BOBBIN HOLDER AND WIND-UP GEAR PROVIDED WITH THE SAME

摘要

A bobbin holder (1) of the present invention has loosely fitted between a cylindrical bobbin (23) and a rotating cylinder (2) into which the bobbin is inserted thin elastic rings (3a to h) each comprising a ring-like spring member (30), a pair of rigid rings (38) fixed to the sides of the spring member (30) and a rubber member (39) provided between the pair of rigid rings and on inner and outer circumferences of the spring member. The rigid rings (38) are pressed from the sides of the elastic rings, respectively, the ring-like spring member (30) is deformed radially outwardly so as to increase the diameter thereof, and the rubber member (39) is tightly secured to the internal circumferential surface of the bobbin (23) to thereby be held in place. In this case, in the above bobbin holder, a mode may be possible which has a shape in which the difference delta between the outside diameter Ds of the rotating cylinder and the inside diameter Db of the bobbin is less than 10 mm and the thickness t at the end of the rotating cylinder is smaller than the thickness in the vicinity of a portion where the rotating cylinder is in engagement with a driving shaft. It is possible to realize high-speed winding up in a state in which a bobbin is strongly held when the bobbin holder (1) constructed as described above comprises a wind-up gear in which a linear body such as thread and steel wire, synthetic resin film, fabric sheet and paper are wound up around the bobbin (23).