Self-winding mechanism for wrist watch movement, has lever with pivotal movement shaft placed relative to respective shafts of pawls, and cam shaped as endless groove to permit insertion of tubular element of lever

摘要

The mechanism has a winding body fixed to a cam (2a), where the cam is offset relative to a shaft of the body. A lever (6) is engaged with the cam. Pawls (6d, 6e) are mounted around shafts (6f, 6g) on the lever and engaged with a ratchet winding wheel (8). A pivotal movement shaft (7) of the lever is placed relative to the respective shafts of the pawls, so that the angular movement of the lever causes the respective angular movements of the pawls in opposite directions relative to the wheel. The cam is shaped as an endless groove to permit insertion of a tubular element (6c) of the lever. The tubular element is made of ruby.