| 摘要 |
A lid opening-closing supporting mechanism in a biaxial rotating system of the invention is formed of a base shaft, a rotating member axially supported by the base shaft, a guide hole bored in a container, a branch hole branching from the guide hole, and first and second slide shafts attached to a lid and located in the guide hole. In case coefficient of friction between the second slide shaft and an inner surface of the guide hole is defined as mu, and an angle formed between a line connecting the base shaft with the first slide shaft and a line connecting the base shaft with the second slide shaft is defined as alpha, the base shaft, the first slide shaft and the second slide shaft are arranged to satisfy a formula expressed as alpha>=2mu tan-1. Also, the first slide shaft may tightly contact an end portion of the guide hole, while the first and second slide shafts loosely contact the guide hole in other areas.
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