| 摘要 |
A first shaft (12), near to its end, has a radial passage opening (16) with a pin (18) in it, the ends of which protrude from the shaft circumference and have parallel flattenings (26). A second shaft near to its end has an axial cut-out (32) for the end of the first shaft (12), the cut-out having an internal cross-section which extends from a narrowest size, where it encloses the first shaft with minimum play, in a shape of a conic section. This allows pivotting of the first shaft within the second up to a set angle determined by the conic section, e.g. a hyperbola. From the inner face are two slots 180 degrees apart, parallel to each other and of constant depth to receive the ends of the pin axially movably.
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