Hinge apparatus for mobile phone has elastic biasing piece provided in the camshaft and which biases the fixed cam and the camshaft in opposite directions

摘要

The rotary hinge (10) has a rotary cam and a fixed cam that selectively performs power transmission of the rotating drive force of the power generating unit. A camshaft is assembled with the fixed cam such that the camshaft and the fixed cam are axially movable relative to each other. An elastic biasing piece provided in the camshaft biases the fixed cam and the camshaft in opposite directions.