JP3314055B2 - Building hardware - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reinforced metal member for improving the structural strength of a framed wooden building, for example, by increasing the joint strength between a base and a bar, a base and a column, and a column and a beam. In particular, the present invention relates to a reinforcing hardware capable of improving workability when applied to an existing framed wooden building.

[0002]

2. Description of the Related Art The opinion that "the seismic damage of a wooden timber house is greatly affected by the strength of the joint" is a consensus opinion among many wooden building researchers, and that the joint has a highly reliable strength. As a means of, the Japan Housing * Wood Technology Center, which is commonly called "Z-marked hardware", has been specified by "Hardware standard for framing method" established in 1978,
It is well known that various types of hardware such as fired hardware, bracing plates, chevron plates, and corner plates are provided. Also, JP-A-8-302834
Japanese Patent Application Laid-Open No. H08-338070 (hereinafter referred to as Prior Art 2) and Japanese Unexamined Patent Application Publication No. H10-131295 (hereinafter referred to as Prior Art 3) have proposed reinforcing metal fittings.

[0003]

However, the above-mentioned brace plate, chevron plate, and corner plate are made of tension material and are not presupposed to be mounted under a bending force. It is a metal fitting for application, and there are many restrictions when mounting and reinforcing it on an existing building, and there is a disadvantage that the cost is too high. In particular, in order to reduce the number of nails and screws and join them, the bending rigidity of the members is necessary, but since this is not taken into account, a flat metal piece of equal thickness is cut out from a metal plate. However, since the bending strength is given only from the plate thickness, the requirements for weight reduction and rigidity have not been satisfied. Further, the above-mentioned hole-down hardware is a hardware mainly used for fastening a pillar to a base.
Are metal fittings in consideration of bending rigidity, but these are metal fittings used in corners and cannot be used as metal fittings for joining framed wood pieces on substantially the same plane.

[0004] As described above, especially in existing wooden buildings, the bracing is insufficient, the joining bolts are loosened due to aging, and the number of conventional reinforcing hardware is insufficient. Therefore, even if it is necessary to reinforce the part where the strength of the building is insufficient, there is a problem that the outer wall is broken, a scaffold is assembled, and the cost is high, and the reinforcing work is difficult in terms of cost. In addition, there is a problem that the countermeasures against bending force are not sufficient, and it is not possible to reduce the number of fasteners to be driven by using fasteners having a large strength per one such as a coach screw and to increase the construction efficiency. .

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and in a reinforcing metal fitting for joining framed timbers on substantially the same plane, the cross section of a mounting surface abutting on a pillar or a beam has irregularities. To improve the rigidity against bending while being lightweight, and to provide a highly workable metal fitting that satisfies both strength and mounting properties.Especially, the same reinforcing metal is turned upside down and tightening from either side does not hinder Done,
An object of the present invention is to provide a reinforcing metal fitting for a building that can be used on both sides of the reinforcing metal while obtaining a firm fixation, that is, can be used on its own.

[0006]

In order to solve the above-mentioned problems, a reinforcing metal fitting of the present invention (Claim 1) is a reinforcing metal fitting for joining framed wood pieces on substantially the same plane. An outer flange is formed integrally at a uniform height on the entire circumference of the web portion where the mounting hole to the wood is formed, and an inner flange is formed around the mounting hole. And a rib is formed on the web portion so as to protrude in a direction in which the outer flange projects, and the height of the rib is formed to be the same as the height of the outer flange.

[0007] The reinforcing metal member of the present invention (claim 2) is a reinforcing metal member for joining framed wood pieces on substantially the same plane, and the entire web portion having a mounting hole for the framed wood piece is formed. An outer flange is formed around the circumference at a uniform height by integral molding, and a rib portion is formed on the web portion so as to protrude in a direction in which the outer flange extends, and the height of the rib portion is formed to be the same as the outer flange height. Then, a mounting hole is formed in the inner surface of the rib portion, an inner flange is formed around the mounting hole, and a tip end surface of the inner flange is formed to be uniform with the outer surface of the web portion.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of a reinforcing metal according to the first embodiment, FIG. 2 is a cross-sectional view taken along the line AA of FIG. 1, and FIG. 3 is a cross-sectional view of FIG. The reinforcing hardware 1 is for joining framed wood W to each other, for example, a base and a large scale, on substantially the same plane, and is integrally formed in an L-shape with a metal plate such as steel or stainless steel. The reinforcing metal fitting 1 is attached so that the outer surface of an L-shaped web portion 2 having an attachment hole 20 for the framed wood W is in contact with the framed wood W. Both side edges and both ends of the web portion 2 are provided. The outer flange 3 is formed integrally at a uniform height h1 over the entire circumference including the edge. In addition, the end of the reinforcing metal member 1 is formed in a semicircular radius, whereby the largest radius is obtained, and stable drawing can be performed.

The mounting hole 20 is formed to have a diameter through which a bolt 9 or a screw as a mounting bracket penetrates. The inner flange 4 is formed around the mounting hole 20 so that the front end surface thereof is uniform with the front end surface of the outer flange 3. Is formed.

The web portion 2 is provided with a rib portion 5 protruding in a direction in which the outer flange 3 extends in a position avoiding the mounting hole 20. The rib portion 5 has the same height as the height h 1 of the outer flange 3. Further, it is formed so as to prevent interference with the bolt head 90 and not to hinder the use of the fastening tool.

A general method of increasing the bending rigidity while reducing the weight is to form an outer flange 3 or a rib portion 5 on the web portion 2 to make the cross section uneven.
The inner flange 4 is provided around the mounting hole 20 in order to improve the strength of the mounting hole 20 through which the bolt 9 and the screw as the mounting bracket penetrate. Further, when the reinforcing metal member 1 is manufactured by cold working using an integral molding press, the yield point is improved, which is preferable in terms of buckling strength.

As shown in FIG. 2, the reinforcing metal member 1 is attached so that the outer surface of the web portion 2 comes into contact with the framed wood W, and the rib portion 5 has the same height as the height h1 of the outer flange 3. The inner flange 4 is formed at the same height as the front surface of the outer flange 3.

When the same reinforcing metal member 1 is turned upside down and attached in an arbitrary manner (in the case of the L-shaped reinforcing metal member, the type of hardware can be reduced by making this possible, which is very advantageous in terms of cost and inventory management). As shown in FIG. 3, the distal end surface of the outer flange 3 and the distal end surface of the inner flange 4 are brought into contact with the framed wood W, and the bolt 9 is attached from the outer surface side of the web portion 2. In this state, the web portion 2 is made of wood W
With only the outer flange 3 in contact with the wood W, the bolt tightening force is applied to a small area (the area obtained by multiplying the plate thickness by the tightening influence length), and the wood W
And it is not preferable because it is entrapped. In addition, if the fastening portion has a floating shape, it is not preferable in terms of firm fixation. For this reason, the outer flange 3 has a uniform height h1 as a whole to increase the contact area, and the web portion 2
In order to solve the above-mentioned problem, the height of the rib 5 is made equal to the height h1 of the outer flange 3 and the inner flange 4 is also provided. Is formed to be uniform with the front end surface of the outer flange 3. As a result, the bolt 9 can be securely tightened from either side, and it is possible to use both sides of the reinforcing metal member 1 while obtaining a firm fixation, that is, to use it without permission.

FIG. 4 is a perspective view of a reinforcing metal according to the second embodiment, FIG. 5 is a sectional view taken along the line BB of FIG. 4, and FIG.
FIG. 4 is a cross-sectional view showing a different use state. As shown in FIG. 5, the reinforcing metal member 1 is attached so that the outer surface of the web portion 2 comes into contact with the framed wood W. The reinforcing metal member 1 has a uniform height h1 over the entire circumference of the web portion 2 and has an outer flange. 3 is formed by integral molding, and the rib portion 5 projects from the web portion 2 in the direction in which the outer flange 3 projects, and the rib portion 5 has a height h1 of the outer flange 3.
And a mounting hole 20 is formed in the rib portion 5, and a distal end surface of the inner flange 4 formed around the mounting hole 20 is formed to be uniform with an outer surface of the web portion 2. It has become.

The reinforcing metal member 1 is mounted so that the outer surface of the web portion 2 and the distal end surface of the inner flange 4 abut against the framed wood W. To use the reinforcing metal member 1 with a mistake, as shown in FIG. Thus, the outer flange 3 and the rib 5 are attached such that the outer surface of the rib portion 5 comes into contact with the framed wood W. As described above, since the rib portion 5 is formed at the same height as the height h1 of the outer flange 3 and the front end surface of the inner flange 4 is formed to be uniform with the front end surface of the outer flange 3, Therefore, the bolt 9 can be tightened without any trouble, and it is possible to use both sides of the reinforcing metal member 1 while obtaining a firm fixation, that is, to use it without permission.

Although the embodiment of the present invention has been described with reference to the drawings, the specific configuration is not limited to this. For example, the attachment of the reinforcing hardware to the framed wood is not limited to bolts, and a coach screw or screw nail may be used, and the reinforcing bracket of the present invention may be applied to a horizontal surface or a vertical surface. Can be effective. In addition to the L-shape, the reinforcing metal of the present invention is also effective when applied to left-right asymmetrical metal such as "K" -shaped metal, and symmetrical I-type metal. Nor.

[0017]

As described above, since the reinforcing metal of the present invention has the above-described structure, it can be provided as a reinforcing metal not only for tension but also for bending and compression. The reinforcing hardware of the present invention can be attached as reinforcement to a connection that has been loosened due to aging of the frame when seismic force or horizontal force due to wind force is applied to the building, and can also be used as a foundation and a base or a column base. For example, by using it in a part where the tensile force is weak, such as used for joining, the connection part of a wooden building built by the conventional method is hardened, and the joint part has bending resistance,
Reinforce existing buildings, convert to solid buildings to prevent collapse of buildings, and easily apply as a reinforcing agent for existing buildings, build a scaffold in the reinforcement work,
Since the construction can be performed from the inside of the building without removing the outer wall, there are advantages that the construction cost is low and that partial reinforcement is possible.

In addition, the same reinforcing metal can be turned upside down and tightened from either side without any trouble, and it is possible to use both sides of the reinforcing metal while obtaining a firm fixation, that is, to use it without permission.

[Brief description of the drawings]

FIG. 1 is a perspective view of a reinforcing hardware according to a first embodiment.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a cross-sectional view showing a different use state of FIG.

FIG. 4 is a perspective view of a reinforcing hardware according to a second embodiment.

FIG. 5 is a sectional view taken along line BB of FIG. 4;

FIG. 6 is a cross-sectional view showing a different use state of FIG. 5;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Reinforcement metal 2 Web part 20 Mounting hole 3 Outer flange 4 Inner flange 5 Rib part 9 Bolt

Claims (2)

(57) [Claims] 1. A reinforcing metal member for joining framed wood pieces on substantially the same plane, wherein the metal piece is provided around the entire circumference of a web portion having a mounting hole for the framed wood piece.
The flange is formed by integral molding at a uniform height, and an inner flange is formed around the mounting hole.
Of the outer flange is formed in a uniform plane with the tip surface of the outer flange.
And the height of this rib is the height of the outer flange.
A reinforcing metal fitting for a building, which is formed in the same manner as in (1) . 2. A method for joining framed wood pieces on substantially the same plane.
Metal around the web where the holes for attachment to the framed wood are formed.
The flange is formed by integral molding at a uniform height, and the rib protrudes from the web in the direction in which the outer flange projects.
And the height of this rib is the height of the outer flange.
The mounting hole is formed on the inner surface of the rib, and around the mounting hole
An inner flange is formed, and the tip surface of this inner flange is
A reinforcing metal fitting for a building, wherein the metal fitting is formed on the outer surface and the uniform surface of the rib portion .