| 摘要 |
A highly variable and economical spaceframe structual system is provided wherein the ends of elongated frame members have fixedly attached spherical, ball-shaped ends which, in turn, fit into spherically-shaped recessed sockets in the connector joint. The connector comprises three, disk-like parts which nestle one on top of another on a common axis and which are held together with a single bolt fastening means. Each of the three connector parts share interior faces with another part and have matching hemispherical recesses for joining the frame member ends. Other matching recessed formations on the interior faces of these parts permit the frame members to assume variable angles with respect to the common axis and, by this means, faciitate the property of variable curvature of the spaceframe structure. An intermediate assembly nut and a location for its placement is provided in the interior of the connector, the use of which, significantly simplifies the assembly process into three, more manageable stages. The connector parts and frame member ends have simple forms and are economical to cast with simple two-part molds. Differently designed frame member ends are provided which adapt and attach to a wide range of frame member materials. The simple structural design of the three connector parts permits the alternative assembly of a connector for constructing multi-layer spaceframe structures using two sets of two of the connector parts. Alternative frame member ends which are manufactured uusing a flexible, rubber-like material can facilitate the property of a spaceframe structure capable of elastically resonating in response to loading conditions.
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