Annular rotating bezel system comprising a spring ring

A watch case comprising:

• a case middle;
• and
• a system provided with an annular rotating bezel rotatably mounted on the case middle,
• wherein the annular rotating bezel system includes a rotating bezel, an annular holding ring, a toothed ring, and a spring ring which extends in a plane and in configured to deform elastically along a radius, the spring ring cooperating elastically with the toothed ring,
• wherein said toothed ring and said spring ring are held in an axial direction perpendicular to the plane of the movement in the bezel by the annular holding ring,
• wherein either the toothed ring or the spring ring is arranged to be angularly joined to the rotating bezel, and the other being arranged to be angularly joined to the case middle, and
• wherein the spring ring has at least one thinned portion arranged to increase the flexibility of the spring ring in its plane, and
• wherein the thinned portion has at least one tooth extending in a radial direction towards an axis of the spring ring and elastically and radially meshed with the toothed ring, and
• wherein said tooth is arranged in a median part of the thinned portion.

An annular rotating bezel system intended to be rotatably mounted on a case middle of a watch case inside which is housed a timepiece movement which extends in a plane, comprising:

• a rotating bezel;
• an annular holding ring;
• a toothed ring;
• and
• a spring ring which extends in a plane and is configured to deform elastically along a radius, the spring ring cooperating elastically with the toothed ring,
• wherein said toothed ring and said spring ring are held in an axial direction perpendicular to the plane of the movement in the bezel by the annular holding ring,
• wherein either the toothed ring or the spring ring is arranged to be angularly joined to the rotating bezel, and the other being arranged to be angularly joined to the case middle,
• wherein the spring ring has at least one thinned portion arranged to increase the flexibility of the spring ring in its plane, and
• wherein the rotating bezel comprises at least one lug extending over an inner lateral surface of the bezel, and wherein the spring ring has, on an outer edge, at least one hollow wherein the lug of the bezel is engaged to allow a rotating connection between the spring ring and the rotating bezel.