Joint metal and building structure

Abstract

A joint metal includes a securing plate and a coupling plate. The securing plate is secured to the side surface of a support material. The coupling plate is disposed to project from the securing plate toward the horizontal structural member side. The coupling plate is coupled in a state inserted into a groove formed over the vertical direction on the end surface of the horizontal structural member. The coupling plate includes a plurality of coupling holes and first deficient portions. The coupling hole allows insertion of a rod-shaped coupling tool within the groove. The coupling tool passes through the horizontal structural member. The first deficient portion is formed by cutting out the peripheral area of the coupling hole. The first deficient portion is formed in an arc shape centered at the coupling hole.

1 . A joint metal for joining an end surface of a horizontal structural member to a side surface of a support material, the joint metal comprising:
 a securing plate to be secured to the side surface of the support material; and   a coupling plate disposed to project from the securing plate toward the horizontal structural member side, the coupling plate being to be coupled in a state inserted into a groove formed over a vertical direction on the end surface of the horizontal structural member, wherein   the coupling plate includes:
 a coupling hole that allows insertion of a rod-shaped coupling tool within the groove, the coupling tool being to pass through the horizontal structural member; and 
 a first deficient portion formed by cutting out a peripheral area of the coupling hole, wherein 
   the first deficient portion is formed in an arc shape centered at the coupling hole.   
     
     
         2 . The joint metal according to  claim 1 , wherein
 the first deficient portion is formed in an arc shape centered at the coupling hole with a constant diameter.   
     
     
         3 . The joint metal according to  claim 2 , wherein
 a plurality of the first deficient portions are formed in arc shapes centered at the coupling holes with a same diameter, and   one of portions between end portions of the first deficient portions adjacent to one another in a circumferential direction is disposed to be positioned on a horizontal straight line passing through a center of the coupling hole and on a distal end side of the coupling plate with respect to the coupling hole in a horizontal direction.   
     
     
         4 . The joint metal according to  claim 3 , wherein
 the first deficient portion is formed symmetrically to a horizontal straight line passing through a center of the coupling hole.   
     
     
         5 . A joint metal for joining an end surface of a horizontal structural member to a side surface of a support material, the joint metal comprising:
 a securing plate to be secured to the side surface of the support material; and   a coupling plate disposed to project from the securing plate toward the horizontal structural member side, the coupling plate being to be coupled in a state inserted into a groove formed over a vertical direction on the end surface of the horizontal structural member, wherein   the coupling plate includes:
 a plurality of coupling holes that allow insertion of rod-shaped coupling tools within the groove, the coupling tools being to pass through the horizontal structural member; and 
 a second deficient portion along a vertical straight line that passes through a center of the coupling hole, the second deficient portion being formed to be long in a vertical direction between the adjacent coupling holes. 
   
     
     
         6 . A joint metal for joining an end surface of a horizontal structural member to a side surface of a support material, the joint metal comprising:
 a securing plate to be secured to the side surface of the support material; and   a coupling plate disposed to project from the securing plate toward the horizontal structural member side, the coupling plate being to be coupled in a state inserted into a groove formed over a vertical direction on the end surface of the horizontal structural member, wherein   the coupling plate includes:
 a plurality of coupling holes that allow insertion of rod-shaped coupling tools within the groove, the coupling tools being to pass through the horizontal structural member; 
 a third deficient portion cut out in a peripheral area of the coupling hole; and 
 a fourth deficient portion along a vertical straight line that passes through the coupling hole, wherein 
   the third deficient portion is formed in an arc shape centered at the coupling hole, and   the fourth deficient portion is formed to be long in a vertical direction between the adjacent coupling holes.   
     
     
         7 . The joint metal according to  claim 6 , wherein
 the third deficient portion is formed in an arc shape centered at the coupling hole with a constant diameter.   
     
     
         8 . The joint metal according to  claim 7 , wherein
 a plurality of the third deficient portions are formed in arc shapes centered at the coupling holes with a same diameter, and   one of portions between end portions of the first deficient portions adjacent to one another in a circumferential direction is disposed to be positioned on a horizontal straight line passing through a center of the coupling hole and on a distal end side of the coupling plate with respect to the coupling hole in a horizontal direction.   
     
     
         9 . The joint metal according to  claim 8 , wherein
 the third deficient portion is formed symmetrically to a horizontal straight line passing through a center of the coupling hole.   
     
     
         10 . The joint metal according to  claim 9 , wherein
 the coupling plate includes:
 a pin groove formed on an upper end of the coupling plate; and 
 a fifth deficient portion and/or a sixth deficient portion, the fifth deficient portion being formed by cutting out in an arc shape in a peripheral area of the pin groove, the sixth deficient portion being formed by cutting out to be long in a vertical direction between the pin groove and the coupling hole adjacent to the pin groove. 
   
     
     
         11 . A joint metal for joining an end surface of a horizontal structural member to a side surface of a support material, the joint metal comprising:
 a securing plate to be secured to the side surface of the support material; and   a coupling plate disposed to project from the securing plate toward the horizontal structural member side, the coupling plate being to be coupled in a state inserted into a groove formed over a vertical direction on the end surface of the horizontal structural member, wherein   the coupling plate includes:
 a coupling hole that allows insertion of a rod-shaped coupling tool within the groove, the coupling tool being to pass through the horizontal structural member; and 
 a seventh deficient portion in communication with the coupling hole, the seventh deficient portion being formed to be long along a horizontal straight line. 
   
     
     
         12 . The joint metal according to  claim 11 , wherein
 the seventh deficient portion has a vertical width smaller than a diameter of the coupling hole.   
     
     
         13 . The joint metal according to  claim 12 , wherein
 the securing plate includes a plurality of fixing holes for inserting fixtures, the fixing holes being formed to be aligned in a vertical direction, and   a securing-plate reinforcing bead is disposed, the securing-plate reinforcing bead projecting from a back-side portion of the securing plate in contact with the side surface of the support material toward a projection direction of the coupling plate.   
     
     
         14 . The joint metal according to  claim 13 , wherein
 the securing-plate reinforcing bead is formed in a shape where a plurality of arcs communicate with one another in a vertical direction centered at the fixing holes so as to surround peripheral areas of the fixing holes.   
     
     
         15 . The joint metal according to  claim 14 , further comprising
 a reinforcing rib on a bended portion at a boundary between the securing plate and the coupling plate.   
     
     
         16 . The joint metal according to  claim 12 , wherein
 the securing plate includes a plurality of fixing holes for inserting fixtures, the fixing holes being formed to be aligned in a vertical direction, and   a reinforcing rib is disposed on a bended portion at a boundary between the securing plate and the coupling plate.   
     
     
         17 . The joint metal according to  claim 16 , wherein
 the reinforcing rib is disposed in each portion between the fixing holes adjacent to one another in the vertical direction.   
     
     
         18 . The joint metal according to  claim 12 , wherein
 the securing plate includes a plurality of fixing holes for inserting fixtures, the fixing holes being formed to be aligned in a vertical direction, and   a bended-portion reinforcing bead is disposed in communication with the securing plate from the coupling plate through a bended portion at a boundary between the securing plate and the coupling plate.   
     
     
         19 . The joint metal according to  claim 18 , further comprising
 end-portion reinforcing beads on both end portions in a width direction of the securing plate, the end-portion reinforcing bead being long in a vertical direction and projecting from a back-side portion of the securing plate in contact with the side surface of the support material toward a projection direction of the coupling plate.   
     
     
         20 . A building structure, comprising
 the joint metal according to  claim 19 , wherein   the joint metal joins the support material and the horizontal structural member together.