Gong, in particular for a timepiece movement

摘要

The gong has a vibrating unit provided with an end (1) built-in a lug (7), a free end (5), and two parts (2, 3) that are connected by an intersection point (4), where the intersection point that turns around 180 degree in a longitudinal axis of the gong. The parts are provided in same plane and parallel to each other, where the parts are rectilinear and circular-arc shaped and the radii and lengths of the parts are different. A polygonal or circular cross-section of the gong, has a dimension that is variable along one of the parts.