JP2017160763A - Joining hardware for wooden structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To further enhance bearing force, since a deep second swelling part 40 (rib processing) is formed in a shallow first swelling part 30 (bead processing).SOLUTION: A first hardware piece 5 fixed to first wood and a second hardware piece 15 fixed to second wood are joined by a bending wire 3, and are formed as a hardware base material 1 by being arranged in θ=90°. A first swelling part 30 is formed by widely swelling the whole central side toward the surface 7, 17 side by leaving wood abutting parts 4 and 14 on the outer peripheral edge side by the hardware base material 1. Assuming a thickness of the hardware base material 1 as t0, and a distance of a step difference between surfaces 11 and 21 of the hardware base material 1 and a surface 31 of the first swelling part 30 as t1, it is formed by [t1=(0.4-0.5)×t0]. Joining hardware 50 is constituted by forming joining holes 46 and 47 by forming a second swelling part 40 by largely swelling (being sufficiently deeper than the first swelling part 30) to the surface 31 side in a central part of the bending wire 32 of the first swelling part 30.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a metal fitting for a wooden structure used when joining wooden members constituting a wooden structure.

  To reinforce a joint where the first wood and the second wood are joined at right angles, such as a joint between the base and the pillar, use a joint hardware obtained by bending the first hardware piece and the second hardware piece at a right angle. It was. In this case, when a load is applied to the joint, the right angle between the first hardware piece and the second hardware piece of the joining hardware is maintained, and the first hardware piece and the second hardware piece of the joining hardware are turned up. In addition, it was necessary to adhere to the surfaces of the first wood and the second wood, respectively.

  In order to maintain this, a deep reinforcing rib is formed between the first hardware piece and the second hardware piece (FIG. 10 of Patent Document 1), or a reinforcing plate on the outside of the first hardware piece and the second hardware piece. (Patent Document 1 FIGS. 8 and 14). In some cases, both a reinforcing rib and a reinforcing plate are formed (Patent Document 2).

  There has also been a proposal to form a belt-like bulging rib between the first hardware piece and the second hardware piece (Patent Document 3). In addition, the first metal piece and the second metal piece are not a metal object joined at a right angle, but a relatively shallow ridge is crossed vertically and horizontally to form an integral shallow ridge or a circular ridge in the protruding direction. There was also a proposal to provide and reinforce (Patent Document 4).

JP 2006-132120 A JP 2014-214432 A JP 2009-35896 A Japanese Utility Model Publication No. 53-139112

  In the conventional example, the first metal piece and the second metal piece are formed to protrude from the portion that is in close contact with the surface of the first wood and the second wood to form some reinforcing portion. However, there are cases where a greater effect is required.

  In the present invention, the first bulge portion is formed from the portion that is in close contact with the surfaces of the first and second timbers, and the second bulge portion is further formed in the first bulge portion. did.

That is, this invention is a hardware used when joining a wooden first wood and a wooden second wood,
This is a metal fitting for a wooden structure characterized by the following configuration.
(1) Forming a metal base material that can be disposed on both sides of the boundary line between the first wood and the second wood, and hitting the first wood and the second wood with the hardware base material. The contact surface is the back surface, and the other surface is the front surface.
(2) The metal base material is formed with a first joint hole group for fixing to the first wood and a second joint hole group for fixing to the second wood, respectively. The periphery including the first joint hole group and the second joint hole group is defined as a member contact portion.
(3) The metal base is formed with a first bulging portion that protrudes to the surface side at a position sandwiching the joining boundary line at a portion other than the member contact portion.
(4) The first bulging portion is formed with a second bulging portion that protrudes further to the surface side across the joining boundary line.
(5) The second bulge portion is formed to have a deeper structure than the first bulge portion.

According to another aspect of the present invention, there is provided a metal structure for use in a joining portion in which a first wooden wood and a second wooden wood are substantially orthogonal to each other, and is configured as follows. It is a hardware.
(1) A first metal piece that can be in contact with the first wood and a second metal piece that is in contact with the second wood are arranged substantially at right angles to form a metal base.
(2) The hardware base material is configured such that a bent line of the first hardware piece and the second hardware piece can be made to coincide with a joining boundary line between the first wood and the second wood, Let the surface which contact | abuts the said 1st wood and 2nd wood with the said metal base material be a back surface, and let another surface be a surface.
(3) The metal base has a first joint hole group for fixing the first metal piece to the first wood and a second joint hole group for fixing the second metal piece to the second wood. Each is formed.
(4) A member contact portion is formed on the outer peripheral side of the metal base material, and the member contact portion includes the first joint hole group and the second joint hole group.
(5) The metal base is formed with a first bulging portion that protrudes to the surface side at a position sandwiching the bending line at a portion other than the member contact portion.
(6) The first bulging portion protrudes from the surface of the contact portion of the mold base by substantially the same length.
(7) The first bulge portion is formed with a second bulge portion that protrudes further to the front surface side across the bending line.
(8) The second bulge portion is formed to have a deeper structure than the first bulge portion.

Moreover, in each said invention, it is the following structure, It is the joining metal fitting for wooden structures characterized by the above-mentioned.
(1) When the thickness of the hardware base material is t0,
A level difference t1 between the surface of the metal base material and the surface of the first bulge portion,
0.1 × t0 <t1 <1 × t0
It was.

  In the above, “the second bulging portion is formed in a structure deeper than the first bulging portion” means “the distance (length) between the surface of the metal base and the surface of the first bulging portion”. “The distance (length) between the surface of the first bulge and the surface of the second bulge” is large. In general, the surface of the first bulge portion is assumed to have a flat structure, but the surface of the second bulge portion is also assumed to have irregularities, and the metal base material is composed of the first metal base material piece and the second metal base material piece. It consists of a metal base piece. Therefore, in each of the first hardware base piece and the second hardware base piece, or in the whole of the first hardware base piece and the second hardware base piece, the surface of the hardware base, the first bulging portion Regardless of the unevenness of the surface or the surface of the second bulging portion, the comparison of the sizes is determined by the average or the maximum size.

  In the present invention, since the deep second bulge portion (rib processing) is formed in the shallow first bulge portion (bead processing), the first bulge portion (bead processing) against the deformation of the joint hardware. Is excellent in torsional rigidity and effective range, and the second bulging portion (rib processing) is excellent in bending rigidity. Therefore, since the deep 2nd bulge part (rib process) was formed in the 1st bulge part (bead process), the effect of both bulge parts was match | combined and the joining metal hardware which raised the yield strength can be comprised. Such a joint metal fitting is optimally applied particularly at a joint where the first wood and the second wood are joined at right angles and a pulling force acts.

(A) is a plan view, (b) is a front view, and (c) is a right side view. (A) is AA sectional drawing of FIG.1 (b), (b) represents BB sectional drawing of FIG.1 (b). The perspective view of the state which attached the metal fitting was represented.

Embodiments of the present invention will be described with reference to the drawings.

1. Structure of metal fitting 50

  In this embodiment, the joint hardware 50 is placed between the base (first wood) and the pillar (second wood), or between the lower frame (first wood) and the vertical frame (second wood) that stretches the floorboard. This is the case.

(1) The steel plate is bent at about 90 ° to form the metal base 1 composed of the first metal piece 5 and the second metal piece 15. A boundary between the first hardware piece 5 and the second hardware piece 15, that is, a bent position is defined as a bending line 3. The first metal piece 5 is a member that is fixed in close contact with the surface of the first wood, and the second metal piece 15 is a member that is fixed in close contact with the surface of the second wood. Therefore, when the bending line 3 is viewed in the axial direction, the side of the first hardware piece 5 and the side of the second hardware piece 15 intersect at an angle θ (angle θ = 90 °) with the bending line 3 as the center. (FIG. 1 (c)).
In the first metal piece 5 and the second metal piece 15, the surfaces contacting the wood are the back surfaces 7 a and 17 a, and the other surfaces of the back surfaces 7 a and 17 a are the front surfaces 7 and 17. That is, the surfaces of the first metal piece 5 and the second metal piece 15 facing each other at 90 ° (= θ) are the front surfaces 7 and 17, and the sides facing the 270 ° are the back surfaces 7 a and 17 a (FIG. 1 ( c)).
Further, in the first hardware piece 5 and the second hardware piece 15, when the bending line 3 is the base end, the free end side (opposite side of the bending line 3) is the front ends 6 and 16 (FIG. 1).

(2) The entire metal base 1 is bulged from the back surface 7a, 17a side to the front surface 7, 17 side, leaving the remaining portion on the outer peripheral edge side, and the first bulging portion 30 Form. The remaining portion formed on the outer peripheral edge side is a wood contact portion 4, the first metal piece 5 side is a first wood contact portion 9, and the second hardware 15 side is a second wood contact portion 19.
The first bulging portion 30 is a so-called bead and is formed shallow, and when the thickness of the first wood contact portion 9 (metal base material 1) is t0, the thickness of the first bulging portion 30 is also t0, When the distance t1 of the step between the surface 11 of the first wood contact portion 9 and the surface 31 of the first bulge portion 30,
t1 = (0.4 to 0.5) × t0
Form with degree. In addition, the level | step difference of the back surface of the 1st wood contact part 9 and the back surface of the 1st bulging part 30 is also t1 (not shown).
Similarly, when the thickness of the second wood contact portion 19 (the metal base material 1) is also t0, the step distance t1 between the surface 21 of the second wood contact portion 19 and the surface 31 of the first bulging portion 30 is assumed. ,
t1 = (0.4 to 0.5) × t0
It is formed with a degree. In addition, the level | step difference of the back surface of the 2nd wood contact part 19 and the back surface of the 1st bulging part 30 is also t1 (not shown).
Accordingly, the first bulging portion 30 has the surfaces 7 and 11 (rear surfaces 7 a and 17 a) at an angle of 90 ° on the first metal piece 5 side and the second metal piece 15 side, and the bent base material 1 is bent. A bent line 32 of the first bulging portion 30 corresponding to the line 3 is formed (FIGS. 1A and 1B, FIG. 2).

(3) Subsequently, in the first bulging portion 30 (first hardware piece 5 side) and the first bulging portion 30 (second hardware piece 15 side), on the left and right center side (FIGS. 1A and 1B). ) So as to eliminate the central portion of the bent line 32, that is, in a direction in which the angle θ is divided (FIG. 1C), the second bulging portion 40 is formed by bulging greatly toward the surfaces 31 and 31. . The second bulging portion 40 passes the surface 31 of the first bulging portion 30 (first hardware piece 5) and the surface 31 of the first bulging portion 30 (second hardware piece 15) through the bending line 32. A ridgeline 43 is formed that is connected obliquely (FIG. 1).
Further, the second bulging portion 40 has a maximum width D2 in the vicinity of the bending line 32, becomes narrower toward the tip end 6 side of the first hardware piece 5, and narrows toward the tip end 16 side of the second hardware piece 15. Is formed.
Accordingly, the second bulging portion 40 has a substantially isosceles triangle (in the direction facing the surface 7 of the first hardware piece 5) in plan view (the apex is the tip 41), and is viewed in front (the surface of the second hardware piece 15). 17 is a substantially isosceles triangle (the apex is the tip portion 42), and is formed in a substantially rhombic shape when viewed from the ridge line 43 of the second bulging portion 40 (direction perpendicular to the bending line 32).
In addition, the second bulging portion 40 is formed at a depth L1 from the surface 31 of the original first bulging portion 30 in the vicinity of the ridgeline (FIG. 2A, with respect to the step t1 of the first bulging portion 30. And
t1 <L1
And formed sufficiently deeper than the step t1.

(4) According to the shape of the second bulging portion 40 as described above, the first bulging portion 30 is formed with the maximum width D1 in the vicinity of the bending line 32 (near the bending line 3). On the 5th side, it is formed with a width D11 so that the tip 6 side is narrowed (D11 <D1). Similarly, according to the shape of the 2nd bulging part 40, it forms with the width | variety D12 as a shape which narrowed down the front-end | tip 16 side at the 2nd metal piece 15 side (D12 <D1).

(5) Two joint holes 46 are formed in the first wood contact portion 9 on the first metal piece 5 side, and the first joint hole group is configured from the joint holes 4646. Further, the second wood abutting portion 19 on the second metal piece 15 side forms four joint holes 47 and 47, and the joint holes 47 and 47 constitute a second joint hole group.
The joint holes 46, 46 on the first metal piece 5 side are arranged on the tip 6 side from the tip part 41 of the second bulge portion 40. Similarly, the joint holes 47, 47 on the second metal piece 15 side are 2 The tip portion 42 of the bulging portion 40 is disposed on the tip 10 side.

(6) The metal joint 50 is configured as described above (FIGS. 1 and 2). In addition, the said embodiment does not explain a manufacturing process, A manufacturing process is arbitrary if it can be comprised with the above final structures (not shown).

(7) In the above description, a step between the surfaces 11 and 21 of the mold base 1 (the first wood contact portion 9 and the second wood contact portion 19) and the surface 31 of the first bulge portion 30 is a distance t1, If
t1 = (0.4 to 0.5) × t0
Although formed in the degree,
0.1 × t0 <t1 <1 × t0
Select by degree. When the level difference t1 is smaller than “0.1 × t0 <t1,” the effect of the level difference cannot be expected. When the level difference t1 is “t1 <1 × t0”, the second is applied when a load is applied. There is a possibility that the bulging portion is deformed to the wood side, and the above range is set.

(8) Moreover, in the above, each dimension is, for example,
Material thickness t0 = 2.3 mm of the metal base 1
Distance t1 = 1mm
Distance L1 = 11.5mm
However, it can be selected and adopted within the above criteria.

2. Use of metal fittings 50

(1) The joint hardware 50 is used as a so-called corner hardware in the same manner as a normal corner hardware.

(2) For example, a joint portion in which a vertical frame 55 (substantially vertical direction) is joined to a lower frame 54 (substantially horizontal direction) sandwiching the peripheral edge portion of the floor plywood 53 on the floor joist 52, and the upper surface of the lower frame 54 The back surface 7a of the first wood contact portion 9 (first hardware piece 5) is contacted, and the second wood contact portion 19 (second hardware piece 15) is contacted and placed on the side surface of the vertical frame 55, Wood screws (such as screws) 75 and 75 are driven through the joint holes 46 and 47, respectively, and the joint hardware is fixed to the woods 52, 53, 54, and 55 (FIG. 3).
At this time, in the first hardware piece 5, the periphery of the head of the wood screw used for the two joining holes 46, 46 is located at the edge of the first bulging portion 30. Moreover, in the 2nd metal piece 15, the circumference | surroundings of the head of the wood screw used for the two joining holes 47 and 47 near the bending line 32 (bending line 3) are located in the 1st bulging part 30 edge (FIG. 3).

3. Other embodiments

(1) In the said embodiment, if the 1st bulging part 30 is formed widely shallowly, and the 2nd bulging part 40 is formed deeper than the 1st bulging part, the shape is arbitrary.

(2) Moreover, in the said Example, although the 1st member 5 and the 2nd member 15 crossed at right angle (angle (theta) = 90 degrees), the metal base material 1 was used, but the 1st member 5, the 2nd member 15, However, the first member 5 and the second member 15 are formed in a linear shape (that is, the angle θ = 180). )) (None is shown).

1 Hardware base 3 Bending line (bonding boundary line)
4 Wood contact portion 5 First metal piece 6 Tip 7 of first metal piece 7 First metal piece surface 7a Back surface 9 of first metal piece 9 First wood contact portion 11 Surface 15 of first wood contact portion Second metal piece 16 Front end 17 of second metal piece Surface 17a of second metal piece 9 Back surface 9 of second metal piece 19 Second wood contact portion 21 Surface 30 of second wood contact portion First bulge portion 31 Surface 32 of first bulge portion Bend line (bonding boundary line) of first bulge portion
40 Second bulging portion 41 Front end of second bulging portion (first hardware piece side)
42 Tip of second bulge (second hardware piece side)
43 Ridge lines 46 and 47 of the second bulge part Joining hole 50 Joining hardware 52 Floor joist 53 Floor plywood 54 Lower frame (first wood)
55 Vertical frame (2nd wood)

Claims (3)

It is a hardware used when joining a wooden first wood and a wooden second wood,
A metal fitting for a wooden structure characterized by the following configuration.
(1) Forming a metal base material that can be disposed on both sides of the boundary line between the first wood and the second wood, and hitting the first wood and the second wood with the hardware base material. The contact surface is the back surface, and the other surface is the front surface.
(2) The metal base material is formed with a first joint hole group for fixing to the first wood and a second joint hole group for fixing to the second wood, respectively. The periphery including the first joint hole group and the second joint hole group is defined as a member contact portion.
(3) The metal base is formed with a first bulging portion that protrudes to the surface side at a position sandwiching the joining boundary line at a portion other than the member contact portion.
(4) The first bulging portion is formed with a second bulging portion that protrudes further to the surface side across the joining boundary line.
(5) The second bulge portion is formed to have a deeper structure than the first bulge portion. It is a hardware used for a joint portion in which a wooden first wood and a wooden second wood are substantially orthogonal,
A metal fitting for a wooden structure having the following configuration.
(1) A first metal piece that can be in contact with the first wood and a second metal piece that is in contact with the second wood are arranged substantially at right angles to form a metal base.
(2) The hardware base material is configured such that a bent line of the first hardware piece and the second hardware piece can be made to coincide with a joining boundary line between the first wood and the second wood, Let the surface which contact | abuts the said 1st wood and 2nd wood with the said metal base material be a back surface, and let another surface be a surface.
(3) The metal base has a first joint hole group for fixing the first metal piece to the first wood and a second joint hole group for fixing the second metal piece to the second wood. Each is formed.
(4) A member contact portion is formed on the outer peripheral side of the metal base material, and the member contact portion includes the first joint hole group and the second joint hole group.
(5) The metal base is formed with a first bulging portion that protrudes to the surface side at a position sandwiching the bending line at a portion other than the member contact portion.
(6) The first bulging portion protrudes from the surface of the contact portion of the mold base by substantially the same length.
(7) The first bulge portion is formed with a second bulge portion that protrudes further to the front surface side across the bending line.
(8) The second bulge portion is formed to have a deeper structure than the first bulge portion. 3. The metal fitting for a wooden structure according to claim 1 or 2, characterized in that it is configured as follows.
(1) When the thickness of the hardware base material is t0,
A level difference t1 between the surface of the metal base material and the surface of the first bulge portion,
0.1 × t0 <t1 <1 × t0
It was.

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