CLOSING/OPENING SYSTEM FOR TIMEPIECE CASE

The invention relates to a closing/opening system (1) for a timepiece (100) case (2) defined particularly in first and second parts (3a, 3b) of said case (2), the system (1) comprising a device for creating a mechanical connection (4), particularly a bayonet connection between said first and second parts (3a, 3b) and a device for creating a friction torque (5) between said first and second parts (3a, 3b), the device for creating a friction torque (5) comprising clamping faces (6a, 6b) configured to cooperate with one another when the case (2) is opened or closed and which are defined in said first and second parts (3a, 3b), the system comprising a clamping element (8) included in one of said two clamping faces (6a, 6b), said clamping element (8) being configured to generate a constant friction torque during a course of travel of one of the two parts (3a, 3b) relative to the other when the timepiece (100) case (2) is opened or closed. 本发明涉及用于钟表(100)的壳体(2)的关闭/打开系统(1)，该系统特别是限定在壳体(2)的第一和第二部件(3a，3b)中，该系统(1)包括用于产生特