| 摘要 |
PROBLEM TO BE SOLVED: To simply install mounting plates onto both side faces of a wall by engaging two plate parts adapted to the boreboles of the wall into the boreholes of base plates by clamping screws and fixing top plates onto the base plates. SOLUTION: Each of two combined base plates 1 is composed of oblong plates 2 having boreholes 3, 4 in the diagonal direction at end sections, the boreholes 3, 4 are penetrated to conical extensions 5, 6 positioned on the base sides of the end sections of the plates 2, and the base plates 1 are formed of a material having the same quality as the base plates 2. The base plates 1 are symmetrized to a central plane in the longitudinal direction, and the top plates are also symmetrized to the central plane similarly. The conical extensions 5, 6 are inserted into through-holes 7, 8 in the case of mounting, and the extensions 5, 6 are pushed mutually so that shaft sections 37 with the threads of claming screws 34 are engaged with the boreholes 4 with corresponding indentations. When the longer screws are turned by a quarter, the extensions are tightened mutually in the boreholes. |
