JPH1054082A - Joining structure and joint metal of wooden framework - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a joining structure having high strength by fixing the horizontal section of a joint metal onto the upper end face of one beam and inserting and fastening an inserting support section formed to a mounting section integrally formed with the horizontal section into a slit formed at the front end of the other beam. SOLUTION: The horizontal section 5 of a joint metal 3 is placed on the upper end face of a beam consisting of square-shaped wood, and fixed by lag screws 17. A plurality of mounting sections 4a, 4b integrally formed with the horizontal section 5 are abutted and installed onto the side face of the beam 1, and fastened by screws 19. Inserting support sections 7, 7 formed to the mounting sections 4a, 4b are put into slits 11, 11 shaped to the front ends of other beams 2, 2, and fixed by drift pins 14, 14. Accordingly, since shear load is transmitted to the beam 1 or the column side 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 beams 2, and a joining structure having high strength is acquired.

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. 5, 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) is required to have a diameter sufficient to support the shear load from the beam (36) 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.

Also, a large bolt head or nut and a bolt tip project between the mounting portion (32) and the end face of the beam (36) to be joined.
It is necessary to provide a large concave notch (39) on the end face of
The cross-sectional defect of (36) increases and special pre-cut processing is required.

Further, as described above, the two insertion support portions (3
If 5) is to be inserted into the slit (37) of the beam (36), the number of cross-sectional defects caused by the slit (37) increases, and the pre-cut becomes more complicated, resulting in higher costs.

[0006] Moreover, beams in multiple directions are provided on the side surfaces of the pillars (33) and the beams.
In the case where (36) is joined, joining hardware (31) corresponding to the number of beams (36) is required, and there is a drawback that the number of parts increases accordingly.

According to the present invention, in a wooden frame joined by using a metal joint in this way, a large cross-sectional defect does not occur in a column or a beam for attaching a metal joint, and
While reducing the number of hardware used in the same place,
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.

[0008]

In order to solve the above-mentioned problems, a joint structure according to the present invention is arranged such that a horizontal portion of a metal joint is placed and fixed on the upper surface of one of the frame members such as a pillar. Corresponding to the other frame assembly member in a plurality of directions joined to the side surface of the frame member, a plurality of mounting portions in the vertical direction connected to the end of the horizontal portion are also provided on one side of the frame member. The other end of the frame member is fixed to a supporting portion that is fixed and protrudes from the mounting portion.

In the above, it is preferable that the horizontal portion and the mounting portion are fixed by screws, nails or lag screws.

It is also conceivable that the support portion is inserted into a slit on the end surface of the frame member to be joined and fixed with a pin or bolt inserted from the side surface of the frame member.

[0011] Similarly, a metal joint according to the present invention for solving the above-mentioned problems is provided integrally with a support portion fixed to the side surface of one of the frame members such as a column or a beam, and also at the upper end of the mounting portion. And a horizontal portion fixed to the upper surface of the one frame member to which the mounting portion is fixed,
A plurality of the mounting portions are integrally connected to the end of the horizontal portion so as to correspond to the other frame member in a plurality of directions joined to the one frame member. Is done.

[0012] Preferably, a lip is provided integrally with a tip of a horizontal portion to which the mounting portion is not continuously provided, the lip being in contact with a side surface of a frame member to which the horizontal portion is mounted.

Still preferably, in a metal joint according to the present invention, the mounting portion and the horizontal portion are integrally formed by bending a metal plate.

[0014]

1 and 2 show an embodiment in which a beam (2) and a beam (2) are joined to both sides of the beam (1). (3) is a metal joint of the present invention, and (4a)
Is a vertical mounting portion made of an iron plate having a predetermined thickness, and an upper end of the mounting portion (4a) is bent at right angles in a horizontal direction to integrally form the horizontal portion (5) of the present invention. doing. Further, the tip of the horizontal part (5) on the opposite side to the mounting part (4a) is bent vertically downward,
Another second mounting portion (4b) is formed integrally, and the first and second mounting portions (4a) and (4b) face each other.

At the center of the outer surface of each of the mounting portions (4a) and (4b), one vertical insertion support portion for joining the beam (2) is provided.
(7) (7) is extended and fixed, and the upper end of these insertion support portions (7) (7) is provided with a semi-circular bottom having a substantially V shape.
A letter-shaped notch (9) is formed, and a pair of upper and lower pin insertion holes (10) (10) are formed below the notch (9).

Corresponding to the insertion support portions (7) and (7), the end surfaces of the beams (2) and (2) joined to both side surfaces of the beam (1) are provided with the insertion support portions (7). ) Into which a slit (11) having a thickness and a width are formed, and a bolt hole (12) of this beam (2) formed corresponding to the notch (9) of the insertion support part (7).
(FIG. 2) has bolts (13) inserted and attached in advance. Further, pin insertion holes (15) (15) are formed corresponding to the pin insertion holes (10) (10) of the insertion support portion (7).

The metal joint (3) is a beam made of square wood.
The horizontal portion (5) is installed on the upper end surface of (1) from above, and the mounting portions (4a) and (4b) are installed in contact with the side surfaces of the beam (1). ) Inserts a lag screw (17) having a hexagonal head from above into a plurality of mounting holes (16) (16)... Formed in the horizontal portion (5). 17) is screwed into the upper end surface of the beam (1) and fixed. At that time, at the upper end of the beam (1),
It is desirable that a pilot hole for screwing the lag screw (17) be formed in advance. In the drawing, there are four mounting holes (16) (16)... Formed in the horizontal portion (5), but only two lag screws (17) are screwed in diagonally.

On the other hand, the mounting portions (4a) and (4b)
On both sides of (7), screws (19) are inserted into a plurality of mounting holes (18) (18)... Formed in advance in the mounting portion (4), and similarly screwed into the side surface of the beam (1). ing.

As described above, the joining hardware (3) is connected to the beam (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 fixedly attached to the insertion support portion (7) by driving in such a manner as to penetrate the pin insertion holes (10) and (10) of (7).

In the above mounting structure, the shear load from the beams (2) and (2) is applied to the bolts (13) fixing the beams (2) and (2) and the drift pins (14) and (14). To insertion support (7)
It is conveyed to (7). The shear load transmitted to the insertion support portions (7) (7) is transmitted from the mounting portions (4a) (4b) as a compressive force to the beam (1) via the horizontal portion (5). For this reason,
The screw (19) for fixing the mounting portions (4a) (4b) does not need to support such a shear load, and can be sufficiently supported by such a screw (19) or a nail.

In the above embodiment, the horizontal portion (5) is provided with a lag screw (17), and the mounting portions (4a) and (4b) are provided with general screws.
(19), but it is also possible to use the lag screw (17) on the mounting parts (4a) (4b) side, or, alternatively, the horizontal part (5) and the mounting parts (4a) (4b). Both can be fixed with screws or with nails.

FIG. 3 shows a pair of beams (2) and (2) on the side of the pillar (20).
Are joined in an L-shape, and these beams (2)
Attach the mounting parts (4a) and (4b) to the horizontal part (5) corresponding to the joint surface of (2).
It is connected to. At this time, a short lip (21) (21) bent vertically downward is integrally formed at the end of the horizontal portion (5) where the mounting portions (4a) and (4b) are not provided, (2
It is locked on the side of (0). These lips (21) are locked to the side of the column (20) opposite to the mounting portions (4a) (4b), so that the joint metal (3) moves against a horizontal load during an earthquake. To prevent The method of fixing the beams (2) and (2) is the same as in FIG.

FIG. 4 shows the beam (2) on the side of the pillar (20) from three directions.
(2) is an embodiment in which joints (4a), (4b), (4c) are provided correspondingly to the beams (2) (2) in the three directions, and A lip (21) is provided in a portion without the mounting portions (4a) (4b). The method of fixing the beams (2) and (2) is the same as in FIG.

Also, the joint hardware (3) in FIG. 1 and FIG.
Instead of (1), it can also be used when beams (2) and (2) are joined to opposing side surfaces of pillar (20). Also in this case, the beam
(2) A lip (2) that locks on the side of the pillar (20) where (2) does not join
It is desirable to provide 1). Furthermore, when the beam (2) is joined in four directions, the mounting parts (4a) are attached to all four sides of the horizontal part (5).
(4b) ... may be connected in series.

[0025]

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 a column or a 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 obtained. .

Further, since the mounting portion can be fixed with screws or the like, a bolt head or a nut having a large diameter does not protrude from the outer surface of the mounting portion as in the prior art. It is not necessary or necessary to form a deep concave notch on the end face of the other beam, so that the cross-sectional loss of the beam itself is reduced,
Precutting of the end face of the 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, and by forming two slits as in the prior art, the end of the beam can be formed. This can prevent a large cross-sectional defect from occurring.

Further, according to the present invention, the mounting portions for joining the frame members are integrally connected to one horizontal portion so as to correspond to the frame members in a plurality of directions to be joined. Even in the case where beams and the like are joined in a plurality of directions as described above, only one joining hardware is required, and the number of parts can be further reduced, and the number of mounting steps can be reduced.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a joint between beams, 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 an L-shaped joint between a column and a beam.

FIG. 4 is a perspective view of an embodiment in which beams are joined to a pillar side from three directions.

FIG. 5 is an exploded perspective view of a conventional joint between a column and a beam.

[Explanation of symbols]

 (1) Beam (2) Beam (3) Joint hardware (4a) (4b) (4c) Mounting part (5) Horizontal part (7) Insert support part (11) Slit (13) Bolt (14) Drift pin (17 ) Lug screw (19) Screw (20) Pillar (21) Lip

Claims (6)

[Claims] 1. A horizontal portion of a metal joint is placed and fixed on an upper surface of one of the frame members such as a pillar, and is fixed to the other frame member in a plurality of directions joined to a side surface of the one frame member. Correspondingly, a plurality of mounting portions in the vertical direction connected to the end of the horizontal portion are fixed to the side surface of one of the frame members, and the other shaft is mounted on a supporting portion projecting from the mounting portion. A joining structure for a wooden frame, wherein an end of the assembly member is fixed. 2. The joint structure 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 to fix a frame member to be joined, and a mounting portion of the mounting portion. A horizontal portion fixed to the upper surface of the one frame member, which is integrally provided at the upper end and whose mounting portion is fixed, and the other shaft assembly in a plurality of directions joined to the one frame member. A metal fitting for a wooden frame, wherein a plurality of said mounting portions are integrally and continuously provided at ends of a horizontal portion corresponding to members. 5. A lip that abuts a side surface of a frame member to which the horizontal portion is attached is provided integrally with a tip of the horizontal portion where the attachment portion is not continuously provided.
The metal fittings of the wooden frame described. 6. The mounting part and the horizontal part are formed integrally by bending a metal plate.
The metal fittings of the wooden frame described.