JPH1054087A - Joining structure and joint metal of wooden framework - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a joining structure having high strength by integrally forming a horizontal section placed on the top face of a column to the mounting section of a joint metal and inserting and fixing an inserting support section projected from the mounting section into a slit formed at the front end of a beam. SOLUTION: The mounting section 4 of a joint metal 3 is abutted against the side face of a column 1 consisting of square-shaped wood, and screws 19 are inserted and the mounting section 4 is fixed. The upper end of the mounting section 4 is bent in the horizontal direction at a right angle, a horizontal section 5 is formed integrally, and lag screws 17, 17 are screwed and the horizontal section 5 is fastened onto the upper end face of the column 1. An inserting support section 7 projected from the mounting section 4 is inserted into a slit 11 formed at the front end of a beam 2, and drift pins 14, 14 are driven and the inserting support section 7 is fixed. Accordingly, since shear load is transmitted to the column as compressive force by the horizontal section 5, bolts having a large diameter need not be used, no large sectional breaking is generated in the beam 2, and a joining structure having high strength can be obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joint structure and a joint metal used for joining a wooden frame such as a pillar and a beam or a beam and a beam.

[0002]

2. Description of the Related Art Conventionally, as a joint structure of a wooden frame for joining a column and a beam or a beam to a beam, as shown in FIG. 4, an attachment portion (32) of a metal (31) formed by bending a metal plate is used. ) Pillar
(33) and fixed with bolts (34), and insert a pair of insertion supports (35) (35) into slits (37) formed on the end face of the beam (36), etc. Alternatively, one that is fixed by a pin (38) or the like is considered.

[0003]

In the above-mentioned conventional joint structure, a fixing portion (32) of a metal joint (31) is fixed to a column (33) or a beam, and thus a plurality of the columns (33) or a beam are attached to the column (33) or the beam. It is necessary to penetrate through the bolt holes. This mounting bolt
(34) needs to have a diameter sufficient to support the shear load from the beam (39) to be joined, and the diameter of the bolt hole also increases, so the column (33) or There is a disadvantage that a large cross-sectional defect occurs in the beam and the strength of the column (33) or the beam itself is reduced.

Since a large bolt head or nut and a bolt tip protrude between the mounting portion (32) and the end face of the beam (39) to be joined, the beam (39) is used to avoid these.
It is necessary to provide a large concave notch (40) on the end face of
The cross-sectional defect of (39) increases, and special pre-cut processing is required.

Further, as described above, the two insertion support portions (3
If 5) is inserted into the slits (37) of the beam (39), the number of cross-sectional defects caused by the slits (37) increases, and the pre-cut becomes more complicated, resulting in higher costs.

According to the present invention, in a wooden frame joined by using a metal joint as described above, a large cross-sectional defect does not occur in a column or a beam for attaching a metal joint, and
It is an object of the present invention to provide a low-cost joining structure and a joining hardware which have a simple structure and do not require complicated precut processing.

[0007]

In order to solve the above-mentioned problems, a joint structure according to the present invention comprises a mounting portion abutting on one side face of a frame member such as a pillar and a supporting portion projecting from the mounting portion. In the metal joint consisting of, a horizontal portion integrally provided at the upper end of the mounting portion is placed on the upper surface of the frame member, and the horizontal portion and the mounting portion are fixed to the same frame member, and An end of the other frame member to be joined is fixed to the support portion.

In the above, the horizontal portion and the mounting portion are fixed with screws, nails, lag screws, or the like.

Preferably, the supporting portion is inserted into a slit in the end face of the frame member to be joined, and is fixed by a pin or a bolt inserted from the side face of the frame member.

[0010] Similarly, the metal joint of the present invention comprises a mounting portion fixed to one of the side faces of a frame member such as a column or a beam, a support portion projecting from the mounting portion and fixing a frame member to be bonded. A horizontal portion fixed to the upper surface of the one frame member, which is also provided integrally with the upper end of the mounting portion and to which the mounting portion is fixed.

It is preferable that a lip is provided integrally with a tip of the horizontal portion to be in contact with a side surface on the opposite side of the frame member to which the mounting portion is fixed.

Further, in the metal joint of the present invention, there is provided a metal fitting wherein the mounting portion is formed of a vertical metal plate, and the upper end thereof is bent in the horizontal direction to form the horizontal portion.

[0013]

1 and 2 show a pillar (1) and a beam (2).
2 shows an embodiment in the case where it is used for a joint portion with the above. (3)
(4) is a vertical mounting portion made of an iron plate having a predetermined thickness, and an upper end of the mounting portion (4) is bent at a right angle in a horizontal direction. The horizontal part (5) of the present invention is formed integrally. Further, a tip portion of the horizontal portion (5) opposite to the mounting portion (4) is bent vertically downward to form a lip (6) integrally.

Reference numeral (7) denotes a single insertion supporting portion for joining the beam (2), and the upper end of the insertion supporting portion (7) has a beam (2).
A substantially V-shaped notch (9) having a semicircular bottom portion that fits a bolt (8) for joining the bolts (8) is formed. Below the notch (9), a pair of upper and lower pin insertion holes (10) is formed. ) (10) are formed. A slit (11) having a thickness and a width into which the insertion support portion (7) is inserted is formed in an end surface of the beam (2) corresponding to the insertion support portion (7). A bolt (13) is previously inserted and attached to a bolt hole (12) (FIG. 2) of this beam (2) formed corresponding to the notch (9) of the portion (7). Pin insertion hole of insertion support (7)
(10) Pin insertion holes (15) (15) are formed corresponding to (10).

The metal joint (2) is a pillar made of square wood.
The horizontal part (5) is installed on the upper end face of (1) from above, and the mounting part (4) is installed in contact with the side surface of the pillar (1). Insert a lag screw (17) having a hexagonal head from above into the plurality of mounting holes (16) (16) formed in the horizontal portion (5), and insert the lag screw (17) into a pillar. It is screwed into the upper end surface of (1) and fixed. At this time, it is desirable that a pilot hole for screwing the lag screw (17) is formed in advance at the upper end of the column (1). In the figure, there are four mounting holes (16) (16)... Formed in the horizontal portion (5).
In (17), only two screws are screwed diagonally.

On the other hand, screws (19) are inserted into a plurality of mounting holes (18) (18) formed in the mounting portion (4) on both sides of the insertion support portion (7). As well as pillars
It is fixed by screwing into the side of (1).

As described above, the joining hardware (3) is connected to the pillar (1).
In the state where it is attached to the beam (2), the slit at the tip (11)
The supporting member (3) is inserted into the notch (9), and the bolt (13) previously attached to the beam (2) is dropped into the notch (9) from above, whereby the beam is positioned at a predetermined position. Thereafter, the drift pins (14) and (14) are inserted into the pin insertion holes (15) and (15) from the side surfaces of the beam (2) and inserted into the insertion support portions.
The beam (2) is driven into the pin insertion holes (10) and (10) of (7), and the beam (2) is fixed and attached to the insertion support portion (3).

In the above mounting structure, the shear load from the beam (2) side is transmitted from the bolt (13) fixing the beam (2) and the drift pins (14) (14) to the insertion support (7). Conveyed to. The shear load transmitted to the insertion support portion (7) is transmitted as a compressive force to the column (1) from the mounting portion (4) via the horizontal portion (5). For this reason, the screw (19) for fixing the mounting portion (4) does not need to support the shearing load, and can be sufficiently supported by such a screw (19). The lip (6) is locked to the side of the column (1) opposite to the mounting portion (4) to prevent the joint hardware (3) from moving due to a horizontal load during an earthquake. .

In the above embodiment, the horizontal portion (5) is provided with a lag screw (17), and the mounting portion (4) is provided with a general screw (19).
It is also possible to use a lag screw (17) on the mounting part (4) side, or to fix both the horizontal part (5) and the mounting part (4) with screws,
Or it is also possible to fix with nails.

FIG. 3 shows an embodiment in which the joint hardware (3) is attached to the joint of the beam (20) and used to join the beam (20) and the beam (2). The joining structure itself is exactly the same.

[0021]

As described above, according to the present invention, in a metal joint to be attached to a side surface of a frame member such as a column or a beam, a horizontal portion is integrally provided at an upper end of the attachment portion. Are fixed to the upper surfaces of the columns or beams, the shear load can be transmitted to the columns or beams as compressive forces by the horizontal portions, and it is not necessary to support the shear loads only by the mounting portions as in the related art. For this reason, since it is not necessary to fix this mounting portion with a bolt penetrating the column or beam, there is no disadvantage that a large cross-sectional defect occurs in the frame member due to a large diameter bolt hole, and a high-strength joint structure is provided. Can be In addition, since the mounting portion can be fixed with screws or the like, a large diameter bolt head or nut does not protrude to the outer surface of the mounting portion as in the related art, and a deep recessed portion for avoiding them. It is not necessary to form the part on the end face of the counterpart beam or it is only necessary to make it small, so that the cross-sectional loss of the beam itself is reduced, and the precut processing of the end face of this beam is simplified, and the cost can be reduced accordingly .

In addition, by using only one insertion support portion, only one slit of the beam needs to be formed. By forming two slits as in the related art, the end of the beam can be formed. This can prevent a large cross-sectional defect from occurring.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a joint between a column and a beam, showing an embodiment of the present invention.

FIG. 2 is a vertical sectional view of the joint.

FIG. 3 is a perspective view of an embodiment similarly used for a joint between beams.

FIG. 4 is an exploded perspective view of a conventional joint between a column and a beam.

[Explanation of symbols]

 (1) Column (2) Beam (3) Joint hardware (4) Mounting part (5) Horizontal part (6) Lip (7) Insertion support part (8) Bolt (11) Slit (17) Lug screw (19) Screw (20) Beam

Claims (6)

[Claims] 1. A metal joint comprising a mounting portion abutting on one side surface of a frame member such as a pillar and a supporting portion projecting from the mounting portion, a horizontal portion integrally provided at an upper end of the mounting portion. The horizontal portion and the mounting portion are mounted on the upper surface of the frame member, and the horizontal portion and the mounting portion are fixed to the same frame member, and the end portion of the other frame member to be joined is fixed to the support portion. A joint structure of a wooden frame, comprising: 2. The joint structure for a wooden frame according to claim 1, wherein the horizontal portion and the mounting portion are fixed by screws, nails, or lag screws. 3. The supporting member is inserted into a slit in the end face of the frame member to be joined, and is fixed by a pin or a bolt inserted from a side surface of the frame member. The joint structure of the described wooden frame. 4. A mounting portion fixed to a side surface of one of the frame members such as a column or a beam, a support portion projecting from the mounting portion and fixing a frame member to be joined, and also integrated with an upper end of the mounting portion. And a horizontal portion fixed to an upper surface of the one frame member. 5. The joint of a wooden frame according to claim 4, wherein a lip is provided integrally with a tip of the horizontal portion, the lip being in contact with a side surface opposite to a frame member to which the mounting portion is fixed. hardware. 6. A metal joint for a wooden frame according to claim 4, wherein said mounting portion is formed of a vertical metal plate, and an upper end thereof is bent horizontally to form said horizontal portion.