| 摘要 |
In the slots, an open-ended flat tube is insertable, which on the surrounding connecting position is solderable to the accommodation slot. The bridge stages (7, 8, 9) in one of their halves (39, 40) have a material-strengthening stamping (20, 21). The bridge ribs are flattened in their structure, so that the tube longitudinal segment (2) has a D-shaped cross-section. The stampings in a bridge rib are available pref. in the edge-side quarter of the rib. They are pref. triangular, curved, meander-shaped or similar. The ends of the accommodation slots (4, 5, 6, 15), through their provided length in relation to the dia. of the tube (1) are at angle (alpha) of pref. approximately 30 deg. to the cross-sectional abscissa on both sides of the tube axis. |
