| 摘要 |
PURPOSE: A spherical joint unit is provided to have the excellent efficiency of assembly, to effectively absorb loads of a structure concentrated in a jointed part and to secure the stability of the structure by providing the joint unit with a buffering structure having a hollow inside. CONSTITUTION: A spherical joint unit includes a spherical joint body(1), a connector(5), a truss skeleton frame(2) having four hollow legs, and coupling pins. The spherical joint body has many central connecting bodies(3) arranged in six directions and having hinge projections at all sides, and many side connecting bodies(4) concentrically connected and having hinge projections to be coupled with the hinge projections of the central connecting bodies with hinge pins. The connector is fit on the front surface of the central connecting bodies and the side connecting bodies and has a hollow connection pipes formed in all directions of a base. The coupling pins couple the connection pipes of the connector and the legs of the truss frame.
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