JP2012132258A - Joint hardware of wooden structure and joint part structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide joint hardware of a wooden structure and a joint part structure capable of improving the arrangement of attaching holes, setting the joint hardware itself to an appropriate outer shape dimension, preventing interference of a fixing member fixed to a structural material through the attaching holes, and preventing the structural material from being easily cracked.SOLUTION: In joint hardware 5 of the wooden structure including two fixing parts 5b, 5c to be attached and fixed to each of at least two structural materials, a column 1 and a beam 2 for instance, constituting a joint part 3 of the wooden structure, at one first fixing part 5b, a plurality of attaching holes 7 are formed in zigzag arrangement by arranging them in even-numbered columns at a fixed interval D in the width direction of the first fixing part and arranging them at a fixed pitch P shifting positions on the adjacent columns in the length direction of the first fixing part. At the other second fixing part 5c, the plurality of attaching holes are formed in inverted zigzag arrangement for which the zigzag arrangement is inverted in the width direction.

Description

  The present invention improves the arrangement of the mounting holes and can set the fitting itself to an appropriate external dimension, and prevents interference of a fixing member fixed to the structural material through these mounting holes. Further, the present invention relates to a fitting for a wooden structure and a fitting part structure that can prevent the structure material from easily cracking.

  In a wooden structure, a fitting is provided at a joint between a column and a beam or a base to be joined to each other for the purpose of reinforcement and as a mounting part for attaching a brace. Examples of the fittings are disclosed in Patent Documents 1 to 3.

  In the “bracket fixing bracket” of Patent Document 1, a first fixing part piece nailed to a column and a second fixing part piece nailed to a horizontal member such as a base are connected in an orthogonal direction. At one end along the longitudinal direction of each fixed part piece, an attaching part piece for attaching a brace in a direction orthogonal to each fixed part piece is connected and superposed on each other. In addition, through holes through which fastening rods such as nails for bracing are passed are provided in the attachment pieces so as to coincide with each other.

  The “earthquake-proof reinforcement hardware for building” of Patent Document 2 has an isosceles triangular triangular plate part made of an iron plate and having a right angle at one corner, and the corner part is bent from two sides sandwiching the right angle of the triangular plate part. A plurality of through holes and screws for screw bolts, which have side plate portions integrally connected by welding, are formed by installing rubber plates on the outer surface of the side plate portions, and are attached to the corners of the building on the side plate portions. A plurality of small holes for nails are drilled, and a single through hole for bolts for fastening a brace and a large number of small holes for nails are formed in the triangular plate portion as a set. Yes.

  The "joint reinforcement tool" of Patent Document 3 is composed of a joint reinforcement tool that is attached to a joint part that joins a horizontal member and a vertical member substantially at right angles, and is composed of attachment parts on both sides and a connecting part that connects these attachment parts. The deformed portion provided in the connecting portion is formed in a bellows shape by alternately bending along a plurality of bending lines extending radially from the inner corner of the joint portion, and the height of each bent portion. It is configured so that the thickness gradually increases from the side closer to the corner toward the outside. The width of the deformable portion may be narrowed so that deformation due to external force is concentrated on the deformable portion, or a brace is taken between the pair of joint reinforcing tools that are installed adjacent to each other.

JP-A-8-319671 JP-A-9-78694 JP 2010-31630 A

  When attaching a fitting to a structural material such as a pillar with a fixing member such as a screw or nail, make sure that the fixing member is firmly attached to the structural material so that the fixing member does not come out of the structural material before the fitting shows its performance. It is necessary to fasten. In recent years, there has been a growing need for fittings that can perform even under heavy loads and large-scale deformations, and the length of the neck length of fixing members such as screws used for such fittings is also increasing. Measures such as using long ones or increasing the number are necessary.

  The fitting is provided with a fixing part with an attachment hole through which the fixing member is inserted for attachment to the structural material. When the number of fixing members is increased, it is necessary to increase the fixing part attachment hole. There is. If it is simply arranged vertically in a straight line, the fixed part will become large, and the fitting will become large and uneconomical. Therefore, it is desired to improve the arrangement of the mounting holes.

  On the other hand, when viewed from the wooden structure material of a wooden structure, when the fitting is attached and fixed from two front and rear directions, or from the left and right direction, it may be fixed from three and even four directions. In addition, the fixing member is complicatedly complicated inside the structural material. If interference occurs between the complicated fixing members, it is easy to receive a large load or large-scale deformation even if the fitting can not be properly fixed to the structural material or it can be fixed. However, there is a problem that the structural material may be cracked. From this aspect as well, improvement of the mounting hole arrangement is desired.

  The present invention was devised in view of the above-described conventional problems, and it is possible to improve the arrangement of the mounting holes and set the fitting itself to an appropriate external dimension. An object of the present invention is to provide a fitting for a wooden structure and a fitting part structure that can prevent interference of a fixing member that is fixed to the structural material through a structure and can prevent the structural material from easily cracking. And

  A fitting for a wooden structure according to the present invention is a fitting for a wooden structure having two fixing parts for fixing to each of at least two structural members constituting the fitting part of the wooden structure. Among the two fixing parts, one of the first fixing parts has a plurality of mounting holes arranged in an even number of rows spaced apart in the width direction of the first fixing part. In the length direction, the adjacent rows are shifted in position and arranged at a constant pitch, and formed in a staggered arrangement, and the other second fixing portion has a plurality of mounting holes, and the zigzag arrangement is inverted in the width direction. It is characterized by being formed in an inverted staggered arrangement.

  In the zigzag arrangement and the inverted zigzag arrangement of the mounting holes formed in the first and second fixing parts, either the zigzag arrangement or the inversion zigzag arrangement is in the length direction of the fixing part. It is characterized by being formed by shifting the position.

  The joint structure of the wooden structure according to the present invention is a joint structure of a wooden structure to which the fitting of the wooden structure is attached, and any one of the structural materials constituting the joint section The first and second fittings disposed around are one of the first fittings is the first fixing part and the other of the second fittings is the second fixing part. It is characterized by being bonded to the structural material.

  The first and second fittings are joined in an arrangement that sandwiches the structural material from the front-rear direction, and the additional fitting is joined from the left-right direction of the structural material to add the additional fitting. The staggered arrangement and the inverted staggered arrangement of the mounting holes formed in the first and second fixing parts of the first and second fittings are arranged in a staggered manner relative to the staggered arrangement and the inverted staggered arrangement of the first and second fittings. Thus, the position is shifted in the length direction.

  In the fitting and fitting structure of the wooden structure according to the present invention, the fitting itself can be set to an appropriate external dimension by improving the arrangement of the attachment holes. Thus, it is possible to prevent interference of the fixing member fixed to the structural material via the, and to prevent the structural material from being easily cracked, and to improve the yield strength of the joint portion.

It is a perspective view which shows suitable one Embodiment of the fitting of the wooden structure concerning this invention. It is a perspective view which shows the additional joint fitting applied to the joint part structure of the wooden structure concerning this invention. It is a schematic perspective view which shows suitable one Embodiment of the joint part structure of the wooden structure concerning this invention. FIG. 4 is a plan sectional view showing a state in which a fitting is attached and fixed to a pillar constituting the fitting structure of the wooden structure in FIG. 3. It is a schematic perspective view which shows the modification of the joint part structure of the wooden structure of FIG. It is a schematic perspective view which shows the modification which applied the additional fitting metal fitting to the fitting part structure of the wooden structure of FIG. It is a perspective view which shows the modification of the fitting of the wooden structure concerning this invention.

  DESCRIPTION OF EMBODIMENTS Preferred embodiments of a fitting for a wooden structure and a fitting structure for a wooden structure according to the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 shows a joint 3 formed by joining a pillar 1 which is a wooden structure material and a horizontal member such as a beam 2 or a base. The corner portion 4 of the joint portion 3 is formed by one side surface of the column 1 and one side surface of the beam 2 facing each other, and these side surfaces are used for attaching and fixing the joint fitting 5 to the column 1 and the beam 2 respectively. Two mounting surfaces 1a and 2a are formed.

  First, the fitting 5 of the wooden structure according to the present embodiment will be described. As shown in FIG. 1, the fitting 5 is formed by processing a plate material, and is provided on a support plate portion 5a having a size extending from the column 1 to the beam 2 and two mounting surfaces 1a and 2a of the column 1 and the beam 2, respectively. And two fixing portions 5b and 5c formed by bending from the support plate portion 5a. As described in the background art, the support plate portion 5a may have a flat plate shape or a bent plate shape.

  The fixing portions 5b and 5c have mounting holes 7 through which fixing members 6 (see FIGS. 3 and 4) such as coach bolts, screws, and nails for mounting and fixing the fitting 5 to the column 1 and the beam 2 are inserted. A plurality are formed. The attachment hole 7 is formed by perforation.

  Of the two fixing parts 5b, 5c, the mounting holes 7 formed in one of the first fixing parts 5b are arranged at regular intervals D in the width direction set to the short dimension of the first fixing part 5b. Are formed side by side to form The columns are set to even columns such as 2 columns or 4 columns. In addition, the mounting holes 7 are formed side by side at a constant pitch P in the length direction set to the long dimension of the first fixing portion 5b in each row. Further, the mounting holes 7 are formed in adjacent rows with their positions shifted from each other. Thereby, the some attachment hole 7 of the 1st fixing | fixed part 5b is formed by what is called a staggered arrangement | positioning.

  The amount X for shifting the mounting holes 7 between adjacent rows may be set in any way as long as one mounting hole 7 in one row is located between two mounting holes 7 in the other adjacent row. . If the shift amount X is half of the pitch P (1/2 · P), the mounting holes 7 can be arranged in a well-balanced manner, and the fixing is fixed to the column 1 or the beam 2 through the mounting holes 7. The member 6 can also be arranged with good balance.

  Of the two fixing parts 5b and 5c, the plurality of mounting holes 7 formed in the other second fixing part 5c are reversed when the first fixing part 5b is projected by placing a mirror on the support plate part 5a. As can be understood from the appearance, the zigzag arrangement is an inverted zigzag arrangement obtained by inverting the zigzag arrangement in the width direction, and is formed in an arrangement different from that of the first fixed portion 5b.

  Further, the additional fitting 5Z described later has the same configuration as the fitting 5 shown in FIG. 1 except that the attachment hole 7 is formed at a different position. As shown in FIG. 2, the staggered arrangement and the inverted staggered arrangement of the mounting holes 7z formed in the first and second fixing portions 5d, 5e of the additional fitting 5Z are the fittings 5 shown in FIG. The fixing holes 5d and 5e are formed so as to be displaced in the length direction with respect to the zigzag arrangement and the inverted zigzag arrangement of the mounting holes 7 (indicated by phantom lines in FIG. 2). In other words, the staggered and inverted staggered regions are displaced in the length direction of the fixed portions 5d and 5e.

  The shift amount Y is determined when the first fixing portions 5b and 5d or the second fixing portions 5c and 5e of the fitting 5 shown in FIG. 1 and the additional fitting 5Z shown in FIG. , 7z are set so as not to coincide with each other.

  Next, the joint structure of the wooden structure according to this embodiment will be described. FIGS. 3 and 4 show an example in which two fittings 5 and 5 are arranged around one of the wooden structural materials constituting the fitting portion 3, for example, around the pillar 1. The illustrated example corresponds to a state in which the support plate portion 5a is set at the center in the width direction of the column 1 and the fittings 5 and 5 are arranged from the front-rear direction of the column 1, and the first fitting in front is provided. The position 5 of the mounting hole 7 is indicated by a white square, and the position of the mounting hole 7 of the rear second fitting 5 is indicated by a matte square.

  When these first and second fittings 5 and 5 are attached and fixed from the front and rear of the same column 1, the first fitting 5 is the first fixing portion 5 b and the second fitting 5 Is joined to the pillar 1 by the second fixing portion 5c. Conversely, the first fitting 5 may be joined by the second fixing portion 5c and the second fitting 5 may be joined by the first fixing portion 5b. In short, the two fittings 5 and 5 are attached to the column 1 by the fixing holes 6 inserted through the mounting holes 7 in the staggered arrangement and the mounting holes 7 in the inverted staggered arrangement.

  FIG. 4 shows a flat cross section of the column 1, and is a thin two-dot chain line in which the fixing member 6 positioned lower than the fixing member 6 positioned relatively higher in the height direction of the column 1 is broken. The fixing members 6 are arranged at positions avoiding each other in the vertical and horizontal directions.

  In the fitting 5 of the wooden structure and the fitting structure of the wooden structure according to the present embodiment, the interference between the fixing members 6 by the mounting holes 7 in the staggered arrangement and the inverted staggered arrangement. It can join to the pillar 1 without.

  Further, the staggered arrangement and the inverted zigzag arrangement have a relationship in which one fills the other void and compensates, and the fixing members 6 driven from the mounting holes 7 in accordance with these arrangements are evenly distributed and arranged in the column 1. The fitting 5 can be attached and fixed without impairing the column strength, such as easily cracking 1. Therefore, the yield strength of the joint 3 can be improved.

  Further, the staggered arrangement and the inverted staggered arrangement allow the mounting holes 7 to be formed efficiently in terms of space, and the fitting 5 itself can be set to an appropriate external dimension even if the mounting holes 7 are increased. .

  FIG. 5 shows a modification of the above embodiment. FIG. 5 shows an example in which three fittings 5 are arranged around the pillar 1 (the fittings behind the pillar 1 are not shown). The illustrated example corresponds to a state in which the support plate 5a is set at the center in the width direction of the column 1 and two fittings 5 are arranged from the front and rear direction of the column 1 and one from the right side of the column 1. The front mounting hole 7 position of the first fitting 5 is indicated by a white square, and the right mounting hole 7 position of the second fitting 5 is indicated by a matte square.

  When these first and second fittings 5 and 5 are attached and fixed from the front, rear and right sides of the same column 1, it can be understood from the direction of the support plate 5a indicated by the broken line in FIG. In addition, the first fitting 5 is joined to the column 1 by the first fixing portion 5b, and the second fitting 5 is joined by the second fixing portion 5c. Conversely, the first fitting 5 may be joined by the second fixing portion 5c and the second fitting 5 may be joined by the first fixing portion 5b. Even in this example, the fitting 5 is attached to the column 1 from three sides by the fixing member 6 inserted through the attachment hole 7 in the staggered arrangement and the attachment hole 7 in the inverted zigzag arrangement.

  In the example shown in FIG. 5, in particular, the arrangement of the mounting holes 7 in the mounting surface 1a on the front surface of the column 1 and the mounting surface 1a on the right side repeats coarse and dense with the end edge 1b of the column 1 being sandwiched (in the figure, 3 One → two → three → two). When the first and second fittings 5 and 5 are joined by the same fixing part (for example, the first fixing parts 5b and 5b), the end edge 1b of the column 1 becomes dense and is sparse at a position away from the end edge 1b. However, as shown in the drawing, such imbalance does not occur by joining at different fixing portions 5b and 5c, and the fixing member 6 also has the pillar 1 according to the arrangement of the mounting holes 7. The metal fittings 5 can be attached without being spoiled and distributed evenly in the interior without impairing the column strength.

  Even in FIG. 5, it is needless to say that the same effects as the examples described in FIGS. 3 and 4 can be obtained.

  In FIG. 5, the case where the fitting 5 is attached from three directions has been described as an example. Of course, it may be configured.

  FIG. 6 shows a case where the above-described additional fitting 5Z is used as another modified example of the above embodiment. FIG. 6 shows an example in which three fittings 5 and 5Z are arranged around the pillar 1 as in FIG. 5 (the fittings behind the pillar 1 are not shown).

  In the illustrated example, the support plate portion 5 a is set at the center in the width direction of the column 1, and two fittings (first and second fittings) 5 are placed to the right of the column 1 from the front-rear direction of the column 1. Corresponds to a state in which one additional fitting 5Z is arranged, the mounting hole 7 position of the front fitting 5 is a white square, and the mounting hole 7z position of the right additional fitting 5Z Is shown as a satin rectangle.

  Even when these front fitting 5 and additional fitting 5Z are mounted and fixed from the front and the right side of the same column 1, the front fitting 5 is added by the first fixing portion 5b (staggered arrangement). The fitting 5Z is joined to the column 1 by the second fixing portion 5e (inverted staggered arrangement). On the contrary, the front fitting 5 may be joined by the second fixing portion 5c (inverted staggered arrangement), and the additional fitting 5Z may be joined by the first fixing portion 5d (staggered arrangement). Even in this example, the fixing holes 6 are inserted through the mounting holes 7 in the zigzag arrangement and the mounting holes 7z in the reverse zigzag arrangement or the mounting holes 7 and 7z in the opposite arrangement, and the fittings 5, 5Z is attached to the pillar 1 from three directions.

  Since the additional fitting 5Z on the right side is shifted in a staggered arrangement and an inverted staggered arrangement with a shift amount Y with respect to the front and rear fittings 5, further preventing interference between the fixing members 6 The fittings 5 and 5Z can be joined to the column 1. In particular, when it is necessary to use the fixing member 6 having a long neck length and interference inside the pillar 1 cannot be avoided, the joint part structure is appropriately configured by using the additional joint fitting 5Z. can do.

  Further, in the relationship between the staggered arrangement and the inverted staggered arrangement of the two fittings 5 in the front-rear direction, there is still room in space, and the mounting holes of the staggered arrangement or the inverted zigzag arrangement in which the additional fitting 5Z is displaced. 7z has a relation to fill this room, and the fixing members 6 driven from the mounting holes 7 and 7z according to these arrangements are more evenly and evenly distributed in the column 1 and the column 1 is easily cracked. The fittings 5 and 5Z can be attached and fixed without impairing the strength.

  Even in the additional fitting 5Z, the mounting hole 7z can be formed in a space efficient manner by the staggered arrangement and the inverted zigzag arrangement, and even if the mounting hole 7z is increased, the additional fitting 5Z. It can be set to an appropriate external dimension.

  In FIG. 6, the case where the fitting 5 and the additional fitting 5Z are attached from three directions has been described as an example, but either the fitting 5 in the front-rear direction and the additional fitting in the left-right direction are described. Of course, the joint part structure may be configured by attachment from two directions by 5Z, or attachment from four directions by two joint fittings 5 in the front-rear direction and two additional joint fittings 5Z in the left-right direction. .

  FIG. 7 shows a modified example of the fitting 5 of the wooden structure according to the embodiment. In the additional fitting 5Z shown in FIG. 2 with respect to the fitting 5 shown in FIG. 1, the staggered arrangement and the inverted zigzag arrangement areas are shifted in both the first and second fixing portions 5d and 5e. However, as in the fitting 5P shown in FIG. 7, the position may be shifted only by any one of the fixing portions (in the illustrated example, the first fixing portion 5f). That is, in this modification, regarding the staggered arrangement and the inverted zigzag arrangement of the mounting holes 7 and 7z formed in the first and second fixing portions 5f and 5g, either one of the staggered arrangement or the inverted zigzag arrangement is On the other hand, the position is shifted in the length direction of the fixed portion 5f. By forming such a fitting 5P, it is possible to increase the variation of attachment to the structural material, and to prevent interference of the fixing member 6 fixed to the structural material via the attachment holes 7 and 7z. At the same time, it is possible to prevent the structure material from being easily cracked.

1 Pillar 2 Beam (Horizontal material)
3 Joint part 5 Joint fitting 5Z Additional joint fitting 5b to 5e First and second fixing parts 7 Mounting hole for joint fitting 7z Mounting hole for additional joint fitting

Claims (4)

In a fitting for a wooden structure having two fixing portions for fixing to each of at least two structural materials constituting the fitting portion of the wooden structure,
Among the two fixing parts, one of the first fixing parts has a plurality of mounting holes arranged in an even number of rows spaced apart in the width direction of the first fixing part. In the length direction, the positions are shifted in adjacent rows and arranged at a constant pitch, and formed in a staggered arrangement,
In the other second fixing portion, a plurality of mounting holes are formed in an inverted staggered arrangement obtained by inverting the staggered arrangement in the width direction.   In the zigzag arrangement and the inverted zigzag arrangement of the mounting holes formed in the first and second fixing parts, either the zigzag arrangement or the inversion zigzag arrangement is in the length direction of the fixing part. 2. The fitting for a wooden structure according to claim 1, wherein the fitting is formed by shifting the position of the metal structure. A fitting structure for a wooden structure to which a fitting for a wooden structure according to claim 1 or 2 is attached,
The first and second fittings arranged around any one of the structural members constituting the fitting part, one of the first fittings is the first fixing part, and the other of the above-mentioned fitting parts. A fitting structure for a wooden structure, wherein the second fitting is joined to the structural member at the second fixing portion. Joining the first and second fittings in an arrangement that sandwiches the structural material from the front-rear direction, and joining the additional fittings from the left-right direction of the structural material,
The staggered arrangement and the inverted staggered arrangement of attachment holes formed in the first and second fixing portions of the additional fittings are the staggered arrangement of the attachment holes of the first and second fittings and The joint structure of a wooden structure according to claim 3, wherein the structure is formed by shifting the position in the length direction with respect to the inverted staggered arrangement.

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