JPH09111888A - Framework structure for wooden architecture, and connection metal used therein - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve construction workability by eliminating tenon jointing from a framework structure of a wooden house. SOLUTION: At a joint part of a shaft member, a tip surface of one wooden member 10 is applied to a side surface of the other wooden member 10. A two-way metal 20 is installed on an inner angular part where two ridge lines of the wooden members 10, 10 cross each other, and a three-way metal 30 is installed at an inner angular part where three ridge lines cross each other. The two-way metal 20 has a right-angled cross sectional surface part to be extended in two right-angled directions, and the three-way metal 30 has a right- angled cross sectional surface part to be extended to three right-angled directions. The right-angled cross sectional surface part is nailed to two side surfaces on both sides of the ridge line of the wooden member 10.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a frame structure for wooden construction and a connecting fitting used for the frame structure.

[0002]

2. Description of the Related Art In a timber framed wooden house, there are many joints of shaft members including joints of through columns and beams. In each of these shaft material joints, the tip end surface of a wooden member is joined to the side surface of another wooden member. Conventionally, a mortise insert has been used for this connection, but since it takes time and labor to process it, several frame structures that do not use a mortise insert have been recently developed.

One is to mount a convex metal fitting on the side surface side of the wooden member and to apply a concave processing for fitting the convex metal fitting to the front end surface side of the wooden member. In the other one, a convex metal fitting is attached to the tip surface side of the wooden member, and concave processing for fitting the convex metal fitting is performed on the side surface side of the wooden member. Some of the latter framework structures have beams replaced with shaped steel.

[0004]

However, even though any frame structure eliminates the mortise insertion, one wooden member to be framed needs to be provided with a recess for fitting the metal fitting. . Therefore, it cannot be said that the construction has been completely rationalized. Further, since the concave-convex fitting is not excluded, it is necessary to disassemble more than necessary in order to perform the concave-convex fitting in the case of extension and remodeling. It should be noted that when the beam is replaced with a shaped steel, the wooden member does not need to be recessed in the beam, but the strength of the beam partly increases, so the load is concentrated on the weak wooden member. There's a problem.

The present invention was devised in view of such circumstances, and when all the shaft members are made of wood members by connecting the wood members to each other only by the metal fittings and eliminating the concave and convex fitting, It is an object of the present invention to provide a frame structure which is excellent in workability and does not need to be processed on the wooden member, and a connecting fitting used therefor.

[0006]

According to the frame structure of the present invention, the tip end surface of a wooden member having a quadrangular cross section is abutted against the side surface of another wooden member having a quadrangular cross section in a shaft member joint portion of a wooden construction. The connecting metal fittings for supporting the inner corners from the inside are attached to the inner corners where a plurality of ridge lines of each wooden member intersect at a right angle.

Further, the connecting fitting according to the present invention is a connecting fitting used for an inner corner portion formed by a plurality of ridge lines intersecting at right angles when the tip end surface of a wooden member is abutted against the side surface of another wooden member. There are a plurality of right-angled cross-sections, which extend in a plurality of right angles corresponding to the plurality of ridgelines forming the inner corners, and each abut on two side faces sandwiching the ridgeline of the wooden member. The connecting portion has a bent cross section that is continuous with the cross-section right-angled portion, and nail holes are provided in the flat portions on both sides sandwiching the bending line of each cross-section right-angled portion.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view schematically showing an example of a framework structure embodying the present invention, FIG. 2 is a perspective view showing an example of a connecting fitting (two-way fitting) embodying the present invention, and FIG. 3 is an embodiment of the present invention. It is a perspective view which shows an example of the connection metal fittings (3 direction metal fittings) which implemented.

In FIG. 1, 10 is a wooden member as a shaft member, 10a is a base, 10b is a through pillar, 10c is a pillar,
10d is a beam, and 10e is a body difference. Since each wood member 10 has a rectangular cross section, it has four ridge lines (indicated by 11 in FIG. 2) on the outer surface.

In a wooden house with a frame, there are many joints for shaft members including the joint between the through column 10b and the beam 10d. In this framework structure, the flat tip end surface of one wood member 10 is abutted against the flat side surface of the other wood member 10 in all the joint portions. In other words, each of the wooden members 10 is simply cut into a predetermined length, and neither the tip end surface nor the side surface is subjected to uneven processing.

When the front end surface of the wooden member 10 is abutted against the side surface of another wooden member 10, an inner corner portion where the ridge lines intersect at a right angle is formed at the joint portion. Depending on the number and position of the wooden members 10 to be abutted, the inner corner portion is either a two-sided portion where two ridge lines intersect at a right angle or a three-sided portion where three ridge lines intersect at a right angle. In this framework structure, two metal fittings are provided at the inner corner where the two ridges intersect at a right angle.
By attaching the metal fitting 20, the three metal fittings 30 are attached to the inner corners where the three ridge lines intersect at right angles, so that the abutted wooden members 10, 10 are connected.

The two-way fitting 20, as shown in FIG.
It is produced by bending a rectangular metal plate at the center in the width direction at a right angle and further bending the metal plate at a center at the center in the longitudinal direction of one flat surface portion to the inside at a right angle. Along with this bending, the other flat surface portion located on the outer side in the bending direction is bent at a right angle in the flat surface. A notch 24 is provided at the center in the longitudinal direction of the one flat surface portion in order to prevent the generation of wrinkles and the like due to bending.

The two-way metal fitting 20 thus produced has two right-angled cross-sections 21 and 21 extending in two directions at right angles, and flat portions 22 and 22 on both sides sandwiching the bending line of each right-angled cross-section 21. Touches two side surfaces of the wooden member 10 that sandwich the ridgeline. Plural nail holes 23 are provided in the flat portions 22 and 22 at intervals in the direction of the bending line. As described above, the notch 24 is provided at the corner where the two right-angled portions 21 and 21 cross each other in order to avoid the generation of wrinkles and the like due to bending.
Is provided. The notch 24 has a bent cross section at its intersection, and its size and shape are determined so as to leave sufficient strength at that portion.

The two-way fitting 20 is applied to a portion where the two ridge lines of the abutted wooden members 10, 10 intersect at a right angle. Then, the two-way fitting 20 is fixed by driving a nail into the wooden member 10 through the nail hole 23.

In the two-way fitting 20, not only the two right-angled cross-sections 21 and 21 but also the intersections thereof have a bent cross-section, so that the strength itself is high, and the right-angled cross-sections 21 are the wooden members 10. Since it is nailed to the two side surfaces sandwiching the ridgeline, the joint strength with the wooden member 10 is also high. Therefore, by attaching the two-way fitting 20 to the inner corner portion where the two ridge lines intersect at a right angle, this portion is firmly joined.

The three-way metal fitting 30 is, as shown in FIG.
Produced by bending each rectangular part of a radial metal plate in which three rectangular parts are combined at 120 ° intervals in the widthwise central part in the same direction at right angles, and then further bending the metal plate in the central part in the opposite direction at right angles. To be done.

The three-way metal fitting 30 thus produced has three right-angled cross-sections 31, 31, 31 extending in three directions at right angles.
Having. Each cross-section right-angled portion 31 has flat surface portions 32, 32 that are open to the outside with a folding line interposed therebetween.
32 abuts on two side surfaces of the wooden member 10 that sandwich the ridgeline. A plurality of nail holes 33 are provided in the plane portions 32, 32 at intervals in the direction of the bending line. A semi-circular cutout 34 is provided at a corner where two adjacent right-angled cross-sections 31, 31 intersect so as to avoid wrinkles and the like due to bending. The notch 34 is designed so that the center portion of the three-way metal fitting 30 has a bent cross section and sufficient strength remains in that portion.

The three-way fitting 30 is applied to a portion where the three ridge lines of the abutted wooden members 10, 10 intersect at a right angle. Then, the three-way fitting 30 is fixed by driving a nail into the wooden member 10 through the nail hole 33.

In the three-way fitting 30, since not only the three cross-section right-angled portions 31, 31, 31 but also the central portion where they intersect has a bent cross-section, the strength itself is high, and each cross-section right-angled portion 31 is Since it is nailed to both side surfaces sandwiching the ridgeline of the wooden member 10, the connection strength with the wooden member 10 is also high. Therefore, at the part where the three ridges intersect at a right angle, the three-way fitting 3
By attaching 0, this part is firmly connected.

In this frame structure, as described above,
At all joints, the flat tip surface of one wood member 10
It is butted against the flat side surface of the other wooden member 10.
Then, the two-way metal fitting 20 is attached to the inner corner portion where the two ridges of the joint portion intersect at a right angle, and the three-way metal fitting 30 is attached to the inner corner portion where the three edges intersect at a right angle. There is.

In such a frame structure, a box is formed on the side surface of the other wooden member 10 by the connecting metal fitting, and the tip of one of the wooden members 10 is inserted into the box so that the entire joint portion is formed. The ridge line intersection is supported from the inside by the connecting fitting. Even if the box is not formed, all the ridgeline intersections of the joint are supported from inside by the connecting fittings.

Moreover, the two-way metal fitting 20 and the three-way metal fitting 30
Is not only the cross-section right-angled part, but also the part where they intersect,
Since it has a bent cross section that is continuous at the right-angled section, it has high strength. Further, since the right-angled portions of each cross section are nailed to the two side surfaces sandwiching the ridgeline of the wooden member 10, the strength of connection with the wooden member 10 is high.

Therefore, in the present frame structure, the wooden members 10, 10 are firmly joined to each joint portion as in the case of using the concave-convex fitting, although the concave-convex fitting is not used. . On the contrary, since the wood member 10 is not subjected to the concavo-convex processing, the cross-sectional area of the wood member 10 does not decrease at the joint portion, and therefore a joint strength larger than that of the conventional one can be expected.

Here, inserting the tip of the wooden member 10 into the box constituted by the connecting metal fitting results in uneven fitting, but since the concave portion is formed by the metal fitting, the wooden member 10 is subjected to uneven processing. No need. In the conventional frame structure that eliminates the hook, the convex part is formed by metal fittings,
It is necessary to process the concave portion on the wooden member 10 side. In this framework structure, it is not necessary to make the wood member 10 uneven, and the flat tip surface of one wood member 10 is abutted against the flat side surface of the other wood member 10.
The uneven fitting is eliminated.

Since the base 10a of the wooden member 10 is placed on the foundation and the load is received by the foundation, the base 10a
In the portion associated with the lower surface of a, the connecting fitting can be omitted as in the above example. In the above example, the connecting metal fitting is omitted in a portion where the edges of the abutted wooden members 10, 10 are linearly continuous, but a connecting metal fitting having a right angle in cross section such as an angle member is attached to this portion.
It is also possible to make all joints a box structure.
In addition, it is of course possible to use connecting fittings for some joints.

Furthermore, the present frame structure can be used not only with the joint portion in which the hook is omitted but also with the hook.
By using them together, the strength of the hook-and-loop joint can be dramatically increased, and the earthquake resistance of wooden construction can be significantly improved.

[0027]

As described above, the framework structure for wooden construction according to the present invention has an inner corner portion formed by intersecting ridge lines when the tip end surface of a wooden member is abutted against the side surface of another wooden member. By attaching a connecting metal fitting to the and supporting the bending load from the inside of the inner corner portion, the concave-convex fitting can be completely eliminated. Therefore, it is not necessary to subject the wooden member to uneven processing, and since it is only necessary to cut and align the wooden member to a predetermined size, it is possible to eliminate the hook insertion, but it is more than the conventional structure without a recess that depends on uneven fitting. The workability can be significantly improved. In addition, the extension and renovation can be performed more easily than the conventional structure without a hook. Furthermore, since it is not necessary to use shaped steel for the beam, strength imbalance due to strength concentration can be avoided. Furthermore, by using it together with a mortise socket, the strength of the mortar joint can be dramatically increased, and the earthquake resistance of wooden construction can be significantly improved.

Further, the connecting fitting according to the present invention can provide the joint portion with a connection strength similar to that of the concave and convex fitting, even though the concave and convex fitting is eliminated from the joint portion. By applying it to the conventional hosso-type joint portion, the strength of the joint portion can be dramatically increased, and a great effect can be exerted in improving the earthquake resistance of wooden construction.

[Brief description of the drawings]

FIG. 1 is a perspective view schematically showing an example of a framework structure embodying the present invention.

FIG. 2 is a perspective view showing an example of a connecting fitting (two-way fitting) embodying the present invention.

FIG. 3 is a perspective view showing an example of a connecting fitting (three-way fitting) embodying the present invention.

[Explanation of symbols]

 10 Wood member 20 Two-way metal fitting (coupling metal fitting) 30 Three-way metal fitting (coupling metal fitting) 21,31 Cross-section right-angled section 22,32 Flat section 23,33 Nail hole 24,34 Notch

Claims (2)

[Claims] 1. In a shaft joint portion of a wooden construction, the tip surface of a wooden member having a quadrangular cross section is abutted against the side surface of another wooden member having a quadrangular cross section, and the ridge lines of the respective wooden members intersect at right angles. A framework structure for wooden construction, characterized in that a connecting metal fitting for supporting the inner corner portion from the inside is attached to the formed inner corner portion. 2. A connecting fitting used for an inner corner portion formed by a plurality of ridge lines intersecting each other at right angles when the front end surface of the wooden member is abutted against the side surface of another wood member, the inner corner portion being formed. Has a plurality of right-angled cross-sections that extend in a plurality of right-angled directions corresponding to the plurality of ridgelines, and each abuts two side surfaces sandwiching the ridgeline of the wooden member. A connecting metal fitting having a continuous bent cross section, characterized in that nail holes are formed in flat portions on both sides sandwiching a bending line of a right angle portion of each cross section.