Tension or compression bar for low voltage system, has inner rod extending in longitudinal direction, and outer rod connected with hollow space extending in longitudinal direction, where inner rod is arranged at hollow space

摘要

The bar has an inner rod (11) that extends in a longitudinal direction and exhibits two ends (12, 13). An outer rod (15) is connected with a hollow space that extends in the longitudinal direction, where the inner rod is arranged at the hollow space. The inner rod is made of a material such as rust-proof steel, and the outer rod is made of another material such as aluminum alloy, brass, or stainless-steel. The hollow space is circular or elliptical in cross section. Independent claims are also included for the following: (1) a support bearing for a tension or compression bar (2) a bearing structure for a roof of a winter garden.