JPH0351453Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention relates to a mounting structure for a precast eave member that is provided above an opening such as a window provided on the outer wall of a building so as to protrude from the building. It is something.

[Conventional technology]

The conventional precast eave member mounting structure is
As shown in FIGS. 4 1 and 2, a through hole 8 for mounting is provided in the outer wall 1, a mounting bolt 3 is passed through the hole 8, a washer 11 is provided on the back surface of the outer wall, and a nut 5 is screwed into the mounting hole 8. It was a structure.

That is, the mounting structure shown in 1 in FIG.
Insert the mounting bolt 3 from the front of the outer wall 1.
The structure is such that a washer 11 is inserted on the back side and fastened with a nut 5, and the hole in front of the eave member is filled with repair mortar 1.
2, and the mounting structure shown in FIG. It also has a structure in which a washer 11 is inserted and fastened with a nut 5, which protrudes from the back surface of the outer wall 1.

[The problem that the idea aims to solve]

With this structure, when attaching the eaves member to a low-strength outer wall such as a curtain wall (lightweight aerated concrete such as ALC or siding), the strength of the mounting part is not strong enough to cause repeated damage during strong winds or earthquakes. The vibration causes the eaves member to rattle, causing problems such as water leakage from the joint with the outer wall.

In addition, in the mounting structure shown in 1 in Fig. 4, not only is the appearance unsightly because the tip is filled with repair mortar, but also the mounting strength is particularly low, resulting in a large length of extension (large moment at the mounting part).
It has been difficult to construct an eave, that is, an eave that has a large eave function.

Furthermore, although the mounting structure shown in 2 in Figure 4 allows the installation of eaves members with long extensions, the strength of the eave wall members is low (lightweight aerated concrete is used).
It was impossible to attach eaves parts to the exterior wall (ALC, siding, etc.) due to problems with the mounting strength, and the company was struggling with no other solution other than to attach the parts to the exterior wall, which has greater strength.

This invention was devised in view of the above-mentioned circumstances, and it has low strength (lightweight aerated concrete).
ALC, siding, etc.) It is possible to install an eaves member on the outer wall, and it has a beautiful appearance, high durability and installation strength, does not sag under its own weight, and can be extended to a larger length. The purpose is to provide structure.

[Means to solve the problem]

In the eaves mounting structure of the present invention, each mounting bolt 3 is screwed into a plurality of embedded nuts 7, which are embedded in the precast eaves member 2 made of lightweight aerated concrete and present at least in the vertical direction. 3 penetrates the exterior wall version 1 and protrudes to the back surface of the exterior wall version 1, and on the back surface of the outer wall version 1, a mounting plate 4 having holes 4a through which the plurality of mounting bolts 3 can be inserted is attached to the opening structure hardware 6. Installation of a precast eave member made of lightweight aerated concrete, characterized in that the plurality of mounting bolts 3 pass through the holes 4a of the mounting plate 4 and are fastened with nuts 5 on the back surface. It is a structure.

As described above, the mounting plate 4 used in the mounting structure of this eaves member has holes 4a through which a plurality of mounting bolts 3 located above and below can be inserted.
Even if two round holes 4a are provided as shown in figure 1, elongated holes 4a are provided as shown in figure 3.
It may be provided with two holes, or may be provided with one vertically elongated hole 4a as shown at 3 in FIG. 3 so that a plurality of vertically arranged bolts can be inserted therethrough. In short, it is sufficient if one mounting plate 4 is provided with holes 4a so that a plurality of vertically arranged bolts can be inserted therethrough.

Also, as shown in Fig. 3, the mounting plate 4
As shown in FIG. 1, the lower part of the opening structure can be fixed to the flange surface of the opening structure hardware 6 in an overlapping manner. If there is a margin for such overlap, it is possible to absorb accuracy errors in the mounting through holes 8 provided in the outer wall slab 1, which is the base.

Further, although the number of mounting plates 4 used per one eave member is two in the example shown in FIG. 2, it is sufficient to use the number necessary for the mounting strength depending on the size of the eave member, etc.

[Effect]

By making the eave member 2 a pre-cast product made of lightweight aerated concrete, the eave member 2 can have a sense of thickness but its own weight can be reduced, and even if the length of the eave member 2 is increased, the weight can be reduced. , it becomes possible to embed the mounting nut 7 inside the eave member.

Further, a plurality of these embedded nuts 7 are provided at least in the vertical direction, and the mounting plate 4 has holes 4a through which the plurality of bolts 3 screwed into the plurality of nuts 7 can be inserted. Because it has a structure in which multiple bolts 3 are inserted and fastened with nuts 5, its strength is low (ALC, which is lightweight aerated concrete, siding, etc.)
This makes it possible to attach eaves members to the exterior wall slab.

〔Example〕

Hereinafter, the present invention will be explained using illustrated embodiments.

FIG. 1 is a longitudinal cross-sectional view showing the mounting structure for the eaves member according to the present invention, and FIG. 2 is a perspective view for explaining the mounting structure for the eaves member according to the present invention. FIG. 3 is a perspective view of a mounting plate used for mounting the eaves member of the present invention.

In addition, the opening member hardware 6 seen in FIG.
A reinforcing steel material such as angle steel that is incorporated around the openings of curtain walls such as ALC and siding.
Generally, such opening member hardware 6 is placed around the opening in a curtain wall such as a wall or siding in order to transmit the wind load, etc. received by the window glass installed in the opening to the structural frame. For example, it is arranged in a parallel grid pattern.

In the present invention, the opening member metal fittings 6 are also used to effectively transmit to the building frame the stresses required at the mounting portion of the eaves member, such as external forces received by the eaves member 2 and the eaves member's own weight.

When constructing the mounting structure for the eaves member of the present invention, as shown in FIG.
An eaves member 2 made of ALC is prepared. This eaves member 2 made of ALC is embedded in left and right support plates 10 that are welded to and embedded in a plurality of reinforcing bars 13 inside the eaves member, with two upper and lower embedded nuts 7 fixed to each side. . The mounting bolt 3 is screwed into all of the embedded nuts 7, and the other end of the mounting bolt 3 is
The eaves member 2 is inserted into the mounting through-hole 8 provided at the required location of the ALC outer wall plate 1 to which the eaves member 2 is attached.

Then, the mounting bolts 3 protruding from the back side of the ALC exterior wall plate 1 are engaged with the holes 4a provided in the mounting plate 4, the washers 9 are inserted into each, and the nuts 5 are tightened to connect the eaves member 2 and the mounting plate 4. to integrate.

At this time, if the mounting plate 4 is shaped like a lightning bolt as shown in the figure, it will be overlapped with the opening structure hardware 6 by tightening with the nut 5, and will be pressed into contact with it, making it possible to temporarily fix it.

Next, as shown in FIG.
The mounting plate 4 and the opening hardware 6 are integrated by welding the lower part of the opening hardware 6 to the opening hardware 6.

The above procedure completes the mounting structure of the eaves member of the present invention.

〔effect〕

In this invention, the eaves member 2 is made of a precast product made of lightweight aerated concrete.
Although it has a sense of thickness, its own weight does not have to be so heavy, and even if the length of the extension is increased, the weight does not increase so much.Moreover, the embedded nuts 7, which are embedded vertically in the eave member, have multiple embedded nuts 7. The plurality of bolts 3 are screwed in, and the plurality of bolts 3 are screwed into the bolts 3.
Since the other end is inserted into the insertion hole 4a of one mounting plate 4 and fastened with a nut 5, the strength is low (lightweight aerated concrete such as ALC or siding), so it cannot be taken out to the exterior wall plate. This has the effect of making it possible to install a precast eave member made of lightweight aerated concrete with an increased length.

Therefore, the mounting structure of the present invention replaces the precast eave member made of lightweight aerated concrete, which is thick and has a large extension length (large moment at the attachment part), with a low-strength exterior wall made of lightweight aerated concrete such as ALC or siding. Even when it is attached to the slab, it is installed at multiple locations above and below, which increases the strength of the attachment part, and prevents the eaves member from rattling due to repeated vibrations during strong winds or earthquakes. It also has the effect of eliminating problems such as water leakage.

Furthermore, since it is installed using embedded nuts, the appearance is beautiful without the need for repair mortar, and the construction procedure is simple.

In this way, according to the present invention, precast eaves made of lightweight aerated concrete can be easily attached to external wall slabs with low strength (such as lightweight aerated concrete such as ALC or siding), and the appearance is beautiful. This made it possible to create eaves with high durability and installation strength, and a large extension length that would not buckle under external force or its own weight despite its thickness.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional view showing the mounting structure of the eaves member of the present invention, Fig. 2 is a perspective view explaining the mounting structure of the eave member of the present invention, and 1, 2, and 3 in Fig. 3 are FIG. 2 is a perspective view of an example of a mounting plate used in the eaves member mounting structure of the present invention. 1 and 2 in FIG. 4 are longitudinal sectional views of a conventional eaves member mounting structure. 1...Outer wall plate, 2...Eave member, 3...Mounting bolt, 4...Mounting plate, 4a...Hole, 5...
... Nut, 6 ... Opening structure hardware, 7 ... Embedded nut, 8 ... Through hole, 9 ... Washer, 10 ... Support plate, 11 ... Washer, 12 ... Repair mortar, 13 ... Reinforcement Rebar.

Claims (1)

[Scope of utility model registration request] Mounting bolts 3 are each screwed into a plurality of embedded nuts 7 embedded in the precast eave member 2 made of lightweight aerated concrete and present at least in the vertical direction, and the mounting bolts 3 penetrate the outer wall slab 1 and attach to the outer wall. A mounting plate 4 that protrudes to the back surface of the plate 1 and has holes 4a on the back surface of the outer wall plate 1 through which the plurality of mounting bolts 3 can be inserted is fixed to the opening structure metal fittings 6. A mounting structure for a precast eave member made of lightweight aerated concrete, characterized in that mounting bolts 3 pass through holes 4a of the mounting plate 4 and are fastened with nuts 5 on the back surface.