| 摘要 |
The present invention provides a pivoting joint that has two stable position s. The pivoting joint is comprised of two housing elements that can rotate coaxially with respect to one another. A spring (5), general ly in the shape of a modified hairpin, is contained within the two housing elements. The two ends of the spring fit into holes in one housi ng element (3), and the closed end of the spring is held, substantially irrotatably, in the other housing element (1). The spring (5) urges the two housing elements to one or the other rotational extreme with respect to one another. |
