JP2011006889A - Reinforcing fitting for wooden building - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a reinforcing fitting which effectively increases pull-out strength of a column 5 with respect to a bedsill of a wooden building and a beam thereof.SOLUTION: This reinforcing fitting includes a reinforcing fitting body 1 which is attached to an internal corner portion between the column 5 and the bedsill 4 or the beam, and a reinforcing plate 2; the reinforcing fitting body 1 comprises vertical and horizontal plate portions 6 and 7 which abut on both perpendicular side surfaces of the internal corner portion, and which are fixed by means of fixing implements (coach screws 19 and 21 and anchor bolts and nuts 18 and 23), respectively; and the reinforcing plate 2, which is made of a strip-shaped plate long in the length direction of the column 5, comprises an overlap portion 13 which overlaps a vertical plate portion 6 of the reinforcing fitting body 1 and which is fixed to the column 5 by means of the fixing implement (the coach screw 19) for fixing the vertical plate portion 6 to the column, and an extended portion 14 which is directly fixed to the column 5 by means of a fixing implement (a coach screw 20).

Description

  The present invention relates to a reinforcing metal fitting for a wall frame configured in a rectangular shape by pillars, foundations, beams and the like of a wooden building.

  As described in Patent Document 1, there is known a reinforcing bracket having a substantially right-angled triangular side surface attached to a corner between a column and a base or a beam as a reinforcing bracket for a wooden building of this type. Yes. This reinforcing metal fitting is formed into a bag shape from a vertical plate portion and a horizontal plate portion that are in contact with both right-angle side surfaces of the entrance corner portion, and left and right side plate portions that connect and integrate the sides of the vertical plate portion and the horizontal plate portion. The vertical plate portion and the side surface of the column are fixed by a plurality of stoppers generally called a coach screw (also referred to as a lag screw).

Japanese Patent Laid-Open No. 08-338071

  The conventional reinforcing bracket as described above has a brace for each corner when used in a form in which two reinforcing brackets fixed to two corners positioned diagonally are connected by braces and reinforced. The number of fasteners used for fixing between the vertical plate part and the column of the reinforcing bracket and between the horizontal plate part and the base or beam was sufficient with the conventional one. In order to increase the relative pull-out strength (tensile strength) in the length direction of the column between the base or the beam, the number of fasteners that fix the vertical plate part and the column to the reinforcing bracket is insufficient. It was. In order to solve this problem, it is conceivable to increase the area of the vertical plate portion and increase the number of stopper insertion holes, but the entire reinforcing metal fitting becomes large, and a significant increase in cost is inevitable.

  The present invention proposes a reinforcing member for a wooden building that can solve the conventional problems as described above, and the reinforcing member for a wooden building according to the present invention according to claim 1, A reference numeral of an embodiment to be described later is attached and shown, and includes a reinforcing metal fitting body 1 and a reinforcing plate 2 attached to a corner between a column 5 and a base 4 or a beam. The reinforcing plate 2 includes a vertical plate portion 6 and a horizontal plate portion 7 which are in contact with right-angled side surfaces of the entrance corner portion and fixed by stoppers (coach screws 19 and 21, anchor bolt nuts 18 and 23), respectively. Is composed of a strip-like plate that is long in the length direction of the column 5, and the column is formed by a stopper (coach screw 19) that overlaps the vertical plate portion 6 of the reinforcing metal fitting body 1 and fixes the vertical plate portion 6 to the column. Overlapping part 13 fixed to 5 and a stop directly on pillar 5 It has a configuration in which a extended portion 14 which is secured by the coach screw 20).

  When the present invention is carried out, the reinforcing metal fitting body 1 is configured in a bag shape having left and right side plate portions 8a and 8b that connect the left and right sides of the vertical plate portion 6 and the left and right sides of the horizontal plate portion 7. In this case, as described in claim 2, the reinforcing plate 2 has both sides (curved side portions 2a and 2b) of the region to be the overlapping portion 13 of the belt-like plate having the width of the extending portion 14. Further, it can be bent inward so as to fit between the left and right side plate portions 8a, 8b of the reinforcing metal fitting body 1.

  According to a third aspect of the present invention, the plurality of stopper insertion holes 10 and 16 provided concentrically in the vertical plate portion 6 of the reinforcing metal fitting body 1 and the overlapping portion 13 of the reinforcing plate 2, and the reinforcing plate 2 The plurality of stopper insertion holes 17 provided in the extended portion 14 of the extension part 14 are the same as the stoppers (coach screws 19, 20) of the respective reinforcing brackets when the reinforcing brackets having the same structure are attached to both sides of the column 5. Therefore, the reinforcing plates 2 can be arranged asymmetrically with respect to the center line in the length direction.

  Further, as described in claim 4, the plurality of stopper insertion holes 17 provided in the extending portion 14 of the reinforcing plate 2 form a short cylindrical wall 17a that bites into a column around the hole by burring. be able to.

  Further, as described in claim 5, the horizontal plate portion 7 of the reinforcing metal fitting body 1 has a bolt hole 11 for fixing to the base 4 with the anchor bolt 18, and a plurality of bolt holes 11 arranged around the bolt hole 11. And a nut 23 screwed into an anchor bolt 18 penetrating the bolt hole 11 is inserted into the stopper insertion hole 12 by a pipe washer 22 fitted to the anchor bolt 18. It can comprise so that it may support at a level higher than the head of the stopper (coach screw 21).

  According to the reinforcing member for a wooden building of the present invention as set forth in claim 1, a conventionally known reinforcing member is used as it is as a reinforcing member body, and a reinforcing plate is added to the reinforcing member so as to stop the column as a whole reinforcing member. The number of tools can be greatly increased, and as a result, the relative pull-out strength in the length direction of the column between the column and the base or beam (tenon strength) can be greatly increased. In addition, the means for coupling the reinforcing plate to the vertical plate portion of the reinforcing metal fitting body is to share the vertical plate portion of the reinforcing metal fitting body with a stopper that is fixed to the column. There is no need for the work of connecting and unifying and dedicated parts. Of course, when the reinforcing metal fitting is simply used to connect the end portion of the brace to the corner, it is only necessary to use the reinforcing metal fitting body as usual without using the reinforcing plate, and the cost can be kept low.

  In addition, according to the structure of Claim 2, not only the bending strength of the overlap part of a reinforcement board increases, but the said reinforcement board, while eliminating the notch process of the both sides of the area | region used as the overlap part of a reinforcement board The width of the extension part directly fixed to the pillar with the stopper can be widened, and the necessary number of stopper insertion holes can be easily drilled without difficulty.

  Moreover, according to the structure of Claim 3, even when attaching the reinforcement metal fitting of the same structure on both sides of a pillar, only the expected number of stops of the maximum length permitted from the thickness of a pillar is used. It is possible to reduce the strength of the column by using a number of long bolts and nuts that pass through the column and tighten the reinforcing brackets (including the reinforcing plate) on both sides together, or less than half the column width There is no case where the original pulling strength cannot be obtained by using a short stopper.

  Further, according to the configuration of the fourth aspect, the presence of the short cylindrical wall that bites into the column can increase the fixing strength of the extending portion of the reinforcing plate to the column in the column length direction. Costs can be reduced by reducing the number of stopper insertion holes provided in the extending portion, and thus reducing the number of stoppers to be used.

  Furthermore, according to the structure of claim 5, not only the horizontal plate portion of the reinforcing metal fitting body is fixed to the base with the anchor bolt, but also the horizontal plate portion is fixed to the base around the anchor bolt by the required number of fasteners. It can be fixed to. That is, although the fixing strength of the horizontal plate portion of the reinforcing metal fitting body to the base can be significantly increased, the stopper insertion hole can be arranged close to the bolt hole, and the stopper can be attached to the anchor bolt. Therefore, it is not necessary to increase the area of the horizontal plate portion of the reinforcing metal fitting body, so that an increase in the cost of the reinforcing metal fitting body can be suppressed.

It is a vertical front view which shows one Example of this invention. It is a vertical right view of FIG. It is a cross-sectional plan view of FIG. Fig. A is a longitudinal front view of a reinforcing metal fitting body, and Fig. B is a right side view thereof. It is a top view of a reinforcement metal fitting main body same as the above. Fig. A is a right side view of the reinforcing plate, and Fig. B is a front view thereof. Fig. A is a plan view of the same reinforcing plate, and Fig. B is a sectional view taken along line XX of Fig. 6A. Fig. A is a right side view showing a modification of the reinforcing plate, and Fig. B is a front view thereof.

  1 to 3, 1 is a reinforcing metal fitting body, 2 is a reinforcing plate, 3 is a cloth foundation, 4 is a foundation fixed horizontally on the cloth foundation 3, and 5 is erected on the foundation 4 at a right angle. It is a pillar. As shown in FIGS. 4 and 5, the reinforcing metal fitting body 1 includes a vertical plate portion 6, a horizontal plate portion 7 that is connected to the lower end of the vertical plate portion 6 at a right angle and is shorter than the vertical plate portion 6, and a vertical plate. It is composed of right and left side plates 8a and 8b that are substantially right-angled triangles connecting the left and right sides of the plate 6 and the left and right sides of the horizontal plate 7, and is formed into a bag shape by pressing one metal plate. Are integrally molded. Accordingly, the corners between the constituent plate portions 6 to 8b are formed in an arc shape with an appropriate radius.

  In the vertical plate portion 6 of the reinforcing metal fitting 1, a plurality (three) of bolt holes 9 are arranged at appropriate intervals in the length direction, and a plurality (at intervals of appropriate intervals in the length direction and width direction of the vertical plate portion 6 ( (Five) stopper insertion holes 10 are provided. The plurality of stopper insertion holes 10 are arranged asymmetrically with respect to the center line in the length direction of the vertical plate portion 6 passing through the center of the bolt hole 9. The horizontal plate portion 7 of the reinforcing metal fitting 1 is provided with one bolt hole 11 and a plurality of (four) stopper insertion holes 12 provided so as to surround the bolt hole 11. The bolt holes 9 and 11 are integrally formed by burring the vertical plate portion 6 and the horizontal plate portion 7 with short cylindrical walls 9a and 11a protruding outward from the periphery of the holes.

  As shown in FIGS. 6 and 7, the reinforcing plate 2 has a width substantially equal to the width of the reinforcing metal fitting body 1 (interval between the outer surfaces of the left and right side plate portions 8) and the vertical plate portion 6 of the reinforcing metal fitting body 1. It consists of a metal strip having a length nearly twice as long as its length (height), and the left and right sides of its lower half are curved in an arc shape on the same side so that the curved side portions 2a and 2b Thus, the width of the lower half portion is narrowed so that it can be overlapped inside the vertical plate portion 6 of the reinforcing metal fitting body 1. Thus, the lower half of the reinforcing plate 2 provided with the curved side portions 2a and 2b constitutes an overlapping portion 13 that overlaps the vertical plate portion 6 of the reinforcing metal fitting body 1, and the curved side portions 2a and 2b are formed. The wide upper half portion that does not have the extending portion 14 extends outward from the vertical plate portion 6 of the reinforcing metal fitting body 1.

  When the overlapping portion 13 of the reinforcing plate 2 is overlapped inside the vertical plate portion 6 of the reinforcing metal fitting body 1, each bolt hole 9 and each stopper inserted in the vertical plate portion 6 are inserted. A plurality (three) of bolt holes 15 and a plurality (five) of stopper insertion holes 16 are provided so as to be concentrically overlapped with the hole 10, and the extending portion 14 has a length direction of the reinforcing plate 2. A plurality of (ten) stopper insertion holes 17 are provided at appropriate intervals in the width direction. Similarly to the stopper insertion hole 10 provided in the vertical plate portion 6 of the reinforcing metal fitting 1, the stopper insertion hole 17 is also arranged asymmetrically with respect to the longitudinal center line of the reinforcing plate 2. Yes.

  Explaining how to use the reinforcing metal fitting body 1 and the reinforcing plate 2 configured as described above, as shown in FIG. 1 to FIG. The reinforcing bracket body 1 is inserted between the base 4 and the column 5 so that the anchor bolts 18 that are arranged in advance through the bolt holes 11 of the horizontal plate portion 7 of the reinforcing bracket body 1 are inserted. Placed in the section. In this state, the overlapping portion 13 of the reinforcing plate 2 is overlapped on the inner side of the vertical plate portion 6 of the reinforcing metal fitting 1, so that the stopper insertion holes 10 on the vertical plate portion 6 side and the stopper insertion holes 16 on the reinforcement plate 2 side are overlapped. And concentrically. Then, a coach screw 19 as a stopper is driven from the respective stopper insertion holes 10, 16 that overlap each other toward the column 5, and the overlapping portion 13 of the reinforcing plate 2 and the vertical plate portion 6 of the reinforcing metal fitting body 1 are connected in common. It is fixed to the side surface of the column 5 by the coach screw 19. At this time, the short cylindrical wall 9 a protruding outward from each bolt hole 9 of the vertical plate portion 6 of the reinforcing metal fitting body 1 bites into the side surface of the column 5, and the outer side surface of the vertical plate portion 6 is the column 5. Although the surface is brought into surface contact with the side surface, a concave portion in which the short cylindrical wall 9a is fitted may be engraved on the side surface of the column 5 in advance. Further, the curved side portions 2 a and 2 b are configured not to obstruct surface contact between the vertical plate portion 6 and the overlapping portion 13 of the reinforcing plate 2 in the reinforcing metal fitting body 1.

  The extension portion 14 of the reinforcing plate 2 is driven by a coach screw 20 as a stopper toward each pillar 5 in each stopper insertion hole 17 provided in the extension portion 14. Stick to the side. At this time, the extending portion 13 of the reinforcing plate 2 that is in a state of floating from the side surface of the column 5 is bent at the boundary portion between the overlapping portion 13 and reliably comes into surface contact with the side surface of the column 2. .

  If the vertical plate portion 6 and the reinforcing plate 2 of the reinforcing bracket body 1 are fixed to the column 5 side by the coach screws 19 and 20 as described above, the horizontal plate portion 7 of the reinforcing bracket body 1 is connected to the bolt hole 11 (anchor The coach screw 21 as a stopper is driven from the stopper insertion hole 12 around the bolt 18) toward the base 4, and the anchor bolt 18 protruding from the bolt hole 11 is sufficiently larger than the height of the head of the coach screw 21. The horizontal plate portion 7 of the reinforcing metal fitting 1 is fixed to the surface of the base 4 by screwing and fastening the nut 23 to the anchor bolt 18 in a state where the pipe washer 22 is externally fitted. At this time, a pipe washer fitted to the anchor bolt 18 even if the stopper insertion hole 12 is close to the bolt hole 11 so that the head of the coach screw 21 interferes and the nut 23 cannot be rotated. Thus, the rotation operation on the nut 23 can be performed satisfactorily without being interfered with the head of the coach screw 21. The short cylindrical wall 11a projecting outward from the bolt hole 11 of the horizontal plate portion 7 of the reinforcing metal fitting body 1 bites into the surface of the base 4 by driving the coach screw 21 or fastening the nut 23. Although the outer surface of the horizontal flat plate portion 7 comes into surface contact with the surface of the base 4, a concave portion in which the short cylindrical wall 11 a is fitted may be formed on the surface of the base 4 in advance.

  The reinforcing plate 2 can be modified as shown in FIG. That is, the curved side portions 2a and 2b formed on both sides of the overlapping portion 13 are eliminated, the both sides of the overlapping portion 13 are notched, and the vertical plate portion is interposed between the left and right side plate portions 8a and 8b of the reinforcing metal fitting body 1. It can also be narrowed to a width that can be superimposed on 6. Of course, the entire reinforcing plate 2 may be formed of a belt-like plate having a width equal to the width of the overlapping portion 13 shown in FIG. Further, the stopper insertion hole 17 provided in the extending portion 14 of the reinforcing plate 2 is provided with a short cylindrical wall 17a outwardly from the periphery of the hole (toward the side that bites into the side surface of the column 5). Can be integrally formed by burring. In this case, the short cylindrical wall 17a bites into the side surface of the column 5 or is fitted into a recess formed in advance on the side surface of the column 5, so that the reinforcing plate 2 is attached to the length direction of the column 5 Since the strength is greatly improved, the number of the stopper insertion holes 17 provided in the extending portion 14 of the reinforcing plate 2 can be reduced as illustrated.

  Note that the short cylindrical wall 9a of the bolt hole 9 does not project from the vertical plate portion 6 of the reinforcing metal fitting body 1, or the large-diameter bolt hole 15 into which the short cylindrical wall 9a is fitted is used as the reinforcing plate 2. When the overlapping portion 13 is provided, the overlapping portion 13 of the reinforcing plate 2 is sandwiched between the vertical plate portion 6 of the reinforcing metal fitting body 1 and the side surface of the column 5 to reinforce the vertical plate portion 6 of the reinforcing metal fitting body 1 and the reinforcing plate 2. It is also possible to fix the overlapping portion 13 of the plate 2 to the side surface of the column 5 with a common coach screw 19. In this case, the overlapping portion 13 of the reinforcing plate 2 is formed with a curved side portion that is externally fitted to an arc-shaped protruding corner from the vertical plate portion 6 of the reinforcing metal fitting body 1 to the left and right side plate portions 8a and 8b. The overlapping portion 12 of the reinforcing plate 2 is configured to be slidably fitted in the length (height) direction of the vertical plate portion 6 with respect to the vertical plate portion 6 of the reinforcing metal fitting body 1. This facilitates the alignment of the overlapping portion 13 of the reinforcing plate 2 with respect to the vertical plate portion 6 of the reinforcing metal fitting body 1.

  When the reinforcing metal fitting body 1 is used as a brace connecting hardware, as shown in the drawing, the reinforcing metal fitting 1 is used by utilizing the through holes 24 concentrically provided on the left and right side plate portions 8a and 8b. The end portion of the brace can be pivotally connected between the left and right side plate portions 8a and 8b of the main body 1. However, when the reinforcing bracket main body 1 is used as a brace connecting hardware in this way, the reinforcing plate 2 is used. You may use only the reinforcement metal fitting body 1 independently, without using together. The reinforcing metal fitting according to the present invention can be used not only for the corner between the base 4 and the column 5 but also for the corner between the column 4 and the beam.

  Furthermore, the reinforcing metal fittings according to the present invention can be used symmetrically arranged at the corners on both sides of the column 5, but in this case, the reinforcing metal body 1 and the reinforcing plate 2 on both sides of the column 5 are connected to the column 5. Since the stopper insertion holes 16 and 17 into which the coach screws 19 and 20 are driven are arranged asymmetrically as described above, the coach screws 19 and 20 driven toward the door are not likely to interfere with each other. In other words, as the coach screws 19 and 20, those having a necessary and sufficient length longer than half the thickness of the pillar 5 can be utilized as shown in the figure.

  The reinforcing bracket according to the present invention can be used as a reinforcing bracket that increases the pull-out strength of a column with respect to a foundation or beam of a wooden building.

DESCRIPTION OF SYMBOLS 1 Reinforcement metal fitting body 2 Reinforcement board 2a, 2b Curved side part 3 Fabric foundation 4 Base 5 Pillar 6 Vertical plate part 7 Horizontal plate part 8a, 8b Left and right both side plate part 9, 11, 15 Bolt hole 9a, 11a Short cylindrical wall 10, 12, 16, 17 Stopper insertion hole 13 Reinforcement plate overlap part 14 Reinforcement plate extension part 18 Anchor bolt 19-21 Coach screw 22 Pipe washer 23 Nut 24 Through hole

Claims (5)

  It consists of a reinforcing metal fitting body and a reinforcing plate attached to the corner between the pillar and the base or beam, and the reinforcing metal fitting body is in contact with the right-angled side surfaces of the corner and fixed by stoppers. The reinforcing plate has a vertical plate portion and a horizontal plate portion, and the reinforcing plate is composed of a strip-like plate that is long in the length direction of the column, and overlaps with the vertical plate portion of the reinforcing metal fitting body, and is fixed to the column. A reinforcing member for a wooden building, comprising: an overlapping portion fixed to a column by a stopper to be extended; and an extending portion fixed to the column by a stopper directly.   The reinforcing bracket body is configured in a bag shape with left and right side plates connecting the left and right sides of the vertical plate and the left and right sides of the horizontal plate, and the reinforcing plate is a belt-like shape having a width of the extending portion. The reinforcing bracket for a wooden building according to claim 1, wherein both sides of a region to be the overlapping portion of the plates are bent inward so as to fit between the left and right side plates of the reinforcing bracket main body.   The plurality of stopper insertion holes provided concentrically on the vertical plate portion of the reinforcing metal fitting body and the overlapping portion of the reinforcement plate, and the plurality of stopper insertion holes provided in the extension region of the reinforcement plate are columns. The reinforcing plate is arranged asymmetrically with respect to the center line in the length direction of the reinforcing plate so that the stoppers of the reinforcing members do not overlap when the reinforcing metal fittings having the same structure are attached to both sides of the reinforcing plate. Reinforcing brackets for wooden buildings described in 1.   The plurality of stopper insertion holes provided in the extending portion of the reinforcing plate have a short cylindrical wall that bites into a column around the hole formed by burring. Reinforcing metal fittings for wooden buildings.   The horizontal plate portion of the reinforcing metal fitting body is provided with bolt holes for fixing to the base with anchor bolts and a plurality of stopper insertion holes arranged around the bolt holes, and anchors penetrating the bolt holes. The pipe washer which supports the nut screwed to the bolt at a level higher than the head of the stopper inserted through the stopper insertion hole is fitted to the anchor bolt. Reinforcing brackets for wooden buildings as described in the section.

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