| 摘要 |
PROBLEM TO BE SOLVED: To surely connect square batters according to the inclined angle of haunches by providing connecting pin through holes and a prescribed number of connecting angle adjusting holes in a pair of joint members having square batter insertion pieces in one ends. SOLUTION: A pair of joint members 2, 2 having square batter insertion pieces 3, 3 in one ends are rotatably connected by inserting a connecting pin 5 into through holes 4 formed in their tip upper end sides into an opposed state. A fixed pin 7 is inserted by selecting either ones of a prescribed number of connecting angle adjusting holes 6 formed in the same circumference with the connection pin through hole of each joint member 2 set to the center so that the both joint members 2 can be fixed mutually at a desired angle. The connecting angles of the both joint members 2 are adjusted according to the inclined angles of the haunches and the insertion pieces 3 are inserted into the respective square batters 59, 59 to be connected. This constitution can surely connect the square batters 59 in matched states with the inclination angles of the haunches.
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