Watch equipped with a rotating bezel with a bezel locking system provided with an integrated helium valve

A watch comprising:

• a watch case including
• a case middle;
• a rotating bezel mounted on an upper face of the case middle, the bezel being provided with a plurality of receiving spaces regularly distributed over a lower surface;
• and
• a system for locking the bezel comprising:
• a first hole machined in the case middle and oriented radially with respect to the bezel,
• an inner thread on at least one portion of a surface of said first hole, or on an inner surface of a tube fixedly mounted inside the first hole,
• a rotating crown, the crown being secured to an arbor arranged inside the first hole, the arbor including the following elements arranged in an inward direction from an exterior of the case middle:
• a section provided with an external thread in direct contact with said inner thread,
• a frustoconical section having a diameter that decreases in said inward direction, and
• an end collar having a outer face in contact with the inner surface of the tube, and
• a pin arranged inside a second hole in the case middle, said second hole being oriented transversely with respect to the first hole, the pin being provided with a spring that is prestressed in order to maintain physical contact between a first end of the pin and an external surface of the arbor, the pin being dimensioned such that its second end can be housed inside one of the receiving spaces of the bezel,
• wherein the elements are arranged such that:
• screwing in the crown towards the interior of the case middle causes a movement of the pin against the prestressing of the spring, through an interaction between the first end of the pin and the frustoconical section, the movement pushing the pin inside one of the receiving spaces of the bezel, and thereby locking the bezel at an end of the screwing, and
• unscrewing the crown releases the pin from said receiving space under the action of the return force exerted by the spring, and thereby unlocks the bezel at an end of the unscrewing,
• wherein the arbor also includes a first cylindrical section and a second cylindrical section located on either side of the frustoconical section such that the diameter of the frustoconical section gradually changes from a diameter of the first cylindrical section to a diameter of the second cylindrical section, and
• wherein the second cylindrical section extends continuously from the frustoconical section to the end collar, the end collar extending radially outward from an end of the second cylindrical section such that a side of the pin contacts the second cylindrical section and a side face of the end collar at the end of the unscrewing, the contact between the pin and the end collar preventing the crown from being unscrewed any further.