1 and the field edge 2, the notch 4
There was a problem in that the nail could not be driven in because it was obstructed by the wide part of the lower end of the beam 1 that fit inside.

[Purpose of invention]

The present invention was developed in view of the above points, and its main purpose is to make it possible to increase the cross-section of the beam and the field edge, and to increase the total thickness of both without causing a decrease in strength. To provide a structure of a ceiling base in an attached roof which can be minimized and where nails for fixing ceiling boards are not restricted by beams.

[Disclosure of invention]

In the structure of the ceiling base of the attached roof according to the present invention, an L-shaped cross section in which the lower horizontal piece of a groove-shaped member with a substantially C-shaped cross section is folded back into a vertical piece is used as a beam, and a beam is formed on the upper surface of a field edge that intersects with the beam. A structure is disclosed in which the lower end of the beam is fitted into the slit.

The present invention will be explained in detail below based on embodiments shown in the figures. The structure of the ceiling base of the attached roof according to the present invention consists of a beam 1 and a roof edge 2 that constitute the frame of a roof panel (not shown) used to form a roof attached to the outer wall of a building such as an entrance roof or eaves. As shown in FIG. The lower horizontal piece 7 is folded back onto one side of the vertical piece 5 to have a substantially L-shaped cross section, and the vertical piece 5 and this are inserted into the slit 8 formed on the upper surface of the field edge 2, as shown in FIG. Insert the folded lower horizontal piece 7 into the beam 1 and the edge 2
are combined in an intersecting manner. At this joint, as shown in FIG. 4, the beam 1 fits into the roof edge 2 at the thinner part at its lower end, so when nailing the ceiling board 10 placed on the lower surface of the roof edge 2, Even if the driving point of the nail 11 matches the joining point of the beam 1 and the field edge 2, the nail 11 can bypass the beam 1 and drive into the field edge 2, and the driving point of the nail 11 is limited. never be done.

[Effect of idea]

As described above, the present invention is based on the cross section L formed by folding the lower horizontal piece of a groove-shaped material having a substantially C-shaped cross section into a vertical piece.
The lower end of the vertical piece of the letter-shaped beam fits into the slit formed on the top surface of the field edge, and the beam and the field edge intersect, resulting in a decrease in the strength of the cross-sectional shape of the beam and field edge. Although it has a large shape, the total thickness of both can be kept to a minimum.
As a result, there is an advantage that the thickness of the roof panel that houses the framework made of the beams and the roof edge can be kept thin.Moreover, since the thin part of the lower end of the beam is accommodated in the roof edge, Even if a nail for fixing a ceiling board to the lower surface hits a beam, the advantage is that the nail can be avoided from hitting the beam, and there are no restrictions on where the nails can be driven.

[Brief explanation of the drawing]

Figures 1a, b, and c are perspective views showing conventional examples, respectively;
Fig. 1 d is a sectional view of section A in Fig. 1 c, Fig. 2 is an exploded perspective view showing an embodiment of the present invention, and Fig. 3 shows a groove-shaped material which is a preformed product of the beam used in the above. The perspective view and FIG. 4 are sectional views of the same as above, and 1 is a beam, 2 is a field edge, 5 is a vertical piece, 7 is a lower horizontal piece, and 8 is a slit.

Claims (1)

[Scope of utility model registration request] It has a beam and a field edge that constitute the framework of the roof panel, and the beam is formed into an L-shaped cross section formed by folding the lower horizontal piece of a groove-shaped material with a substantially C-shaped cross section into a vertical piece,
The structure of the ceiling base of an attached roof where the beam and the roof edge are combined by fitting the lower end of the vertical piece of the folded lower horizontal piece of the beam into the slit formed on the upper surface of the roof edge that intersects with the beam. .