| 摘要 |
<p>This seat tool used in a joint structure in which joint parts of woody members are tightened, secured, and joined by obliquely crossed connecting bolts, wherein a back plate which is put on a surface having high strength to resist a load and being difficult to deform in a woody member, a back plate which is put on a surface having low strength to resist the load and being easy to deform, and through-holes through which the connecting bolt is passed in the back plate and a seat plate, respectively, which constitute a triangular cylindrical part that is formed into a triangular cylindrical shape integrally with part of the back plate are formed, thereby making it possible to suppress the deformation of a woody surface due to a load acting on the surface and prevent the looseness and deformation after construction of a wooden framework structure or the like.</p> |
