| 摘要 |
PROBLEM TO BE SOLVED: To provide a relative rotation preventive means of a wall joining structure which is slipped on a threaded connection part between a first external screw rod and an internal screw of a pipe body and which is forcibly fitted on the connection part, when given a blow, pressing the internal screw against the external screw, and has parts of simple construction which can be manufactured at low cost and easily constructed. SOLUTION: The wall joining structure consists of a second external screw rod 02 to be secured to a reinforcing structure of existing wall, a first external screw rod 10 to support and fix a form B to be newly set for casing concrete, and a pipe body 01 for connecting the rod 02 and 10. In this case, a relative rotation preventive element 20 to be slipped on a threaded connection part between the rod 10 and the body 01 has a bottom part 30 having a strike portion 31 and an external screw rod insertion hole 24 and a tapered protruding strip 25 provided in a cylindrical portion 21 for receiving an end of the pipe body. And if the portion 31 is given a blow, the strip 25 is deformed by the end of the body 01 so that the element 20 is tilted. As a result, the resistance of the strip 25 and the resistance of the external screw rod against the hole 24 prevents a relative rotation between the rod 10 and the threaded connection part of the pipe body 01.
|
