JPH0415849Y2 - - Google Patents

Description

[Detailed explanation of the idea] This idea involves constructing a horizontal frame member (generally called a front girder) at the upper end of the building support, and supporting the rafters that receive the roofing material from below on top of the horizontal frame member. The present invention relates to a rafter receiving structure for attaching a rafter receiving member.

In this type of rafter support structure, rafter support members have been used conventionally. This is because if the weight of the rafters is applied locally only to the front edge of the front spar, which is the horizontal frame material, problems such as twisting of the front spar due to the load will occur, especially during snowy conditions. In order to prevent this inconvenience from occurring, the load is applied evenly to the parts. However, in many cases, the angle of the rafter supports is fixed and cannot be adjusted, and those that can be adjusted have complex structures and unreliable load-bearing properties.

This invention solves the above-mentioned drawbacks. It consists of a combination of the front spar body and the rafter receiving member, and the angle of the rafter receiving member relative to the front spar body can be set arbitrarily within a certain range, and the angle of the rafter receiving member can be set arbitrarily within a certain range. The purpose of this invention is to provide a front beam for a rafter support that can easily withstand loads regardless of the situation.

Next, an embodiment of this invention will be described based on the drawings.

Reference numeral 1 is a support for a sunroom that is erected at a distance from the house H. The front girder P of the proposed project is installed between the upper ends of the left and right supports 1 and 1, and this supports the rafters 2 of the roof and supports the front beam. A space between the girder P and the roof plate 3 is sealed with a windshield plate 4.

The front spar P is composed of a front spar main body Pa and a rafter receiving member Pb having the same length. Among them, the front spar main body Pa is extruded completely hollow, and forms an arc-shaped wall 5 whose outer peripheral surface protrudes semicircularly at the upper end.
The arcuate wall 5 is provided with a thick portion 8 to strengthen the screwing force of the screw 7 for fixing the rafter receiving member Pb, and the thick portion 8 is formed to be wide. Reference numerals 6 and 9 are screw pockets for screwing onto the pillar 1, and reference numeral 10 is a mounting groove into which the shoji 11 is fitted.

The rafter receiving member Pb has support pieces 13, 14, and 15 for the rafters 2 protruding from both front and rear ends and the center of the seat plate 12, and the width of the seat plate 12 is narrower than the arcuate wall 5 of the front spar body Pa. , the lower surface is formed into an arcuate surface that joins the outer peripheral surface of the arcuate wall 5. That is, the outer peripheral surface of the arcuate wall 5 and the lower surface of the seat plate 12 are both circles R ₁ of equal curvature,
It is an arc surface of R ₂ . In addition, the front support piece 13 and the center support piece 15 form a blind groove 16 in which the windshield plate 4 is hung, and the rear support piece 14 is tilted rearward, and at its tip there is a connection piece that is fixed to the rafter 2 with screws 17. 18 is provided so as to protrude rearward, so that the connecting piece 18 is located at the rear where the screw 17 can be easily operated. Furthermore, a condensation water guide groove 19 is formed between the center support piece 15 and the rear support piece 14, so that when the condensation water generated on the back surface of the roof board 3 flows down through the windshield plate 4, the condensation water is guided. Groove 19 to post 1
The water is drained to the outside through a drainage groove 26.

The windshield plate 4 is provided with bifurcated legs 20 and 21 at the lower end,
By its bifurcated legs 20, 21, the rafter receiving member Pb
The guide groove 1 seals the bag groove 16 and directs condensed water on the roof board
It has a structure that leads to 9, and also has packing 2 at the top end.
2 is attached to improve the airtightness between the roof sheet 3 and the roof sheet 3, and the packing 22 is designed to supplementally support the roof sheet 3.

The front spar P of this invention has the above structure, so when assembling it, first erect the front spar main body Pa between the pillars 1 and 1, and lightly temporarily fasten the suspension receiving member Pb on top of it with a rubber ring, etc. . Then, the front digit body Pa
Since the receiving member Pb on the outer peripheral surface of the arcuate wall 5 is in a state where it can rotate, when the rafter 2 is hung on the receiving member Pb at a predetermined angle, either the front or rear support piece 1
Even if the rafter 2 is placed only on the receiving surface 13a (or 14a) at the upper end of 3, 14, the receiving member Pb rotates in the direction in which it is placed, so the other receiving surface 14a (or 13a) is also placed on the lower surface of the rafter 2. to be joined to. However, if the rotation of the receiving member Pb is not smooth due to friction and is insufficient, the receiving member Pb may be assisted by hand.
Rotate Pb.

In any case, the front and rear receiving surfaces 13 for the rafters 2
By joining a and 14a, the receiving member Pb is in the correct position relative to the front spar main body Pa, so in this state, the receiving member Pb is fixed to the front spar main body Pa and the rafter 2 with screws 7 and 17.

In this way, the front spar main body Pa and the rafter support member Pb can be assembled correctly in the process of constructing the frame of a sunroom, etc., but even before construction,
If the inclination angle of the rafter 2 is known, it can be assembled correctly according to it, and in that case, it is preferable to use the horizontal lower surface 25 of the front spar body Pa as a reference.

Since this invention is constructed as explained above, the rafter support members can be tilted within a certain angle range with respect to the front girder, which is the horizontal frame material, and this work is extremely easy. This is extremely convenient as it allows immediate response even if the inclination angle varies depending on region or installation direction, or if the inclination angle suddenly changes at the construction site. In addition, since the front spar body and the rafter support member are assembled on an arc surface, not only is the combination stable, but the front spar body is easy to receive the load evenly, and the load capacity is also stable.
Coupled with its simple structure, it is suitable as this type of rafter receiving structure.

[Brief explanation of the drawing]

The drawings show one embodiment of this invention; Fig. 1 is an exploded perspective view of a sunroom, Fig. 2 is a sectional view of the roof of the sunroom, and Fig. 3 shows the front spar main body, rafter receiving member, and windshield plate. It is a sectional view separated and shown. P... Front spar, Pa... Front spar main body, Pb... Rafter receiving member, 1... Support column, 2... Rafter, 5... Arc-shaped wall, 12... Seat plate, 13a, 14a... Receiving surface.

Claims (1)

[Scope of Claim for Utility Model Registration] A rafter support structure in which a horizontal frame member is erected at the upper end of a support of a building, and a rafter support member that supports the rafter receiving the roofing material from below is attached to the horizontal frame member, The frame member includes an arcuate wall 5 whose outer peripheral surface protrudes semicircularly at the upper end, and the rafter receiving member Pb has a seat plate that has a curved surface that matches the curved surface of the arcuate wall 5 and comes into contact with the arcuate wall 5. 12; and support pieces 13 and 14 that are formed in an upright manner at the front and rear of the seat plate 12 and have receiving surfaces 13a and 14a for the rafter 2 at their tips.